肖德时-深入浅出Docker.pdf

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1、深入浅出Docker肖德时@DataMan-IncDockercontributorInfoQDocker专栏作者xds2000@weibocoderxiao@weixinDocker是什么今天只讲DockerImageSource:www.google.com/images容器的历史RocketVirtuozzoVServerOpenVZLXCLinuxutilssystemdLibcontainer20012005200820092014ParallelsVirtuozzoContainers(睿拓)Linux-VServerOpenVZLXCLinu

2、x-utils(unshare,nsenter)SystemD(systemd-nspawn)Libcontainer(Docker)Rocket(CoreOS)Docker是什么-v1Docker 是Docker.Inc 公司开源的一个基于Linux Kernel Namespace/CGroups技术之上构建的Container容器引擎, 源代码托管在GitHub 上, 基于Go语言开发并遵从Apache2.0协议开源。Docker是什么-v2ImageSource:www.docker.comContainerEngine是什么LXC/Libconta

3、inerLibcontainerprovidesanativeGoimplementationforcreatingcontainerswithnamespaces,cgroups,capabilities,andfilesystemaccesscontrols.Itallowsyoutomanagethelifecycleofthecontainerperformingadditionaloperationsafterthecontaineriscreated.让我们启动一个ContainerLinuxContainersCGroups限制资源-Cpu-Mem

4、ory-Blkio-FreezerNamespaces隔离环境-MNT、PID、NET、IPC、USER、UTS困惑：容器如何启动的exportGOPATH=$GOPATH:/your/path/to/libcontainer/vendorcdlibcontainer/nsinit&&goget&&makemkdir/busyboxcurl-sSL'https://github.com/jpetazzo/docker-busybox/raw/buildroot-2014.11/rootfs.tar'

5、tar-xC/busyboxcplibcontaine

6、r/sample_configs/minimal.json/busybox/container.jsoncd/busyboxnsinitexec--tty--configcontainer.json/bin/bash/var/lib/docker探底aufsgraphrepositories-aufs注意：如果是devicemapper，则是devicemapper目录和repositoriesdevicemapper文件，graph为共用的目录。如果是overlayfs, 则是overlay目录和repositoriesoverlay文件/var/lib

7、/docker探底-Cont.RootFS/var/lib/docker探底-Cont.graph/var/lib/docker探底repositories-*BonusTipsMacDockerSourceBuildtoBundlefolder:-makeBIND_DIR=bundlesbinary-wgethttps://get.docker.io/builds/Linux/x86_64/docker-latest-O$(type-Pdocker)-Dockerfile.simplealiasaliasdip="dockerinspect--format'{

8、{.NetworkSettings.IPAddress}}'"db(){dockerbuild-t="$1".;}aliasdkd="dockerrun-d-P"aliasdki="dockerrun-t-i-P"drm(){dockerrm$(dockerps-q-a);}dri(){dockerrmi$(dockerimages-q);}ddri(){dockerrmi$(dockerimages-f'dangling=true'-q);}rmexit(){sudodockerps-a

9、grepExit

10、cut-d''-f1

11、xargssudo