删除docker镜像&镜像综合管理
查看docker镜像
先查看本机有哪些镜像，然后去删除对应的镜像。
查看本地镜像命令：docker images
[root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE redis latest 02c7f2054405 2 days ago 105MB nginx latest 822b7ec2aaf2 2 days ago 133MB ubuntu latest fb52e22af1b0 5 days ago 72.8MB nginx <none> 08b152afcfae 6 weeks ago 133MB centos latest 300e315adb2f 9 months ago 209MB
查看具体镜像命令：docker images contos
[root@localhost ~]# docker images centos REPOSITORY TAG IMAGE ID CREATED SIZE centos latest 300e315adb2f 9 months ago 209MB
docker images nginx
[root@localhost ~]# docker images nginx REPOSITORY TAG IMAGE ID CREATED SIZE nginx latest 822b7ec2aaf2 2 days ago 133MB nginx <none> 08b152afcfae 6 weeks ago 133MB
搜索dockerhub的镜像命令：docker search 镜像名
删除镜像
下载hello-world镜像
docker pull hello-world
docker images 查看本地镜像
root@localhost ~]# docker pull hello-world Using default tag: latest latest: Pulling from library/hello-world b8dfde127a29: Pull complete Digest: sha256:7d91b69e04a9029b99f3585aaaccae2baa80bcf318f4a5d2165a9898cd2dc0a1 Status: Downloaded newer image for hello-world:latest docker.io/library/hello-world:latest [root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE redis latest 02c7f2054405 2 days ago 105MB nginx latest 822b7ec2aaf2 2 days ago 133MB ubuntu latest fb52e22af1b0 5 days ago 72.8MB nginx <none> 08b152afcfae 6 weeks ago 133MB hello-world latest d1165f221234 6 months ago 13.3kB centos latest 300e315adb2f 9 months ago 209MB
docker是分层存储，镜像是没有自己的内核，运行该镜像时在最顶层生成可写层，在可写层跑应用程序，依赖于当前宿主机的内核运行，因此镜像可大可小。
删除镜像
根据容器名：docker rmi hello-word
根据容器id：docker rmi d1165f221234 # id也可以只用Id前三位：docker rmi d11
[root@localhost ~]# docker images hello-world # 查看容器信息 REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest d1165f221234 6 months ago 13.3kB [root@localhost ~]# docker rmi hello-world # 根据容器名删除,失败提升有依赖 Error response from daemon: conflict: unable to remove repository reference "hello-world" (must force) - container c4be46bffa0d is using its referenced image d1165f221234 [root@localhost ~]# docker ps -a #查看运行过的所有容器 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c4be46bffa0d hello-world "/hello" About a minute ago Exited (0) About a minute ago lucid_davinci afbb311d96fa nginx "/docker-entrypoint.…" 2 hours ago Created infallible_mendel 97213a4c348b ubuntu "bash" 3 hours ago Exited (130) 3 hours ago infallible_hamilton 0ced7b15918e 300e315adb2f "bash" 4 hours ago Exited (0) 3 hours ago recursing_goldstine 3bfef5025609 nginx "/docker-entrypoint.…" 4 hours ago Up 4 hours 0.0.0.0:80->80/tcp, :::80->80/tcp keen_wing d33ab4d13298 nginx "/docker-entrypoint.…" 20 hours ago Exited (0) 19 hours ago relaxed_stonebraker c57196538b20 08b152afcfae "/docker-entrypoint.…" 6 weeks ago Exited (0) 6 weeks ago heuristic_elbakyan
查看hello-word容器别ID=c4be46bffa0d依赖，需要先删除这个依赖。
删除：docker rm c4be46bffa0d
然后再执行：docker rmi hello-world
[root@localhost ~]# docker rmi hello-world Untagged: hello-world:latest Untagged: hello-world@sha256:7d91b69e04a9029b99f3585aaaccae2baa80bcf318f4a5d2165a9898cd2dc0a1 Deleted: sha256:d1165f2212346b2bab48cb01c1e39ee8ad1be46b87873d9ca7a4e434980a7726 Deleted: sha256:f22b99068db93900abe17f7f5e09ec775c2826ecfe9db961fea68293744144bd
镜像综合管理
批量删除镜像（慎用）
docker rmi `docker images -aq`
批量删除容器
docker rm `docker ps -aq`
导出镜像
例如：默认的运行的centos镜像，不提供vim功能，运行该容器后，在容器内安装vim，然后提交该镜像，导出镜像为压缩文件，可以发给其他人用
例如：导出cnetos
命令：docker image save centos > /opt/centos.taz # >后面导出后保存的名字和路径
[root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE redis latest 02c7f2054405 2 days ago 105MB nginx latest 822b7ec2aaf2 2 days ago 133MB ubuntu latest fb52e22af1b0 5 days ago 72.8MB nginx <none> 08b152afcfae 6 weeks ago 133MB centos latest 300e315adb2f 9 months ago 209MB [root@localhost ~]# docker image save centos > /opt/centos.taz [root@localhost ~]# ls /opt/ -lh total 207M -rw-r--r-- 1 root root 207M Sep 5 22:28 centos.taz drwx--x--x 4 root root 28 Jul 24 07:02 containerd [root@localhost ~]#
导入镜像
批量删除依赖：docker rm `docker ps -aq`
[root@localhost ~]# docker rm `docker ps -aq` b9a5d55b7c37 d8f383a83be2 63316c0f8eea afbb311d96fa 97213a4c348b 0ced7b15918e d33ab4d13298 c57196538b20
先删除centos
[root@localhost ~]# docker rmi 300e315adb2f Untagged: centos:latest Untagged: centos@sha256:5528e8b1b1719d34604c87e11dcd1c0a20bedf46e83b5632cdeac91b8c04efc1 Deleted: sha256:300e315adb2f96afe5f0b2780b87f28ae95231fe3bdd1e16b9ba606307728f55 Deleted: sha256:2653d992f4ef2bfd27f94db643815aa567240c37732cae1405ad1c1309ee9859
导入命令：docker image load -i /opt/centos.taz # -i 后面是路径和文件名
[root@localhost ~]# docker image load -i /opt/centos.taz 2653d992f4ef: Loading layer [==================================================>] 216.5MB/216.5MB Loaded image: centos:latest [root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE redis latest 02c7f2054405 2 days ago 105MB nginx latest 822b7ec2aaf2 2 days ago 133MB ubuntu latest fb52e22af1b0 5 days ago 72.8MB nginx <none> 08b152afcfae 6 weeks ago 133MB centos latest 300e315adb2f 9 months ago 209MB
查看镜像详细详细
查看docker服务信息：docker images
[root@localhost ~]# docker info Client: Context: default Debug Mode: false Plugins: app: Docker App (Docker Inc., v0.9.1-beta3) buildx: Build with BuildKit (Docker Inc., v0.5.1-docker) scan: Docker Scan (Docker Inc., v0.8.0) Server: Containers: 1 Running: 1 Paused: 0 Stopped: 0 Images: 5 Server Version: 20.10.6 Storage Driver: overlay2 Backing Filesystem: xfs Supports d_type: true Native Overlay Diff: true userxattr: false Logging Driver: json-file Cgroup Driver: cgroupfs Cgroup Version: 1 Plugins: Volume: local Network: bridge host ipvlan macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc Default Runtime: runc Init Binary: docker-init containerd version: 7eba5930496d9bbe375fdf71603e610ad737d2b2 runc version: v1.0.0-0-g84113ee init version: de40ad0 Security Options: seccomp Profile: default Kernel Version: 3.10.0-1160.el7.x86_64 Operating System: CentOS Linux 7 (Core) OSType: linux Architecture: x86_64 CPUs: 1 Total Memory: 3.682GiB Name: localhost.localdomain ID: NZ2I:JHCL:QBPJ:LWSM:ZNF5:UCIH:7NKG:LROY:YPEU:2ACZ:W7IF:AN3H Docker Root Dir: /var/lib/docker Debug Mode: false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Registry Mirrors: https://8xpk5wnt.mirror.aliyuncs.com/ Live Restore Enabled: false
查看镜像详细详细
docker image inspect 镜像id 获取 镜像id前3位
查看：id=300e315adb2f 的centos镜像详细详细
命令：docker image inspect 300
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest 02c7f2054405 2 days ago 105MB
nginx latest 822b7ec2aaf2 2 days ago 133MB
ubuntu latest fb52e22af1b0 5 days ago 72.8MB
nginx <none> 08b152afcfae 6 weeks ago 133MB
centos latest 300e315adb2f 9 months ago 209MB
[root@localhost ~]# docker image inspect 300 [ { "Id": "sha256:300e315adb2f96afe5f0b2780b87f28ae95231fe3bdd1e16b9ba606307728f55", "RepoTags": [ "centos:latest" ], "RepoDigests": [], "Parent": "", "Comment": "", "Created": "2020-12-08T00:22:53.076477777Z", "Container": "395e0bfa7301f73bc994efe15099ea56b8836c608dd32614ac5ae279976d33e4", "ContainerConfig": { "Hostname": "395e0bfa7301", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" ], "Cmd": [ "/bin/sh", "-c", "#(nop) ", "CMD [\"/bin/bash\"]" ], "Image": "sha256:6de05bdfbf9a9d403458d10de9e088b6d93d971dd5d48d18b4b6758f4554f451", "Volumes": null, "WorkingDir": "", "Entrypoint": null, "OnBuild": null, "Labels": { "org.label-schema.build-date": "20201204", "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": "19.03.12", "Author": "", "Config": { "Hostname": "", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" ], "Cmd": [ "/bin/bash" ], "Image": "sha256:6de05bdfbf9a9d403458d10de9e088b6d93d971dd5d48d18b4b6758f4554f451", "Volumes": null, "WorkingDir": "", "Entrypoint": null, "OnBuild": null, "Labels": { "org.label-schema.build-date": "20201204", "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": 209348104, "VirtualSize": 209348104, "GraphDriver": { "Data": { "MergedDir": "/var/lib/docker/overlay2/feca59a0b79fb06342e35b6087d2c864f228621c2b6dc9692274bb264468ac0f/merged", "UpperDir": "/var/lib/docker/overlay2/feca59a0b79fb06342e35b6087d2c864f228621c2b6dc9692274bb264468ac0f/diff", "WorkDir": "/var/lib/docker/overlay2/feca59a0b79fb06342e35b6087d2c864f228621c2b6dc9692274bb264468ac0f/work" }, "Name": "overlay2" }, "RootFS": { "Type": "layers", "Layers": [ "sha256:2653d992f4ef2bfd27f94db643815aa567240c37732cae1405ad1c1309ee9859" ] }, "Metadata": { "LastTagTime": "0001-01-01T00:00:00Z" } } ]
