(3).查看容器中进程信息
#命令 docker top 容器ID -------------- [root@Jsxs ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES be003d68204c centos "/bin/sh -c 'while t…" 13 minutes ago Up 13 minutes clever_cannon [root@Jsxs ~]# docker top be003d68204c 用户id 进程id 父进程id UID PID PPID C STIME TTY TIME CMD root 557486 557465 0 19:01 ? 00:00:00 /bin/sh -c while true;do echo xiaofan;sleep 1;done root 558648 557486 0 19:15 ? 00:00:00 /usr/bin/coreutils --coreutils-prog-shebang=sleep /usr/bin/sleep 1
(4).查看容器的元数据
#命令 docker inspect 容器ID ---------------------------------------------------------- [root@Jsxs ~]# docker inspect be003d68204c [ { 显示id的一部分 "Id": "be003d68204c8b3093277632abaa73e74a2e3e9230ae0c64223b1642d1d5eeab", "Created": "2023-03-21T11:01:25.371743833Z", 时间 "Path": "/bin/sh", 路径 "Args": [ "-c", "while true;do echo xiaofan;sleep 1;done" 信息 ], 状态 "State": { "Status": "running", "Running": true, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 11132, "ExitCode": 0, "Error": "", "StartedAt": "2022-05-24T02:33:46.224199282Z", "FinishedAt": "0001-01-01T00:00:00Z" }, "Image": "sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6", "ResolvConfPath": "/var/lib/docker/containers/c55c1a083e2e5e33d6a5577e4ac9d953718f746bcf79841a7b9fa7deb643c5a2/resolv.conf", "HostnamePath": "/var/lib/docker/containers/c55c1a083e2e5e33d6a5577e4ac9d953718f746bcf79841a7b9fa7deb643c5a2/hostname", "HostsPath": "/var/lib/docker/containers/c55c1a083e2e5e33d6a5577e4ac9d953718f746bcf79841a7b9fa7deb643c5a2/hosts", "LogPath": "/var/lib/docker/containers/c55c1a083e2e5e33d6a5577e4ac9d953718f746bcf79841a7b9fa7deb643c5a2/c55c1a083e2e5e33d6a5577e4ac9d953718f746bcf79841a7b9fa7deb643c5a2-json.log", "Name": "/fervent_beaver", "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/overlay2/0c335307a36317a110766faea36b3c7c868ae5ee9b8c27a989edacf3b6892829-init/diff:/var/lib/docker/overlay2/b62e37aaada82eaec082715523ac39af7267a00be9af7f268d0cee3645b702e4/diff", "MergedDir": "/var/lib/docker/overlay2/0c335307a36317a110766faea36b3c7c868ae5ee9b8c27a989edacf3b6892829/merged", "UpperDir": "/var/lib/docker/overlay2/0c335307a36317a110766faea36b3c7c868ae5ee9b8c27a989edacf3b6892829/diff", "WorkDir": "/var/lib/docker/overlay2/0c335307a36317a110766faea36b3c7c868ae5ee9b8c27a989edacf3b6892829/work" }, "Name": "overlay2" }, 挂载 "Mounts": [], "Config": { "Hostname": "c55c1a083e2e", "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 123YX;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" } }, 网络命令 "NetworkSettings": { "Bridge": "", "SandboxID": "9aed795b5d2eb0a3d6b31cd48f29acabf338aa036703b40e063df5af1b564490", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": {}, "SandboxKey": "/var/run/docker/netns/9aed795b5d2e", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "4e0e7bcc423265a62a278215bf9200d8ed34e68a8a82e95b97390915831c6ba4", "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": "8d26d8f19fe79975f51b98bb21730e285b04a26e21cd0b5b4cbc02c01ea370e8", "EndpointID": "4e0e7bcc423265a62a278215bf9200d8ed34e68a8a82e95b97390915831c6ba4", "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 } } } } ]
5.进入当前正在运行的容器
# 我们通常容器都是在后台运行，需要进入容器，修改一些配置 # 命令 docker exec -it 容器id bashshell # 方式一 [root@Jsxs ~]# docker run -d centos /bin/sh -c "while true;do echo xiaofan;sleep 1;done" 45c2bee44852afd81e604ded7314a1477db87956d45956e95518a2b2810bb8b4 [root@Jsxs ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 45c2bee44852 centos "/bin/sh -c 'while t…" 6 seconds ago Up 5 seconds relaxed_greider [root@Jsxs ~]# docker exec -it 45c2bee44852 /bin/bash [root@45c2bee44852 /]# ls bin dev etc home lib lib64 lost+found media mnt opt proc root run sbin srv sys tmp usr var [root@45c2bee44852 /]# ps -ef UID PID PPID C STIME TTY TIME CMD root 1 0 0 11:23 ? 00:00:00 /bin/sh -c while true;do echo xiaofan;sleep 1;done root 46 0 0 11:24 pts/0 00:00:00 /bin/bash root 96 1 0 11:24 ? 00:00:00 /usr/bin/coreutils --coreutils-prog-shebang=sleep /usr/bin/sleep 1 root 97 46 0 11:24 pts/0 00:00:00 ps -ef ------------------------------------------------------ # 方式二 dcoker attach 容器id # 测试 Docker version 20.10.16, build aa7e414 [root@localhost ~]# docker attach c55c1a083e2e 123YX 123YX 123YX 123YX 123YX 正在执行当前的代码... ================================================================== # 区别 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
6.从容器中拷贝文件到主机(光标在主机)
容器之间是互相隔离状态
#命令 docker cp 容器ID:容器内路径 目的主机路径 ---------------------------------------------------------------------- [root@Jsxs ~]# docker ps -a # 查看所有的容器 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES [root@Jsxs ~]# clear [root@Jsxs ~]# docker ps #只查看正在运行的容器 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES [root@Jsxs ~]# docker images # 查看所有的镜像 REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest feb5d9fea6a5 18 months ago 13.3kB centos latest 5d0da3dc9764 18 months ago 231MB [root@Jsxs ~]# docker run -it centos /bin/bash #创建一个新的容器并运行 [root@48fa8f942572 /]# [root@Jsxs ~]# docker ps #查看正在运行的容器 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 48fa8f942572 centos "/bin/bash" 13 seconds ago Up 13 seconds heuristic_cerf [root@Jsxs ~]# cd /home #进入本机home目录 [root@Jsxs home]# ls #查看文件 aaa jsxs liloucun liloucunManger properties redis www [root@Jsxs home]# docker attach 48fa8f942572 #进入正在运行的容器 [root@48fa8f942572 /]# ls bin dev etc home lib lib64 lost+found media mnt opt proc root run sbin srv sys tmp usr var [root@48fa8f942572 /]# cd /home #进入容器的虚拟机中的home目录 [root@48fa8f942572 home]# ls [root@48fa8f942572 home]# touch test.java #在容器的虚拟机中的home目录创建文件 [root@48fa8f942572 home]# exit exit #退出容器，并停止运行。只要不删除容器,数据还在 [root@Jsxs home]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES [root@Jsxs home]# docker cp 48fa8f942572:/homet/test.java /home Error response from daemon: Could not find the file /homet/test.java in container 48fa8f942572 [root@Jsxs home]# docker cp 48fa8f942572:/home/test.java /home #移动 Successfully copied 1.536kB to /home [root@Jsxs home]# ls #查看 aaa jsxs jsxs.java liloucun liloucunManger properties redis test.java www #拷贝是一个手动过程，未来我们使用 -v卷的技术，可以实现自动
7.小结
(1).Docker 常用命令大全
#info|version docker info #显示docker的系统信息，包括镜像和容器的数量 docker version #显示docker的版本信息。 #帮助命令 docker 命令 --help #帮助命令 #镜像命令 docker images #查看所有本地主机上的镜像 可以使用docker image ls代替 docker search #搜索镜像 docker pull #下载镜像 docker image pull docker rmi #删除镜像 docker image rm #容器命令 docker run 镜像id #新建容器并启动 docker ps 列出所有运行的容器 docker container list docker rm 容器id #删除指定容器 #删除所有容器 docker rm -f $(docker ps -aq) #删除所有的容器 docker ps -a -q|xargs docker rm #删除所有的容器 #启动和停止容器 docker start 容器id #启动容器 docker restart 容器id #重启容器 docker stop 容器id #停止当前正在运行的容器 docker kill 容器id #强制停止当前容器 #退出容器 exit #容器直接退出 ctrl +P +Q #容器不停止退出 ---注意：这个很有用的操作 #其他常用命令 docker run -d 镜像名 #后台启动命令 docker logs #查看日志 docker top 容器id #查看容器中进程信息ps docker inspect 容器id #查看镜像的元数据 docker exec -it 容器名 操作命令 #进入当前容器后开启一个新的终端，可以在里面操作。（常用） [root@Jsxs ~]# docker exec -it tomcat-net01 ping 192.168.0.3 docker attach 容器id/name # 进入容器正在执行的终端 docker cp 容器id:容器内路径 主机目的路径 #从容器内拷贝到主机上
