Docker 镜像管理,显示本地镜像,查找镜像,删除镜像,镜像拉取,查看镜像的具体信息,镜像的导入和导出,将配置后的镜像commit成自己的镜像,docker history,等
一、 显示本地镜像:
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest c82521676580 3 weeks ago 109MB
[root@localhost ~]#
二、 镜像查找:
[root@localhost ~]# docker search nginx
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
nginx Official build of Nginx. 9300 [OK]
jwilder/nginx-proxy Automated Nginx reverse proxy for docker con… 1384 [OK]
richarvey/nginx-php-fpm Container running Nginx + PHP-FPM capable of… 610 [OK]
jrcs/letsencrypt-nginx-proxy-companion LetsEncrypt container to use with nginx as p… 394 [OK]
kong Open-source Microservice & API Management la… 215 [OK]
webdevops/php-nginx Nginx with PHP-FPM 111 [OK]
kitematic/hello-world-nginx A light-weight nginx container that demonstr… 108
zabbix/zabbix-web-nginx-mysql Zabbix frontend based on Nginx web-server wi… 62 [OK]
bitnami/nginx Bitnami nginx Docker Image 57 [OK]
1and1internet/ubuntu-16-nginx-php-phpmyadmin-mysql-5 ubuntu-16-nginx-php-phpmyadmin-mysql-5 43 [OK]
linuxserver/nginx An Nginx container, brought to you by LinuxS… 38
tobi312/rpi-nginx NGINX on Raspberry Pi / armhf 20 [OK]
blacklabelops/nginx Dockerized Nginx Reverse Proxy Server. 12 [OK]
nginxdemos/nginx-ingress NGINX Ingress Controller for Kubernetes . Th… 11
wodby/drupal-nginx Nginx for Drupal container image 10 [OK]
webdevops/nginx Nginx container 8 [OK]
nginxdemos/hello NGINX webserver that serves a simple page co… 8 [OK]
centos/nginx-18-centos7 Platform for running nginx 1.8 or building n… 7
1science/nginx Nginx Docker images that include Consul Temp… 4 [OK]
centos/nginx-112-centos7 Platform for running nginx 1.12 or building … 4
pebbletech/nginx-proxy nginx-proxy sets up a container running ngin… 2 [OK]
travix/nginx NGinx reverse proxy 1 [OK]
toccoag/openshift-nginx Nginx reverse proxy for Nice running on same… 1 [OK]
ansibleplaybookbundle/nginx-apb An APB to deploy NGINX 0 [OK]
mailu/nginx Mailu nginx frontend 0 [OK]
[root@localhost ~]#
三、 镜像删除:
Docker rmi image id (当容器存在的时候删不掉,应该先删除镜像再删除容器)
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
cf05d1459d71 nginx "nginx -g 'daemon of…" 9 hours ago Up 9 hours 0.0.0.0:32768->80/tcp serene_boyd
[root@localhost ~]# docker stop cf05d1459d71
cf05d1459d71
[root@localhost ~]# docker rm cf05d1459d71
cf05d1459d71
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest c82521676580 3 weeks ago 109MB
[root@localhost ~]# docker rmi c82521676580
Untagged: nginx:latest
Untagged: nginx@sha256:4ffd9758ea9ea360fd87d0cee7a2d1cf9dba630bb57ca36b3108dcd3708dc189
Deleted: sha256:c82521676580c4850bb8f0d72e47390a50d60c8ffe44d623ce57be521bca9869
Deleted: sha256:2c1f65d17acf8759019a5eb86cc20fb8f8a7e84d2b541b795c1579c4f202a458
Deleted: sha256:8f222b457ca67d7e68c3a8101d6509ab89d1aad6d399bf5b3c93494bbf876407
Deleted: sha256:cdb3f9544e4c61d45da1ea44f7d92386639a052c620d1550376f22f5b46981af
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
[root@localhost ~]#
四、 镜像拉取和推送
Docker pull 即可
五、 查看镜像的具体信息:
[root@test mnt]# docker inspect f3c5dcc79825 ##可以看到相关具体配置,和镜像分层。
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e1cfa12a7593 nginx "nginx -g 'daemon of…" About a minute ago Up About a minute 0.0.0.0:32769->80/tcp sharp_jepsen
[root@localhost ~]# docker inspect e1cfa12a7593
[{"Id": "e1cfa12a7593e43e539b4b06b96fffe81a672126344691ed8a27699b36e395ac","Created": "2018-08-18T13:13:09.592242655Z","Path": "nginx","Args": ["-g","daemon off;"],"State": {"Status": "running","Running": true,"Paused": false,"Restarting": false,"OOMKilled": false,"Dead": false,"Pid": 41600,"ExitCode": 0,"Error": "","StartedAt": "2018-08-18T13:13:09.890319999Z","FinishedAt": "0001-01-01T00:00:00Z"},"Image": "sha256:c82521676580c4850bb8f0d72e47390a50d60c8ffe44d623ce57be521bca9869","ResolvConfPath": "/var/lib/docker/containers/e1cfa12a7593e43e539b4b06b96fffe81a672126344691ed8a27699b36e395ac/resolv.conf","HostnamePath": "/var/lib/docker/containers/e1cfa12a7593e43e539b4b06b96fffe81a672126344691ed8a27699b36e395ac/hostname","HostsPath": "/var/lib/docker/containers/e1cfa12a7593e43e539b4b06b96fffe81a672126344691ed8a27699b36e395ac/hosts","LogPath": "/var/lib/docker/containers/e1cfa12a7593e43e539b4b06b96fffe81a672126344691ed8a27699b36e395ac/e1cfa12a7593e43e539b4b06b96fffe81a672126344691ed8a27699b36e395ac-json.log","Name": "/sharp_jepsen","RestartCount": 0,"Driver": "overlay2","Platform": "linux","MountLabel": "","ProcessLabel": "","AppArmorProfile": "","ExecIDs": null,"HostConfig": {"Binds": null,"ContainerIDFile": "","LogConfig": {"Type": "json-file","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": "shareable","Cgroup": "","Links": null,"OomScoreAdj": 0,"PidMode": "","Privileged": false,"PublishAllPorts": true,"ReadonlyRootfs": false,"SecurityOpt": null,"UTSMode": "","UsernsMode": "","ShmSize": 67108864,"Runtime": "runc","ConsoleSize": [0,0],"Isolation": "","CpuShares": 0,"Memory": 0,"NanoCpus": 0,"CgroupParent": "","BlkioWeight": 0,"BlkioWeightDevice": [],"BlkioDeviceReadBps": null,"BlkioDeviceWriteBps": null,"BlkioDeviceReadIOps": null,"BlkioDeviceWriteIOps": null,"CpuPeriod": 0,"CpuQuota": 0,"CpuRealtimePeriod": 0,"CpuRealtimeRuntime": 0,"CpusetCpus": "","CpusetMems": "","Devices": [],"DeviceCgroupRules": null,"DiskQuota": 0,"KernelMemory": 0,"MemoryReservation": 0,"MemorySwap": 0,"MemorySwappiness": null,"OomKillDisable": false,"PidsLimit": 0,"Ulimits": null,"CpuCount": 0,"CpuPercent": 0,"IOMaximumIOps": 0,"IOMaximumBandwidth": 0,"MaskedPaths": ["/proc/acpi","/proc/kcore","/proc/keys","/proc/latency_stats","/proc/timer_list","/proc/timer_stats","/proc/sched_debug","/proc/scsi","/sys/firmware"],"ReadonlyPaths": ["/proc/asound","/proc/bus","/proc/fs","/proc/irq","/proc/sys","/proc/sysrq-trigger"]},"GraphDriver": {"Data": {"LowerDir": "/var/lib/docker/overlay2/90ede5148ae500a2ee42503f51af05e55ea2ff94f26cb5a107e20c2ad2202eb7-init/diff:/var/lib/docker/overlay2/4516eac9778ec4fe0587bda00a24b83a02bbe1511239659b787d6e493b679ca2/diff:/var/lib/docker/overlay2/476ea1f5c87e512f0730756f803fd8a4f7c987d993727410735db154a2191514/diff:/var/lib/docker/overlay2/7d34ec852a0643fca9a0999a218f142558b3ce7736587bccbc8a0d6063791ccb/diff","MergedDir": "/var/lib/docker/overlay2/90ede5148ae500a2ee42503f51af05e55ea2ff94f26cb5a107e20c2ad2202eb7/merged","UpperDir": "/var/lib/docker/overlay2/90ede5148ae500a2ee42503f51af05e55ea2ff94f26cb5a107e20c2ad2202eb7/diff","WorkDir": "/var/lib/docker/overlay2/90ede5148ae500a2ee42503f51af05e55ea2ff94f26cb5a107e20c2ad2202eb7/work"},"Name": "overlay2"},"Mounts": [],"Config": {"Hostname": "e1cfa12a7593","Domainname": "","User": "","AttachStdin": false,"AttachStdout": false,"AttachStderr": false,"ExposedPorts": {"80/tcp": {}},"Tty": true,"OpenStdin": true,"StdinOnce": false,"Env": ["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin","NGINX_VERSION=1.15.2-1~stretch","NJS_VERSION=1.15.2.0.2.2-1~stretch"],"Cmd": ["nginx","-g","daemon off;"],"ArgsEscaped": true,"Image": "nginx","Volumes": null,"WorkingDir": "","Entrypoint": null,"OnBuild": null,"Labels": {"maintainer": "NGINX Docker Maintainers <docker-maint@nginx.com>"},"StopSignal": "SIGTERM"},"NetworkSettings": {"Bridge": "","SandboxID": "16293dc84e08e6aed7360690919cab9912ffed115a1d2a932aace37e3c123721","HairpinMode": false,"LinkLocalIPv6Address": "","LinkLocalIPv6PrefixLen": 0,"Ports": {"80/tcp": [{"HostIp": "0.0.0.0","HostPort": "32769"}]},"SandboxKey": "/var/run/docker/netns/16293dc84e08","SecondaryIPAddresses": null,"SecondaryIPv6Addresses": null,"EndpointID": "01430c1e53c278d140e6e51e37ee9d1d0ad232059e808b55071e363828563e71","Gateway": "172.17.0.1","GlobalIPv6Address": "","GlobalIPv6PrefixLen": 0,"IPAddress": "172.17.0.2","IPPrefixLen": 16,"IPv6Gateway": "","MacAddress": "02:42:ac:11:00:02","Networks": {"bridge": {"IPAMConfig": null,"Links": null,"Aliases": null,"NetworkID": "c893f56aef621becaecce35f131cd25e660183a001f19a435e9004ec9a2df15f","EndpointID": "01430c1e53c278d140e6e51e37ee9d1d0ad232059e808b55071e363828563e71","Gateway": "172.17.0.1","IPAddress": "172.17.0.2","IPPrefixLen": 16,"IPv6Gateway": "","GlobalIPv6Address": "","GlobalIPv6PrefixLen": 0,"MacAddress": "02:42:ac:11:00:02","DriverOpts": null}}}}
]
[root@localhost ~]#
六、 运行一个容器:
[root@localhost ~]# docker run -dit -P nginx
Unable to find image 'nginx:latest' locally
latest: Pulling from library/nginx
be8881be8156: Pull complete
32d9726baeef: Pull complete
87e5e6f71297: Pull complete
Digest: sha256:d85914d547a6c92faa39ce7058bd7529baacab7e0cd4255442b04577c4d1f424
Status: Downloaded newer image for nginx:latest
e1cfa12a7593e43e539b4b06b96fffe81a672126344691ed8a27699b36e395ac
[root@localhost ~]#
–name ##容器名称
–link ##连接某个镜像
–port ##端口映射
–volum ##持久化存储
七、 镜像的导入导出:
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e1cfa12a7593 nginx "nginx -g 'daemon of…" 3 minutes ago Up 2 minutes 0.0.0.0:32769->80/tcp sharp_jepsen
#将上面镜像名称为nginx的镜像保存到mynginx.tar这个包中
[root@localhost ~]# docker save -o mynginx.tar e1cfa12a7593
Error response from daemon: No such image: e1cfa12a7593
[root@localhost ~]# docker save -o mynginx.tar nginx
[root@localhost ~]# ll
-rw------- 1 root root 112703488 8月 18 21:19 mynginx.tar
[root@localhost ~]# ls | grep myngi
mynginx.tar
[root@localhost ~]#
发现上面已经有了一个mynginx.tar的包
复制到另一台机器上导入(接下来是机器192.168.106.110机器,上面是109机器):
[root@localhost ~]# pwd
/root
[root@localhost ~]# ll
-rw-r--r-- 1 root root 112703488 8月 18 21:31 mynginx.tar
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
[root@localhost ~]# docker load < mynginx.tar
cdb3f9544e4c: Loading layer [==================================================>] 58.44MB/58.44MB
a8c4aeeaa045: Loading layer [==================================================>] 54.24MB/54.24MB
08d25fa0442e: Loading layer [==================================================>] 3.584kB/3.584kB
Loaded image: nginx:latest
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest c82521676580 3 weeks ago 109MB
[root@localhost ~]#
通过上面我们可以看到开始docker images中没有镜像列表,在导入之后发现多了一个镜像
八、 创建一个已经存在的镜像ID然后用commit提交:
1、 启动一个镜像,然后创建一个叫toto的文件,然后退出:
[root@localhost ~]# docker run -itd centos /bin/bash
Unable to find image 'centos:latest' locally
latest: Pulling from library/centos
256b176beaff: Pull complete
Digest: sha256:5d91c5535c41fd1bb48d40581a2c8b53d38fc2eb26df774556b53c5a0bd4d44e
Status: Downloaded newer image for centos:latest
dfd1c30384f1fe8250a9516b4b204e553c8eb23b22beec6823a99721a8eeadd3
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
dfd1c30384f1 centos "/bin/bash" 8 seconds ago Up 8 seconds ecstatic_booth
e1cfa12a7593 nginx "nginx -g 'daemon of…" 22 minutes ago Up 22 minutes 0.0.0.0:32769->80/tcp sharp_jepsen
[root@localhost ~]# docker attach dfd1c30384f1
[root@dfd1c30384f1 /]# echo "toto" > tuzuoquan.txt
[root@dfd1c30384f1 /]# ll
total 16
-rw-r--r-- 1 root root 12005 Aug 4 22:05 anaconda-post.log
lrwxrwxrwx 1 root root 7 Aug 4 22:04 bin -> usr/bin
drwxr-xr-x 5 root root 360 Aug 18 13:35 dev
drwxr-xr-x 1 root root 66 Aug 18 13:35 etc
drwxr-xr-x 2 root root 6 Apr 11 04:59 home
lrwxrwxrwx 1 root root 7 Aug 4 22:04 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Aug 4 22:04 lib64 -> usr/lib64
drwxr-xr-x 2 root root 6 Apr 11 04:59 media
drwxr-xr-x 2 root root 6 Apr 11 04:59 mnt
drwxr-xr-x 2 root root 6 Apr 11 04:59 opt
dr-xr-xr-x 151 root root 0 Aug 18 13:35 proc
dr-xr-x--- 2 root root 114 Aug 4 22:05 root
drwxr-xr-x 10 root root 130 Aug 4 22:05 run
lrwxrwxrwx 1 root root 8 Aug 4 22:04 sbin -> usr/sbin
drwxr-xr-x 2 root root 6 Apr 11 04:59 srv
dr-xr-xr-x 13 root root 0 Apr 11 04:59 sys
drwxrwxrwt 7 root root 132 Aug 4 22:05 tmp
-rw-r--r-- 1 root root 5 Aug 18 13:36 tuzuoquan.txt
drwxr-xr-x 13 root root 155 Aug 4 22:04 usr
drwxr-xr-x 18 root root 238 Aug 4 22:04 var
[root@dfd1c30384f1 /]# exit
exit
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
dfd1c30384f1 centos "/bin/bash" About a minute ago Exited (0) 4 seconds ago ecstatic_booth
e1cfa12a7593 nginx "nginx -g 'daemon of…" 24 minutes ago Up 24 minutes 0.0.0.0:32769->80/tcp sharp_jepsen
[root@localhost ~]#
2、 用commit 提交相关镜像生成一个新镜像:
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
dfd1c30384f1 centos "/bin/bash" About a minute ago Exited (0) 4 seconds ago ecstatic_booth
e1cfa12a7593 nginx "nginx -g 'daemon of…" 24 minutes ago Up 24 minutes 0.0.0.0:32769->80/tcp sharp_jepsen
[root@localhost ~]# docker commit -m "Add tuzuoquan.txt" -a "toto-txt" dfd1c30384f1 toto
sha256:232eab347b5b848ef4484b47e912515b53b5f75af4d3ae507a0af6e42f10a46d
-m:表示备注信息
-a:作者相关信息。
dfd1c30384f1:就是刚刚我们创建的容器ID
toto: 表示生成的镜像名称:
3、然后生成了这个镜像。
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
toto latest 232eab347b5b About a minute ago 200MB
centos latest 5182e96772bf 11 days ago 200MB
nginx latest c82521676580 3 weeks ago 109MB
[root@localhost ~]#
4、我们可以查看 那个文件内容是否是toto呢:
[root@localhost ~]# docker run toto cat tuzuoquan.txt
toto
[root@localhost ~]#
当然我们不推荐这种方式,应该使用Dockerfile来操作的。后面才讲。
我们之前认证过,镜像由于是基于unfs联合文件系统,所以镜像是一个leyer的层级来存储的。在刚刚上面的镜像当中,我们给镜像添加了一个Add tuzuoquan.txt的文件层,我们来验证一下:
1、我们可以看到分别有一下三层layer构成了当前的toto镜像。
[root@localhost ~]# docker history toto
IMAGE CREATED CREATED BY SIZE COMMENT
232eab347b5b About an hour ago /bin/bash 41B Add tuzuoquan.txt
5182e96772bf 11 days ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0B
<missing> 11 days ago /bin/sh -c #(nop) LABEL org.label-schema.sc… 0B
<missing> 11 days ago /bin/sh -c #(nop) ADD file:6340c690b08865d7e… 200MB
[root@localhost ~]#
3、 查看本地文件一探究竟:
[root@localhost ~]# cd /var/lib/docker/
[root@localhost docker]# ll
total 8
drwx------. 20 root root 4096 Mar 12 17:11 containers ##容器运行相关信息
drwx------. 5 root root 50 Dec 17 22:59 devicemapper ##存储对应的存储池和相关的元数据
drwx------. 3 root root 25 Dec 17 22:52 image ##各层相关信息
drwxr-x---. 3 root root 18 Dec 17 22:52 network
drwx------ 4 root root 30 Feb 21 14:26 plugins
drwx------. 2 root root 6 Dec 19 11:54 swarm
drwx------. 5 root root 96 Mar 12 16:57 tmp
drwx------. 2 root root 6 Dec 17 22:52 trust
drwx------. 15 root root 4096 Mar 3 00:45 volumes ##数据卷相关信息
4、 我们也可以查看相关信息:
[root@localhost docker]# docker inspect toto
[{"Id": "sha256:232eab347b5b848ef4484b47e912515b53b5f75af4d3ae507a0af6e42f10a46d","RepoTags": ["toto:latest"],"RepoDigests": [],"Parent": "sha256:5182e96772bf11f4b912658e265dfe0db8bd314475443b6434ea708784192892","Comment": "Add tuzuoquan.txt","Created": "2018-08-18T13:38:10.311466855Z","Container": "dfd1c30384f1fe8250a9516b4b204e553c8eb23b22beec6823a99721a8eeadd3","ContainerConfig": {"Hostname": "dfd1c30384f1","Domainname": "","User": "","AttachStdin": false,"AttachStdout": false,"AttachStderr": false,"Tty": true,"OpenStdin": true,"StdinOnce": false,"Env": ["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd": ["/bin/bash"],"Image": "centos","Volumes": null,"WorkingDir": "","Entrypoint": null,"OnBuild": null,"Labels": {"org.label-schema.build-date": "20180804","org.label-schema.license": "GPLv2","org.label-schema.name": "CentOS Base Image","org.label-schema.schema-version": "1.0","org.label-schema.vendor": "CentOS"}},"DockerVersion": "18.06.0-ce","Author": "toto-txt","Config": {"Hostname": "dfd1c30384f1","Domainname": "","User": "","AttachStdin": false,"AttachStdout": false,"AttachStderr": false,"Tty": true,"OpenStdin": true,"StdinOnce": false,"Env": ["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd": ["/bin/bash"],"Image": "centos","Volumes": null,"WorkingDir": "","Entrypoint": null,"OnBuild": null,"Labels": {"org.label-schema.build-date": "20180804","org.label-schema.license": "GPLv2","org.label-schema.name": "CentOS Base Image","org.label-schema.schema-version": "1.0","org.label-schema.vendor": "CentOS"}},"Architecture": "amd64","Os": "linux","Size": 199723865,"VirtualSize": 199723865,"GraphDriver": {"Data": {"LowerDir": "/var/lib/docker/overlay2/3836d6c8daf0ca0f48d2df7d7ed03d4403f2c604ab7466195228010f14c32016/diff","MergedDir": "/var/lib/docker/overlay2/0ad86a1a99ea0e96430a0300febe1eb0cc81854fdeb9200c9f71a63a86fcfe68/merged","UpperDir": "/var/lib/docker/overlay2/0ad86a1a99ea0e96430a0300febe1eb0cc81854fdeb9200c9f71a63a86fcfe68/diff","WorkDir": "/var/lib/docker/overlay2/0ad86a1a99ea0e96430a0300febe1eb0cc81854fdeb9200c9f71a63a86fcfe68/work"},"Name": "overlay2"},"RootFS": {"Type": "layers","Layers": ["sha256:1d31b5806ba40b5f67bde96f18a181668348934a44c9253b420d5f04cfb4e37a","sha256:a06503759f77739def82abb57fd6183881e7f475660d1238c100dad18e46f7f7"]},"Metadata": {"LastTagTime": "2018-08-18T21:38:10.33240725+08:00"}}
]
[root@localhost docker]#
我们通过层级ID可以看到rootfs的相关信息
Docker 镜像管理,显示本地镜像,查找镜像,删除镜像,镜像拉取,查看镜像的具体信息,镜像的导入和导出,将配置后的镜像commit成自己的镜像,docker history,等相关推荐
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