CentOS7安装Docker与使用
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1.安装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
使用命令行的工具来检索名字为“tutorial”的镜像 [[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命令来下载镜像 [[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
查看已下载的镜像 [[email protected] jenkins]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/learn/tutorial latest a7876479f1aa 4 years ago 128 MB
在docker容器中运行hello world! docker run命令有两个参数，一个是镜像名，一个是要在镜像中运行的命令。 [[email protected] jenkins]# docker run learn/tutorial echo “hello word” “hello word”
在容器中安装新的程序(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命令获得安装完wget命令之后容器的id。然后把这个镜像保存为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
保存对容器的修改 [[email protected] jenkins]# docker commit ea5537bf71f7 learn/wget sha256:7c5939899fb36a9aed6b7dc9e12edd3704cef1ae5a3e9ae52ea714082e79e972 执行完docker commit命令之后，返回新版本镜像的id号
运行新的镜像 到现在为止，我们已经建立了一个完整的、自成体系的docker环境，并且安装了wget命令在里面。它可以在任何支持docker环境的系统中运行 在新的镜像中运行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
检查运行中的镜像 [[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": "" } } } } ]
如果发布自己的镜像 :
a. 首先在www.docker.com注册账户，登录并在https://cloud.docker.com/repository/list 页面创建自己的库
b. 将刚才我们做的镜像起个新的名字：
$docker tag learn/wget:latest yown/learn:latest
c. 在命令行登录：
$docker login
d. 上传
$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
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