docker教程之从一头雾水到不一头雾水(1)
一、安装docker
1.搜索docker
[root@node3 ~]# yum search docker
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
========================================================================== N/S matched: docker ===========================================================================
cockpit-docker.x86_64 : Cockpit user interface for Docker containers
docker-client.x86_64 : Client side files for Docker
docker-client-latest.x86_64 : Client side files for Docker
docker-common.x86_64 : Common files for docker and docker-latest
docker-distribution.x86_64 : Docker toolset to pack, ship, store, and deliver content
docker-latest-logrotate.x86_64 : cron job to run logrotate on Docker containers
docker-latest-v1.-migrator.x86_64 : Calculates SHA256 checksums for docker layer content
docker-logrotate.x86_64 : cron job to run logrotate on Docker containers
docker-lvm-plugin.x86_64 : Docker volume driver for lvm volumes
docker-python.x86_64 : An API client for docker written in Python
docker-registry.noarch : Registry server for Docker
docker-registry.x86_64 : Registry server for Docker
docker-v1.-migrator.x86_64 : Calculates SHA256 checksums for docker layer content
python-docker-py.noarch : An API client for docker written in Python
python-docker-pycreds.noarch : Python bindings for the docker credentials store API
docker.x86_64 : Automates deployment of containerized applications
docker-devel.x86_64 : A golang registry for global request variables (source libraries)
docker-forward-journald.x86_64 : Forward stdin to journald
docker-latest.x86_64 : Automates deployment of containerized applications
docker-novolume-plugin.x86_64 : Block container starts with local volumes defined
docker-unit-test.x86_64 : Automates deployment of containerized applications - for running unit tests
oci-systemd-hook.x86_64 : OCI systemd hook for docker
oci-umount.x86_64 : OCI umount hook for docker
skopeo.x86_64 : Inspect Docker images and repositories on registries Name and summary matches only, use "search all" for everything.
2.安装docker
[root@node3 ~]# yum install -y docker
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package docker.x86_64 :1.12.-.git88a4867.el7.centos will be installed
--> Processing Dependency: docker-common = :1.12.-.git88a4867.el7.centos for package: :docker-1.12.-.git88a4867.el7.centos.x86_64
....
....
---> Package systemd-libs.x86_64 :-.el7_3. will be an update
---> Package systemd-python.x86_64 :-.el7 will be updated
---> Package systemd-python.x86_64 :-.el7_3. will be an update
---> Package systemd-sysv.x86_64 :-.el7 will be updated
---> Package systemd-sysv.x86_64 :-.el7_3. will be an update
--> Running transaction check
---> Package libgudev1.x86_64 :-.el7 will be updated
---> Package libgudev1.x86_64 :-.el7_3. will be an update
--> Finished Dependency Resolution Dependencies Resolved ==========================================================================================================================================================================
Package Arch Version Repository Size
==========================================================================================================================================================================
Installing:
docker x86_64 :1.12.-.git88a4867.el7.centos extras M
Updating:
selinux-policy-targeted noarch 3.13.-.el7_3. updates 6.4 M
systemd x86_64 -.el7_3. updates 5.2 M
Installing for dependencies:
container-selinux noarch :2.19-2.1.el7 extras k
docker-client x86_64 :1.12.-.git88a4867.el7.centos extras 3.2 M
docker-common x86_64 :1.12.-.git88a4867.el7.centos extras k
oci-register-machine x86_64 :-3.11.gitdd0daef.el7 extras 1.0 M
oci-systemd-hook x86_64 :0.1.-.gite533efa.el7 extras k
skopeo-containers x86_64 :0.1.-.el7 extras 7.8 k
Updating for dependencies:
libgudev1 x86_64 -.el7_3. updates k
libselinux x86_64 2.5-.el7 base k
libselinux-devel x86_64 2.5-.el7 base k
libselinux-python x86_64 2.5-.el7 base k
libselinux-utils x86_64 2.5-.el7 base k
libsemanage x86_64 2.5-5.1.el7_3 updates k
libsemanage-python x86_64 2.5-5.1.el7_3 updates k
libsepol x86_64 2.5-.el7 base k
libsepol-devel x86_64 2.5-.el7 base k
policycoreutils x86_64 2.5-.el7_3 updates k
policycoreutils-python x86_64 2.5-.el7_3 updates k
selinux-policy noarch 3.13.-.el7_3. updates k
setools-libs x86_64 3.3.-1.1.el7 base k
systemd-libs x86_64 -.el7_3. updates k
systemd-python x86_64 -.el7_3. updates k
systemd-sysv x86_64 -.el7_3. updates k Transaction Summary
==========================================================================================================================================================================
Install Package (+ Dependent packages)
Upgrade Packages (+ Dependent packages) Total size: M
Total download size: M
Downloading packages:
Delta RPMs reduced 7.0 M of updates to 3.9 M (% saved)
(/): policycoreutils-python-2.2.-.el7_2.-.el7_3.x86_64.drpm | kB ::
(/): policycoreutils-2.2.-.el7_2.-.el7_3.x86_64.drpm | kB ::
(/): systemd-libs--.el7_219-.el7_3..x86_64.drpm | kB ::
(/): systemd-python--.el7_219-.el7_3..x86_64.drpm | kB ::
(/): container-selinux-2.19-2.1.el7.noarch.rpm | kB ::
(/): docker-client-1.12.-.git88a4867.el7.centos.x86_64.rpm | 3.2 MB ::
(/): docker-common-1.12.-.git88a4867.el7.centos.x86_64.rpm | kB ::
(/): libgudev1--.el7_3..x86_64.rpm | kB ::
(/): libsemanage-2.5-5.1.el7_3.x86_64.rpm | kB ::
(/): libsemanage-python-2.5-5.1.el7_3.x86_64.rpm | kB ::
(/): systemd--.el7_219-.el7_3..x86_64.drpm | 3.0 MB ::
(/): oci-register-machine--3.11.gitdd0daef.el7.x86_64.rpm | 1.0 MB ::
(/): oci-systemd-hook-0.1.-.gite533efa.el7.x86_64.rpm | kB ::
(/): skopeo-containers-0.1.-.el7.x86_64.rpm | 7.8 kB ::
(/): selinux-policy-3.13.-.el7_3..noarch.rpm | kB ::
(/): systemd-sysv--.el7_3..x86_64.rpm | kB ::
(/): selinux-policy-targeted-3.13.-.el7_3..noarch.rpm | 6.4 MB ::
(/): docker-1.12.-.git88a4867.el7.centos.x86_64.rpm | MB ::
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 2.0 MB/s | MB ::
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : libsepol-2.5-.el7.x86_64 /
Updating : libselinux-2.5-.el7.x86_64
....
.... /
Verifying : policycoreutils-python-2.2.-.el7.x86_64 / Installed:
docker.x86_64 :1.12.-.git88a4867.el7.centos Dependency Installed:
container-selinux.noarch :2.19-2.1.el7 docker-client.x86_64 :1.12.-.git88a4867.el7.centos docker-common.x86_64 :1.12.-.git88a4867.el7.centos
oci-register-machine.x86_64 :-3.11.gitdd0daef.el7 oci-systemd-hook.x86_64 :0.1.-.gite533efa.el7 skopeo-containers.x86_64 :0.1.-.el7 Updated:
selinux-policy-targeted.noarch :3.13.-.el7_3. systemd.x86_64 :-.el7_3. Dependency Updated:
libgudev1.x86_64 :-.el7_3. libselinux.x86_64 :2.5-.el7 libselinux-devel.x86_64 :2.5-.el7 libselinux-python.x86_64 :2.5-.el7
libselinux-utils.x86_64 :2.5-.el7 libsemanage.x86_64 :2.5-5.1.el7_3 libsemanage-python.x86_64 :2.5-5.1.el7_3 libsepol.x86_64 :2.5-.el7
libsepol-devel.x86_64 :2.5-.el7 policycoreutils.x86_64 :2.5-.el7_3 policycoreutils-python.x86_64 :2.5-.el7_3 selinux-policy.noarch :3.13.-.el7_3.
setools-libs.x86_64 :3.3.-1.1.el7 systemd-libs.x86_64 :-.el7_3. systemd-python.x86_64 :-.el7_3. systemd-sysv.x86_64 :-.el7_3. Complete!
[root@node3 ~]#
二、启动docker
1.启动命令
[root@node3 ~]# systemctl start docker
2.查看状态
[root@node3 ~]# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
Active: active (running) since Mon -- :: CST; 4s ago
Docs: http://docs.docker.com
Main PID: (dockerd-current)
CGroup: /system.slice/docker.service
├─ /usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdri...
└─ /usr/bin/docker-containerd-current -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --shim docker-containerd-shim --metrics-interval=0... Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.414920983+08:00" level=info msg="Graph migration to content-addressability took 0.00 seconds"
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.415711385+08:00" level=warning msg="mountpoint for pids not found"
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.416487662+08:00" level=info msg="Loading containers: start."
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.429707075+08:00" level=info msg="Firewalld running: false"
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.638641730+08:00" level=info msg="Default bridge (docker0) is assigned with an IP addr...P address"
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.780057349+08:00" level=info msg="Loading containers: done."
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.780334779+08:00" level=info msg="Daemon has completed initialization"
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.780367237+08:00" level=info msg="Docker daemon" commit="88a4867/1.12.6" graphdriver=d...ion=1.12.
Aug :: node3 dockerd-current[]: time="2017-08-14T14:34:05.790544331+08:00" level=info msg="API listen on /var/run/docker.sock"
Aug :: node3 systemd[]: Started Docker Application Container Engine.
Hint: Some lines were ellipsized, use -l to show in full.
[root@node3 ~]#
3.查看版本
[root@node3 ~]# docker -version
Client:
Version: 1.12.
API version: 1.24
Package version: docker-1.12.-.git88a4867.el7.centos.x86_64
Go version: go1.7.4
Git commit: 88a4867/1.12.
Built: Mon Jul ::
OS/Arch: linux/amd64 Server:
Version: 1.12.
API version: 1.24
Package version: docker-1.12.-.git88a4867.el7.centos.x86_64
Go version: go1.7.4
Git commit: 88a4867/1.12.
Built: Mon Jul ::
OS/Arch: linux/amd64
[root@node3 ~]#
4.查看docker信息
[root@node3 ~]# docker info
Containers:
Running:
Paused:
Stopped:
Images:
Server Version: 1.12.
Storage Driver: devicemapper
Pool Name: docker-:--pool
Pool Blocksize: 65.54 kB
Base Device Size: 10.74 GB
Backing Filesystem: xfs
Data file: /dev/loop0
Metadata file: /dev/loop1
Data Space Used: 11.8 MB
Data Space Total: 107.4 GB
Data Space Available: 23.1 GB
Metadata Space Used: 581.6 kB
Metadata Space Total: 2.147 GB
Metadata Space Available: 2.147 GB
Thin Pool Minimum Free Space: 10.74 GB
Udev Sync Supported: true
Deferred Removal Enabled: false
Deferred Deletion Enabled: false
Deferred Deleted Device Count:
Data loop file: /var/lib/docker/devicemapper/devicemapper/data
WARNING: Usage of loopback devices is strongly discouraged for production use. Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.
Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
Library Version: 1.02.-RHEL7 (--)
Logging Driver: journald
Cgroup Driver: systemd
Plugins:
Volume: local
Network: null overlay host bridge
Swarm: inactive
Runtimes: docker-runc runc
Default Runtime: docker-runc
Security Options: seccomp selinux
Kernel Version: 3.10.-.el7.x86_64
Operating System: CentOS Linux (Core)
OSType: linux
Architecture: x86_64
Number of Docker Hooks:
CPUs:
Total Memory: 125.8 GiB
Name: node3
ID: VGL7:LAHR:ETDZ:M7A7:AGJG:HHLV:H4AR:3DY4:3DEA:ZHK4:4DI6:UUZG
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
Insecure Registries:
127.0.0.0/
Registries: docker.io (secure)
[root@node3 ~]#
5.开机自启动
$ sudo chkconfig docker on
三、卸载docker
1.列出已安装的包
$ yum list installed | grep docker
yum list installed | grep docker
docker-engine.x86_64 1.7.-.el7 @/docker-engine-1.7.-.el7.x86_64.rpm
2.删除安装包
$ sudo yum -y remove docker-engine.x86_64
3.删除镜像/容器等
$ rm -rf /var/lib/docker
四、安装docker镜像
1.docker镜像地址
官方：https://hub.docker.com/
国内网易：https://c.163.com/hub#/m/home/
2.安装centos镜像
以官方地址为例，打开网址，首页搜索centos，点击第一个，因为star最多嘛
复制右上角的命令到命令行执行
[root@ichz ~]# docker pull centos
Using default tag: latest
Trying to pull repository docker.io/library/centos ...
latest: Pulling from docker.io/library/centos
7dc0dca2b151: Pull complete
Digest: sha256:b67d21dfe609ddacf404589e04631d90a342921e81c40aeaf3391f6717fa5322
Status: Downloaded newer image for docker.io/centos:latest
[root@ichz ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/centos latest 49f7960eb7e4 days ago MB
好了，centos镜像就安装好了。
参考文章
https://blog.csdn.net/chengyuqiang/article/details/78886986
https://blog.csdn.net/a527219336/article/details/50800181
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