Docker基础：容器元数据详解

今天给大家介绍Docker容器元数据里面包含内容详解，如有不当之处，欢迎大家指正。

查看容器元数据主要通过docker inspect 容器id进行查看。今天通过docker安装的mysql查看启动的容器。

docker inspect [OPTIONS] NAME|ID [NAME|ID...]

命令选项

使用 inspect 命令可以查看一个容器的具体信息。

docker inspect --format='{{range .NetworkSettings.Networks}}{{.MacAddress}}{{end}}' 572219d3a0ca

[root@ecs-337444 ~]# docker inspect --format='{{range .NetworkSettings.Networks}}{{.MacAddress}}{{end}}' 572219d3a0ca 02:42:ac:11:00:03 2.2 查看MAC地址

docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' 572219d3a0ca

[root@ecs-337444 ~]# docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' 572219d3a0ca 172.17.0.3 2.3 查看容器详细信息

docker inspect 572219d3a0ca

下面把能找到资料的参数解释给大家标注一下。

[ { "Id": "572219d3a0ca25a37623a1113f3c8faa6b48d3ab42ae668eac64fcb39cb4dd84", #完整容器id "Created": "2022-06-08T08:29:58.542781937Z", #容器创建时间 "Path": "docker-entrypoint.sh", #启动容器时，通过shell脚本执行些预处理逻辑中shell脚本的名称 "Args": [ "mysqld" ], "State": { "Status": "running", #容器状态 "Running": true, #是否运行 "Paused": false, #是否暂停 "Restarting": false, #是否重启中 "OOMKilled": false, #进程被*死 "Dead": false, # 已小王 "Pid": 136172, # 容器进程id "ExitCode": 0, # 退出状态码 "Error": "", #错误信息 "StartedAt": "2022-07-16T01:47:33.598196195Z", #开始启动时间 "FinishedAt": "2022-07-16T01:47:26.919749746Z" # 上一次结束时间 }, "Image": "sha256:3218b38490cec8d31976a40b92e09d61377359eab878db49f025e5d464367f3b", #镜像的sha256算法id "ResolvConfPath": "/var/lib/docker/containers/572219d3a0ca25a37623a1113f3c8faa6b48d3ab42ae668eac64fcb39cb4dd84/resolv.conf", # resolv.conf域名系统解析器（DNS Resolver）的配置文件路径 "HostnamePath": "/var/lib/docker/containers/572219d3a0ca25a37623a1113f3c8faa6b48d3ab42ae668eac64fcb39cb4dd84/hostname", #当前容器所在的位置 "HostsPath": "/var/lib/docker/containers/572219d3a0ca25a37623a1113f3c8faa6b48d3ab42ae668eac64fcb39cb4dd84/hosts", #容器host文件（域名、IP配置文件）路径 "LogPath": "/var/lib/docker/containers/572219d3a0ca25a37623a1113f3c8faa6b48d3ab42ae668eac64fcb39cb4dd84/572219d3a0ca25a37623a1113f3c8faa6b48d3ab42ae668eac64fcb39cb4dd84-json.log",#容器运行日志文件路径 "Name": "/mysql9", #镜像名称 "RestartCount": 0, #重启个数 "Driver": "overlay2", #存储驱动，联合文件系统 "Platform": "linux", # 运行平台 "MountLabel": "",#挂载标签 "ProcessLabel": "",#进程标签 "AppArmorProfile": "", #Linux内核中的强制访问控制系统配置文件 "ExecIDs": null, #当前容器正在执行 exec的 ID，多个用数组展示 #主机配置 "HostConfig": { #容器宿主目录绑定 "Binds": [ "/home/mysql8/conf/my.cnf:/etc/mysql/my.cnf", "/home/mysql8/logs:/logs", "/home/mysql8/data:/var/lib/mysql", "/etc/localtime:/etc/localtime" ], "ContainerIDFile": "", #？？？ #日志配置 "LogConfig": { "Type": "json-file", #文件类型 json "Config": {} }, "NetworkMode": "default", #网络模式 #端口绑定信息 "PortBindings": { "3306/tcp": [ { "HostIp": "", "HostPort": "3306" } ] }, #重启策略 "RestartPolicy": { "Name": "unless-stopped",#自动重启类似always "MaximumRetryCount": 0 #最大重试次数 }, "AutoRemove": false, #自动移除 "VolumeDriver": "", "VolumesFrom": null, "CapAdd": null, "CapDrop": null, "CgroupnsMode": "host", "Dns": [], "DnsOptions": [], "DnsSearch": [], "ExtraHosts": null, "GroupAdd": null, "IpcMode": "private", "Cgroup": "", "Links": null, "OomScoreAdj": 0, "PidMode": "", "Privileged": true, "PublishAllPorts": false, "ReadonlyRootfs": false, "SecurityOpt": [ "label=disable" ], "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, "DeviceRequests": null, "KernelMemory": 0, "KernelMemoryTCP": 0, "MemoryReservation": 0, "MemorySwap": 0, "MemorySwappiness": null, "OomKillDisable": false, "PidsLimit": null, "Ulimits": null, "CpuCount": 0, "CpuPercent": 0, "IOMaximumIOps": 0, "IOMaximumBandwidth": 0, "MaskedPaths": null, "ReadonlyPaths": null }, #镜像管理驱动 "GraphDriver": { #联合系统分层信息 "Data": { #镜像层，目录或者文件是只读的 "LowerDir": "/var/lib/docker/overlay2/77f1db351358d953cb1fe55a79e84597d3cbc3844c2dd249a2acdfa15e402627-init/diff:/var/lib/docker/overlay2/b261e67d747a7a769d143f6d4bc9492684b17680256cdf5962f8145acb6b3dab/diff:/var/lib/docker/overlay2/e88c8d60eec4dee423f121636d8b7a560fe2b4739c6c2361d90e290799989120/diff:/var/lib/docker/overlay2/d8f81e30c57461476828fa01d7faad6cc96f893e55684fabf02bf804f76ca2e8/diff:/var/lib/docker/overlay2/b04b2325906657684ef7914d1834a0e510fc7065c78287ce066b0dd5667273c3/diff:/var/lib/docker/overlay2/f09dec6179a52989205fd2931b31996515e06b8048b139f7cc87982df2f497ad/diff:/var/lib/docker/overlay2/c0eab9ee7da29584d4583dd66199346582f1036f69f9989b7da5f8e72f0fa992/diff:/var/lib/docker/overlay2/2a28cd4140717faa03275c600bae785a8a4b0131337bf04267e000f8569aa0f7/diff:/var/lib/docker/overlay2/733a014a49863d79ffb0d86655d8e3b3ceb4a515266e50c09b6cf02d8f81c9c3/diff:/var/lib/docker/overlay2/5da96f62c2672a8590cb920cf541bc3ac636f1aca7babb540d49316c72e7d74a/diff:/var/lib/docker/overlay2/cdf557bd933d8f3809eb2a4b493f376d81e64ee14d0adbd8a74b57d071f63fd6/diff:/var/lib/docker/overlay2/80e0b0ba180d6736e659f56192c214c95d433e59f0aa6d79bfe66d52fb3c7b73/diff:/var/lib/docker/overlay2/4935d32e3ec461a85af88a19fef5872312b4c43a5adf43848b1f3e25353b7ac8/diff", #容器的挂载点 "MergedDir": "/var/lib/docker/overlay2/77f1db351358d953cb1fe55a79e84597d3cbc3844c2dd249a2acdfa15e402627/merged", #读写层，在启动一个容器时候会进行创建，所有的对容器数据更改都发生在这里层，upperdir是可读可写的 "UpperDir": "/var/lib/docker/overlay2/77f1db351358d953cb1fe55a79e84597d3cbc3844c2dd249a2acdfa15e402627/diff", #工作目录 "WorkDir": "/var/lib/docker/overlay2/77f1db351358d953cb1fe55a79e84597d3cbc3844c2dd249a2acdfa15e402627/work" }, "Name": "overlay2" }, #挂载配置 "Mounts": [ { "Type": "bind", #类型 "Source": "/home/mysql8/logs", #来源目录 "Destination": "/logs", #容器目录 "Mode": "", #模式 "RW": true, #读写权限 "Propagation": "rprivate" #挂载目录实时更新模式 shared、slave、private、rshared、rslave、rprivate }, { "Type": "bind", "Source": "/home/mysql8/data", "Destination": "/var/lib/mysql", "Mode": "", "RW": true, "Propagation": "rprivate" }, { "Type": "bind", "Source": "/etc/localtime", "Destination": "/etc/localtime", "Mode": "", "RW": true, "Propagation": "rprivate" }, { "Type": "bind", "Source": "/home/mysql8/conf/my.cnf", "Destination": "/etc/mysql/my.cnf", "Mode": "", "RW": true, "Propagation": "rprivate" } ], "Config": { "Hostname": "572219d3a0ca", #容器缩写id "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, #暴露端口 "ExposedPorts": { "3306/tcp": {}, "33060/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, #环境变量配置 "Env": [ "MYSQL_ROOT_PASSWORD=431557313", "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "GOSU_VERSION=1.12", "MYSQL_MAJOR=8.0", "MYSQL_VERSION=8.0.27-1debian10" ], #设置容器的默认执行的命令，不可以追加命令 "Cmd": [ "mysqld" ], #镜像名 服务名 tag版本 "Image": "mysql:8.0.27", "Volumes": { "/var/lib/mysql": {} }, #工作目录 "WorkingDir": "", #设置容器的默认执行的命令，可以追加命令 "Entrypoint": [ "docker-entrypoint.sh" ], "OnBuild": null,#Dockerfile文件构建 "Labels": {} }, #网络设置 "NetworkSettings": { "Bridge": "", #网桥 #沙箱id "SandboxID": "9d8795184ee28e903bb503b42519d5f56a622977f49e4255e771dfcb1c8bdaf3", "HairpinMode": false, #是否开启发卡模式 "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, #端口配置 "Ports": { "3306/tcp": [ { "HostIp": "0.0.0.0", "HostPort": "3306" }, { "HostIp": "::", #外网访问 "HostPort": "3306" #暴力端口 } ], "33060/tcp": null }, "SandboxKey": "/var/run/docker/netns/9d8795184ee2", #沙盒密钥路径 "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "826898658eec96e305763ce63e6505c4c0e5d152872bf8ae517f73371a8d015e", "Gateway": "172.17.0.1", #网关地址 "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "172.17.0.3", "IPPrefixLen": 16, "IPv6Gateway": "", "MacAddress": "02:42:ac:11:00:03", #MAC地址 "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "376cfaed3501614c09972655643d3d974e434548773d140c0040d9c268294e51", "EndpointID": "826898658eec96e305763ce63e6505c4c0e5d152872bf8ae517f73371a8d015e", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.3", "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:03", "DriverOpts": null } } } } ]