关于docker:Docker-学习

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命令:

inspect:

​ 查看容器配置信息等 

# 上面命令会输入一个 pretty json 外面都是 container 的信息
$ docker inspect <container name/container id>

​ 查看具体某一个配置 

# key1 belong to value0 of key0 and key2 belong to value1 of key1 and so on
$ docker inspect -f='{{.<key0>[.<key1>][.key2][...]}}' <container name/container id>
# or 
$ docker inspect --format='{{.<key0>[.<key1>][.key2][...]}}' <container name/container id>
# example: 
#     docker inspect -f='{{.NetworkSettings}}' nginx                   
# output: 
#     {{0f3f569dce91a16751c170f91ef9c8c128c757f86dff4e39f8ab58ae686f4edb false  0 map[80/tcp:[{0.0.0.0 9002} {:: 9002}]] /var/run/docker/netns/0f3f569dce91 [] []} {553e63fa029a7dc7e123c74b330830033fdcc2a409baae5745e3875d17d6d580 172.17.0.1  0 172.17.0.3 16  02:42:ac:11:00:03} map[bridge:0xc0003f0000]}

​ 格式化输入，上门的 -f 参数输入的数据格式，都是 value, 尽管排序是按程序的，然而咱们不晓得 value 具体对应那个 key.

# 上面命令输入的是 json 格局的数据
$ docker inspect -f '{{json .NetworkSettings.Networks}}' nginx 
# 留神：# 正确示例：# docker inspect -f '{{json .NetworkSettings.Networks}}' nginx  -- √
# docker inspect -f='{{json .NetworkSettings.Networks}}' nginx  -- √
# docker inspect --format='{{json .NetworkSettings.Networks}}' nginx -- √ 
# docker inspect --format '{{json .NetworkSettings.Networks}}' nginx -- √ 
# 下面四个都是相等的，然而不要写成上面的
# 谬误示例:
# docker inspect -f 'json {{.NetworkSettings.Networks}}' nginx -- ×

# Output Example:         {"Bridge":"","SandboxID":"0f3f569dce91a16751c170f91ef9c8c128c757f86dff4e39f8ab58ae686f4edb","HairpinMode":false,"LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"Ports":{"80/tcp":[{"HostIp":"0.0.0.0","HostPort":"9002"},{"HostIp":"::","HostPort":"9002"}]},"SandboxKey":"/var/run/docker/netns/0f3f569dce91","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null,"EndpointID":"553e63fa029a7dc7e123c74b330830033fdcc2a409baae5745e3875d17d6d580","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":"c8af3e9943e0555af10ad6436ec37906039780a897e6ed0c0eb1655c0847f65e","EndpointID":"553e63fa029a7dc7e123c74b330830033fdcc2a409baae5745e3875d17d6d580","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}}}

​ 下面尽管输入了 JSON 格局, 然而挤在一起太乱了，要输入 pretty 的 JSON.

# 应用 jq 命令行格式化 json
$ docker inspect -f '{{json .NetworkSettings.Networks}}' nginx | jq
# or
$ docker inspect -f '{{json .NetworkSettings.Networks}}' nginx | python -m json.tool

留神：python 命令行工具可能显示 'json' is a package and cannot be directly executed，这样的话先执行上面命令。

$PS> python -c "import json"

Refs:

  • Docker 格式化命令和日志输入
  • How do I check whether a module is installed in Python, and install it if needed?

docker-desktop-data:

​ docker 创立的容器寄存在这里，这个如同是 Windows 零碎中，应用了 WSL 才会呈现的，实质其实就是一个 零碎虚拟机，只是比拟非凡。

Refs:

  • what is docker-desktop-data — Stack Overflow
  • Introducing the Docker Desktop WSL 2 Backend

Windows:

WSL:

​ win + e 关上 explorer(资源管理器)——> 在 explorer(资源管理器) 的地址栏输出 \\wsl$\docker-desktop-data 关上 docker-desktop-data.

Containers:

​ 在下面说了 docker-desktop-data 是 docker 寄存 containers 的虚拟机，一些 containers 的配置也是寄存在这里的。

docker-desktop 19.03.13-beta2 开始 containers 的配置都放在这上面 

\\wsl$\docker-desktop-data\version-pack-data\community\docker\containers\

在之前的版本所在的门路是 

\\wsl$\docker-desktop-data\mnt\wsl\docker-desktop-data\data\docker

Refs:

  • docker containers config.v2.json — Stack Overflow

Other:

Refs:

  • Modify Docker container startup configuration parameters
  • How do I assign a port mapping to an existing Docker container?
  • 批改 Docker 容器启动配置参数
  • 如何批改 docker 容器的启动参数
  • Docker 教程 — 小菠萝测试笔记
  • 追加 docker 已运行容器增加或批改端口映射办法 
[
    {
        "Id": "a380c63c4d7e66d30f5a5d21b969e8957a347a7001c808d63e83ef21e477b88b",
        "Created": "2021-06-01T10:05:04.654748Z",
        "Path": "/docker-entrypoint.sh",
        "Args": [
            "nginx",
            "-g",
            "daemon off;"
        ],
        "State": {
            "Status": "exited",
            "Running": false,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 0,
            "ExitCode": 255,
            "Error": "","StartedAt":"2021-06-05T03:30:07.0556693Z","FinishedAt":"2021-06-07T01:01:19.9231296Z"},"Image":"sha256:d1a364dc548d5357f0da3268c888e1971bbdb957ee3f028fe7194f1d61c6fdee","ResolvConfPath":"/var/lib/docker/containers/a380c63c4d7e66d30f5a5d21b969e8957a347a7001c808d63e83ef21e477b88b/resolv.conf","HostnamePath":"/var/lib/docker/containers/a380c63c4d7e66d30f5a5d21b969e8957a347a7001c808d63e83ef21e477b88b/hostname","HostsPath":"/var/lib/docker/containers/a380c63c4d7e66d30f5a5d21b969e8957a347a7001c808d63e83ef21e477b88b/hosts","LogPath":"/var/lib/docker/containers/a380c63c4d7e66d30f5a5d21b969e8957a347a7001c808d63e83ef21e477b88b/a380c63c4d7e66d30f5a5d21b969e8957a347a7001c808d63e83ef21e477b88b-json.log","Name":"/nginx","RestartCount": 0,"Driver":"overlay2","Platform":"linux","MountLabel":"",
        "ProcessLabel": "","AppArmorProfile":"",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": [
                // 例如 F:\\test\\projects
                "< 理论目录的绝对路径 >:/home/www"
            ],
            "ContainerIDFile": "","LogConfig": {"Type":"json-file","Config": {}
            },
            "NetworkMode": "default",
            "PortBindings": {
                "80/tcp": [
                    {"HostIp": "","HostPort":"9002"}
                ]
            },
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "","VolumesFrom": null,"CapAdd": null,"CapDrop": null,"CgroupnsMode":"host","Dns": [],"DnsOptions": [],"DnsSearch": [],"ExtraHosts": null,"GroupAdd": null,"IpcMode":"private","Cgroup":"",
            "Links": ["/php-fpm:/nginx/php-fpm"],
            "OomScoreAdj": 0,
            "PidMode": "","Privileged": false,"PublishAllPorts": false,"ReadonlyRootfs": false,"SecurityOpt": null,"UTSMode":"",
            "UsernsMode": "","ShmSize": 67108864,"Runtime":"runc","ConsoleSize": [
                26,
                119
            ],
            "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/overlay2/1beca78f1781901ac8d59dfc5aa90369db80d35087fc99fb2eeac34a68336098-init/diff:/var/lib/docker/overlay2/9891c32733210d1d3dabfc7e5a6e39da3e72b8b6a37d44a2b5ac3625965fb1cf/diff:/var/lib/docker/overlay2/12bd6576abf47717d1aa00f5e589a668f333a6212aa2f6f468b74d64254d9095/diff:/var/lib/docker/overlay2/fc917caf25c117a3c384baa71c5d71d60e1e95456f0cd3494370422c18dbceec/diff:/var/lib/docker/overlay2/051e1353b7545564b93c7830bfaa72e8a9dc1c43aaf5d49b1181502219cda043/diff:/var/lib/docker/overlay2/61299a683b86efab5625f6a4d3cee81ba4e8536063ada2529e46a267c27fd998/diff:/var/lib/docker/overlay2/91a8a75c4949ccd29cda9ab7844c255b4765537d9f6e967ca119f9dd3a95fa79/diff",
                "MergedDir": "/var/lib/docker/overlay2/1beca78f1781901ac8d59dfc5aa90369db80d35087fc99fb2eeac34a68336098/merged",
                "UpperDir": "/var/lib/docker/overlay2/1beca78f1781901ac8d59dfc5aa90369db80d35087fc99fb2eeac34a68336098/diff",
                "WorkDir": "/var/lib/docker/overlay2/1beca78f1781901ac8d59dfc5aa90369db80d35087fc99fb2eeac34a68336098/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [
            {
                "Type": "bind",
                // 例如 F:\\test\\projects
                "Source": "< 实例目录的绝对路径 >",
                "Destination": "/home/www",
                "Mode": "","RW": true,"Propagation":"rprivate"
            }
        ],
        "Config": {
            "Hostname": "a380c63c4d7e",
            "Domainname": "","User":"",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {"80/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "NGINX_VERSION=1.21.0",
                "NJS_VERSION=0.5.3",
                "PKG_RELEASE=1~buster"
            ],
            "Cmd": [
                "nginx",
                "-g",
                "daemon off;"
            ],
            "Image": "nginx",
            "Volumes": null,
            "WorkingDir": "","Entrypoint": ["/docker-entrypoint.sh"],"OnBuild": null,"Labels": {"maintainer":"NGINX Docker Maintainers \u003cdocker-maint@nginx.com\u003e"},"StopSignal":"SIGQUIT"},"NetworkSettings": {"Bridge":"",
            "SandboxID": "0f3f569dce91a16751c170f91ef9c8c128c757f86dff4e39f8ab58ae686f4edb",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "","LinkLocalIPv6PrefixLen": 0,"Ports": {"80/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "9002"
                    },
                    {
                        "HostIp": "::",
                        "HostPort": "9002"
                    }
                ]
            },
            "SandboxKey": "/var/run/docker/netns/0f3f569dce91",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "553e63fa029a7dc7e123c74b330830033fdcc2a409baae5745e3875d17d6d580",
            "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": "c8af3e9943e0555af10ad6436ec37906039780a897e6ed0c0eb1655c0847f65e",
                    "EndpointID": "553e63fa029a7dc7e123c74b330830033fdcc2a409baae5745e3875d17d6d580",
                    "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
                }
            }
        }
    }
]

正文完
docker
发表至： docker
2021-06-08
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