docker 记录
docker 启动容器、进入容器、删除容器等
➜ Downloads docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
19d7ad3d29cb centos "/bin/bash" 14 hours ago Exited (0) 13 hours ago charming_engelbart
# 启动容器
➜ Downloads docker start 19d7ad3d29cb
19d7ad3d29cb
# 进入容器
➜ Downloads docker attach 19d
# 删除容器
➜ Downloads docker rm 0509
Error response from daemon: You cannot remove a running container 0509d2e0e68d29c4b60bf00d7e444cd5f10e000c6db8e0c69e6472b7eb31059c. Stop the container before attempting removal or force remove
# 强制删除容器
➜ Downloads docker rm -f 0509
0509
# 容器导出
big-data docker export -o ./centos_1-19.tar 19d
# 当使用 -P 标记时，Docker 会随机映射一个 49000~49900 的端口到内部容器开放的网络端口。使用 docker ps 可以看到，本地主机的 49155 被映射到了容器的 5000 端口。此时访问本机的 49155 端口即可访问容器内 web 应用提供的界面。
docker run -d -P training/webapp python app.py
docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
bc533791f3f5 training/webapp:latest python app.py 5 seconds ago Up 2 seconds 0.0.0.0:49155->5000/tcp nostalgic_morse
# ip:hostPort:containerPort （映射指定地址的指定端口）指定映射使用一个特定地址，比如 localhost 地址 127.0.0.1
docker run -d -p 127.0.0.1:5000:5000 training/webapp python app.py
# 查看容器信息等
➜ big-data docker container inspect 19d
[
{
"Id": "19d7ad3d29cbeaa490759891fd6b24c3b76f72e2e2ab0b4c99b826e69b7bbd39",
"Created": "2021-01-18T12:30:00.994571758Z",
"Path": "/bin/bash",
"Args": [],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 1693,
"ExitCode": 0,
"Error": "",
"StartedAt": "2021-01-19T02:05:17.487554903Z",
"FinishedAt": "2021-01-18T12:52:17.688931234Z"
},
"Image": "sha256:300e315adb2f96afe5f0b2780b87f28ae95231fe3bdd1e16b9ba606307728f55",
"ResolvConfPath": "/var/lib/docker/containers/19d7ad3d29cbeaa490759891fd6b24c3b76f72e2e2ab0b4c99b826e69b7bbd39/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/19d7ad3d29cbeaa490759891fd6b24c3b76f72e2e2ab0b4c99b826e69b7bbd39/hostname",
"HostsPath": "/var/lib/docker/containers/19d7ad3d29cbeaa490759891fd6b24c3b76f72e2e2ab0b4c99b826e69b7bbd39/hosts",
"LogPath": "/var/lib/docker/containers/19d7ad3d29cbeaa490759891fd6b24c3b76f72e2e2ab0b4c99b826e69b7bbd39/19d7ad3d29cbeaa490759891fd6b24c3b76f72e2e2ab0b4c99b826e69b7bbd39-json.log",
"Name": "/charming_engelbart",
"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,
"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/overlay2/1399c30f19a036d8a981e9c2501b4bfb8f5dc0d4ad17b9f7524aa4e6c4f822e9-init/diff:/var/lib/docker/overlay2/ac2768f1f10cdd6a3a96d526fdba25dd6a50dc8adb9dc9be6e869b2f6d98b726/diff",
"MergedDir": "/var/lib/docker/overlay2/1399c30f19a036d8a981e9c2501b4bfb8f5dc0d4ad17b9f7524aa4e6c4f822e9/merged",
"UpperDir": "/var/lib/docker/overlay2/1399c30f19a036d8a981e9c2501b4bfb8f5dc0d4ad17b9f7524aa4e6c4f822e9/diff",
"WorkDir": "/var/lib/docker/overlay2/1399c30f19a036d8a981e9c2501b4bfb8f5dc0d4ad17b9f7524aa4e6c4f822e9/work"
},
"Name": "overlay2"
},
"Mounts": [],
"Config": {
"Hostname": "19d7ad3d29cb",
"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": "centos",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": {
"org.label-schema.build-date": "20201204",
"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": "4730e0d0e8643e8e546ac952ff06337eb6a5e56960659eeb990e032920adcbaf",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "/var/run/docker/netns/4730e0d0e864",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "65d9cb246361c71aa16c3a4857280110f494fc8d6a68e7dd5a628e83f60c4f19",
"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": "7f0b4f22bbcd47519c542b9b25d362d0c7e882537638dfd0d55a6fc4900e85c3",
"EndpointID": "65d9cb246361c71aa16c3a4857280110f494fc8d6a68e7dd5a628e83f60c4f19",
"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
}
}
}
}
]
# 查看容器内进程
➜ big-data docker top 19d
PID USER TIME COMMAND
1693 root 0:00 /bin/bash
在生产环境中，为了提高容器的高可用性和安全性，一方面要合理使用资源限制参数来管理容器的资源消耗；另一方面要指定合适的容器重启策略，来自动重启退出的容器。
docker run -v参数
格式：-v 本地目录:容器目录 或 -v 容器目录
示例：docker run -it --rm -v $PWD(本地目录):/python(容器目录) python /bin/bash
将本机的当前目录，挂载到镜像中的/python目录
docker run --rm -it -v /home/hyzhou/docker(本地目录):/data(容器目录) ubuntu:14.04 /bin/bash
将本机的/home/hyzhou/docker，挂载到镜像中的/data目录
其他参数：
1. -d: 后台运行容器
1. -p: 端口映射 5005:5004 指定主机的5005端口映射到容器的5004端口
1. -it: 以交互模式运行启动容器
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