Usage¶
Dockerコマンド¶
Docker search¶
Docker searchはDockerレジストリ(DockerHub)のコンテナイメージを検索するコマンドである。
docker search [OPTIONS] TERM
Options:
-f, --filter value Filter output based on conditions provided (default [])
--help Print usage
--limit int Max number of search results (default 25)
--no-index Don't truncate output
--no-trunc Don't truncate output
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker search centos
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/centos The official build of CentOS. 3353 [OK]
docker.io docker.io/jdeathe/centos-ssh CentOS-6 6.9 x86_64 / CentOS-7 7.3.1611 x8... 69 [OK]
docker.io docker.io/consol/centos-xfce-vnc Centos container with "headless" VNC sessi... 26 [OK]
docker.io docker.io/nimmis/java-centos This is docker images of CentOS 7 with dif... 26 [OK]
docker.io docker.io/gluster/gluster-centos Official GlusterFS Image [ CentOS-7 + Glu... 19 [OK]
docker.io docker.io/million12/centos-supervisor Base CentOS-7 with supervisord launcher, h... 16 [OK]
docker.io docker.io/kinogmt/centos-ssh CentOS with SSH 13 [OK]
docker.io docker.io/egyptianbman/docker-centos-nginx-php A simple and highly configurable docker co... 9 [OK]
docker.io docker.io/torusware/speedus-centos Always updated official CentOS docker imag... 8 [OK]
docker.io docker.io/centos/mariadb55-centos7 5 [OK]
docker.io docker.io/nathonfowlie/centos-jre Latest CentOS image with the JRE pre-insta... 5 [OK]
docker.io docker.io/darksheer/centos Base Centos Image -- Updated hourly 2 [OK]
docker.io docker.io/harisekhon/centos-java Java on CentOS (OpenJDK, tags jre/jdk7-8) 2 [OK]
docker.io docker.io/harisekhon/centos-scala Scala + CentOS (OpenJDK tags 2.10-jre7 - 2... 2 [OK]
docker.io docker.io/blacklabelops/centos CentOS Base Image! Built and Updates Daily! 1 [OK]
docker.io docker.io/freenas/centos Simple CentOS Linux interactive container 1 [OK]
docker.io docker.io/sgfinans/docker-centos CentOS with a running sshd and Docker 1 [OK]
docker.io docker.io/timhughes/centos Centos with systemd installed and running 1 [OK]
docker.io docker.io/vorakl/centos CentOS7, EPEL, tools. Updated/Tested daily! 1 [OK]
docker.io docker.io/grossws/centos CentOS 6 and 7 base images with gosu and l... 0 [OK]
docker.io docker.io/januswel/centos yum update-ed CentOS image 0 [OK]
docker.io docker.io/kz8s/centos Official CentOS plus epel-release 0 [OK]
docker.io docker.io/repositoryjp/centos Docker Image for CentOS. 0 [OK]
docker.io docker.io/vcatechnology/centos A CentOS Image which is updated daily 0 [OK]
docker.io docker.io/wenjianzhou/centos centos 0 [OK]
Docker pull¶
Docker pullはDocker Hubからコンテナイメージ、およびレポジトリを取得するコマンドである。
docker pull [OPTIONS] NAME[:TAG|@DIGEST]
Options:
-a, --all-tags Download all tagged images in the repository
--disable-content-trust Skip image verification (default true)
--help Print usage
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker pull centos
Using default tag: latest
Trying to pull repository docker.io/library/centos ...
latest: Pulling from docker.io/library/centos
343b09361036: Pull complete
Digest: sha256:bba1de7c9d900a898e3cadbae040dfe8a633c06bc104a0df76ae24483e03c077
Docker run¶
Docker runはコンテナを起動するコマンドである。
docker run [OPTIONS] IMAGE [COMMAND] [ARG…]
Options:
--add-host value Add a custom host-to-IP mapping (host:ip) (default [])
-a, --attach value Attach to STDIN, STDOUT or STDERR (default [])
--blkio-weight value Block IO (relative weight), between 10 and 1000
--blkio-weight-device value Block IO weight (relative device weight) (default [])
--cap-add value Add Linux capabilities (default [])
--cap-drop value Drop Linux capabilities (default [])
--cgroup-parent string Optional parent cgroup for the container
--cidfile string Write the container ID to the file
--cpu-percent int CPU percent (Windows only)
--cpu-period int Limit CPU CFS (Completely Fair Scheduler) period
--cpu-quota int Limit CPU CFS (Completely Fair Scheduler) quota
-c, --cpu-shares int CPU shares (relative weight)
--cpuset-cpus string CPUs in which to allow execution (0-3, 0,1)
--cpuset-mems string MEMs in which to allow execution (0-3, 0,1)
-d, --detach Run container in background and print container ID
--detach-keys string Override the key sequence for detaching a container
--device value Add a host device to the container (default [])
--device-read-bps value Limit read rate (bytes per second) from a device (default [])
--device-read-iops value Limit read rate (IO per second) from a device (default [])
--device-write-bps value Limit write rate (bytes per second) to a device (default [])
--device-write-iops value Limit write rate (IO per second) to a device (default [])
--disable-content-trust Skip image verification (default true)
--dns value Set custom DNS servers (default [])
--dns-opt value Set DNS options (default [])
--dns-search value Set custom DNS search domains (default [])
--entrypoint string Overwrite the default ENTRYPOINT of the image
-e, --env value Set environment variables (default [])
--env-file value Read in a file of environment variables (default [])
--expose value Expose a port or a range of ports (default [])
--group-add value Add additional groups to join (default [])
--health-cmd string Command to run to check health
--health-interval duration Time between running the check (default 0s)
--health-retries int Consecutive failures needed to report unhealthy
--health-timeout duration Maximum time to allow one check to run (default 0s)
--help Print usage
-h, --hostname string Container host name
-i, --interactive Keep STDIN open even if not attached
--io-maxbandwidth string Maximum IO bandwidth limit for the system drive (Windows only)
--io-maxiops uint Maximum IOps limit for the system drive (Windows only)
--ip string Container IPv4 address (e.g. 172.30.100.104)
--ip6 string Container IPv6 address (e.g. 2001:db8::33)
--ipc string IPC namespace to use
--isolation string Container isolation technology
--kernel-memory string Kernel memory limit
-l, --label value Set meta data on a container (default [])
--label-file value Read in a line delimited file of labels (default [])
--link value Add link to another container (default [])
--link-local-ip value Container IPv4/IPv6 link-local addresses (default [])
--log-driver string Logging driver for the container
--log-opt value Log driver options (default [])
--mac-address string Container MAC address (e.g. 92:d0:c6:0a:29:33)
-m, --memory string Memory limit
--memory-reservation string Memory soft limit
--memory-swap string Swap limit equal to memory plus swap: '-1' to enable unlimited swap
--memory-swappiness int Tune container memory swappiness (0 to 100) (default -1)
--name string Assign a name to the container
--network string Connect a container to a network (default "default")
--network-alias value Add network-scoped alias for the container (default [])
--no-healthcheck Disable any container-specified HEALTHCHECK
--oom-kill-disable Disable OOM Killer
--oom-score-adj int Tune host's OOM preferences (-1000 to 1000)
--pid string PID namespace to use
--pids-limit int Tune container pids limit (set -1 for unlimited)
--privileged Give extended privileges to this container
-p, --publish value Publish a container's port(s) to the host (default [])
-P, --publish-all Publish all exposed ports to random ports
--read-only Mount the container's root filesystem as read only
--restart string Restart policy to apply when a container exits (default "no")
--rm Automatically remove the container when it exits
--runtime string Runtime to use for this container
--security-opt value Security Options (default [])
--shm-size string Size of /dev/shm, default value is 64MB
--sig-proxy Proxy received signals to the process (default true)
--stop-signal string Signal to stop a container, SIGTERM by default (default "SIGTERM")
--storage-opt value Storage driver options for the container (default [])
--sysctl value Sysctl options (default map[])
--tmpfs value Mount a tmpfs directory (default [])
-t, --tty Allocate a pseudo-TTY
--ulimit value Ulimit options (default [])
-u, --user string Username or UID (format: <name|uid>[:<group|gid>])
--userns string User namespace to use
--uts string UTS namespace to use
-v, --volume value Bind mount a volume (default [])
--volume-driver string Optional volume driver for the container
--volumes-from value Mount volumes from the specified container(s) (default [])
-w, --workdir string Working directory inside the container
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker run -it --name centos7 centos:latest /bin/bash
[root@be8d9c7eff66 /]#
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker run -it -p 8000:80 --name webserver1 test:ver1.0
Note
docker runでコンテナを起動した際、以下の通りのデバイスファイルでマウントされる。
[root@be8d9c7eff66 /]# cat /etc/centos-release
CentOS Linux release 7.3.1611 (Core)
[root@be8d9c7eff66 /]# df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/docker-202:1-1598-d6f0a6a08d7e1d2946a1d23e9dea4d240ee41c134e5179fee5d683f365cde53c 10G 238M 9.8G 3% /
また、ネットワーク関連の設定は以下の通りである。
[root@be8d9c7eff66 /]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
4: eth0@if5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 172.17.0.2/16 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::42:acff:fe11:2/64 scope link
valid_lft forever preferred_lft forever
実行プロセスは以下の通りである。
[root@be8d9c7eff66 /]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 May25 ? 00:00:00 /bin/bash
root 71 1 0 03:29 ? 00:00:00 ps -ef
Note
CentOS7からはifconfigなどのネットワーク関連コマンドが非推奨となり、代わりにiproute系のコマンドが推奨されることになった。標準のdockerイメージでは、デフォルトではインストールされていなかったため、必要に応じて、導入すること。
[root@be8d9c7eff66 /]# yum install iproute
Loaded plugins: fastestmirror, ovl
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/4): extras/7/x86_64/primary_db | 151 kB 00:00:00
(2/4): base/7/x86_64/group_gz | 155 kB 00:00:00
(3/4): updates/7/x86_64/primary_db | 4.8 MB 00:00:00
(4/4): base/7/x86_64/primary_db | 5.6 MB 00:00:00
Determining fastest mirrors
* base: ftp.iij.ad.jp
* extras: ftp.iij.ad.jp
* updates: ftp.iij.ad.jp
Resolving Dependencies
--> Running transaction check
---> Package iproute.x86_64 0:3.10.0-74.el7 will be installed
--> Processing Dependency: libmnl.so.0(LIBMNL_1.0)(64bit) for package: iproute-3.10.0-74.el7.x86_64
--> Processing Dependency: libxtables.so.10()(64bit) for package: iproute-3.10.0-74.el7.x86_64
--> Processing Dependency: libmnl.so.0()(64bit) for package: iproute-3.10.0-74.el7.x86_64
--> Running transaction check
---> Package iptables.x86_64 0:1.4.21-17.el7 will be installed
--> Processing Dependency: libnfnetlink.so.0()(64bit) for package: iptables-1.4.21-17.el7.x86_64
--> Processing Dependency: libnetfilter_conntrack.so.3()(64bit) for package: iptables-1.4.21-17.el7.x86_64
---> Package libmnl.x86_64 0:1.0.3-7.el7 will be installed
--> Running transaction check
---> Package libnetfilter_conntrack.x86_64 0:1.0.4-2.el7 will be installed
---> Package libnfnetlink.x86_64 0:1.0.1-4.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
====================================================================================================================================================
Package Arch Version Repository Size
====================================================================================================================================================
Installing:
iproute x86_64 3.10.0-74.el7 base 618 k
Installing for dependencies:
iptables x86_64 1.4.21-17.el7 base 426 k
libmnl x86_64 1.0.3-7.el7 base 23 k
libnetfilter_conntrack x86_64 1.0.4-2.el7 base 53 k
libnfnetlink x86_64 1.0.1-4.el7 base 26 k
Transaction Summary
====================================================================================================================================================
Install 1 Package (+4 Dependent packages)
Total download size: 1.1 M
Installed size: 3.1 M
Is this ok [y/d/N]: y
Downloading packages:
warning: /var/cache/yum/x86_64/7/base/packages/libnetfilter_conntrack-1.0.4-2.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for libnetfilter_conntrack-1.0.4-2.el7.x86_64.rpm is not installed
(1/5): libnetfilter_conntrack-1.0.4-2.el7.x86_64.rpm | 53 kB 00:00:00
(2/5): iptables-1.4.21-17.el7.x86_64.rpm | 426 kB 00:00:00
(3/5): libmnl-1.0.3-7.el7.x86_64.rpm | 23 kB 00:00:00
(4/5): libnfnetlink-1.0.1-4.el7.x86_64.rpm | 26 kB 00:00:00
(5/5): iproute-3.10.0-74.el7.x86_64.rpm | 618 kB 00:00:00
----------------------------------------------------------------------------------------------------------------------------------------------------
Total 3.5 MB/s | 1.1 MB 00:00:00
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-3.1611.el7.centos.x86_64 (@CentOS)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Is this ok [y/N]: y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : libmnl-1.0.3-7.el7.x86_64 1/5
Installing : libnfnetlink-1.0.1-4.el7.x86_64 2/5
Installing : libnetfilter_conntrack-1.0.4-2.el7.x86_64 3/5
Installing : iptables-1.4.21-17.el7.x86_64 4/5
Installing : iproute-3.10.0-74.el7.x86_64 5/5
Verifying : libnetfilter_conntrack-1.0.4-2.el7.x86_64 1/5
Verifying : libnfnetlink-1.0.1-4.el7.x86_64 2/5
Verifying : iptables-1.4.21-17.el7.x86_64 3/5
Verifying : libmnl-1.0.3-7.el7.x86_64 4/5
Verifying : iproute-3.10.0-74.el7.x86_64 5/5
Installed:
iproute.x86_64 0:3.10.0-74.el7
Dependency Installed:
iptables.x86_64 0:1.4.21-17.el7 libmnl.x86_64 0:1.0.3-7.el7 libnetfilter_conntrack.x86_64 0:1.0.4-2.el7 libnfnetlink.x86_64 0:1.0.1-4.el7
Complete!
Note
実行中のコンテナのシェルから抜けるときは、ctl+p+qで、実行元のbashに復帰する。exitで抜けてしまうとコンテナがストップするので注意。
Docker ps¶
Docker psは実行中のコンテナを表示するコマンドである。
docker ps [OPTIONS]
Options:
-a, --all Show all containers (default shows just running)
-f, --filter value Filter output based on conditions provided (default [])
--format string Pretty-print containers using a Go template
--help Print usage
-n, --last int Show n last created containers (includes all states) (default -1)
-l, --latest Show the latest created container (includes all states)
--no-trunc Don't truncate output
-q, --quiet Only display numeric IDs
-s, --size Display total file sizes
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
be8d9c7eff66 centos:latest "/bin/bash" 19 hours ago Up 19 hours centos7
Docker attach¶
Docker attachは実行中のコンテナに再接続するコマンドである。
docker attach [OPTIONS] CONTAINER
Options:
--detach-keys string Override the key sequence for detaching a container
--help Print usage
--no-stdin Do not attach STDIN
--sig-proxy Proxy all received signals to the process (default true)
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker attach centos7
[root@be8d9c7eff66 /]#
Docker stop¶
Docker stopは実行中の1つ、もしくはそれ以上のコンテナに停止するコマンドである。
docker stop [OPTIONS] CONTAINER [CONTAINER…]
Options:
--help Print usage
-t, --time int Seconds to wait for stop before killing it (default 10)
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
be8d9c7eff66 centos:latest "/bin/bash" 3 days ago Up 4 minutes centos7
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker stop centos7
centos7
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
Docker start¶
Docker stopは停止している1つ、もしくはそれ以上のコンテナに起動するコマンドである。
docker start [OPTIONS] CONTAINER [CONTAINER…]
Options:
-a, --attach Attach STDOUT/STDERR and forward signals
--detach-keys string Override the key sequence for detaching a container
--help Print usage
-i, --interactive Attach container's STDIN
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
be8d9c7eff66 centos:latest "/bin/bash" 3 days ago Exited (137) 4 minutes ago centos7
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker start centos7
centos7
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
be8d9c7eff66 centos:latest "/bin/bash" 3 days ago Up 12 seconds centos7
Docker commit¶
Docker commitは既存のコンテナイメージから新たなイメージを作成するコマンドである。
docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
Options:
-a, --author string Author (e.g., "John Hannibal Smith <hannibal@a-team.com>")
-c, --change value Apply Dockerfile instruction to the created image (default [])
--help Print usage
-m, --message string Commit message
-p, --pause Pause container during commit (default true)
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker commit centos7 test:ver1.0
sha256:9ddcf0f1c82dfc725113c59cb76c022622fc6026bb4a99d917f7f2f3360051cc
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test ver1.0 9ddcf0f1c82d 11 seconds ago 283.2 MB
docker.io/centos latest 8140d0c64310 2 weeks ago 192.5 MB
Docker rm¶
Docker rmは１つ、もしくはそれ以上のコンテナを削除するコマンドである。
docker rm [OPTIONS] CONTAINER [CONTAINER…]
Options:
-f, --force Force the removal of a running container (uses SIGKILL)
--help Print usage
-l, --link Remove the specified link
-v, --volumes Remove the volumes associated with the container
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker rm webserver1
webserver1
Docker diff¶
Docker diffはコンテナのファイルシステムに加えられた変更差分を表示するコマンドである。
docker diff CONTAINER
Options:
--help Print usage
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker diff webserver1
C /usr
C /usr/lib64
A /usr/lib64/libapr-1.so.0.4.8
A /usr/lib64/apr-util-1
A /usr/lib64/httpd
A /usr/lib64/httpd/modules
# omit
Docker cp¶
Docker cpはコンテナのファイルシステム上のファイルやディレクトリをローカルのファイルシステム間でコピーするコマンドである。
docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH|- docker cp [OPTIONS] SRC_PATH|- CONTAINER:DEST_PATH
Options:
-L, --follow-link Always follow symbol link in SRC_PATH
--help Print usage
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker cp webserver1:/var/log/httpd /tmp/
Docker login¶
Docker login はDockerレジストリにログインするためのコマンドである。
docker login [OPTIONS] [SERVER]
Options:
--help Print usage
-p, --password string Password
-u, --username string Username
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker login
Login with your Docker ID to push and pull images from Docker Hub. If you dont have a Docker ID, head over to https://hub.docker.com to create one.
Username: xxxxxxx
Password:
Login Succeeded
Docker push¶
Docker pushはコンテナイメージやレポジトリを、レジストリにプッシュするコマンドである。
docker push [OPTIONS] NAME[:TAG]
Options:
--disable-content-trust Skip image verification (default true)
--help Print usage
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker push debugroom/test
The push refers to a repository [docker.io/debugroom/test]
05064569aaee: Pushed
b51149973e6a: Mounted from library/centos
ver1.0: digest: sha256:c462439235fc131b4caacab2f8b71094bc096473762da6fd2841ec4d008ed4e9 size: 741
Docker build¶
Docker buildはDockerfileからイメージを作成するコマンドである。
docker build [OPTIONS] PATH | URL | -
Options:
--build-arg value Set build-time variables (default [])
--cgroup-parent string Optional parent cgroup for the container
--cpu-period int Limit the CPU CFS (Completely Fair Scheduler) period
--cpu-quota int Limit the CPU CFS (Completely Fair Scheduler) quota
-c, --cpu-shares int CPU shares (relative weight)
--cpuset-cpus string CPUs in which to allow execution (0-3, 0,1)
--cpuset-mems string MEMs in which to allow execution (0-3, 0,1)
--disable-content-trust Skip image verification (default true)
-f, --file string Name of the Dockerfile (Default is 'PATH/Dockerfile')
--force-rm Always remove intermediate containers
--help Print usage
--isolation string Container isolation technology
--label value Set metadata for an image (default [])
-m, --memory string Memory limit
--memory-swap string Swap limit equal to memory plus swap: '-1' to enable unlimited swap
--no-cache Do not use cache when building the image
--pull Always attempt to pull a newer version of the image
-q, --quiet Suppress the build output and print image ID on success
--rm Remove intermediate containers after a successful build (default true)
--shm-size string Size of /dev/shm, default value is 64MB
-t, --tag value Name and optionally a tag in the 'name:tag' format (default [])
--ulimit value Ulimit options (default [])
-v, --volume value Set build-time bind mounts (default [])
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker build -t debugroom/test:ver1.1 ~/build_test
Docker rmi¶
Docker rmiは1つ、またはそれ以上のイメージを削除するコマンドである。
docker rmi [OPTIONS] IMAGE [IMAGE…]
Options:
-f, --force Force removal of the image
--help Print usage
--no-prune Do not delete untagged parents
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker rmi f89bd8b7b355
Deleted: sha256:f89bd8b7b35513aa6386d41673b3e91b0ca342f0dcedb0460a5f06abfbccdc16
Deleted: sha256:a40107948975217080bff86dba927314ea4ae6ebe4b967b06ad2d1269f74c277
Note
イメージを削除する場合、コンテナが実行(登録)されていると削除できないため、docker ps -aで該当のコンテナを探し、docker rmで削除しておく。
Docker top¶
Docker topはコンテナ内の実行プロセスを表示するコマンドである。
docker top CONTAINER [ps OPTIONS]
Options:
--help Print usage
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker top webserver2
UID PID PPID C STIME TTY TIME CMD
root 17251 17237 0 15:17 ? 00:00:00 /usr/sbin/init
root 17282 17251 0 15:17 ? 00:00:00 /usr/lib/systemd/systemd-journald
root 17297 17251 0 15:17 ? 00:00:00 /usr/lib/systemd/systemd-udevd
root 17340 17251 0 15:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
root 17342 17251 0 15:17 ? 00:00:00 /usr/lib/systemd/systemd-logind
dbus 17343 17251 0 15:17 ? 00:00:00 /bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
48 17375 17340 0 15:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
48 17376 17340 0 15:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
48 17377 17340 0 15:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
48 17378 17340 0 15:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
48 17379 17340 0 15:17 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
root 17423 17251 0 15:17 ? 00:00:00 (agetty)
Docker logs¶
Docker logsは指定したコンテナの標準出力を表示させるコマンドである。
docker logs [OPTIONS] CONTAINER
Fetch the logs of a container
Options:
--details Show extra details provided to logs
-f, --follow Follow log output
--help Print usage
--since string Show logs since timestamp
--tail string Number of lines to show from the end of the logs (default "all")
-t, --timestamps Show timestamps
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker logs apserver
Docker images¶
Docker imagesはコンテナイメージの一覧を出力するコマンドである。
docker images [OPTIONS] [REPOSITORY[:TAG]]
List images.
Options:
-a, --all Show all images (default hides intermediate images)
--digests Show digests
-f, --filter value Filter output based on conditions provided (default [])
--format string Pretty-print images using a Go template
--help Print usage
--no-trunc Don't truncate output
-q, --quiet Only show numeric IDs
アプリケーション実行環境の構築¶
Webサーバの構築¶
DockerコンテナでWebサーバの構築を行う。centosイメージで新たにWebサーバ用のコンテナイメージを作成する。
# docker commitにて、新しくイメージを作成
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker commit centos7 test:ver1.0
sha256:9ddcf0f1c82dfc725113c59cb76c022622fc6026bb4a99d917f7f2f3360051cc
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test ver1.0 9ddcf0f1c82d 11 seconds ago 283.2 MB
docker.io/centos latest 8140d0c64310 2 weeks ago 192.5 MB
# docker runにて、webserver1 という名前で、8000ポートを指定すると、コンテナの80ポートへリダイレクトするよう、コンテナイメージを実行。
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker run -d --privileged -p 8000:80 --name webserver1 test:ver1.0 /sbin/init
a54c0b51062298797283194edd7ad7753fd92c507a0735488ae750f95b488316
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker exec -it webserver1 /bin/bash
[root@a54c0b510622 /]#
# Webサーバのインストール
[root@a54c0b510622 /]# yum install httpd -y
Loaded plugins: fastestmirror, ovl
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/2): extras/7/x86_64/primary_db | 167 kB 00:00:00
(2/2): updates/7/x86_64/primary_db | 5.6 MB 00:00:00
Loading mirror speeds from cached hostfile
* base: ftp.iij.ad.jp
* extras: ftp.iij.ad.jp
* updates: ftp.iij.ad.jp
Resolving Dependencies
--> Running transaction check
---> Package httpd.x86_64 0:2.4.6-45.el7.centos.4 will be installed
--> Processing Dependency: httpd-tools = 2.4.6-45.el7.centos.4 for package: httpd-2.4.6-45.el7.centos.4.x86_64
--> Processing Dependency: system-logos >= 7.92.1-1 for package: httpd-2.4.6-45.el7.centos.4.x86_64
--> Processing Dependency: /etc/mime.types for package: httpd-2.4.6-45.el7.centos.4.x86_64
--> Processing Dependency: libaprutil-1.so.0()(64bit) for package: httpd-2.4.6-45.el7.centos.4.x86_64
--> Processing Dependency: libapr-1.so.0()(64bit) for package: httpd-2.4.6-45.el7.centos.4.x86_64
--> Running transaction check
---> Package apr.x86_64 0:1.4.8-3.el7 will be installed
---> Package apr-util.x86_64 0:1.5.2-6.el7 will be installed
---> Package centos-logos.noarch 0:70.0.6-3.el7.centos will be installed
---> Package httpd-tools.x86_64 0:2.4.6-45.el7.centos.4 will be installed
---> Package mailcap.noarch 0:2.1.41-2.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=================================================================================================================================
Package Arch Version Repository Size
=================================================================================================================================
Installing:
httpd x86_64 2.4.6-45.el7.centos.4 updates 2.7 M
Installing for dependencies:
apr x86_64 1.4.8-3.el7 base 103 k
apr-util x86_64 1.5.2-6.el7 base 92 k
centos-logos noarch 70.0.6-3.el7.centos base 21 M
httpd-tools x86_64 2.4.6-45.el7.centos.4 updates 84 k
mailcap noarch 2.1.41-2.el7 base 31 k
Transaction Summary
=================================================================================================================================
Install 1 Package (+5 Dependent packages)
Total download size: 24 M
Installed size: 32 M
Downloading packages:
(1/6): apr-util-1.5.2-6.el7.x86_64.rpm | 92 kB 00:00:00
(2/6): httpd-tools-2.4.6-45.el7.centos.4.x86_64.rpm | 84 kB 00:00:00
(3/6): apr-1.4.8-3.el7.x86_64.rpm | 103 kB 00:00:00
(4/6): mailcap-2.1.41-2.el7.noarch.rpm | 31 kB 00:00:00
(5/6): httpd-2.4.6-45.el7.centos.4.x86_64.rpm | 2.7 MB 00:00:00
(6/6): centos-logos-70.0.6-3.el7.centos.noarch.rpm | 21 MB 00:00:00
---------------------------------------------------------------------------------------------------------------------------------
Total 28 MB/s | 24 MB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : apr-1.4.8-3.el7.x86_64 1/6
Installing : apr-util-1.5.2-6.el7.x86_64 2/6
Installing : httpd-tools-2.4.6-45.el7.centos.4.x86_64 3/6
Installing : centos-logos-70.0.6-3.el7.centos.noarch 4/6
Installing : mailcap-2.1.41-2.el7.noarch 5/6
Installing : httpd-2.4.6-45.el7.centos.4.x86_64 6/6
Verifying : apr-1.4.8-3.el7.x86_64 1/6
Verifying : mailcap-2.1.41-2.el7.noarch 2/6
Verifying : apr-util-1.5.2-6.el7.x86_64 3/6
Verifying : httpd-tools-2.4.6-45.el7.centos.4.x86_64 4/6
Verifying : httpd-2.4.6-45.el7.centos.4.x86_64 5/6
Verifying : centos-logos-70.0.6-3.el7.centos.noarch 6/6
Installed:
httpd.x86_64 0:2.4.6-45.el7.centos.4
Dependency Installed:
apr.x86_64 0:1.4.8-3.el7 apr-util.x86_64 0:1.5.2-6.el7 centos-logos.noarch 0:70.0.6-3.el7.centos
httpd-tools.x86_64 0:2.4.6-45.el7.centos.4 mailcap.noarch 0:2.1.41-2.el7
Complete!
[root@a54c0b510622 /]#
# HTMLページを作成する。
[root@a54c0b510622 /]# echo '<h1>Hello, Docker!</h1>' > /var/www/html/index.html
# Webサーバを起動
[root@a54c0b510622 /]# systemctl enable httpd.service
Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service.
[root@a54c0b510622 /]# systemctl start httpd.service
[root@a54c0b510622 /]#
# コンテナの外から8000ポートを指定してアクセス。
[centos@ip-XXX-XXX-XXX-XXX ~]$ curl http://localhost:8000
<h1>Hello, Docker!</h1>
Cassandraクラスタサーバの構築¶
DockerコンテナでCassandraクラスタの構築を行う。centos7で新たにコンテナイメージを作成する。
# CentOS7のコンテナを起動
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker run -d --privileged --name cassandra-server1 centos:latest /sbin/init
5a8bd32a59adf502b61599214fee16075fe10fe9a2bab564e4be437f1f1e7039
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker exec -ti cassandra-server1 /bin/bash
# Java8とiprouteのインストール
[root@5a8bd32a59ad /]# yum install -y java-1.8.0-openjdk java-1.8.0.openjdk-devel iproute
Loaded plugins: fastestmirror, ovl
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/4): extras/7/x86_64/primary_db | 167 kB 00:00:00
(2/4): base/7/x86_64/group_gz | 155 kB 00:00:00
(3/4): updates/7/x86_64/primary_db | 5.6 MB 00:00:00
(4/4): base/7/x86_64/primary_db | 5.6 MB 00:00:02
Determining fastest mirrors
* base: ftp.iij.ad.jp
* extras: ftp.iij.ad.jp
* updates: ftp.iij.ad.jp
No package java-1.8.0.openjdk-devel available.
Resolving Dependencies
--> Running transaction check
---> Package iproute.x86_64 0:3.10.0-74.el7 will be installed
--> Processing Dependency: libmnl.so.0(LIBMNL_1.0)(64bit) for package: iproute-3.10.0-74.el7.x86_64
--> Processing Dependency: libxtables.so.10()(64bit) for package: iproute-3.10.0-74.el7.x86_64
--> Processing Dependency: libmnl.so.0()(64bit) for package: iproute-3.10.0-74.el7.x86_64
---> Package java-1.8.0-openjdk.x86_64 1:1.8.0.131-3.b12.el7_3 will be installed
--> Processing Dependency: java-1.8.0-openjdk-headless = 1:1.8.0.131-3.b12.el7_3 for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: xorg-x11-fonts-Type1 for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libpng15.so.15(PNG15_0)(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjvm.so(SUNWprivate_1.1)(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjpeg.so.62(LIBJPEG_6.2)(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjli.so(SUNWprivate_1.1)(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjava.so(SUNWprivate_1.1)(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libasound.so.2(ALSA_0.9.0rc4)(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libasound.so.2(ALSA_0.9)(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: fontconfig(x86-64) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libpng15.so.15()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjvm.so()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjpeg.so.62()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjli.so()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libjava.so()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libgif.so.4()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libawt.so()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libasound.so.2()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libXtst.so.6()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libXrender.so.1()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libXi.so.6()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libXext.so.6()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libXcomposite.so.1()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: libX11.so.6()(64bit) for package: 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
--> Running transaction check
---> Package alsa-lib.x86_64 0:1.1.1-1.el7 will be installed
---> Package fontconfig.x86_64 0:2.10.95-10.el7 will be installed
--> Processing Dependency: freetype for package: fontconfig-2.10.95-10.el7.x86_64
--> Processing Dependency: fontpackages-filesystem for package: fontconfig-2.10.95-10.el7.x86_64
--> Processing Dependency: libfreetype.so.6()(64bit) for package: fontconfig-2.10.95-10.el7.x86_64
---> Package giflib.x86_64 0:4.1.6-9.el7 will be installed
--> Processing Dependency: libSM.so.6()(64bit) for package: giflib-4.1.6-9.el7.x86_64
--> Processing Dependency: libICE.so.6()(64bit) for package: giflib-4.1.6-9.el7.x86_64
---> Package iptables.x86_64 0:1.4.21-17.el7 will be installed
--> Processing Dependency: libnfnetlink.so.0()(64bit) for package: iptables-1.4.21-17.el7.x86_64
--> Processing Dependency: libnetfilter_conntrack.so.3()(64bit) for package: iptables-1.4.21-17.el7.x86_64
---> Package java-1.8.0-openjdk-headless.x86_64 1:1.8.0.131-3.b12.el7_3 will be installed
--> Processing Dependency: tzdata-java >= 2015d for package: 1:java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: copy-jdk-configs >= 1.1-3 for package: 1:java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: lksctp-tools(x86-64) for package: 1:java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
--> Processing Dependency: jpackage-utils for package: 1:java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
---> Package libX11.x86_64 0:1.6.3-3.el7 will be installed
--> Processing Dependency: libX11-common >= 1.6.3-3.el7 for package: libX11-1.6.3-3.el7.x86_64
--> Processing Dependency: libxcb.so.1()(64bit) for package: libX11-1.6.3-3.el7.x86_64
---> Package libXcomposite.x86_64 0:0.4.4-4.1.el7 will be installed
---> Package libXext.x86_64 0:1.3.3-3.el7 will be installed
---> Package libXi.x86_64 0:1.7.4-2.el7 will be installed
---> Package libXrender.x86_64 0:0.9.8-2.1.el7 will be installed
---> Package libXtst.x86_64 0:1.2.2-2.1.el7 will be installed
---> Package libjpeg-turbo.x86_64 0:1.2.90-5.el7 will be installed
---> Package libmnl.x86_64 0:1.0.3-7.el7 will be installed
---> Package libpng.x86_64 2:1.5.13-7.el7_2 will be installed
---> Package xorg-x11-fonts-Type1.noarch 0:7.5-9.el7 will be installed
--> Processing Dependency: ttmkfdir for package: xorg-x11-fonts-Type1-7.5-9.el7.noarch
--> Processing Dependency: ttmkfdir for package: xorg-x11-fonts-Type1-7.5-9.el7.noarch
--> Processing Dependency: mkfontdir for package: xorg-x11-fonts-Type1-7.5-9.el7.noarch
--> Processing Dependency: mkfontdir for package: xorg-x11-fonts-Type1-7.5-9.el7.noarch
--> Running transaction check
---> Package copy-jdk-configs.noarch 0:1.2-1.el7 will be installed
---> Package fontpackages-filesystem.noarch 0:1.44-8.el7 will be installed
---> Package freetype.x86_64 0:2.4.11-12.el7 will be installed
---> Package javapackages-tools.noarch 0:3.4.1-11.el7 will be installed
--> Processing Dependency: python-javapackages = 3.4.1-11.el7 for package: javapackages-tools-3.4.1-11.el7.noarch
--> Processing Dependency: libxslt for package: javapackages-tools-3.4.1-11.el7.noarch
---> Package libICE.x86_64 0:1.0.9-2.el7 will be installed
---> Package libSM.x86_64 0:1.2.2-2.el7 will be installed
---> Package libX11-common.noarch 0:1.6.3-3.el7 will be installed
---> Package libnetfilter_conntrack.x86_64 0:1.0.6-1.el7_3 will be installed
---> Package libnfnetlink.x86_64 0:1.0.1-4.el7 will be installed
---> Package libxcb.x86_64 0:1.11-4.el7 will be installed
--> Processing Dependency: libXau.so.6()(64bit) for package: libxcb-1.11-4.el7.x86_64
---> Package lksctp-tools.x86_64 0:1.0.17-2.el7 will be installed
---> Package ttmkfdir.x86_64 0:3.0.9-42.el7 will be installed
---> Package tzdata-java.noarch 0:2017b-1.el7 will be installed
---> Package xorg-x11-font-utils.x86_64 1:7.5-20.el7 will be installed
--> Processing Dependency: libfontenc.so.1()(64bit) for package: 1:xorg-x11-font-utils-7.5-20.el7.x86_64
--> Processing Dependency: libXfont.so.1()(64bit) for package: 1:xorg-x11-font-utils-7.5-20.el7.x86_64
--> Running transaction check
---> Package libXau.x86_64 0:1.0.8-2.1.el7 will be installed
---> Package libXfont.x86_64 0:1.5.1-2.el7 will be installed
---> Package libfontenc.x86_64 0:1.1.2-3.el7 will be installed
---> Package libxslt.x86_64 0:1.1.28-5.el7 will be installed
---> Package python-javapackages.noarch 0:3.4.1-11.el7 will be installed
--> Processing Dependency: python-lxml for package: python-javapackages-3.4.1-11.el7.noarch
--> Running transaction check
---> Package python-lxml.x86_64 0:3.2.1-4.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=======================================================================================================
Package Arch Version Repository Size
=======================================================================================================
Installing:
iproute x86_64 3.10.0-74.el7 base 618 k
java-1.8.0-openjdk x86_64 1:1.8.0.131-3.b12.el7_3 updates 233 k
Installing for dependencies:
alsa-lib x86_64 1.1.1-1.el7 base 415 k
copy-jdk-configs noarch 1.2-1.el7 base 14 k
fontconfig x86_64 2.10.95-10.el7 base 229 k
fontpackages-filesystem noarch 1.44-8.el7 base 9.9 k
freetype x86_64 2.4.11-12.el7 base 391 k
giflib x86_64 4.1.6-9.el7 base 40 k
iptables x86_64 1.4.21-17.el7 base 426 k
java-1.8.0-openjdk-headless x86_64 1:1.8.0.131-3.b12.el7_3 updates 31 M
javapackages-tools noarch 3.4.1-11.el7 base 73 k
libICE x86_64 1.0.9-2.el7 base 65 k
libSM x86_64 1.2.2-2.el7 base 39 k
libX11 x86_64 1.6.3-3.el7 base 606 k
libX11-common noarch 1.6.3-3.el7 base 162 k
libXau x86_64 1.0.8-2.1.el7 base 29 k
libXcomposite x86_64 0.4.4-4.1.el7 base 22 k
libXext x86_64 1.3.3-3.el7 base 39 k
libXfont x86_64 1.5.1-2.el7 base 150 k
libXi x86_64 1.7.4-2.el7 base 40 k
libXrender x86_64 0.9.8-2.1.el7 base 25 k
libXtst x86_64 1.2.2-2.1.el7 base 20 k
libfontenc x86_64 1.1.2-3.el7 base 30 k
libjpeg-turbo x86_64 1.2.90-5.el7 base 134 k
libmnl x86_64 1.0.3-7.el7 base 23 k
libnetfilter_conntrack x86_64 1.0.6-1.el7_3 updates 55 k
libnfnetlink x86_64 1.0.1-4.el7 base 26 k
libpng x86_64 2:1.5.13-7.el7_2 base 213 k
libxcb x86_64 1.11-4.el7 base 189 k
libxslt x86_64 1.1.28-5.el7 base 242 k
lksctp-tools x86_64 1.0.17-2.el7 base 88 k
python-javapackages noarch 3.4.1-11.el7 base 31 k
python-lxml x86_64 3.2.1-4.el7 base 758 k
ttmkfdir x86_64 3.0.9-42.el7 base 48 k
tzdata-java noarch 2017b-1.el7 updates 183 k
xorg-x11-font-utils x86_64 1:7.5-20.el7 base 87 k
xorg-x11-fonts-Type1 noarch 7.5-9.el7 base 521 k
Transaction Summary
=======================================================================================================
Install 2 Packages (+35 Dependent packages)
Total download size: 37 M
Installed size: 119 M
Downloading packages:
warning: /var/cache/yum/x86_64/7/base/packages/copy-jdk-configs-1.2-1.el7.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for copy-jdk-configs-1.2-1.el7.noarch.rpm is not installed
(1/37): copy-jdk-configs-1.2-1.el7.noarch.rpm | 14 kB 00:00:00
(2/37): alsa-lib-1.1.1-1.el7.x86_64.rpm | 415 kB 00:00:00
(3/37): fontpackages-filesystem-1.44-8.el7.noarch.rpm | 9.9 kB 00:00:00
(4/37): fontconfig-2.10.95-10.el7.x86_64.rpm | 229 kB 00:00:00
(5/37): giflib-4.1.6-9.el7.x86_64.rpm | 40 kB 00:00:00
(6/37): iproute-3.10.0-74.el7.x86_64.rpm | 618 kB 00:00:00
(7/37): iptables-1.4.21-17.el7.x86_64.rpm | 426 kB 00:00:00
(8/37): javapackages-tools-3.4.1-11.el7.noarch.rpm | 73 kB 00:00:00
(9/37): libICE-1.0.9-2.el7.x86_64.rpm | 65 kB 00:00:00
(10/37): libSM-1.2.2-2.el7.x86_64.rpm | 39 kB 00:00:00
Public key for java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64.rpm is not installed
(11/37): java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64.rpm | 233 kB 00:00:00
(12/37): libX11-1.6.3-3.el7.x86_64.rpm | 606 kB 00:00:00
(13/37): freetype-2.4.11-12.el7.x86_64.rpm | 391 kB 00:00:00
(14/37): libX11-common-1.6.3-3.el7.noarch.rpm | 162 kB 00:00:00
(15/37): libXau-1.0.8-2.1.el7.x86_64.rpm | 29 kB 00:00:00
(16/37): libXcomposite-0.4.4-4.1.el7.x86_64.rpm | 22 kB 00:00:00
(17/37): libXext-1.3.3-3.el7.x86_64.rpm | 39 kB 00:00:00
(18/37): libXfont-1.5.1-2.el7.x86_64.rpm | 150 kB 00:00:00
(19/37): libXi-1.7.4-2.el7.x86_64.rpm | 40 kB 00:00:00
(20/37): libXrender-0.9.8-2.1.el7.x86_64.rpm | 25 kB 00:00:00
(21/37): libXtst-1.2.2-2.1.el7.x86_64.rpm | 20 kB 00:00:00
(22/37): libfontenc-1.1.2-3.el7.x86_64.rpm | 30 kB 00:00:00
(23/37): libjpeg-turbo-1.2.90-5.el7.x86_64.rpm | 134 kB 00:00:00
(24/37): libmnl-1.0.3-7.el7.x86_64.rpm | 23 kB 00:00:00
(25/37): libnfnetlink-1.0.1-4.el7.x86_64.rpm | 26 kB 00:00:00
(26/37): libpng-1.5.13-7.el7_2.x86_64.rpm | 213 kB 00:00:00
(27/37): libxcb-1.11-4.el7.x86_64.rpm | 189 kB 00:00:00
(28/37): libxslt-1.1.28-5.el7.x86_64.rpm | 242 kB 00:00:00
(29/37): lksctp-tools-1.0.17-2.el7.x86_64.rpm | 88 kB 00:00:00
(30/37): python-javapackages-3.4.1-11.el7.noarch.rpm | 31 kB 00:00:00
(31/37): ttmkfdir-3.0.9-42.el7.x86_64.rpm | 48 kB 00:00:00
(32/37): python-lxml-3.2.1-4.el7.x86_64.rpm | 758 kB 00:00:00
(33/37): java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64.rpm | 31 MB 00:00:00
(34/37): libnetfilter_conntrack-1.0.6-1.el7_3.x86_64.rpm | 55 kB 00:00:00
(35/37): tzdata-java-2017b-1.el7.noarch.rpm | 183 kB 00:00:00
(36/37): xorg-x11-font-utils-7.5-20.el7.x86_64.rpm | 87 kB 00:00:00
(37/37): xorg-x11-fonts-Type1-7.5-9.el7.noarch.rpm | 521 kB 00:00:00
-------------------------------------------------------------------------------------------------------
Total 25 MB/s | 37 MB 00:00:01
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-3.1611.el7.centos.x86_64 (@CentOS)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : freetype-2.4.11-12.el7.x86_64 1/37
Installing : libnfnetlink-1.0.1-4.el7.x86_64 2/37
Installing : libICE-1.0.9-2.el7.x86_64 3/37
Installing : libxslt-1.1.28-5.el7.x86_64 4/37
Installing : libmnl-1.0.3-7.el7.x86_64 5/37
Installing : libfontenc-1.1.2-3.el7.x86_64 6/37
Installing : libjpeg-turbo-1.2.90-5.el7.x86_64 7/37
Installing : libXfont-1.5.1-2.el7.x86_64 8/37
Installing : 1:xorg-x11-font-utils-7.5-20.el7.x86_64 9/37
Installing : libnetfilter_conntrack-1.0.6-1.el7_3.x86_64 10/37
Installing : iptables-1.4.21-17.el7.x86_64 11/37
Installing : python-lxml-3.2.1-4.el7.x86_64 12/37
Installing : python-javapackages-3.4.1-11.el7.noarch 13/37
Installing : javapackages-tools-3.4.1-11.el7.noarch 14/37
Installing : libSM-1.2.2-2.el7.x86_64 15/37
Installing : ttmkfdir-3.0.9-42.el7.x86_64 16/37
Installing : libX11-common-1.6.3-3.el7.noarch 17/37
Installing : alsa-lib-1.1.1-1.el7.x86_64 18/37
Installing : libXau-1.0.8-2.1.el7.x86_64 19/37
Installing : libxcb-1.11-4.el7.x86_64 20/37
Installing : libX11-1.6.3-3.el7.x86_64 21/37
Installing : libXext-1.3.3-3.el7.x86_64 22/37
Installing : libXi-1.7.4-2.el7.x86_64 23/37
Installing : libXtst-1.2.2-2.1.el7.x86_64 24/37
Installing : giflib-4.1.6-9.el7.x86_64 25/37
Installing : libXcomposite-0.4.4-4.1.el7.x86_64 26/37
Installing : libXrender-0.9.8-2.1.el7.x86_64 27/37
Installing : tzdata-java-2017b-1.el7.noarch 28/37
Installing : copy-jdk-configs-1.2-1.el7.noarch 29/37
Installing : lksctp-tools-1.0.17-2.el7.x86_64 30/37
Installing : 1:java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64 31/37
Installing : fontpackages-filesystem-1.44-8.el7.noarch 32/37
Installing : fontconfig-2.10.95-10.el7.x86_64 33/37
Installing : xorg-x11-fonts-Type1-7.5-9.el7.noarch 34/37
Installing : 2:libpng-1.5.13-7.el7_2.x86_64 35/37
Installing : 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64 36/37
Installing : iproute-3.10.0-74.el7.x86_64 37/37
Verifying : libXext-1.3.3-3.el7.x86_64 1/37
Verifying : giflib-4.1.6-9.el7.x86_64 2/37
Verifying : libjpeg-turbo-1.2.90-5.el7.x86_64 3/37
Verifying : libfontenc-1.1.2-3.el7.x86_64 4/37
Verifying : libXtst-1.2.2-2.1.el7.x86_64 5/37
Verifying : python-lxml-3.2.1-4.el7.x86_64 6/37
Verifying : libnetfilter_conntrack-1.0.6-1.el7_3.x86_64 7/37
Verifying : libxcb-1.11-4.el7.x86_64 8/37
Verifying : 2:libpng-1.5.13-7.el7_2.x86_64 9/37
Verifying : fontpackages-filesystem-1.44-8.el7.noarch 10/37
Verifying : ttmkfdir-3.0.9-42.el7.x86_64 11/37
Verifying : 1:java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64 12/37
Verifying : libmnl-1.0.3-7.el7.x86_64 13/37
Verifying : python-javapackages-3.4.1-11.el7.noarch 14/37
Verifying : libXcomposite-0.4.4-4.1.el7.x86_64 15/37
Verifying : iptables-1.4.21-17.el7.x86_64 16/37
Verifying : libXrender-0.9.8-2.1.el7.x86_64 17/37
Verifying : lksctp-tools-1.0.17-2.el7.x86_64 18/37
Verifying : copy-jdk-configs-1.2-1.el7.noarch 19/37
Verifying : xorg-x11-fonts-Type1-7.5-9.el7.noarch 20/37
Verifying : libxslt-1.1.28-5.el7.x86_64 21/37
Verifying : freetype-2.4.11-12.el7.x86_64 22/37
Verifying : tzdata-java-2017b-1.el7.noarch 23/37
Verifying : libICE-1.0.9-2.el7.x86_64 24/37
Verifying : libXfont-1.5.1-2.el7.x86_64 25/37
Verifying : javapackages-tools-3.4.1-11.el7.noarch 26/37
Verifying : 1:java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64 27/37
Verifying : libnfnetlink-1.0.1-4.el7.x86_64 28/37
Verifying : libXi-1.7.4-2.el7.x86_64 29/37
Verifying : libXau-1.0.8-2.1.el7.x86_64 30/37
Verifying : libSM-1.2.2-2.el7.x86_64 31/37
Verifying : alsa-lib-1.1.1-1.el7.x86_64 32/37
Verifying : libX11-1.6.3-3.el7.x86_64 33/37
Verifying : libX11-common-1.6.3-3.el7.noarch 34/37
Verifying : iproute-3.10.0-74.el7.x86_64 35/37
Verifying : fontconfig-2.10.95-10.el7.x86_64 36/37
Verifying : 1:xorg-x11-font-utils-7.5-20.el7.x86_64 37/37
Installed:
iproute.x86_64 0:3.10.0-74.el7 java-1.8.0-openjdk.x86_64 1:1.8.0.131-3.b12.el7_3
Dependency Installed:
alsa-lib.x86_64 0:1.1.1-1.el7 copy-jdk-configs.noarch 0:1.2-1.el7
fontconfig.x86_64 0:2.10.95-10.el7 fontpackages-filesystem.noarch 0:1.44-8.el7
freetype.x86_64 0:2.4.11-12.el7 giflib.x86_64 0:4.1.6-9.el7
iptables.x86_64 0:1.4.21-17.el7 java-1.8.0-openjdk-headless.x86_64 1:1.8.0.131-3.b12.el7_3
javapackages-tools.noarch 0:3.4.1-11.el7 libICE.x86_64 0:1.0.9-2.el7
libSM.x86_64 0:1.2.2-2.el7 libX11.x86_64 0:1.6.3-3.el7
libX11-common.noarch 0:1.6.3-3.el7 libXau.x86_64 0:1.0.8-2.1.el7
libXcomposite.x86_64 0:0.4.4-4.1.el7 libXext.x86_64 0:1.3.3-3.el7
libXfont.x86_64 0:1.5.1-2.el7 libXi.x86_64 0:1.7.4-2.el7
libXrender.x86_64 0:0.9.8-2.1.el7 libXtst.x86_64 0:1.2.2-2.1.el7
libfontenc.x86_64 0:1.1.2-3.el7 libjpeg-turbo.x86_64 0:1.2.90-5.el7
libmnl.x86_64 0:1.0.3-7.el7 libnetfilter_conntrack.x86_64 0:1.0.6-1.el7_3
libnfnetlink.x86_64 0:1.0.1-4.el7 libpng.x86_64 2:1.5.13-7.el7_2
libxcb.x86_64 0:1.11-4.el7 libxslt.x86_64 0:1.1.28-5.el7
lksctp-tools.x86_64 0:1.0.17-2.el7 python-javapackages.noarch 0:3.4.1-11.el7
python-lxml.x86_64 0:3.2.1-4.el7 ttmkfdir.x86_64 0:3.0.9-42.el7
tzdata-java.noarch 0:2017b-1.el7 xorg-x11-font-utils.x86_64 1:7.5-20.el7
xorg-x11-fonts-Type1.noarch 0:7.5-9.el7
Complete!
# 環境変数を設定
[root@5a8bd32a59ad /]# export JAVA_HOME="/etc/alternatives/java_sdk"
[root@5a8bd32a59ad /]# exit
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker exec -ti cassandra-server1 /bin/bash
# datastax.repoを作成する。
[root@5a8bd32a59ad /]# vi /etc/yum.repos.d/datastax.repo
[datastax]
name = DataStax Repo for Apache Cassandra
baseurl = http://rpm.datastax.com/community
enabled = 1
gpgcheck = 0
# Cassandraのインストール
[root@5a8bd32a59ad /]# yum -y install dsc30 cassandra30-tools
Loaded plugins: fastestmirror, ovl
datastax | 2.5 kB 00:00:00
datastax/primary_db | 117 kB 00:00:00
Loading mirror speeds from cached hostfile
* base: ftp.iij.ad.jp
* extras: ftp.iij.ad.jp
* updates: ftp.iij.ad.jp
Resolving Dependencies
--> Running transaction check
---> Package cassandra30-tools.noarch 0:3.0.9-1 will be installed
--> Processing Dependency: cassandra30 = 3.0.9-1 for package: cassandra30-tools-3.0.9-1.noarch
---> Package dsc30.noarch 0:3.0.9-1 will be installed
--> Running transaction check
---> Package cassandra30.noarch 0:3.0.9-1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=======================================================================================================
Package Arch Version Repository Size
=======================================================================================================
Installing:
cassandra30-tools noarch 3.0.9-1 datastax 5.1 k
dsc30 noarch 3.0.9-1 datastax 1.9 k
Installing for dependencies:
cassandra30 noarch 3.0.9-1 datastax 24 M
Transaction Summary
=======================================================================================================
Install 2 Packages (+1 Dependent package)
Total download size: 24 M
Installed size: 31 M
Downloading packages:
(1/3): cassandra30-tools-3.0.9-1.noarch.rpm | 5.1 kB 00:00:00
(2/3): dsc30-3.0.9-1.noarch.rpm | 1.9 kB 00:00:00
(3/3): cassandra30-3.0.9-1.noarch.rpm | 24 MB 00:00:02
-------------------------------------------------------------------------------------------------------
Total 9.1 MB/s | 24 MB 00:00:02
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : cassandra30-3.0.9-1.noarch 1/3
Installing : cassandra30-tools-3.0.9-1.noarch 2/3
Installing : dsc30-3.0.9-1.noarch 3/3
Verifying : cassandra30-tools-3.0.9-1.noarch 1/3
Verifying : cassandra30-3.0.9-1.noarch 2/3
Verifying : dsc30-3.0.9-1.noarch 3/3
Installed:
cassandra30-tools.noarch 0:3.0.9-1 dsc30.noarch 0:3.0.9-1
Dependency Installed:
cassandra30.noarch 0:3.0.9-1
Complete!
# Cassandra起動時のメモリオプションを設定。ここでは512M-1Gにする。
[root@5a8bd32a59ad /]# sed -i s/\#-Xms4G/-Xms512M/g /etc/cassandra/conf/jvm.options
[root@5a8bd32a59ad /]# sed -i s/\#-Xmx4G/-Xmx1G/g /etc/cassandra/conf/jvm.options
# cassandra.yamlのクラスタ設定を行う。
[root@5a8bd32a59ad /]# sed -i s/endpoint_snitch\:\ SimpleSnitch/endpoint_snitch\:\ GossipingPropertyFileSnitch/g /etc/cassandra/conf/cassandra.yaml
[root@5a8bd32a59ad /]# vi /etc/cassandra/conf/cassandra.yaml
- seeds: "XXX.XXX.XXX.XXX"
- listen_address: "XXX.XXX.XXX.XXX"
- rpc_address: "XXX.XXX.XXX.XXX"
- auto_bootstrap: false
[root@5a8bd32a59ad /]# systemctl enable cassandra
cassandra.service is not a native service, redirecting to /sbin/chkconfig.
Executing /sbin/chkconfig cassandra on
[root@5a8bd32a59ad /]# systemctl start cassandra
Note
seedsサーバとするIPアドレス、クラスタのIPアドレス、seedサーバならば、auto_bootstrapをfalseに設定すること。例えば、172.17.0.2(シードサーバ)、172.17.0.3(クラスタノード#1)、172.17.0.4(クラスタノード#2)の３台で構成するのであれば、設定は以下の通りとなる。
- [Seedサーバ]
- seeds: “172.17.0.2”
- listen_address: “172.17.0.2”
- rpc_address: “172.17.0.2”
- auto_bootstrap: false
- [クラスタ#1]
- seeds: “172.17.0.2”
- listen_address: “172.17.0.3”
- rpc_address: “172.17.0.3”
- [クラスタ#2]
- seeds: “172.17.0.2”
- listen_address: “172.17.0.4”
- rpc_address: “172.17.0.4”
[root@5a8bd32a59ad /]# nodetool status
Datacenter: dc1
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
UN 172.17.0.3 102.58 KB 256 48.6% fc52ff8f-be44-4cc4-8241-9a158b3ff0d9 rack1
UN 172.17.0.2 108.22 KB 256 50.4% 31480ecf-a9e0-49e7-a6a2-e8904cb6af28 rack1
UN 172.17.0.4 83.96 KB 256 52.4% ea14aede-00b6-4aff-bb48-9d1a3106c507 rack1
Docker Hubの利用¶
レポジトリの作成¶
Docker Hubでレポジトリを作成する。Create Repositoryボタンを押下し、名前と可視性を指定する。ここでは、testレポジトリをパブリックレポジトリとして作成する。
レポジトリにプッシュ¶
前節で作成したレポジトリにコンテナイメージをプッシュする。
- Dockerレジストリ(Docker Hub)にログイン
- debugroom/testレポジトリを新規に作成し、イメージをプッシュ
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: debugroom
Password:
Login Succeeded
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker commit centos7 debugroom/test:ver1.0
sha256:fbacaee322f6ff1e4f6c2d2795aef57c90e4873c8181516676a89a2e50cca5bc
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
debugroom/test ver1.0 fbacaee322f6 5 seconds ago 283.2 MB
test ver1.0 9ddcf0f1c82d 26 hours ago 283.2 MB
docker.io/centos latest 8140d0c64310 3 weeks ago 192.5 MB
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker push debugroom/test
The push refers to a repository [docker.io/debugroom/test]
05064569aaee: Pushed
b51149973e6a: Mounted from library/centos
ver1.0: digest: sha256:c462439235fc131b4caacab2f8b71094bc096473762da6fd2841ec4d008ed4e9 size: 741
- Docker Hub上にTagが新たに追加される。
Dockerfileの記述¶
Dockerfileを使ったWebサーバの構築¶
前節「Webサーバの構築」で実施したコンテナ内でのHTTP Serverの実行をDockerファイルを用いて行う。
# Dockerfiel for Apache HTTP Server
FROM docker.io/centos:latest
MAINTAINER debugroom
RUN yum -y install httpd; yum clean all; systemctl enable httpd.service
Add index.html /var/www/html/index.html
EXPOSE 80
CMD ["/usr/sbin/init"]
PostgreSQL DBサーバの構築¶
同様に、DBサーバとして、PostgreSQLをインストールし、データベース・テーブル環境の構築をDockerファイルに記述して行う。構築には リンク先のサイト を参考にした。
~/build_postgres/Dockerfile¶
FROM centos:latest
MAINTAINER debugroom
ENV container docker
RUN yum update -y && yum clean all
RUN yum install -y postgresql postgresql-server && yum clean all
RUN su - postgres -c "initdb --encoding=UTF8 --no-locale --pgdata=/var/lib/pgsql/data --auth=ident"
RUN systemctl enable postgresql
RUN cp -piv /var/lib/pgsql/data/postgresql.conf /var/lib/pgsql/data/postgresql.conf.bk
RUN sed -e "s/#listen_addresses = 'localhost'/listen_addresses = '*'/g" /var/lib/pgsql/data/postgresql.conf > /var/lib/pgsql/data/postgresql.tmp
RUN sed -e "s/log_filename = 'postgresql-%a.log'/log_filename = 'postgresql-%Y%m%d.log'/g" /var/lib/pgsql/data/postgresql.tmp > /var/lib/pgsql/data/postgresql.conf
RUN sed -e "s/log_truncate_on_rotation = on/log_truncate_on_rotation = off/g" /var/lib/pgsql/data/postgresql.conf > /var/lib/pgsql/data/postgresql.tmp
RUN sed -e "s/log_rotation_age = 1d/log_rotation_age = 7d/g" /var/lib/pgsql/data/postgresql.tmp > /var/lib/pgsql/data/postgresql.conf
RUN sed -e "s/#log_line_prefix = ''/log_line_prefix = '%t [%p] '/g" /var/lib/pgsql/data/postgresql.conf > /var/lib/pgsql/data/postgresql.tmp
RUN mv /var/lib/pgsql/data/postgresql.tmp /var/lib/pgsql/data/postgresql.conf
RUN su - postgres -c "pg_ctl start -w;psql -c \"alter role postgres with password 'postgres';\";pg_ctl stop -m fast"
RUN cp -piv /var/lib/pgsql/data/pg_hba.conf /var/lib/pgsql/data/pg_hba.conf.bk
RUN sed -e "s/^host/#host/g" /var/lib/pgsql/data/pg_hba.conf > /var/lib/pgsql/data/pg_hba.tmp
RUN sed -e "s/^local/#local/g" /var/lib/pgsql/data/pg_hba.tmp > /var/lib/pgsql/data/pg_hba.conf
RUN echo "local all postgres peer" >> /var/lib/pgsql/data/pg_hba.conf
RUN echo "local all all md5" >> /var/lib/pgsql/data/pg_hba.conf
RUN echo "host all all 0.0.0.0/0 md5" >> /var/lib/pgsql/data/pg_hba.conf
RUN rm -f /var/lib/pgsql/data/pg_hba.tmp
EXPOSE 5432
ADD scripts /var/local/postgresql/scripts
RUN chmod 755 /var/local/postgresql/scripts/init_db.sh
RUN /var/local/postgresql/scripts/init_db.sh
PosgreSQLのインストール後は、自作したシェルスクリプトの中から、データベースやロール、テーブルを作成し、各テーブルに権限を付与している。
~/build_postgres/scripts/init_db.sh¶
#!/bin/bash
set PASSWORD=postgres
su - postgres -c "pg_ctl start -w;psql -f /var/local/postgresql/scripts/create_role.sql;pg_ctl stop -m fast"
su - postgres -c "pg_ctl start -w;psql -f /var/local/postgresql/scripts/create_db.sql;pg_ctl stop -m fast"
su - postgres -c "pg_ctl start -w;psql -f /var/local/postgresql/scripts/create_table.sql -d sample-app;pg_ctl stop -m fast"
su - postgres -c "pg_ctl start -w;psql -f /var/local/postgresql/scripts/grant_role.sql -d sample-app;pg_ctl stop -m fast"
Note
コンテナ起動前にpsqlを実行する場合は、pg_ctlを起動してから実行しなければ以下のようなエラーになる。 psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket “/var/run/postgresql/.s.PGSQL.5432”?
~/build_postgres/scripts/create_role.sql¶
create role app with LOGIN password 'app';
~/build_postgres/scripts/create_db.sql¶
create database "sample-app" encoding 'utf8';
~/build_postgres/scripts/create_table.sql¶
/* Drop Tables */
DROP TABLE IF EXISTS ADDRESS;
DROP TABLE IF EXISTS PHONE;
DROP TABLE IF EXISTS EMAIL;
DROP TABLE IF EXISTS CREDENTIAL;
DROP TABLE IF EXISTS USR;
DROP TABLE IF EXISTS COMPANY;
/* Create Tables */
CREATE TABLE ADDRESS
(
COMPANY_ID char(10) NOT NULL,
USER_ID char(8) NOT NULL,
ADDRESS_NO int NOT NULL,
POST_CD char(7) NOT NULL,
ADDRESS varchar(255),
ADDRESS_DETAIL varchar(255),
PRIMARY KEY (COMPANY_ID, USER_ID, ADDRESS_NO),
UNIQUE (COMPANY_ID, USER_ID, ADDRESS_NO)
) WITHOUT OIDS;
CREATE TABLE COMPANY
(
COMPANY_ID char(10) NOT NULL,
COMPANY_NAME varchar(255),
PRIMARY KEY (COMPANY_ID)
) WITHOUT OIDS;
CREATE TABLE CREDENTIAL
(
COMPANY_ID char(10) NOT NULL,
USER_ID char(8) NOT NULL,
CREDENTIAL_NO int NOT NULL,
CREDENTIAL_TYPE char(4) NOT NULL,
CREDENTIAL_KEY varchar(255),
KEY_EXPIRED_DATE timestamp,
ACCESS_TOKEN varchar(512),
TOKEN_EXPIRED_DATE timestamp with time zone,
PRIMARY KEY (COMPANY_ID, USER_ID, CREDENTIAL_NO),
UNIQUE (COMPANY_ID, USER_ID, CREDENTIAL_NO)
) WITHOUT OIDS;
CREATE TABLE EMAIL
(
COMPANY_ID char(10) NOT NULL,
USER_ID char(8) NOT NULL,
EMAIL_NO int NOT NULL,
EMAIL varchar(255),
PRIMARY KEY (COMPANY_ID, USER_ID, EMAIL_NO),
UNIQUE (COMPANY_ID, USER_ID, EMAIL_NO)
) WITHOUT OIDS;
CREATE TABLE PHONE
(
COMPANY_ID char(10) NOT NULL,
USER_ID char(8) NOT NULL,
PHONE_NO int NOT NULL,
PHONE_NUMBER char(11),
RELATED_ADDRESS_NO int,
PRIMARY KEY (COMPANY_ID, USER_ID, PHONE_NO),
UNIQUE (COMPANY_ID, USER_ID, PHONE_NO)
) WITHOUT OIDS;
CREATE TABLE USR
(
COMPANY_ID char(10) NOT NULL,
USER_ID char(8) NOT NULL,
USER_NAME varchar(255),
LOGIN_ID varchar(32) NOT NULL UNIQUE,
BIRTHDAY char(8),
AUTHORITY_LEVEL int NOT NULL,
IS_LOGIN boolean NOT NULL,
PRIMARY KEY (COMPANY_ID, USER_ID),
UNIQUE (COMPANY_ID, USER_ID)
) WITHOUT OIDS;
/* Create Foreign Keys */
ALTER TABLE USR
ADD FOREIGN KEY (COMPANY_ID)
REFERENCES COMPANY (COMPANY_ID)
ON UPDATE RESTRICT
ON DELETE RESTRICT
;
ALTER TABLE ADDRESS
ADD FOREIGN KEY (COMPANY_ID, USER_ID)
REFERENCES USR (COMPANY_ID, USER_ID)
ON UPDATE RESTRICT
ON DELETE RESTRICT
;
ALTER TABLE PHONE
ADD FOREIGN KEY (COMPANY_ID, USER_ID)
REFERENCES USR (COMPANY_ID, USER_ID)
ON UPDATE RESTRICT
ON DELETE RESTRICT
;
ALTER TABLE EMAIL
ADD FOREIGN KEY (COMPANY_ID, USER_ID)
REFERENCES USR (COMPANY_ID, USER_ID)
ON UPDATE RESTRICT
ON DELETE RESTRICT
;
ALTER TABLE CREDENTIAL
ADD FOREIGN KEY (COMPANY_ID, USER_ID)
REFERENCES USR (COMPANY_ID, USER_ID)
ON UPDATE RESTRICT
ON DELETE RESTRICT
;
~/build_postgres/scripts/grant_role.sql¶
GRANT USAGE ON SCHEMA public TO app;
GRANT SELECT, UPDATE, INSERT, DELETE ON COMPANY TO app;
GRANT SELECT, UPDATE, INSERT, DELETE ON USR TO app;
GRANT SELECT, UPDATE, INSERT, DELETE ON ADDRESS TO app;
GRANT SELECT, UPDATE, INSERT, DELETE ON CREDENTIAL TO app;
GRANT SELECT, UPDATE, INSERT, DELETE ON EMAIL TO app;
GRANT SELECT, UPDATE, INSERT, DELETE ON PHONE TO app;
PostgreSQLに接続するAPサーバの構築¶
前節 PostgreSQL DBサーバの構築 に接続するアプリケーションをDockerfileを使って、構築する。アプリケーションサーバはTomcatを使用するが、Spring Bootで組み込みTomcatの形式でAPサーバを構築する。なお、Spring Bootの基本的な使い方については、Spring Bootのサンプル を参照すること。
まず、構築するアプリケーションは、以下の通り、Embedded Tomcatを使用した構成とするために、pom.xmlを以下の通り、作成する。
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
</parent>
<groupId>org.debugroom</groupId>
<artifactId>spring-boot-app</artifactId>
<packaging>jar</packaging>
<name>spring-boot-app</name>
<version>1.0-SNAPSHOT</version>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<compilerArgument>-parameters</compilerArgument>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>org.debugroom.sample.docker.boot.config.WebApp</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</project>
データベースへのアクセスはJPAを使用する。JPAを使ったデータベースアクセスについては、JPAサンプル も合わせて参照すること。USRテーブルにアクセスする、エンティティクラスは以下の通り。
package org.debugroom.sample.docker.boot.domain.entity;
import java.io.Serializable;
import javax.persistence.*;
import java.util.Set;
import com.fasterxml.jackson.annotation.JsonIgnore;
/**
* The persistent class for the usr database table.
*
*/
@Entity
@Table(name="usr")
@NamedQuery(name="User.findAll", query="SELECT u FROM User u")
public class User implements Serializable {
private static final long serialVersionUID = 1L;
@EmbeddedId
private UserPK id;
@Column(name="authority_level")
private Integer authorityLevel;
private String birthday;
@Column(name="is_login")
private Boolean isLogin;
@Column(name="login_id")
private String loginId;
@Column(name="user_name")
private String userName;
//bi-directional many-to-one association to Address
@OneToMany(mappedBy="usr")
private Set<Address> addresses;
//bi-directional many-to-one association to Credential
@OneToMany(mappedBy="usr")
private Set<Credential> credentials;
//bi-directional many-to-one association to Email
@OneToMany(mappedBy="usr")
private Set<Email> emails;
//bi-directional many-to-one association to Phone
@OneToMany(mappedBy="usr")
private Set<Phone> phones;
//bi-directional many-to-one association to Company
@ManyToOne
@JoinColumn(name="company_id", insertable=false, updatable=false)
@JsonIgnore
private Company company;
public User() {
}
// omit getter, setter
}
Note
後にJSON形式へコンバートするため、循環参照となるのを防止するために、@ManyToOneアノテーションを付与するプロパティには@JsonIgnoreアノテーションを付与しておく。
レポジトリクラスはJpaRepositoryインターフェースを使用して作成する。
package org.debugroom.sample.docker.boot.domain.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import org.debugroom.sample.docker.boot.domain.entity.User;
public interface UserRepository extends JpaRepository<User, String>{
}
データベースへのアクセスを、JSON形式で返却するよう、サービス、コントローラを実装する。
package org.debugroom.sample.docker.boot.domain.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.debugroom.sample.docker.boot.domain.entity.User;
import org.debugroom.sample.docker.boot.domain.repository.UserRepository;
public class SampleServiceImpl implements SampleService {
@Autowired
UserRepository userRepository;
@Override
public List<User> getUsers() {
return userRepository.findAll();
}
}
package org.debugroom.sample.docker.boot.app.web;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;
import org.debugroom.sample.docker.boot.domain.service.SampleService;
@RequestMapping("/api/v1")
@RestController
public class SampleRestController {
@Autowired
SampleService sampleService;
@RequestMapping(value="users", method=RequestMethod.GET)
@ResponseStatus(HttpStatus.OK)
public List<?> getUsers(){
return sampleService.getUsers();
}
}
Dockerで構築したDBサーバへアクセスするために、DB接続環境の設定ファイルを環境変数参照とするようにしておく。
src/main/resoures/application-production.yml¶
spring:
profiles: production
datasource:
url: jdbc:postgresql://${dbserver.port.5432.tcp.addr}:${dbserver.port.5432.tcp.port}/sample-app
username: ${dbserver.app.username}
password: ${dbserver.app.password}
driverClassName: org.postgresql.Driver
Note
DBサーバへの接続IPアドレスとポートは、linkオプションを使って、Dockerコンテナから環境変数<エイリアス名>_PORT_<ポート番号>_TCP_ADDRおよび、<エイリアス名>_PORT_<ポート番号>_TCP_PORTから参照可能である。エイリアス名はAPサーバのコンテナ起動時に、ポートはDBサーバのコンテナ起動時に指定するが、ここでは、エイリアス名をDBSERVER、ポートを5432とすることを前提に、DBSERVER_PORT_5432_TCP_ADDRおよび、DBSERVER_PORT_5432_TCP_PORTが環境変数として設定されるものとして定義しておく。なお、接続のデータベースユーザ名と、パスワードはDockerfileで環境変数を別途定義する。
こうして作成したSpring BootアプリケーションをDockerコンテナ上でMavenでビルドを行い、LaunchするためのDockerfileを作成する。ベースはCentOS7でOpenJDK1.8をインストールした後、Mavenをインストールし、アプリケーションをビルドしてポート8080でサーバ起動する。
# Dockerfile for Spring boot app using embedded tomcat server
FROM docker.io/centos:latest
MAINTAINER debugroom
RUN yum install -y \
java-1.8.0-openjdk \
java-1.8.0-openjdk-devel \
wget tar
RUN wget http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo
RUN sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo
RUN yum install -y apache-maven
ENV JAVA_HOME /etc/alternatives/jre
ADD spring-boot-app /var/local/springbootapp
RUN mvn install -f /var/local/springbootapp/pom.xml
ENV DBSERVER_APP_USERNAME=app
ENV DBSERVER_APP_PASSWORD=app
EXPOSE 8080
CMD java -jar -Dspring.profiles.active=production,jpa /var/local/springbootapp/target/spring-boot-app-1.0-SNAPSHOT.jar
Note
アプリケーション起動時にはapplication-production.ymlが有効するよう、プロファイルにproductionを指定しておく。
コンテナイメージをtomcat-springbootというイメージ名でビルドしておく。
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker build -t debugroom/test:tomcat-springboot <Dockerファイルのパス>
DBサーバのコンテナイメージを起動する。
[centos@ip-XXX-XXX-XXX-XXX ~]$ docker run -d --privileged --name dbserver1 -p 5432:5432 debugroom/test:postgres /sbin/init
DBサーバのコンテナのIPとポートを環境変数から取得できるよう、LINKオプションを指定して、APサーバのコンテナを起動する。ここではエイリアス名がdbserverとなるよう、上記で起動したdbserver1に対しdbserverというリンクを設定するもの(=エイリアス名)とする。また、8000ポートを指定すると。起動したコンテナの8080を経由するようポートして起動する。
docker run -itd --name apserver -p 8000:8080 --link dbserver1:dbserver debugroom/test:tomcat-springboot
docker exec -it apserver /bin/bash
Note
LINKオプションからIPアドレスとポートが参照可能なのは、２つのコンテナが同一のホスト上で実行されている場合である。異なるサーバの場合、コンテナ起動時に-eオプションを使って、直接IPアドレスとポートを指定する方法もあるが、Docker Ver1.9以降はマルチホストでIPアドレスとポートを共有する機能が追加されている。
起動後、しばらく時間が経過してから(APサーバが起動するまで少々時間がかかる)、curlコマンドを実行し動作確認する。
[centos@ip-XXX-XXX-XXX-XXX ~]$ curl http://localhost:8000/api/v1/users
[{"id":{"companyId":"0000000000","userId":"00000000"},"authorityLevel":0,"birthday":"20170101","isLogin":false,"loginId":"test.com","userName":"test","addresses":[],"credentials":[],"emails":[],"phones":[]}][centos@ip-172-31-31-80 ~]
CassandraクラスタDBサーバに接続するAPサーバの構築¶
前節 Cassandraクラスタサーバの構築 に接続するアプリケーションをDockerfileを使って、構築する。アプリケーションサーバはTomcatを使用するが、Spring Bootで組み込みTomcatの形式でAPサーバを構築する。なお、Spring Bootの基本的な使い方については、Spring Bootのサンプル を参照すること。また、Cassandraへ接続するアプリケーションは Cassandraのデータモデル検証 で構築したものを前提にCassandraクラスタへ接続するための設定を行う。実際の実装は GitHubページ を参照すること。
まず、Spring Data Cassandraを使って、クラスタ化したCassadraへアクセスするための設定クラスを作成する。CassandraClusterFactoryBeanのContactPointsプロパティに環境変数からクラスタ接続するDBサーバのIPとポートを取得できるよう、cluster()メソッドを実装する。
package org.debugroom.sample.cassandra.config.env; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Profile; import org.springframework.core.env.Environment; import org.springframework.data.cassandra.config.CassandraClusterFactoryBean; import org.debugroom.sample.cassandra.config.infra.CommonCassandraConfig; @Configuration @Profile("cluster") public class CommonClusterConfig extends CommonCassandraConfig{ @Autowired private Environment env; @Override protected String getKeyspaceName() { return "sample"; } @Bean public CassandraClusterFactoryBean cluster() { CassandraClusterFactoryBean cluster = new CassandraClusterFactoryBean(); cluster.setContactPoints(env.getProperty("cassandra.contactpoints")); cluster.setPort(Integer.parseInt(env.getProperty("cassandra.port"))); return cluster; } }
src/main/resources/application-cluster.yml¶
cassandra:
contactpoints: ${dbserver.port.9042.tcp.addr}
port: ${dbserver.port.9042.tcp.port}
Note
このアプリケーションでは、プロファイルclusterを指定した場合、当該設定クラスが有効になるように、@Profileアノテーションを指定している。設定ファイルapplication-cluster.ymlも同様、プロファイルをclusterに指定した場合、有効になる。
Note
DBサーバへの接続IPアドレスとポートは、Dockerのlinkオプションを使って、Dockerコンテナから環境変数<エイリアス名>_PORT_<ポート番号>_TCP_ADDRおよび、<エイリアス名>_PORT_<ポート番号>_TCP_PORTから参照可能である。エイリアス名はAPサーバのコンテナ起動時に、ポートはDBサーバのコンテナ起動時に指定するが、ここでは、エイリアス名をDBSERVER、ポートを9042とすることを前提に、DBSERVER_PORT_9042_TCP_ADDRおよび、DBSERVER_PORT_9042_TCP_PORTが環境変数として設定されるものとして定義しておく。
SpringBootでAPサーバを起動した時のログ(catalina.outに相当)確認のために、設定ファイルにログ出力の設定を追加しておく。
src/main/resources/application.yml¶
spring:
profiles:
active: pattern2, cluster
logging:
file: logs/app.log
level:
org.springframework.web: INFO
こうして作成したアプリケーションをDockerコンテナ上でMavenでビルドを行い、LaunchするためのDockerfileを作成する。ベースはCentOS7でOpenJDK1.8をインストールした後、Mavenをインストールし、アプリケーションをビルドしてポート8080でサーバ起動する。
# Dockerfile for Spring Data Cassandra app using embedded tomcat server # Run parent directory because this app needs sample-spring-boot-parent for maven build. # ex) docker build -t <your image> ~/sample/ -f ~/sample/sample-spring-cassandra/Dockerfile FROM docker.io/centos:latest MAINTAINER debugroom RUN yum install -y \ java-1.8.0-openjdk \ java-1.8.0-openjdk-devel \ wget RUN wget http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo RUN sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo RUN yum install -y apache-maven ENV JAVA_HOME /etc/alternatives/jre ADD sample-spring-cassandra /var/local/sample-spring-cassandra ADD sample-spring-boot-parent /var/local/sample-spring-boot-parent RUN mvn install -f /var/local/sample-spring-cassandra/pom.xml EXPOSE 8080 CMD java -jar -Dspring.profiles.active=pattern1,cluster /var/local/sample-spring-cassandra/target/sample-spring-cassandra-1.0-SNAPSHOT.jar
Note
当該アプリケーションのMavenプロジェクトは別のparentプロジェクトが必要なため、Dockerファイルで別プロジェクトも追加できるよう、Dockerfileを配置した親ディレクトリを起点にDockerファイルを実行する。Dockerfileでは実行したディレクトリの親ディレクトリより上の相対パスは参照できないため、起点を親ディレクトリにしてfオプションを使って、Docker buildを実行する。
[centos@ip-XXX-XXX-XXX-XXX sample]$ docker build -t debugroom/test:spring-data-cassandra-app ~/sample/ -f ~/sample/sample-spring-cassandra/Dockerfile
Sending build context to Docker daemon 3.997 MB
Step 1 : FROM docker.io/centos:latest
---> 3bee3060bfc8
Step 2 : MAINTAINER debugroom
---> Using cache
---> 643ea12aaad5
Step 3 : RUN yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel wget
---> Using cache
---> 2724d01e7577
Step 4 : RUN wget http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo
---> Using cache
---> 4546d3011aa4
Step 5 : RUN sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo
---> Using cache
---> f32f19a4f1cb
Step 6 : RUN yum install -y apache-maven
---> Using cache
---> 275915d7ecae
Step 7 : ENV JAVA_HOME /etc/alternatives/jre
---> Using cache
---> 56863cbc1f04
Step 8 : ADD sample-spring-cassandra /var/local/sample-spring-cassandra
---> a316f1da2fd1
Removing intermediate container 53967e151175
Step 9 : ADD sample-spring-boot-parent /var/local/sample-spring-boot-parent
---> 15471086ce61
Removing intermediate container 252e325030e1
Step 10 : RUN mvn install -f /var/local/sample-spring-cassandra/pom.xml
---> Running in 83e4824e10d6
[INFO] Scanning for projects...
# omit...
[INFO] Installing /var/local/sample-spring-cassandra/target/sample-spring-cassandra-1.0-SNAPSHOT.jar to /root/.m2/repository/org/debugroom/sample-spring-cassandra/1.0-SNAPSHOT/sample-spring-cassandra-1.0-SNAPSHOT.jar
[INFO] Installing /var/local/sample-spring-cassandra/pom.xml to /root/.m2/repository/org/debugroom/sample-spring-cassandra/1.0-SNAPSHOT/sample-spring-cassandra-1.0-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:37 min
[INFO] Finished at: 2017-06-14T22:28:41+00:00
[INFO] Final Memory: 39M/561M
[INFO] ------------------------------------------------------------------------
---> 2f7a7d3ef8f5
Removing intermediate container 83e4824e10d6
Step 11 : EXPOSE 8080
---> Running in 3671414783e2
---> 153a150357aa
Removing intermediate container 3671414783e2
Step 12 : CMD java -jar -Dspring.profiles.active=pattern1,cluster /var/local/sample-spring-cassandra/target/sample-spring-cassandra-1.0-SNAPSHOT.jar
---> Running in 23e7bf873912
---> 956b57d2cb23
Removing intermediate container 23e7bf873912
Successfully built 956b57d2cb23
Cassandraクラスタサーバの構築 で構築したCassandraクラスタのIPアドレスとポートが環境変数として、設定された状態となるようLINKオプションを指定して、Dockerコンテナを起動する。
[centos@ip-XXX-XXX-XXX-XXX sample]$ docker run -itd --name apserver1 -p 8080:8080 --link cassandra-server1:dbserver debugroom/test:spring-data-cassandra-app
abedde75c6a1f5497bc16e9ff1b9962d61b012c3e4c9f942a160bb40f8f33030
[centos@ip-XXX-XXX-XXX-XXX sample]$ docker exec -ti apserver1 /bin/bash
Note
LINKオプションからIPアドレスとポートが参照可能なのは、２つのコンテナが同一のホスト上で実行されている場合である。異なるサーバの場合、コンテナ起動時に-eオプションを使って、直接IPアドレスとポートを指定する方法もあるが、Docker Ver1.9以降はマルチホストでIPアドレスとポートを共有する機能が追加されている。
Todo
マルチホストでIPアドレスとポートを共有する方法を検証する。