如果你还想从头学起 Docker，可以看看这个系列的文章哦！
https://www.cnblogs.com/poloyy/category/1870863.html
作用
获取容器/镜像的元数据（JSON格式）
语法格式
docker inspect [OPTIONS] NAME|ID [NAME|ID...]
options 说明
| option | 说明 |
| -f | 指定返回值的模板文件 |
| -s | 如果类型为容器，则显示文件总大小 |
| --type | 返回指定类型的JSON |
重点
-f 的使用场景更有实用性
实际栗子
获取容器 IP
docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $CONTAINER_
简单版本
docker inspect tomcat7 | grep IPAddress
就是内容会多了点，但有输出关键信息就行
获取容器 MAC 地址
docker inspect --format='{{range .NetworkSettings.Networks}}{{.MacAddress}}{{end}}' $CONTAINER
简单版本
docker inspect tomcat7 | grep MacAddress
万物皆可 grep 哈哈哈
获取容器日志路径
docker inspect --format='{{.LogPath}}' $CONTAINER_ID
获取容器的镜像名
root@PL-TEST:~# docker inspect -f "{{.Config.Image}}" p100_syslog
registry.cn-shenzhen.com/image/syslog:1.0
获取容器目录挂载信息
docker inspect --format="{{json .Mounts}}" container
可以看到这种输出结果不太友好
美化输出结果
#使用python的json模块美化 docker inspect --format="{{json .Mounts}}" container | python -m json.tool #使用jq美化 docker inspect --format="{{json .Mounts}}" container | jq
获取容器网络信息
#查看完整网络信息 docker inspect --format="{{json .NetworkSettings}}" container | jq #查看网络端口映射 docker inspect --format="{{json .NetworkSettings.Ports}}" container | jq # 查看容器的网络ip、网关等信息 docker inspect --format="{{json .NetworkSettings.Networks}}" container | jq
获取容器特定端口的映射信息
docker inspect --format='{{(index (index .NetworkSettings.Ports "8787/tcp") 0).HostPort}}' $INSTANCE_ID
到时候改 8787 这个端口就行
获取容器的元数据
docker inspect tomcat7
结果
[ { "Id": "453d5e85856052a33f25954ea491648d4f465b073a0b13257734271534ce25ee", "Created": "2020-11-16T15:04:21.46225831Z", "Path": "catalina.sh", "Args": [ "run" ], "State": { "Status": "running", "Running": true, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 8151, "ExitCode": 0, "Error": "", "StartedAt": "2020-11-16T16:52:39.762574155Z", "FinishedAt": "2020-11-16T16:32:59.955468647Z" }, "Image": "sha256:d0f27b446f0a9cf5638da4c45bfdb9a6e0abb5b5f2b168a59c1242ec31934b39", "ResolvConfPath": "/var/lib/docker/containers/453d5e85856052a33f25954ea491648d4f465b073a0b13257734271534ce25ee/resolv.conf", "HostnamePath": "/var/lib/docker/containers/453d5e85856052a33f25954ea491648d4f465b073a0b13257734271534ce25ee/hostname", "HostsPath": "/var/lib/docker/containers/453d5e85856052a33f25954ea491648d4f465b073a0b13257734271534ce25ee/hosts", "LogPath": "/var/lib/docker/containers/453d5e85856052a33f25954ea491648d4f465b073a0b13257734271534ce25ee/453d5e85856052a33f25954ea491648d4f465b073a0b13257734271534ce25ee-json.log", "Name": "/tomcat7", "RestartCount": 0, "Driver": "overlay2", "Platform": "linux", "MountLabel": "", "ProcessLabel": "", "AppArmorProfile": "", "ExecIDs": null, "HostConfig": { "Binds": [ "/usr/local/tomcat/webapps:/usr/local/tomcat/webapps" ], "ContainerIDFile": "", "LogConfig": { "Type": "json-file", "Config": {} }, "NetworkMode": "default", "PortBindings": { "8080/tcp": [ { "HostIp": "", "HostPort": "9999" } ] }, "RestartPolicy": { "Name": "no", "MaximumRetryCount": 0 }, "AutoRemove": false, "VolumeDriver": "", "VolumesFrom": null, "CapAdd": null, "CapDrop": null, "Capabilities": null, "Dns": [], "DnsOptions": [], "DnsSearch": [], "ExtraHosts": null, "GroupAdd": null, "IpcMode": "private", "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, "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": [ "/proc/asound", "/proc/acpi", "/proc/kcore", "/proc/keys", "/proc/latency_stats", "/proc/timer_list", "/proc/timer_stats", "/proc/sched_debug", "/proc/scsi", "/sys/firmware" ], "ReadonlyPaths": [ "/proc/bus", "/proc/fs", "/proc/irq", "/proc/sys", "/proc/sysrq-trigger" ] }, "GraphDriver": { "Data": { "LowerDir": "/var/lib/docker/overlay2/f55d301001836d0bca303385ecf6981356823dab220a0f05cbf4101d0c4b6410-init/diff:/var/lib/docker/overlay2/42ba885fce62f2962b45c326cce2c29b1fd8e114fe549df69fef65b37ab230fa/diff:/var/lib/docker/overlay2/b94481ba0b495bb249e06173dee0e218c13f3e65f7fe23fd5b782c79bd30fe4e/diff:/var/lib/docker/overlay2/177d76f6dd0dca23e1ec9befe03326cbe23fa21a3efa4cfaa74c7f8792198a06/diff:/var/lib/docker/overlay2/651d96c0ee26ee6a5b4206eb812d0c5ba698f1deddfb97f7b943b1a6593b0528/diff:/var/lib/docker/overlay2/5a61caef4107e0883a82e23984c68b00e81c0ce59b603b75cfd9f6a21ca14a18/diff:/var/lib/docker/overlay2/e2dc6737c4504743ab26d2a8e25bae2eaf698493d61d1aff2b723cbff152af81/diff:/var/lib/docker/overlay2/fdca5f4d98e7a1c7a4e3ec17f64b311872fe3cbed6714b819631fea68834b5b8/diff:/var/lib/docker/overlay2/c235b69a918380eccb2202487e8b1581f8af7396ff23bf29bf512e049a10b251/diff:/var/lib/docker/overlay2/6dc73398e20a27e7aa90545d1098152f6e817c5e9cdf79a8c1b647aa86a51e0c/diff:/var/lib/docker/overlay2/140b83aec0bf703150319d5d27ba7192a3f3496486a1baac37809c656d802733/diff", "MergedDir": "/var/lib/docker/overlay2/f55d301001836d0bca303385ecf6981356823dab220a0f05cbf4101d0c4b6410/merged", "UpperDir": "/var/lib/docker/overlay2/f55d301001836d0bca303385ecf6981356823dab220a0f05cbf4101d0c4b6410/diff", "WorkDir": "/var/lib/docker/overlay2/f55d301001836d0bca303385ecf6981356823dab220a0f05cbf4101d0c4b6410/work" }, "Name": "overlay2" }, "Mounts": [ { "Type": "bind", "Source": "/usr/local/tomcat/webapps", "Destination": "/usr/local/tomcat/webapps", "Mode": "", "RW": true, "Propagation": "rprivate" } ], "Config": { "Hostname": "453d5e858560", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": { "8080/tcp": {} }, "Tty": false, "OpenStdin": true, "StdinOnce": false, "Env": [ "PATH=/usr/local/tomcat/bin:/usr/local/openjdk-8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "LANG=C.UTF-8", "JAVA_HOME=/usr/local/openjdk-8", "JAVA_VERSION=8u265", "CATALINA_HOME=/usr/local/tomcat", "TOMCAT_NATIVE_LIBDIR=/usr/local/tomcat/native-jni-lib", "LD_LIBRARY_PATH=/usr/local/tomcat/native-jni-lib", "GPG_KEYS=05AB33110949707C93A279E3D3EFE6B686867BA6 07E48665A34DCAFAE522E5E6266191C37C037D42 47309207D818FFD8DCD3F83F1931D684307A10A5 541FBE7D8F78B25E055DDEE13C370389288584E7 61B832AC2F1C5A90F0F9B00A1C506407564C17A3 713DA88BE50911535FE716F5208B0AB1D63011C7 79F7026C690BAA50B92CD8B66A3AD3F4F22C4FED 9BA44C2621385CB966EBA586F72C284D731FABEE A27677289986DB50844682F8ACB77FC2E86E29AC A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 DCFD35E0BF8CA7344752DE8B6FB21E8933C60243 F3A04C595DB5B6A5F1ECA43E3B7BBB100D811BBE F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23", "TOMCAT_MAJOR=7", "TOMCAT_VERSION=7.0.106", "TOMCAT_SHA512=f1fb2f3db9e66e66df120b058c216e72ec30df90abd80feda49773fa35c3c00cb56e4d264803696e1a71591d5cb60fcabf60f37e1774d549642ebe3eb902622d" ], "Cmd": [ "catalina.sh", "run" ], "Image": "tomcat:7", "Volumes": null, "WorkingDir": "/usr/local/tomcat", "Entrypoint": null, "OnBuild": null, "Labels": {} }, "NetworkSettings": { "Bridge": "", "SandboxID": "42de54c029f2455fb86407ac397fa491a01819106c267c2ae8ca84c8f7955686", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": { "8080/tcp": [ { "HostIp": "0.0.0.0", "HostPort": "9999" } ] }, "SandboxKey": "/var/run/docker/netns/42de54c029f2", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "86302746bf794210a2d24b869c6a1175586124de8b3128c98e33150411f213c1", "Gateway": "172.17.0.1", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "172.17.0.3", "IPPrefixLen": 16, "IPv6Gateway": "", "MacAddress": "02:42:ac:11:00:03", "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "b6f97cbdc0ef2e334507c79e4e5aa99703e6bfc6735b199fc34e47d3725de3ee", "EndpointID": "86302746bf794210a2d24b869c6a1175586124de8b3128c98e33150411f213c1", "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 } } } } ]
