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09-九、Docker inspect 容器元数据

容器元数据 就是指创建容器时,容器自带的信息

元数据

元数据 (meta data)——"data about data" 描述数据的数据,一般是结构化数据 ( 如存储在数据库里的数据,规定了字段的长度、类型等 )

元数据是指从信息资源中抽取出来的用于说明其特征、内容的结构化的数据(如题名,版本、出版数据、相关说明,包括检索点等),用于组织、描述、检索、保存、管理信息和知识资源

docker inspect

Docker 中可以使用 docker inspect 命令来查看容器的元数据, 它会返回一个 JSON 文件记录着容器的配置和状态信息


docker inspect <container_id>

我们先使用 docker ps -a 命令看一下有哪些容器


[root@localhost ~]# docker ps -a CONTAINER ID ... cf38bec0c26f ... e66458d65564 ... b3b54da0 ... e08201b591cd ...

我们随便挑一个容器 id,比如 e08201b591cd 然后使用 docker inspect 命令看一下它的元数据


[root@localhost ~]# docker inspect e08201b591cd [ { "Id": "e08201b591cdccd198fa32c4eedbda4a9ca6c81ce2c066e885c592aede52a8a6", "Created": "2018-05-30T23:37:48.6125189Z", "Path": "/bin/bash", "Args": [], "State": { "Status": "exited", "Running": false, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 0, "ExitCode": 0, "Error": "", "StartedAt": "2018-05-30T23:37:49.3270577Z", "FinishedAt": "2018-05-30T23:37:51.1694816Z" }, "Image": "sha256:e4422b8da209755dd5a8aa201ba79cef0c465003f46f6313f318a0e306e4fe05", "ResolvConfPath": "/var/lib/docker/containers/e08201b591cdccd198fa32c4eedbda4a9ca6c81ce2c066e885c592aede52a8a6/resolv.conf", "HostnamePath": "/var/lib/docker/containers/e08201b591cdccd198fa32c4eedbda4a9ca6c81ce2c066e885c592aede52a8a6/hostname", "HostsPath": "/var/lib/docker/containers/e08201b591cdccd198fa32c4eedbda4a9ca6c81ce2c066e885c592aede52a8a6/hosts", "LogPath": "/var/lib/docker/containers/e08201b591cdccd198fa32c4eedbda4a9ca6c81ce2c066e885c592aede52a8a6/e08201b591cdccd198fa32c4eedbda4a9ca6c81ce2c066e885c592aede52a8a6-json.log", "Name": "/hopeful_wing", "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": false, "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 }, "GraphDriver": { "Data": { "LowerDir": "/var/lib/docker/overlay2/55a3fbb9340df768968751d5d7ce8079259f10b0d58366fab4cd3479ce2b3dbf-init/diff:/var/lib/docker/overlay2/6c44d4437a85ab8164585a836a9d2f374633d8456ba2817966d934be1d330175/diff:/var/lib/docker/overlay2/87315a6d9aa0ed5a2a7bbe021c2390c0a0de8b929a76790c9082982b374384ef/diff:/var/lib/docker/overlay2/9414cbf7af7e6db83f2c26a1c80dc3f1b1c2dffab7a8d7b47ff5c712cfff90c1/diff:/var/lib/docker/overlay2/4a54ef73e0fccd3c653bb00b6b4a57256c0043ab4c7c0e457cddbd9e3f7cb510/diff:/var/lib/docker/overlay2/a29ae73d46b6b549db1112c0f8fded4d3f70942ea5e8a2aa8afdaaf49fd54c4c/diff", "MergedDir": "/var/lib/docker/overlay2/55a3fbb9340df768968751d5d7ce8079259f10b0d58366fab4cd3479ce2b3dbf/merged", "UpperDir": "/var/lib/docker/overlay2/55a3fbb9340df768968751d5d7ce8079259f10b0d58366fab4cd3479ce2b3dbf/diff", "WorkDir": "/var/lib/docker/overlay2/55a3fbb9340df768968751d5d7ce8079259f10b0d58366fab4cd3479ce2b3dbf/work" }, "Name": "overlay2" }, "Mounts": [], "Config": { "Hostname": "e08201b591cd", "Domainname": "", "User": "", "AttachStdin": true, "AttachStdout": true, "AttachStderr": true, "Tty": true, "OpenStdin": true, "StdinOnce": true, "Env": [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" ], "Cmd": [ "/bin/bash" ], "Image": "ubuntu:17.10", "Volumes": null, "WorkingDir": "", "Entrypoint": null, "OnBuild": null, "Labels": {} }, "NetworkSettings": { "Bridge": "", "SandboxID": "affe418192894e1f2fe0a063cbbb33983b8d874436994629ce7244b54aafd57c", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": {}, "SandboxKey": "/var/run/docker/netns/affe41819289", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "", "Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "", "IPPrefixLen": 0, "IPv6Gateway": "", "MacAddress": "", "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "d63a40b5f304c0db53f0956641b592dd19bf4486ce9ef17e0d7464ca930b4dfa", "EndpointID": "", "Gateway": "", "IPAddress": "", "IPPrefixLen": 0, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "", "DriverOpts": null } } } } ]

数据很长,如果不做统计用途,也没啥大作用,我们这里就不一一解释了

更多 docker inspect 命令使用方法,可以访问 docker inspect 命令

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    标题:09-九、Docker inspect 容器元数据

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