查看镜像的元数据
docker inspect --help
# 命令
docker inspect 容器id
# 测试
C:\cmder
λ docker inspect 0c7ee03d76dd #
[
{
"Id": "0c7ee03d76ddc6dd4c8caea4a639bcbd191309f1f6794c223bb62958f05e13cc",
"Created": "2022-01-05T13:49:27.0383541Z",
"Path": "/bin/sh",
"Args": [
"-c",
"while true;do echo bruce_liu;sleep 1;done"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 5113,
"ExitCode": 0,
"Error": "",
"StartedAt": "2022-01-05T13:49:27.6480989Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6",
"ResolvConfPath": "/var/lib/docker/containers/0c7ee03d76ddc6dd4c8caea4a639bcbd191309f1f6794c223bb62958f05e13cc/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/0c7ee03d76ddc6dd4c8caea4a639bcbd191309f1f6794c223bb62958f05e13cc/hostname",
"HostsPath": "/var/lib/docker/containers/0c7ee03d76ddc6dd4c8caea4a639bcbd191309f1f6794c223bb62958f05e13cc/hosts",
"LogPath": "/var/lib/docker/containers/0c7ee03d76ddc6dd4c8caea4a639bcbd191309f1f6794c223bb62958f05e13cc/0c7ee03d76ddc6dd4c8caea4a639bcbd191309f1f6794c223bb62958f05e13cc-json.log",
"Name": "/brave_cartwright",
"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,
"CgroupnsMode": "host",
"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": [
30,
120
],
"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/overlay2/24d07c55a599d8b51e7035d22fd8d1825e132552271702bc42c1410417e22a01-init/diff:/var/lib/docker/overlay2/88853f06c6da7ba74b65019d6f86fcff4301dba97631a2cdd7ebe466cbc3cc0f/diff",
"MergedDir": "/var/lib/docker/overlay2/24d07c55a599d8b51e7035d22fd8d1825e132552271702bc42c1410417e22a01/merged",
"UpperDir": "/var/lib/docker/overlay2/24d07c55a599d8b51e7035d22fd8d1825e132552271702bc42c1410417e22a01/diff",
"WorkDir": "/var/lib/docker/overlay2/24d07c55a599d8b51e7035d22fd8d1825e132552271702bc42c1410417e22a01/work"
},
"Name": "overlay2"
},
"Mounts": [],
"Config": {
"Hostname": "0c7ee03d76dd",
"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",
"while true;do echo bruce_liu;sleep 1;done"
],
"Image": "centos",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": {
"org.label-schema.build-date": "20210915",
"org.label-schema.license": "GPLv2",
"org.label-schema.name": "CentOS Base Image",
"org.label-schema.schema-version": "1.0",
"org.label-schema.vendor": "CentOS"
}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "325904a8305da35e3bccb874c66331dceabb2fb0917e0e5f364ec144dac6d891",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
},
"SandboxKey": "/var/run/docker/netns/325904a8305d",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "ca20615b2260f60d00b7a801466257e4cf180d6a9cc51ca5b7fe1a31fb5a0241",
"Gateway": "172.17.0.1",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"MacAddress": "02:42:ac:11:00:02",
"Networks": {
"bridge": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "bc7d4b7e5df6399b894535936e96884d6f4fd226f10bd0118f2d8293f8df5fc6",
"EndpointID": "ca20615b2260f60d00b7a801466257e4cf180d6a9cc51ca5b7fe1a31fb5a0241",
"Gateway": "172.17.0.1",
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:11:00:02",
"DriverOpts": null
}
}
}
}
]
进入当前正在运行的容器
# 我们通常容器都使用后台方式运行的，需要进入容器，修改一些配置
# 命令
docker exec -it 容器id bashShell
C:\cmder
λ docker exec -it 0c7ee03d76dd /bin/bash
[root@0c7ee03d76dd /]# pwd
/
[root@0c7ee03d76dd /]# clear
bash: clear: command not found
[root@0c7ee03d76dd /]# ls
bin dev etc home lib lib64 lost+found media mnt opt proc root run sbin srv sys tmp usr var
# 方式二
docker attach 容器id
docker attach --help
# 测试
C:\cmder
λ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0c7ee03d76dd centos "/bin/sh -c 'while t…" 44 minutes ago Up 44 minutes brave_cartwright
C:\cmder
λ docker attach 0c7ee03d76dd
bruce_liu
bruce_liu
bruce_liu
bruce_liu
正在执行当前的代码......
# docker exec ---------进入容器后开启一个新的终端，可以在里面操作（常用）
# docker attach ---------进入容器正在执行的终端，不会启动新的进程！
从容器内拷贝文件到主机上
docker cp 容器id:容器内路径 目的地主机路径
docker cp 容器id:路径/文件 目的主机路径
# 进入docker容器内部
docker attach 容器id
# 在容器内执行命令 touch test.java
# 然后执行exit, 退出容器
# 将这个文件拷贝出来的到主机上
docker cp 容器id:/test.java c:\
# 拷贝是一个手动过程，未来我们使用 -v 卷的技术，可以实现
学习方式：将所有命令全部敲一遍，自己记录 笔记
小结：
attach Attach to a running container # 当前shell下attach连接指定运行镜像
build Build an image from a Dockerfile # 通过Dockerfile 定制镜像
commit Create a new image from a container changes # 提交当前容器为新的镜像
cp Copy files/folders from the containers filesystem to the host path # 从容器中拷贝指定文件或者目录到宿主机
create Create a new container # 创建一个新的容器， 同run ,但不启动容器
diff Inspect changes on a container's filesystem # 查看docker容器变化
events Get real time events from the server # 从docker服务获取容器实时事件
exec Run a command in an existing container # 在已存在的容器上运行命令
export Stream the contents of a container as a tar archive # 导出容器的内容流作为一个tar，归档文件[对应import]
history Show the history of an image # 展示一个镜像形成历史
images List images # 列出系统当前镜像
import Create a new filesystem image from the contents of a tarball # 从tar包中的内容创建一个新的文件系统映像[对应export]
info Display system-wide information # 显示系统相关信息
inspect Return low-level information on a container # 查看容器详细信息
kill Kill a running container # kill 指定的docker 容器
load Load an image from a tar archive # 从一个tar包中加载一个镜像[对应save]
login Register or Login to the docker registry server # 注册或者登录一个docker源服务器
logout Log out from a Docker registry server # 从当前docker registry退出
logs Fetch the logs of a container # 输出当前容器日志信息
port Lookup the public-facing port which is NAT-ed to PRIVATE_PORT # 查看映射端口对应的容器内部源端口
pause Pause all processs within a container # 暂停容器
ps List containers # 列出容器列表
pull Pull an image or a repository from the docker registry server # 从docker镜像源服务器拉取指定镜像或者镜像库
push Push an image or a repository to the docker registry server # 推送指定镜像或者库镜像至docker 源服务器
restart Restart a running container # 重启运行的容器
rm Remove one or more containers # 移除一个或者多个容器
rmi Remove one or more images # 移除一个或者多个镜像[无容器使用该镜像才可删除，否则删除相关容器才可继续或-f 强制删除]
run Run a command in a new container # 创建一个新的容器并运行一个命令
save Save an image to a tar archive # 保存一个镜像为一个tar包（对应load)
search Search for an image on the Docker Hub # 在docker hub中搜索镜像
start Start a stopped containers # 启动容器
stop Stop a running containers # 停止容器
tag Tag an image into a repository # 给源中镜像打标签
unpause Unpause a paused container # 取消暂停容器
version Show the docker version information # 查看docker版本号
wait Block until a container stops, then print its exit code # 截取容器停止时的退出状态值
