# 命令 docker run -d
[root@iZ2ze3j42n65xtmxmtcq34Z /]# docker run -d centos
b7e5f148fae211233155312b946f324c00c83f5a474bf78e3d73c5d094560ef6
[root@iZ2ze3j42n65xtmxmtcq34Z /]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
# 问题docker ps,发现centos停止
# 常见的坑：docker 容器使用后台运行，就必须要有一个前台进程，docker发现没有应用，就会自动停止
#nginx,容器启动后，发现自己没有提供服务，就会立刻停止，就是没有程序了
docker logs -f -t 容器id #查看全部日志
docker logs -f -t -tail 10 容器id #查看10条日志
[root@iZ2ze3j42n65xtmxmtcq34Z ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c996ec16d427 centos "/bin/bash" 15 minutes ago Up 9 minutes exciting_jang
#docker top 容器id
[root@iZ2ze3j42n65xtmxmtcq34Z ~]# docker top c996ec16d427
UID PID PPID C STIME TTY TIME CMD
root 27741 27720 0 23:24 pts/0 00:00:00 /bin/bash
#docker inspect 容器id
#测试
[root@iZ2ze3j42n65xtmxmtcq34Z ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c996ec16d427 centos "/bin/bash" 18 minutes ago Up 12 minutes exciting_jang
[root@iZ2ze3j42n65xtmxmtcq34Z ~]# docker inspect c996ec16d427
[
{
"Id": "c996ec16d427f8f1928aeffca9df8b09367b910aa98e357ea1d1cda804bbc9e9",
"Created": "2021-05-09T15:18:57.309773337Z",
"Path": "/bin/bash",
"Args": [],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 27741,
"ExitCode": 0,
"Error": "",
"StartedAt": "2021-05-09T15:24:12.611502973Z",
"FinishedAt": "2021-05-09T15:19:31.735629177Z"
},
"Image": "sha256:300e315adb2f96afe5f0b2780b87f28ae95231fe3bdd1e16b9ba606307728f55",
"ResolvConfPath": "/var/lib/docker/containers/c996ec16d427f8f1928aeffca9df8b09367b910aa98e357ea1d1cda804bbc9e9/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/c996ec16d427f8f1928aeffca9df8b09367b910aa98e357ea1d1cda804bbc9e9/hostname",
"HostsPath": "/var/lib/docker/containers/c996ec16d427f8f1928aeffca9df8b09367b910aa98e357ea1d1cda804bbc9e9/hosts",
"LogPath": "/var/lib/docker/containers/c996ec16d427f8f1928aeffca9df8b09367b910aa98e357ea1d1cda804bbc9e9/c996ec16d427f8f1928aeffca9df8b09367b910aa98e357ea1d1cda804bbc9e9-json.log",
"Name": "/exciting_jang",
"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": [
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/overlay2/624c15b6ed75c203b6f248fff553be5ad339b97ed4bfbc8302d65b0b0e5f3b4b-init/diff:/var/lib/docker/overlay2/679a34d524fb2a27a1e235027fc3f6426650c881d432b65845c80172c7ae35c1/diff",
"MergedDir": "/var/lib/docker/overlay2/624c15b6ed75c203b6f248fff553be5ad339b97ed4bfbc8302d65b0b0e5f3b4b/merged",
"UpperDir": "/var/lib/docker/overlay2/624c15b6ed75c203b6f248fff553be5ad339b97ed4bfbc8302d65b0b0e5f3b4b/diff",
"WorkDir": "/var/lib/docker/overlay2/624c15b6ed75c203b6f248fff553be5ad339b97ed4bfbc8302d65b0b0e5f3b4b/work"
},
"Name": "overlay2"
},
"Mounts": [],
"Config": {
"Hostname": "c996ec16d427",
"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": "783f44f57c0a7747c50449672b4c1475bdeb73fd6d3344330c1c201ce98bdcfa",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "/var/run/docker/netns/783f44f57c0a",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "41a51210d04e33aee2c9a1ed6c57ff706f254cb6661d134c0df2f330a28ba58f",
"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": "91258f08c52eecbfeb307152ed9a268cce1b7091bfee8f3a7a708524726890f3",
"EndpointID": "41a51210d04e33aee2c9a1ed6c57ff706f254cb6661d134c0df2f330a28ba58f",
"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
}
}
}
}
]
#方式一
# docker exec -it 容器id /bin/bash
[root@iZ2ze3j42n65xtmxmtcq34Z ~]# docker exec -it c996ec16d427 /bin/bash
[root@c996ec16d427 /]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 15:24 pts/0 00:00:00 /bin/bash
root 16 0 0 15:42 pts/1 00:00:00 /bin/bash
root 31 0 4 15:44 pts/2 00:00:00 /bin/bash
root 46 31 0 15:44 pts/2 00:00:00 ps -ef
#方式二
# docker attach 容器id
[root@iZ2ze3j42n65xtmxmtcq34Z ~]# docker attach c996ec16d427
# docker exec -it 容器id /bin/bash #进入容器开启一个新的终端可以在里面操作（常用）
# docker attach 容器id #进入容器正在执行的终端，不会启动新的进程
# docker cp 容器id:容器内路径 目的的主机路径
[root@iZ2ze3j42n65xtmxmtcq34Z home]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c996ec16d427 centos "/bin/bash" 36 minutes ago Up 31 minutes exciting_jang
[root@iZ2ze3j42n65xtmxmtcq34Z home]# docker attach c996ec16d427
[root@c996ec16d427 /]# cd /home
[root@c996ec16d427 home]# ls
[root@c996ec16d427 home]# touch test.java
[root@c996ec16d427 home]# exit
[root@iZ2ze3j42n65xtmxmtcq34Z home]# docker cp c996ec16d427:/home/test.java /home
[root@iZ2ze3j42n65xtmxmtcq34Z home]# ls
redis test.java www
学习参考狂神说java
原文：https://www.cnblogs.com/SunnyBigBoy/p/14749434.html