# 后台启动[root@iZbp1d0213clo5fn6z0fsfZ ~]# docker run -d centos# 问题docker ps 发现centos停止了# 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===================================================# 查看日志docker logs -f -t --tail 参数 容器shell脚本执行[root@iZbp1d0213clo5fn6z0fsfZ ~]# docker run -d centos /bin/sh -c "while true;do echo kuangshen;sleep 1;done"a30b41b49db8da66a9ad857215673f295911a3700494f9ee071ab2aabf2b167f===================================================# 查看容器中的进程信息 pstop 命令[root@iZbp1d0213clo5fn6z0fsfZ /]# docker top a30b41b49db8UID PID PPID C STIME TTY TIME CMDroot 3831 3811 0 17:28 ? 00:00:00 /bin/sh -c while true;do echo kuangshen;sleep 1;doneroot 12255 3831 0 17:36 ? 00:00:00 /usr/bin/coreutils --coreutils-prog-shebang=sleep /usr/bin/sleep 1=====================================================# 查看镜像的元数据docker inspect 容器id# 测试[root@iZbp1d0213clo5fn6z0fsfZ /]# docker inspect a30b41b49db8[{"Id": "a30b41b49db8da66a9ad857215673f295911a3700494f9ee071ab2aabf2b167f","Created": "2021-05-31T09:28:42.362870518Z","Path": "/bin/sh","Args": ["-c","while true;do echo kuangshen;sleep 1;done"],"State": {"Status": "running","Running": true,"Paused": false,"Restarting": false,"OOMKilled": false,"Dead": false,"Pid": 3831,"ExitCode": 0,"Error": "","StartedAt": "2021-05-31T09:28:42.735716126Z","FinishedAt": "0001-01-01T00:00:00Z"},"Image": "sha256:300e315adb2f96afe5f0b2780b87f28ae95231fe3bdd1e16b9ba606307728f55","ResolvConfPath": "/var/lib/docker/containers/a30b41b49db8da66a9ad857215673f295911a3700494f9ee071ab2aabf2b167f/resolv.conf","HostnamePath": "/var/lib/docker/containers/a30b41b49db8da66a9ad857215673f295911a3700494f9ee071ab2aabf2b167f/hostname","HostsPath": "/var/lib/docker/containers/a30b41b49db8da66a9ad857215673f295911a3700494f9ee071ab2aabf2b167f/hosts","LogPath": "/var/lib/docker/containers/a30b41b49db8da66a9ad857215673f295911a3700494f9ee071ab2aabf2b167f/a30b41b49db8da66a9ad857215673f295911a3700494f9ee071ab2aabf2b167f-json.log","Name": "/inspiring_tereshkova","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/overlay2/5de0d2cc1e6e6a22a81cf3b0041127def56f864b9819d18c559a20d8f0022368-init/diff:/var/lib/docker/overlay2/ef87897c62cbb295429779784b0a8897873fdaad0d9d125397a2a27a848e655d/diff","MergedDir": "/var/lib/docker/overlay2/5de0d2cc1e6e6a22a81cf3b0041127def56f864b9819d18c559a20d8f0022368/merged","UpperDir": "/var/lib/docker/overlay2/5de0d2cc1e6e6a22a81cf3b0041127def56f864b9819d18c559a20d8f0022368/diff","WorkDir": "/var/lib/docker/overlay2/5de0d2cc1e6e6a22a81cf3b0041127def56f864b9819d18c559a20d8f0022368/work"},"Name": "overlay2"},"Mounts": [],"Config": {"Hostname": "a30b41b49db8","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 kuangshen;sleep 1;done"],"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": "847eee60bdf0ddcce208cd8d1daf9678459306299cae5eb07b2a51163f5cfade","HairpinMode": false,"LinkLocalIPv6Address": "","LinkLocalIPv6PrefixLen": 0,"Ports": {},"SandboxKey": "/var/run/docker/netns/847eee60bdf0","SecondaryIPAddresses": null,"SecondaryIPv6Addresses": null,"EndpointID": "f97266b9f9bb7f202bad65a64f53af715011044a2917c4eebbf6e3e040252058","Gateway": "172.17.0.1","GlobalIPv6Address": "","GlobalIPv6PrefixLen": 0,"IPAddress": "172.17.0.4","IPPrefixLen": 16,"IPv6Gateway": "","MacAddress": "02:42:ac:11:00:04","Networks": {"bridge": {"IPAMConfig": null,"Links": null,"Aliases": null,"NetworkID": "862cbaa102542ddd9fb67c1467cdb88cfdb342fad9cb470385545184aa6b8d84","EndpointID": "f97266b9f9bb7f202bad65a64f53af715011044a2917c4eebbf6e3e040252058","Gateway": "172.17.0.1","IPAddress": "172.17.0.4","IPPrefixLen": 16,"IPv6Gateway": "","GlobalIPv6Address": "","GlobalIPv6PrefixLen": 0,"MacAddress": "02:42:ac:11:00:04","DriverOpts": null}}}}]=================================================# 进入当前正在运行的容器docker exec -it 容器id bashshell #进入容器后开启一个新的终端，可以再里面操作（常用）docker attach -it 容器id bashshell # 进入容器正在执行的终端，不会=================================================从容器内拷贝文件到主机上docker cp 容器id:容器内路径 目的的主机路径[root@iZbp1d0213clo5fn6z0fsfZ /]# docker cp 0855237f240c:/home/test.java /home
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