Docker初次接触

本文发布时间: 2019-Mar-22
Docker 初次接触最近看了不少docker介绍性文章,也听了不少公开课,于是今天去官网逛了逛,发现了一个交互式的小教程于是决定跟着学习下。只是把觉得重点的知识记录下来,不是很系统的学习和笔记。理论部分Docker 引擎包含了两个部分,一个守护进程作为服务器端来管理所有的容器。一个客户端,可以远程来控制服务端。Docker有公共的云端仓库 Docker Hub Registry,里面有可以使用的镜像你可以认为容器containers就是沙箱box中的一个进程。这个盒子中包括了所有一个进程需要的东西,文件系统,系统库,shell等等,只是默认情况下他们是没有运行的。我们可以在操纵和改变容器,然后通过命令保存成新的镜像在需要使用容器id的地方,我们可以只输入前几个字符操作部分docker help 可以查看能使用的命令和简单描述查看版本you@tutorial:~$ docker versionDocker Emulator version 0.1.3Emulating:Client version: 0.5.3Server version: 0.5.3Go version: go1.1从公共云仓库中查找一个镜像 tutorialyou@tutorial:~$ docker search tutorialFound 1 results matching your query (“tutorial”)NAME DESCRIPTIONlearn/tutorial An image for the interactive tutorial从仓库中拉取一个镜像,注意要写这个镜像的全名you@tutorial:~$ docker pull learn/tutorialPulling repository learn/tutorial from https://index.docker.io/v1Pulling image 8dbd9e392a964056420e5d58ca5cc376ef18e2de93b5cc90e868a1bbc8318c1c (precise) from ubuntuPulling image b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc (12.10) from ubuntuPulling image 27cf784147099545 () from tutorial启动一个docker并且运行命令you@tutorial:~$ docker run learn/tutorial echo “hello boy”hello boytips:这里是启动了一个容器并且运行了一个命令,当命令运行完的时候容器就停止了。可以通过docker的ps命令查看当前正在运行的容器。you@tutorial:~$ docker psID IMAGE COMMAND CREATED STATUS PORTS安装一个软件pingyou@tutorial:~$ docker run learn/tutorial apt-get install -y pingReading package lists…Building dependency tree…The following NEW packages will be installed: iputils-ping0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.Need to get 56.1 kB of archives.After this operation, 143 kB of additional disk space will be used.Get:1 http://archive.ubuntu.com/ubuntu/ precise/main iputils-ping amd64 3:20101006-1ubuntu1 [56.1 kB]debconf: delaying package configuration, since apt-utils is not installedFetched 56.1 kB in 1s (50.3 kB/s)Selecting previously unselected package iputils-ping.(Reading database … 7545 files and directories currently installed.)Unpacking iputils-ping (from …/iputils-ping_3%3a20101006-1ubuntu1_amd64.deb) …Setting up iputils-ping (3:20101006-1ubuntu1)查看改变之后的容器,然后保存成learn/pingyou@tutorial:~$ docker ps -lID IMAGE COMMAND CREATED STATUS PORTS6982a9948422 ubuntu:12.04 apt-get install ping 1 minute ago Exit 0you@tutorial:~$ docker commit 6982 learn/pingeffb66b31edb使用新的镜像ping googleyou@tutorial:~$ docker run learn/ping ping www.google.comPING www.google.com (74.125.239.129) 56(84) bytes of data.64 bytes from nuq05s02-in-f20.1e100.net (74.125.239.148): icmp_req=1 ttl=55 time=2.23 ms64 bytes from nuq05s02-in-f20.1e100.net (74.125.239.148): icmp_req=2 ttl=55 time=2.30 ms64 bytes from nuq05s02-in-f20.1e100.net (74.125.239.148): icmp_req=3 ttl=55 time=2.27 ms64 bytes from nuq05s02-in-f20.1e100.net (74.125.239.148): icmp_req=4 ttl=55 time=2.30 ms查看正在运行的容器的状态you@tutorial:~$ docker psID IMAGE COMMAND CREATED STATUS PORTSefefdc74a1d5 learn/ping:latest ping www.google.com 37 seconds ago Up 36 secondsyou@tutorial:~$ docker inspect efef[2013/07/30 01:52:26 GET /v1.3/containers/efef/json{ “ID”: “efefdc74a1d5900d7d7a74740e5261c09f5f42b6dae58ded6a1fde1cde7f4ac5”, “Created”: “2013-07-30T00:54:12.417119736Z”, “Path”: “ping”, “Args”: [ “www.google.com” ], “Config”: { “Hostname”: “efefdc74a1d5”, “User”: “”, “Memory”: 0, “MemorySwap”: 0, “CpuShares”: 0, “AttachStdin”: false, “AttachStdout”: true, “AttachStderr”: true, “PortSpecs”: null, “Tty”: false, “OpenStdin”: false, “StdinOnce”: false, “Env”: null, “Cmd”: [ “ping”, “www.google.com” ], “Dns”: null, “Image”: “learn/ping”, “Volumes”: null, “VolumesFrom”: “”, “Entrypoint”: null }, “State”: { “Running”: true, “Pid”: 22249, “ExitCode”: 0, “StartedAt”: “2013-07-30T00:54:12.424817715Z”, “Ghost”: false }, “Image”: “a1dbb48ce764c6651f5af98b46ed052a5f751233d731b645a6c57f91a4cb7158”, “NetworkSettings”: { “IPAddress”: “172.16.42.6”, “IPPrefixLen”: 24, “Gateway”: “172.16.42.1”, “Bridge”: “docker0”, “PortMapping”: { “Tcp”: {}, “Udp”: {} } }, “SysInitPath”: “/usr/bin/docker”, “ResolvConfPath”: “/etc/resolv.conf”, “Volumes”: {}, “VolumesRW”: {}查看本地镜像you@tutorial:~$ docker imagesubuntu latest 8dbd9e392a96 4 months ago 131.5 MB (virtual 131.5 MB)learn/tutorial latest 8dbd9e392a96 2 months ago 131.5 MB (virtual 131.5 MB)learn/ping latest effb66b31edb 10 minutes ago 11.57 MB (virtual 143.1 MB)把镜像推送到云端docker inspect efetips: 这个是推送到docker的云仓库的,会有你自己的独立命名控件,账号注册地址这个十分钟交互式的短教程可以让我们对docker有个感性的认识,最基本的使用和激发兴趣。本文出自 “orangleliu笔记本” 博客,请务必保留此出处http://blog.csdn.net/orangleliu/article/details/38648075


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2024-Mar-04 02:10pm
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