CentOS7安裝Docker與使用
阿新 • • 發佈：2017-07-03
docker
1.安裝docker yum install docker -y
[[email protected] jenkins]# docker version Client: Version: 1.12.6 API version: 1.24 Package version: docker-1.12.6-28.git1398f24.el7.centos.x86_64 Go version: go1.7.4 Git commit: 1398f24/1.12.6 Built: Fri May 26 17:28:18 2017 OS/Arch: linux/amd64 Cannot connect to the Docker daemon. Is the docker daemon running on this host?
[[email protected] jenkins]# service docker start Redirecting to /bin/systemctl start docker.service
2.使用docker
使用命令行的工具來檢索名字為“tutorial”的鏡像 [[email protected] jenkins]# docker search tutorial INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED docker.io docker.io/georgeyord/reactjs-tutorial This is the backend of the React comment b... 4 [OK] docker.io docker.io/egamas/docker-tutorial Funny manpages 2 [OK] docker.io docker.io/mhausenblas/kairosdb-tutorial GitHub fetcher for KairosDB tutorial 1 [OK] docker.io docker.io/mjansche/tts-tutorial Software for a Text-to-Speech tutorial 1 [OK] docker.io docker.io/odk211/spree-tutorial 1 [OK] docker.io docker.io/trausch/tutorial-delly Cancer Genomics Tutorial of Delly 1 [OK] docker.io docker.io/activeeon/par-connector-tutorial Do the par-connector tutorial with R. The ... 0 [OK] docker.io docker.io/ajyounge/muelu-tutorial Modified muelu tutorial 0 [OK] docker.io docker.io/algas/wercker-tutorial wercker tutorial 0 [OK] docker.io docker.io/biopython/biopython-tutorial Biopython with Tutorial running on top of ... 0 [OK] docker.io docker.io/camphor/python-tutorial camphor-/python-tutorial 0 [OK] docker.io docker.io/chris24walsh/flask-aws-tutorial Runs a simple flask webapp demo, with the ... 0 [OK] docker.io docker.io/delta2323/jnns2015-tutorial 0 [OK] docker.io docker.io/filipe/react-tutorial React comment box example, React tutorial:... 0 [OK] docker.io docker.io/guillon/qemu-tutorial Image for QEMU tutorial based on qemu-plugins 0 [OK] docker.io docker.io/kobe25/docker-tutorial Docker Tutorial 0 [OK] docker.io docker.io/locksmithdon/ssb-tutorial The image used in a Secure Scuttlebutt tut... 0 [OK] docker.io docker.io/michelesr/docker-tutorial Docker Tutorial 0 [OK] docker.io docker.io/onekit/rest-tutorial REST API server-side tutorial. How to do i... 0 [OK] docker.io docker.io/paulcos11/docker-tutorial docker tutorial 0 [OK] docker.io docker.io/rinnocente/gromed-ts-tutorial-2017 GRO[macs] + [plu]MED for the Trieste tutor... 0 [OK] docker.io docker.io/rubygem/hydra-tutorial Auto-Generated Image for Ruby Gem hydra-tu... 0 [OK] docker.io docker.io/sampige/koha-tutorial Koha Tutorial for Schools 0 [OK] docker.io docker.io/tiagofilipe12/bionode-watermill-tutorial This is a docker image for running bionode... 0 [OK] docker.io docker.io/zinuzoid/docker-swarm-tutorial-worker https://github.com/zinuzoid/docker-swarm-t... 0 [OK]
使用docker命令來下載鏡像 [[email protected] jenkins]# docker pull learn/tutorial Using default tag: latest Trying to pull repository docker.io/learn/tutorial ... latest: Pulling from docker.io/learn/tutorial 271134aeb542: Downloading [================> ] 23.25 MB/71.04 MB 271134aeb542: Downloading [================> ] 23.79 MB/71.04 MB 271134aeb542: Pull complete Digest: sha256:2933b82e7c2a72ad8ea89d58af5d1472e35dacd5b7233577483f58ff8f9338bd
查看已下載的鏡像 [[email protected] jenkins]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/learn/tutorial latest a7876479f1aa 4 years ago 128 MB
在docker容器中運行hello world! docker run命令有兩個參數，一個是鏡像名，一個是要在鏡像中運行的命令。 [[email protected] jenkins]# docker run learn/tutorial echo “hello word” “hello word”
在容器中安裝新的程序(wget命令) [[email protected] jenkins]# docker run learn/tutorial apt-get install -y wget Reading package lists... Building dependency tree... The following extra packages will be installed: libidn11 The following NEW packages will be installed: libidn11 wget 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 389 kB of archives. After this operation, 970 kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu/ precise/main libidn11 amd64 1.23-2 [112 kB] Get:2 http://archive.ubuntu.com/ubuntu/ precise/main wget amd64 1.13.4-2ubuntu1 [277 kB] debconf: delaying package configuration, since apt-utils is not installed Fetched 389 kB in 25s (15.5 kB/s) Selecting previously unselected package libidn11. (Reading database ... 7545 files and directories currently installed.) Unpacking libidn11 (from .../libidn11_1.23-2_amd64.deb) ... Selecting previously unselected package wget. Unpacking wget (from .../wget_1.13.4-2ubuntu1_amd64.deb) ... Setting up libidn11 (1.23-2) ... Setting up wget (1.13.4-2ubuntu1) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place
使用docker ps -l命令獲得安裝完wget命令之後容器的id。然後把這個鏡像保存為learn/wget。 [[email protected] jenkins]# docker ps -l CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ea5537bf71f7 learn/tutorial "apt-get install -y w" 54 seconds ago Exited (0) 27 seconds ago kickass_aryabhata
保存對容器的修改 [[email protected] jenkins]# docker commit ea5537bf71f7 learn/wget sha256:7c5939899fb36a9aed6b7dc9e12edd3704cef1ae5a3e9ae52ea714082e79e972 執行完docker commit命令之後，返回新版本鏡像的id號
運行新的鏡像 到現在為止，我們已經建立了一個完整的、自成體系的docker環境，並且安裝了wget命令在裏面。它可以在任何支持docker環境的系統中運行 在新的鏡像中運行wget “http://blog.csdn.net/yown” 命令。 [[email protected] jenkins]# docker run learn/wget wget “http://blog.csdn.net/yown” “http://blog.csdn.net/yown”: Scheme missing.
[[email protected] jenkins]# docker ps -l CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 2e16a889dfa1 learn/wget "wget “http://blog." 5 minutes ago Exited (1) 5 minutes ago focused_dubinsky
檢查運行中的鏡像
[[email protected] jenkins]# docker inspect ea5537bf71f7
[
{
"Id": "ea5537bf71f7263ceaf58d0246fc9705dce97cc4e57dab08eebd280a469bbc03",
"Created": "2017-07-03T07:45:17.356235721Z",
"Path": "apt-get",
"Args": [
"install",
"-y",
"wget"
],
"State": {
"Status": "exited",
"Running": false,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 0,
"ExitCode": 0,
"Error": "",
"StartedAt": "2017-07-03T07:45:17.800829779Z",
"FinishedAt": "2017-07-03T07:45:44.067117909Z"
},
"Image": "sha256:a7876479f1aae32c0716d7a85b5151af26f533fe48efa086010105cba02f5163",
"ResolvConfPath": "/var/lib/docker/containers/ea5537bf71f7263ceaf58d0246fc9705dce97cc4e57dab08eebd280a469bbc03/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/ea5537bf71f7263ceaf58d0246fc9705dce97cc4e57dab08eebd280a469bbc03/hostname",
"HostsPath": "/var/lib/docker/containers/ea5537bf71f7263ceaf58d0246fc9705dce97cc4e57dab08eebd280a469bbc03/hosts",
"LogPath": "",
"Name": "/kickass_aryabhata",
"RestartCount": 0,
"Driver": "devicemapper",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": null,
"ContainerIDFile": "",
"LogConfig": {
"Type": "journald",
"Config": {}
},
"NetworkMode": "default",
"PortBindings": {},
"RestartPolicy": {
"Name": "no",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": null,
"CapDrop": null,
"Dns": [],
"DnsOptions": [],
"DnsSearch": [],
"ExtraHosts": null,
"GroupAdd": null,
"IpcMode": "",
"Cgroup": "",
"Links": null,
"OomScoreAdj": 0,
"PidMode": "",
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": null,
"UTSMode": "",
"UsernsMode": "",
"ShmSize": 67108864,
"Runtime": "docker-runc",
"ConsoleSize": [
0,
0
],
"Isolation": "",
"CpuShares": 0,
"Memory": 0,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": null,
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": [],
"DiskQuota": 0,
"KernelMemory": 0,
"MemoryReservation": 0,
"MemorySwap": 0,
"MemorySwappiness": -1,
"OomKillDisable": false,
"PidsLimit": 0,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0
},
"GraphDriver": {
"Name": "devicemapper",
"Data": {
"DeviceId": "6",
"DeviceName": "docker-253:1-528373-12c0f46fc46238bab100eec9a829f441b40439a9da2c6c097dbbe08d0528ad06",
"DeviceSize": "10737418240"
}
},
"Mounts": [],
"Config": {
"Hostname": "ea5537bf71f7",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": true,
"AttachStderr": true,
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [],
"Cmd": [
"apt-get",
"install",
"-y",
"wget"
],
"Image": "learn/tutorial",
"Volumes": {},
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": {}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "19d48e001859f8e25085fd4b13db7f925529541c3bef199514d6aaaf03ec621d",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": null,
"SandboxKey": "/var/run/docker/netns/19d48e001859",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"bridge": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "c178ae9004cdca9f3438687ccf856df3caf694a418864c722c7721f430c38eb2",
"EndpointID": "",
"Gateway": "",
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": ""
}
}
}
}
]如果發布自己的鏡像 :
a. 首先在www.docker.com註冊賬戶，登錄並在https://cloud.docker.com/repository/list 頁面創建自己的庫
b. 將剛才我們做的鏡像起個新的名字：
$docker tag learn/wget:latest yown/learn:latest
c. 在命令行登錄：
$docker login
d. 上傳
$docker push yown/learn:latest
Do you really want to push to public registry? [y/n]: y
The push refers to a repository [docker.io/yown/learn] (len: 1)
ad2245a8acd8: Pushing [=========================> ] 6.482 MB/12.48 MB
CentOS7安裝Docker與使用