ダチョウの頭はすっからかん: 8月 2017

2017年8月19日土曜日

docker pushでレジストリ登録、docker searchでレジストリを検索

[root@localhost ~]# docker push hogehogeRegistry/httpd
The push refers to a repository [docker.io/hogehogeRegistry/httpd]
9a6080c5a748: Pushed
5f70bf18a086: Layer already exists
8d12f3483b2e: Pushing [===============> ] 63.28 MB/203.1 MB
8d12f3483b2e: Pushed
ver1.0: digest: sha256:e83b5b43bc0addd182e8faa79ca6177b9c0764ccd23119a4a459fb3d280e8406 size: 1153
[root@localhost ~]#
[root@localhost ~]#
[root@localhost ~]# docker serch hogehogeRegistry/httpd
docker: 'serch' is not a docker command.
See 'docker --help'.
[root@localhost ~]# docker search hogehogeRegistry/httpd
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/httpd The Apache HTTP Server Project 1203 [OK]
docker.io docker.io/hypriot/rpi-busybox-httpd Raspberry Pi compatible Docker Image with ... 36
docker.io docker.io/centos/httpd 14 [OK]
docker.io docker.io/armhf/httpd The Apache HTTP Server Project 8
docker.io docker.io/macadmins/netboot-httpd use in combination with bruienne/bsdpy 4 [OK]
docker.io docker.io/centos/httpd-24-centos7 Apache HTTP 2.4 Server 2
docker.io docker.io/lolhens/httpd Apache httpd 2 Server 2 [OK]
docker.io docker.io/i386/httpd The Apache HTTP Server Project 1
docker.io docker.io/lead4good/httpd-fpm httpd server which connects via fcgi proxy... 1 [OK]
docker.io docker.io/amd64/httpd 0
docker.io docker.io/antoineco/httpd Extra OS variants for the official HTTPd i... 0 [OK]
docker.io docker.io/childsb/httpd 0
docker.io docker.io/dockerpinata/httpd 0
docker.io docker.io/efrecon/httpd A micro-sized httpd. Start serving files i... 0 [OK]
docker.io docker.io/interferex/httpd Simple HTTPd Server + TC Rate Limiting 0 [OK]
docker.io docker.io/jbpt/httpd 0 [OK]
docker.io docker.io/manageiq/httpd Container with httpd, built on CentOS for ... 0 [OK]
docker.io docker.io/manasip/httpd 0
docker.io docker.io/objectstyle/httpd ObjectStyle HTTPD Image 0 [OK]
docker.io docker.io/openbucks/httpd 0
docker.io docker.io/ppc64le/httpd The Apache HTTP Server Project 0
docker.io docker.io/publici/httpd httpd:latest 0 [OK]
docker.io docker.io/publicisworldwide/httpd The Apache httpd webserver. 0 [OK]
docker.io docker.io/trollin/httpd 0
docker.io docker.io/visualops/httpd 0
[root@localhost ~]# docker search hogehogeRegistry
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/hogehogeRegistry/httpd 0
[root@localhost ~]#

docker cpでコンテナ上のファイルをホスト側にコピーする

[root@localhost sysconfig]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0addec887dca yosizo/httpd:ver1.0 "/bin/bash" 34 minutes ago Up 34 minutes 0.0.0.0:8000->80/tcp web01
[root@localhost sysconfig]# docker cp web01:/var/log/httpd /tmp
[root@localhost sysconfig]# ls -la /tmp/httpd
合計 12
drwx------. 2 root root 41 8月 19 11:29 .
drwxrwxrwt. 20 root root 4096 8月 19 12:04 ..
-rw-r--r--. 1 root root 422 8月 19 11:31 access_log
-rw-r--r--. 1 root root 476 8月 19 11:31 error_log
[root@localhost sysconfig]#

2017年8月18日金曜日

コンテナ上でhttpdを起動・ブラウザでアクセスしてみる

[root@localhost sysconfig]# docker run -it -p 8000:80 --name web01 yosizo/httpd;ver1.0 /bin/bash
Unable to find image 'yosizo/httpd:latest' locally
Trying to pull repository docker.io/yosizo/httpd ...
Pulling repository docker.io/yosizo/httpd
/usr/bin/docker-current: Tag latest not found in repository docker.io/yosizo/httpd.
See '/usr/bin/docker-current run --help'.
bash: ver1.0: コマンドが見つかりませんでした...
[root@localhost sysconfig]# docker run -it -p 8000:80 --name web01 yosizo/httpd:ver1.0 /bin/bash
[root@0addec887dca /]#
[root@0addec887dca /]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 02:26 ? 00:00:00 /bin/bash
root 13 1 0 02:26 ? 00:00:00 ps -ef
[root@0addec887dca /]# ls -l /var/www/html/
total 0
[root@0addec887dca /]# touch /var/www/html/index.html
[root@0addec887dca /]# vi /var/www/html/index.html
<h1>Hello,Docker/<h1>
~
"/var/www/html/index.html" 1L, 22C written
[root@0addec887dca /]# cat /var/www/html/index.html
<h1>Hello,Docker/<h1>
[root@0addec887dca /]# service httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 172.17.0.2 for ServerName
[ OK ]
[root@0addec887dca /]#
[root@localhost sysconfig]#

→ブラウザからアクセスしてみると表示された。

docker rmでコンテナを削除する

[root@localhost sysconfig]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
956ebd5d66b4 enakai00/centos:centos6 "/bin/bash" 26 hours ago Exited (0) 6 minutes ago centos01
[root@localhost sysconfig]#
[root@localhost sysconfig]# docker rm centos01
centos01
[root@localhost sysconfig]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@localhost sysconfig]#

docker commitによるスナップショットの複製と新リポジトリーの作成

docker commit centos01 yosizo/httpd:ver1.0
docker commit [イメージ名] [リポジトリ名:タグ名]
→commitサブコマンドで対象のイメージを指定、作成するリポジトリ名を指定

[root@localhost sysconfig]# docker attach centos01
[root@956ebd5d66b4 /]#
[root@956ebd5d66b4 /]# exit
exit
[root@localhost sysconfig]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
956ebd5d66b4 enakai00/centos:centos6 "/bin/bash" 26 hours ago Exited (0) 5 seconds ago centos01
[root@localhost sysconfig]#
[root@localhost sysconfig]# docker commit centos01 yosizo/httpd:ver1.0
sha256:24a55adfc23e9963b2771a0acfae076954c26f0d1b841202e0ada476efaeadde
[root@localhost sysconfig]#
[root@localhost sysconfig]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
yosizo/httpd ver1.0 24a55adfc23e 8 seconds ago 267.7 MB
docker.io/enakai00/centos centos6 b8c94c5d2d7c 2 years ago 203.1 MB
docker.io/enakai00/centos centos7 3bd78cf8ed76 2 years ago 172.2 MB
docker.io/enakai00/centos latest 3bd78cf8ed76 2 years ago 172.2 MB
[root@localhost sysconfig]#
[root@localhost sysconfig]# docker images yosizo/httpd:ver1.0
REPOSITORY TAG IMAGE ID CREATED SIZE
yosizo/httpd ver1.0 24a55adfc23e 46 seconds ago 267.7 MB
[root@localhost sysconfig]#

docker stop,start,attach:コンテナの停止/起動/アクセスする

[root@localhost sysconfig]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
956ebd5d66b4 enakai00/centos:centos6 "/bin/bash" 26 hours ago Up 12 minutes centos01
[root@localhost sysconfig]# docker stop centos01
centos01
[root@localhost sysconfig]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
956ebd5d66b4 enakai00/centos:centos6 "/bin/bash" 26 hours ago Exited (137) 3 seconds ago centos01
[root@localhost sysconfig]#
[root@localhost sysconfig]# docker start centos01
centos01
[root@localhost sysconfig]# docker attach centos01
[root@956ebd5d66b4 /]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 02:11 ? 00:00:00 /bin/bash
root 13 1 0 02:11 ? 00:00:00 ps -ef
[root@956ebd5d66b4 /]#

コンテナのOSにhttpdをインストールする

[root@956ebd5d66b4 /]# yum -y install httpd
Loaded plugins: fastestmirror
Setting up Install Process
base | 3.7 kB 00:00
base/primary_db | 4.7 MB 00:04
extras | 3.4 kB 00:00
extras/primary_db | 29 kB 00:00
updates | 3.4 kB 00:00
updates/primary_db | 2.5 MB 00:02
Resolving Dependencies
--> Running transaction check
---> Package httpd.x86_64 0:2.2.15-60.el6.centos.5 will be installed
--> Processing Dependency: httpd-tools = 2.2.15-60.el6.centos.5 for package: httpd-2.2.15-60.el6.centos.5.x86_64
--> Processing Dependency: system-logos >= 7.92.1-1 for package: httpd-2.2.15-60.el6.centos.5.x86_64
--> Processing Dependency: apr-util-ldap for package: httpd-2.2.15-60.el6.centos.5.x86_64
--> Processing Dependency: /etc/mime.types for package: httpd-2.2.15-60.el6.centos.5.x86_64
--> Processing Dependency: libaprutil-1.so.0()(64bit) for package: httpd-2.2.15-60.el6.centos.5.x86_64
--> Processing Dependency: libapr-1.so.0()(64bit) for package: httpd-2.2.15-60.el6.centos.5.x86_64
--> Running transaction check
---> Package apr.x86_64 0:1.3.9-5.el6_2 will be installed
---> Package apr-util.x86_64 0:1.3.9-3.el6_0.1 will be installed
---> Package apr-util-ldap.x86_64 0:1.3.9-3.el6_0.1 will be installed
---> Package httpd-tools.x86_64 0:2.2.15-60.el6.centos.5 will be installed
---> Package mailcap.noarch 0:2.1.31-2.el6 will be installed
---> Package redhat-logos.noarch 0:60.0.14-12.el6.centos will be installed
--> Finished Dependency Resolution

Dependencies Resolved

============================================================================================================================================================================
Package Arch Version Repository Size
============================================================================================================================================================================
Installing:
httpd x86_64 2.2.15-60.el6.centos.5 updates 836 k
Installing for dependencies:
apr x86_64 1.3.9-5.el6_2 base 123 k
apr-util x86_64 1.3.9-3.el6_0.1 base 87 k
apr-util-ldap x86_64 1.3.9-3.el6_0.1 base 15 k
httpd-tools x86_64 2.2.15-60.el6.centos.5 updates 80 k
mailcap noarch 2.1.31-2.el6 base 27 k
redhat-logos noarch 60.0.14-12.el6.centos base 15 M

Transaction Summary
============================================================================================================================================================================
Install 7 Package(s)

Total download size: 16 M
Installed size: 19 M
Downloading Packages:
(1/7): apr-1.3.9-5.el6_2.x86_64.rpm | 123 kB 00:00
(2/7): apr-util-1.3.9-3.el6_0.1.x86_64.rpm | 87 kB 00:00
(3/7): apr-util-ldap-1.3.9-3.el6_0.1.x86_64.rpm | 15 kB 00:00
(4/7): httpd-2.2.15-60.el6.centos.5.x86_64.rpm | 836 kB 00:00
(5/7): httpd-tools-2.2.15-60.el6.centos.5.x86_64.rpm | 80 kB 00:00
(6/7): mailcap-2.1.31-2.el6.noarch.rpm | 27 kB 00:00
(7/7): redhat-logos-60.0.14-12.el6.centos.noarch.rpm | 15 MB 00:06
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 2.1 MB/s | 16 MB 00:07
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID c105b9de: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Importing GPG key 0xC105B9DE:
Userid : CentOS-6 Key (CentOS 6 Official Signing Key) <centos-6-key@centos.org>
Package: centos-release-6-6.el6.centos.12.2.x86_64 (@CentOS/$releasever)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
Installing : apr-1.3.9-5.el6_2.x86_64 1/7
Installing : apr-util-1.3.9-3.el6_0.1.x86_64 2/7
Installing : apr-util-ldap-1.3.9-3.el6_0.1.x86_64 3/7
Installing : httpd-tools-2.2.15-60.el6.centos.5.x86_64 4/7
Installing : mailcap-2.1.31-2.el6.noarch 5/7
Installing : redhat-logos-60.0.14-12.el6.centos.noarch 6/7
Installing : httpd-2.2.15-60.el6.centos.5.x86_64 7/7
Verifying : apr-util-ldap-1.3.9-3.el6_0.1.x86_64 1/7
Verifying : apr-1.3.9-5.el6_2.x86_64 2/7
Verifying : redhat-logos-60.0.14-12.el6.centos.noarch 3/7
Verifying : httpd-2.2.15-60.el6.centos.5.x86_64 4/7
Verifying : mailcap-2.1.31-2.el6.noarch 5/7
Verifying : apr-util-1.3.9-3.el6_0.1.x86_64 6/7
Verifying : httpd-tools-2.2.15-60.el6.centos.5.x86_64 7/7

Installed:
httpd.x86_64 0:2.2.15-60.el6.centos.5

Dependency Installed:
apr.x86_64 0:1.3.9-5.el6_2 apr-util.x86_64 0:1.3.9-3.el6_0.1 apr-util-ldap.x86_64 0:1.3.9-3.el6_0.1 httpd-tools.x86_64 0:2.2.15-60.el6.centos.5
mailcap.noarch 0:2.1.31-2.el6 redhat-logos.noarch 0:60.0.14-12.el6.centos

Complete!
[root@956ebd5d66b4 /]#

/etc/sysconfig/dockerのオプション追加

/etc/sysconfig/dockerのオプション追加
コンテナイメージに対するディスク性能の最適化が行われていないことに対する、警告メッセージの抑止対応とのこと。

[root@localhost sysconfig]# ls -l docker
-rw-r--r--. 1 root root 2111 8月 19 10:47 docker
[root@localhost sysconfig]# cat /etc/sysconfig/docker
# /etc/sysconfig/docker

# Modify these options if you want to change the way the docker daemon runs
#OPTIONS='--selinux-enabled --log-driver=journald --signature-verification=false'
OPTIONS='--selinux-enabled --log-driver=journald --signature-verification=false --storage-opt dm.no_warn_on_loop_devices=true'
if [ -z "${DOCKER_CERT_PATH}" ]; then
DOCKER_CERT_PATH=/etc/docker
fi

# If you want to add your own registry to be used for docker search and docker
# pull use the ADD_REGISTRY option to list a set of registries, each prepended
# with --add-registry flag. The first registry added will be the first registry
# searched.
#ADD_REGISTRY='--add-registry registry.access.redhat.com'

# If you want to block registries from being used, uncomment the BLOCK_REGISTRY
# option and give it a set of registries, each prepended with --block-registry
# flag. For example adding docker.io will stop users from downloading images
# from docker.io
# BLOCK_REGISTRY='--block-registry'

# If you have a registry secured with https but do not have proper certs
# distributed, you can tell docker to not look for full authorization by
# adding the registry to the INSECURE_REGISTRY line and uncommenting it.
# INSECURE_REGISTRY='--insecure-registry'

# On an SELinux system, if you remove the --selinux-enabled option, you
# also need to turn on the docker_transition_unconfined boolean.
# setsebool -P docker_transition_unconfined 1

# Location used for temporary files, such as those created by
# docker load and build operations. Default is /var/lib/docker/tmp
# Can be overriden by setting the following environment variable.
# DOCKER_TMPDIR=/var/tmp

# Controls the /etc/cron.daily/docker-logrotate cron job status.
# To disable, uncomment the line below.
# LOGROTATE=false
#

# docker-latest daemon can be used by starting the docker-latest unitfile.
# To use docker-latest client, uncomment below lines
#DOCKERBINARY=/usr/bin/docker-latest
#DOCKERDBINARY=/usr/bin/dockerd-latest
#DOCKER_CONTAINERD_BINARY=/usr/bin/docker-containerd-latest
#DOCKER_CONTAINERD_SHIM_BINARY=/usr/bin/docker-containerd-shim-latest
[root@localhost sysconfig]#

2017年8月17日木曜日

docker attachコマンドで起動しているコンテナを使用する

コンテナ「centos01」にアタッチして使用するというイメージ。

[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
956ebd5d66b4 enakai00/centos:centos6 "/bin/bash" 17 minutes ago Up 17 minutes centos01
[root@localhost ~]#
[root@localhost ~]# docker attach centos01
[root@956ebd5d66b4 /]#

docker psコマンドで稼働中のコンテナを確認する

[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
956ebd5d66b4 hogehogeRepository/centos:centos6 "/bin/bash" 17 minutes ago Up 17 minutes centos01
[root@localhost ~]#

コンテナからホストOSに抜けるためにctrl+P+Qを押す

コンテナからホストOSに抜けるためにctrl+P+Qを押す

[root@956ebd5d66b4 /]#
[root@956ebd5d66b4 /]# <==（ここでctrl+P+Qを押すと抜けれる）
[root@localhost ~]#

コンテナの中のネットワーク設定状況

[root@956ebd5d66b4 /]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 02:42:AC:11:00:02
inet addr:172.17.0.2 Bcast:0.0.0.0 Mask:255.255.0.0
inet6 addr: fe80::42:acff:fe11:2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:23 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2512 (2.4 KiB) TX bytes:648 (648.0 b)

[root@956ebd5d66b4 /]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 172.17.0.1 0.0.0.0 UG 0 0 0 eth0
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
[root@956ebd5d66b4 /]#

docker run:docker runコマンドでリポジトリ内のイメージのコンテナを起動する

docker runコマンドでリポジトリ内のイメージのコンテナを起動する
docker run -it --name centos01 [使用するイメージ名（リポジトリ名：イメージ名）]
→-itオプションはおまじないとして基本的にはつけておく。
→--nameオプションは起動するコンテナ名を指定する。つけないと適当な名前が付与されるらしい。

コンテナの起動と併せてbashを起動することで、起動したコンテナにて操作を行える。

[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/hogehogeRepository/centos centos6 b8c94c5d2d7c 2 years ago 203.1 MB
docker.io/hogehogeRepository/centos centos7 3bd78cf8ed76 2 years ago 172.2 MB
docker.io/hogehogeRepository/centos latest 3bd78cf8ed76 2 years ago 172.2 MB
[root@localhost ~]# docker run -it --name centos01 hogehogeRepository/centos:centos6 /bin/bash
[root@956ebd5d66b4 /]#
[root@956ebd5d66b4 /]# cat /etc/centos-release
CentOS release 6.6 (Final)
[root@956ebd5d66b4 /]# df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/docker-253:0-50488737-d54959bdb29a05cb10a65d049b237a8e5aaaab33d9fc84f6c1de1c4890d3ab49
10G 250M 9.8G 3% /
[root@956ebd5d66b4 /]#
[root@956ebd5d66b4 /]#
[root@956ebd5d66b4 /]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 23:46 ? 00:00:00 /bin/bash
root 15 1 0 23:48 ? 00:00:00 ps -ef
[root@956ebd5d66b4 /]#

docker pullとdocker images：リポジトリのダウンロードとリポジトリ内のイメージの一覧表示

①リポジトリをpullサブコマンドでダウンロードしてくる
docker pull -a hogehogeRepository/centos

②ダウンロードしてきたリポジトリ内のイメージの一覧を出力する

docker images

実行例①
[root@localhost ~]# docker pull -a hogehogeRepository/centos
Trying to pull repository docker.io/hogehogeRepository/centos ...
centos6: Pulling from docker.io/hogehogeRepository/centos

a3ed95caeb02: Pull complete
dfabbb82181a: Pull complete
Digest: sha256:1422c5ba80430ae5899e40774bb3033e71cba5589d1163e04b1b801698e61127
centos7: Pulling from docker.io/hogehogeRepository/centos

a3ed95caeb02: Pull complete
a5b52df5865b: Pull complete
Digest: sha256:5871aecd08cd037002d42ebb92cfe11a78c93806ab2275a627bf4551cc638855
latest: Pulling from docker.io/hogehogeRepository/centos

a3ed95caeb02: Already exists
a5b52df5865b: Already exists
Digest: sha256:49ecd6397d1f23deb245d3e0332862d68a9d34bb1d030066ae6175b8e9540c34
[root@localhost ~]#

実行例②

[root@localhost ~]# docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

docker.io/hogehogeRepository/centos centos6 b8c94c5d2d7c 2 years ago 203.1 MB

docker.io/hogehogeRepository/centos centos7 3bd78cf8ed76 2 years ago 172.2 MB

docker.io/hogehogeRepository/centos latest 3bd78cf8ed76 2 years ago 172.2 MB

[root@localhost ~]#

docker searchでリポジトリを検索する

docker searchでリポジトリを検索する時の実行例
docker search hogehogeRepository
→hogehogeRepositoryというリポジトリを検索。
→docker.ioはdockerHubを表現
→hogehogeRepository/centosはリポジトリを表現

[root@localhost ~]# docker search hogehogeRepository
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/hogehogeRepository/jupyter_tensorflow 3
docker.io docker.io/hogehogeRepository/app 0
docker.io docker.io/hogehogeRepository/centos Sample CentOS repository for dockerbon. 0
docker.io docker.io/hogehogeRepository/dbs 0
docker.io docker.io/hogehogeRepository/eplite 0
docker.io docker.io/hogehogeRepository/epmysql 0
docker.io docker.io/hogehogeRepository/fedora Sample fedora repository for dockerbon. 0
docker.io docker.io/hogehogeRepository/httpd 0
docker.io docker.io/hogehogeRepository/ostools 0
docker.io docker.io/hogehogeRepository/test-httpd 0
docker.io docker.io/hogehogeRepository/vcp_base 0
docker.io docker.io/hogehogeRepository/web 0
docker.io docker.io/yacchin1205/hogehogeRepository-tensorflow-kernel 0
[root@localhost ~]#

dockerコマンドのmanページ、サブコマンドの確認

[root@localhost ~]# man docker

DOCKER(1) APRIL 2014 DOCKER(1)

NAME
docker - Docker image and container command line interface

SYNOPSIS
docker [OPTIONS] COMMAND [arg...]

docker daemon [--help|...]

docker [--help|-v|--version]

DESCRIPTION
is a client for interacting with the daemon (see dockerd(8)) through the CLI.

The Docker CLI has over 30 commands. The commands are listed below and each has its own man page which explain
usage and arguments.

To see the man page for a command run man docker <command>.

OPTIONS
--help
Print usage statement

--config=""
Specifies the location of the Docker client configuration files. The default is ' /.docker'.

-D, --debug=true|false
Enable debug mode. Default is false.

-H, --host=[unix:///var/run/docker.sock]: tcp://[host]:[port][path] to bind or unix://[/path/to/socket] to use.
The socket(s) to bind to in daemon mode specified using one or more
tcp://host:port/path, unix:///path/to/socket, fd://* or fd://socketfd.
If the tcp port is not specified, then it will default to either 2375 when
--tls is off, or 2376 when --tls is on, or --tlsverify is specified.

-l, --log-level="debug|info|warn|error|fatal"
Set the logging level. Default is info.

--tls=true|false
Use TLS; implied by --tlsverify. Default is false.

--tlscacert= /.docker/ca.pem
Trust certs signed only by this CA.

--tlscert= /.docker/cert.pem
Path to TLS certificate file.

--tlskey= /.docker/key.pem
Path to TLS key file.

--tlsverify=true|false
Use TLS and verify the remote (daemon: verify client, client: verify daemon).
[root@localhost ~]#man dokcer-run
DOCKER(1) JUNE 2014 DOCKER(1)

NAME
docker-run - Run a command in a new container

SYNOPSIS
docker run [-a|--attach[=[]]] [--add-host[=[]]] [--blkio-weight[=[BLKIO-WEIGHT]]] [--blkio-weight-device[=[]]]
[--cpu-shares[=0]] [--cap-add[=[]]] [--cap-drop[=[]]] [--cgroup-parent[=CGROUP-PATH]] [--cidfile[=CIDFILE]]
[--cpu-period[=0]] [--cpu-quota[=0]] [--cpuset-cpus[=CPUSET-CPUS]] [--cpuset-mems[=CPUSET-MEMS]] [-d|--detach]
[--detach-keys[=[]]] [--device[=[]]] [--device-read-bps[=[]]] [--device-read-iops[=[]]] [--device-write-bps[=[]]]
[--device-write-iops[=[]]] [--dns[=[]]] [--dns-opt[=[]]] [--dns-search[=[]]] [-e|--env[=[]]] [--entrypoint[=ENTRY‐
POINT]] [--env-file[=[]]] [--expose[=[]]] [--group-add[=[]]] [-h|--hostname[=HOSTNAME]] [--help] [-i|--interac‐
tive] [--ip[=IPv4-ADDRESS]] [--ip6[=IPv6-ADDRESS]] [--ipc[=IPC]] [--isolation[=default]] [--kernel-memory[=KER‐
NEL-MEMORY]] [-l|--label[=[]]] [--label-file[=[]]] [--link[=[]]] [--link-local-ip[=[]]] [--log-driver[=[]]]
[--log-opt[=[]]] [-m|--memory[=MEMORY]] [--mac-address[=MAC-ADDRESS]] [--memory-reservation[=MEMORY-RESERVATION]]
[--memory-swap[=LIMIT]] [--memory-swappiness[=MEMORY-SWAPPINESS]] [--name[=NAME]] [--network-alias[=[]]] [--net‐
work[="bridge"]] [--oom-kill-disable] [--oom-score-adj[=0]] [-P|--publish-all] [-p|--publish[=[]]] [--pid[=[PID]]]
[--userns[=[]]] [--pids-limit[=PIDS_LIMIT]] [--privileged] [--read-only] [--restart[=RESTART]] [--rm] [--secu‐
rity-opt[=[]]] [--storage-opt[=[]]] [--stop-signal[=SIGNAL]] [--shm-size[=[]]] [--sig-proxy[=true]]
[--sysctl[=[]]] [-t|--tty] [--tmpfs[=[CONTAINER-DIR[:<OPTIONS>]]] [-u|--user[=USER]] [--ulimit[=[]]] [--uts[=[]]]
[-v|--volume[=[[HOST-DIR:]CONTAINER-DIR[:OPTIONS]]]] [--volume-driver[=DRIVER]] [--volumes-from[=[]]]
[-w|--workdir[=WORKDIR]] IMAGE [COMMAND] [ARG...]

DESCRIPTION
Run a process in a new container. docker run starts a process with its own file system, its own networking, and
its own isolated process tree. The IMAGE which starts the process may define defaults related to the process that
will be run in the container, the networking to expose, and more, but docker run gives final control to the opera‐
tor or administrator who starts the container from the image. For that reason docker run has more options than any
other Docker command.

If the IMAGE is not already loaded then docker run will pull the IMAGE, and all image dependencies, from the
repository in the same way running docker pull IMAGE, before it starts the container from that image.

OPTIONS
-a, --attach=[]
Attach to STDIN, STDOUT or STDERR.

In foreground mode (the default when -d is not specified), docker run can start the process in the container and
attach the console to the process's standard input, output, and standard error. It can even pretend to be a TTY
(this is what most commandline executables expect) and pass along signals. The -a option can be set for each of
stdin, stdout, and stderr.

--add-host=[]
Add a custom host-to-IP mapping (host:ip)

Add a line to /etc/hosts. The format is hostname:ip. The --add-host option can be set multiple times.

--blkio-weight=0
Block IO weight (relative weight) accepts a weight value between 10 and 1000.

--blkio-weight-device=[]
Block IO weight (relative device weight, format: DEVICE_NAME:WEIGHT).

dockerインストール

OS:centos7

前提：yum -y updateを実行済み

[root@localhost ~]# systemctl stop firewalld.service

[root@localhost ~]# systemctl mask firewalld.service

Created symlink from /etc/systemd/system/firewalld.service to /dev/null.

[root@localhost ~]#

[root@localhost ~]# yum -y install docker

読み込んだプラグイン:fastestmirror, langpacks

Loading mirror speeds from cached hostfile

* base: ftp.iij.ad.jp

* extras: ftp.iij.ad.jp

* updates: ftp.iij.ad.jp

依存性の解決をしています

--> トランザクションの確認を実行しています。

---> パッケージ docker.x86_64 2:1.12.6-32.git88a4867.el7.centos をインストール

--> 依存性の処理をしています: docker-common = 2:1.12.6-32.git88a4867.el7.centos のパッケージ: 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64

--> 依存性の処理をしています: docker-client = 2:1.12.6-32.git88a4867.el7.centos のパッケージ: 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64

--> 依存性の処理をしています: oci-systemd-hook >= 1:0.1.4-9 のパッケージ: 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64

--> 依存性の処理をしています: oci-register-machine >= 1:0-3.10 のパッケージ: 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64

--> 依存性の処理をしています: container-selinux >= 2:2.12-2 のパッケージ: 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64

--> 依存性の処理をしています: skopeo-containers のパッケージ: 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64

--> トランザクションの確認を実行しています。

---> パッケージ container-selinux.noarch 2:2.19-2.1.el7 をインストール

---> パッケージ docker-client.x86_64 2:1.12.6-32.git88a4867.el7.centos をインストール

---> パッケージ docker-common.x86_64 2:1.12.6-32.git88a4867.el7.centos をインストール

---> パッケージ oci-register-machine.x86_64 1:0-3.11.gitdd0daef.el7 をインストール

---> パッケージ oci-systemd-hook.x86_64 1:0.1.7-4.gite533efa.el7 をインストール

---> パッケージ skopeo-containers.x86_64 1:0.1.20-2.el7 をインストール

--> 依存性解決を終了しました。

依存性を解決しました

=============================================================================================================================

Package アーキテクチャーバージョンリポジトリー容量

=============================================================================================================================

インストール中:

docker x86_64 2:1.12.6-32.git88a4867.el7.centos extras 14 M

依存性関連でのインストールをします:

container-selinux noarch 2:2.19-2.1.el7 extras 28 k

docker-client x86_64 2:1.12.6-32.git88a4867.el7.centos extras 3.2 M

docker-common x86_64 2:1.12.6-32.git88a4867.el7.centos extras 77 k

oci-register-machine x86_64 1:0-3.11.gitdd0daef.el7 extras 1.0 M

oci-systemd-hook x86_64 1:0.1.7-4.gite533efa.el7 extras 30 k

skopeo-containers x86_64 1:0.1.20-2.el7 extras 7.8 k

トランザクションの要約

=============================================================================================================================

インストール 1 パッケージ (+6 個の依存関係のパッケージ)

総ダウンロード容量: 19 M

インストール容量: 64 M

Downloading packages:

(1/7): container-selinux-2.19-2.1.el7.noarch.rpm | 28 kB 00:00:00

(2/7): oci-systemd-hook-0.1.7-4.gite533efa.el7.x86_64.rpm | 30 kB 00:00:00

(3/7): skopeo-containers-0.1.20-2.el7.x86_64.rpm | 7.8 kB 00:00:00

(4/7): docker-common-1.12.6-32.git88a4867.el7.centos.x86_64.rpm | 77 kB 00:00:00

(5/7): oci-register-machine-0-3.11.gitdd0daef.el7.x86_64.rpm | 1.0 MB 00:00:01

(6/7): docker-client-1.12.6-32.git88a4867.el7.centos.x86_64.rpm | 3.2 MB 00:00:02

(7/7): docker-1.12.6-32.git88a4867.el7.centos.x86_64.rpm | 14 MB 00:00:39

-----------------------------------------------------------------------------------------------------------------------------

合計 477 kB/s | 19 MB 00:00:39

Running transaction check

Running transaction test

Transaction test succeeded

Running transaction

インストール中 : 2:docker-common-1.12.6-32.git88a4867.el7.centos.x86_64 1/7

インストール中 : 2:docker-client-1.12.6-32.git88a4867.el7.centos.x86_64 2/7

インストール中 : 1:skopeo-containers-0.1.20-2.el7.x86_64 3/7

インストール中 : 1:oci-register-machine-0-3.11.gitdd0daef.el7.x86_64 4/7

インストール中 : 2:container-selinux-2.19-2.1.el7.noarch 5/7

インストール中 : 1:oci-systemd-hook-0.1.7-4.gite533efa.el7.x86_64 6/7

Stopping containers...

Cannot connect to the Docker daemon. Is the docker daemon running on this host?

"docker stop" requires at least 1 argument(s).

See 'docker stop --help'.

Usage: docker stop [OPTIONS] CONTAINER [CONTAINER...]

Stop one or more running containers

インストール中 : 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64 7/7

検証中 : 2:docker-1.12.6-32.git88a4867.el7.centos.x86_64 1/7

検証中 : 1:oci-systemd-hook-0.1.7-4.gite533efa.el7.x86_64 2/7

検証中 : 2:container-selinux-2.19-2.1.el7.noarch 3/7

検証中 : 2:docker-common-1.12.6-32.git88a4867.el7.centos.x86_64 4/7

検証中 : 1:oci-register-machine-0-3.11.gitdd0daef.el7.x86_64 5/7

検証中 : 1:skopeo-containers-0.1.20-2.el7.x86_64 6/7

検証中 : 2:docker-client-1.12.6-32.git88a4867.el7.centos.x86_64 7/7

インストール:

docker.x86_64 2:1.12.6-32.git88a4867.el7.centos

依存性関連をインストールしました:

container-selinux.noarch 2:2.19-2.1.el7 docker-client.x86_64 2:1.12.6-32.git88a4867.el7.centos

docker-common.x86_64 2:1.12.6-32.git88a4867.el7.centos oci-register-machine.x86_64 1:0-3.11.gitdd0daef.el7

oci-systemd-hook.x86_64 1:0.1.7-4.gite533efa.el7 skopeo-containers.x86_64 1:0.1.20-2.el7

完了しました!

[root@localhost ~]#

[root@localhost ~]# docker -v

Docker version 1.12.6, build 88a4867/1.12.6

[root@localhost ~]#

[root@localhost ~]# systemctl enable docker.service

Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

[root@localhost ~]# systemctl start docker.service

[root@localhost ~]#

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