一篇文章讓你搞清楚docker常用命令
更新時(shí)間：2022年11月13日 23:47:21 作者：甜點(diǎn)cc
這篇文章主要介紹了一篇文章讓你搞清楚docker常用命令的相關(guān)資料,需要的朋友可以參考下
眾所周知，docker 排查問題相較而言是困難的。因此，熟知一些常用命令對(duì)我們快速的排查定位問題是非常有幫助的。下面讓我們一起來學(xué)習(xí)一下吧??
1、顯示docker的系統(tǒng)信息
docker info
[root@xiao docker]# docker info Client: Context: default Debug Mode: false Plugins: app: Docker App (Docker Inc., v0.9.1-beta3) buildx: Build with BuildKit (Docker Inc., v0.6.1-docker) scan: Docker Scan (Docker Inc.) Server: Containers: 8 Running: 5 Paused: 0 Stopped: 3 Images: 16 Server Version: 20.10.8 Storage Driver: overlay2 Backing Filesystem: extfs Supports d_type: true Native Overlay Diff: true userxattr: false Logging Driver: json-file Cgroup Driver: cgroupfs Cgroup Version: 1 Plugins: Volume: local Network: bridge host ipvlan macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc Default Runtime: runc Init Binary: docker-init containerd version: e25210fe30a0a703442421b0f60afac609f950a3 runc version: v1.0.1-0-g4144b63 init version: de40ad0 Security Options: seccomp Profile: default Kernel Version: 3.10.0-1062.1.2.el7.x86_64 Operating System: CentOS Linux 7 (Core) OSType: linux Architecture: x86_64 CPUs: 1 Total Memory: 1.795GiB Name: xiao ID: SR3Y:RSZT:2ZAE:M33P:O2LT:55KN:A3XY:WE7V:QXJY:7Z32:M34L:NX7N Docker Root Dir: /var/lib/docker Debug Mode: false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Registry Mirrors: https://4h8ex9ed.mirror.aliyuncs.com/ Live Restore Enabled: false [root@xiao docker]#
docker version #顯示docker的版本信息 docker info #顯示docker的系統(tǒng)信息，包括鏡像和容器的數(shù)量 docker --help
文檔地址： https://docs.docker.com/reference/
port # 查看映射端口對(duì)應(yīng)的容器內(nèi)部源端口 pause # 暫停容器 ps # 容器列表 pull # 從docker鏡像源服務(wù)器拉取指定鏡像或者庫鏡像 push # 推送指定鏡像或者庫鏡像至docker源服務(wù)器 restart # 重啟運(yùn)行的容器 rm # 移除一個(gè)或多個(gè)容器 rmi # 移除一個(gè)或多個(gè)鏡像 （無容器使用該鏡像才可刪除，否則需要?jiǎng)h除相關(guān)容器才可繼續(xù)或 -f 強(qiáng)制刪除） run # 創(chuàng)建一個(gè)新的容器并運(yùn)行一個(gè)命令 save # 保存一個(gè)鏡像為一個(gè) tar 包【對(duì)應(yīng) load】 search # 在 docker hub 中搜索鏡像 start # 啟動(dòng)容器 stop # 停止容器 tag # 給源中鏡像打標(biāo)簽 top # 查看容器中運(yùn)行的進(jìn)程信息 unpause # 取消暫停容器 version # 查看 docker版本號(hào) wait # 截取容器停止時(shí)的退出狀態(tài)值 attach # Attach to a running container #當(dāng)前shell下attach連接指定運(yùn)行鏡像 build # Build an image from a Dockerfile #通過Dockerfile定制鏡像 commit # Create a new image from a containers changes #提交當(dāng)前容器為新的鏡像 cp # Copy files/folders from a container to a HOSTDIR or to STDOUT #從容器中拷貝指定文件或者目錄到宿主機(jī)中 create # Create a new container #創(chuàng)建一個(gè)新的容器，同run 但不啟動(dòng)容器 diff # Inspect changes on a containers filesystem #查看docker容器變化 events # Get real time events from the server#從docker服務(wù)獲取容器實(shí)時(shí)事件 exec # Run a command in a running container#在已存在的容器上運(yùn)行命令 export # Export a containers filesystem as a tar archive #導(dǎo)出容器的內(nèi)容流作為一個(gè)tar歸檔文件(對(duì)應(yīng)import) history # Show the history of an image #展示一個(gè)鏡像形成歷史 inspect # 查看容器詳細(xì)信息 kill # kill 指定的容器
2、鏡像命令
docker images
docker images REPOSITORY TAG IMAGE ID CREATED SIZE jenkins/jenkins latest ba8a0e5dc5cb 4 months ago 570MB nginx latest d1a364dc548d 4 months ago 133MB portainer/portainer latest 580c0e4e98b0 6 months ago 79.1MB hello-world latest d1165f221234 6 months ago 13.3kB # 解釋 REPOSITORY: 鏡像倉庫源 TAG: 鏡像版本信息 IMAGE ID: 鏡像的ID CREATED: 鏡像的創(chuàng)建實(shí)際愛你 SIZE: 鏡像的大小 可選參數(shù) docker images -a : (--all) 列出所有鏡像 -q : (--quiet) 只顯示鏡像ID
2.1、搜索鏡像
docker search [xxx]
docker search mysql NAME DESCRIPTION STARS OFFICIAL AUTOMATED mysql MySQL is a widely used, open-source relation… 11470 [OK] mariadb MariaDB Server is a high performing open sou… 4354 [OK] mysql/mysql-server Optimized MySQL Server Docker images. Create… 848 [OK] percona Percona Server is a fork of the MySQL relati… 555 [OK] phpmyadmin phpMyAdmin - A web interface for MySQL and M… 332 [OK] centos/mysql-57-centos7 MySQL 5.7 SQL database server 91 [OK] docker search mysql --filter=STARS=3000 # 搜索start數(shù)大于3000的 NAME DESCRIPTION STARS OFFICIAL AUTOMATED mysql MySQL is a widely used, open-source relation… 11470 [OK] mariadb MariaDB Server is a high performing open sou… 4354 [OK]
2.2、拉取鏡像
hub 搜索
docker pull 鏡像名[:tag] # eg docker pull mysql Using default tag: latest # 如果不寫tag, 默認(rèn)就是latest latest: Pulling from library/mysql a330b6cecb98: Pull complete # 分層下載，docker image 的核心 聯(lián)合文件系統(tǒng) 9c8f656c32b8: Pull complete 88e473c3f553: Pull complete 062463ea5d2f: Pull complete daf7e3bdf4b6: Pull complete 1839c0b7aac9: Pull complete cf0a0cfee6d0: Pull complete 1b42041bb11e: Pull complete 10459d86c7e6: Pull complete b7199599d5f9: Pull complete 1d6f51e17d45: Pull complete 50e0789bacad: Pull complete Digest: sha256:99e0989e7e3797cfbdb8d51a19d32c8d286dd8862794d01a547651a896bcf00c # 簽名 Status: Downloaded newer image for mysql:latest docker.io/library/mysql:latest # 真實(shí)地址 ---- docker pull mysql 等價(jià)于 docker pull docker.io/library/mysql:latest --- # 指定tag docker pull mysql:5.7 5.7: Pulling from library/mysql a330b6cecb98: Already exists # 聯(lián)合文件系統(tǒng)，已存在的不再重復(fù)下載 9c8f656c32b8: Already exists 88e473c3f553: Already exists 062463ea5d2f: Already exists daf7e3bdf4b6: Already exists 1839c0b7aac9: Already exists cf0a0cfee6d0: Already exists fae7a809788c: Pull complete # 下載不存在的 dae5a82a61f0: Pull complete 7063da9569eb: Pull complete 51a9a9b4ef36: Pull complete Digest: sha256:d9b934cdf6826629f8d02ea01f28b2c4ddb1ae27c32664b14867324b3e5e1291 Status: Downloaded newer image for mysql:5.7 docker.io/library/mysql:5.7 --- #查看 docker images REPOSITORY TAG IMAGE ID CREATED SIZE mysql 5.7 1d7aba917169 3 weeks ago 448MB mysql latest 0716d6ebcc1a 3 weeks ago 514MB jenkins/jenkins latest ba8a0e5dc5cb 4 months ago 570MB nginx latest d1a364dc548d 4 months ago 133MB portainer/portainer latest 580c0e4e98b0 6 months ago 79.1MB hello-world latest d1165f221234 6 months ago 13.3kB
2.3、刪除鏡像
docker rmi -f [鏡像名、鏡像ID]
docker rmi -f [鏡像名、鏡像ID] docker rmi -f 1d7aba917169 Untagged: mysql:5.7 Untagged: mysql@sha256:d9b934cdf6826629f8d02ea01f28b2c4ddb1ae27c32664b14867324b3e5e1291 Deleted: sha256:1d7aba9171693947d53f474014821972bf25d72b7d143ce4af4c8d8484623417 Deleted: sha256:94ebbead5c58282fef91cc7d0fb56e4006a72434b4a6ae2cd5be98f369cb8c21 Deleted: sha256:989da5efad29ec59bd536cd393d277bc777f8b9b34b8e3ad9593a4b0a83b40f4 Deleted: sha256:7457ee6817c678da3cb383d27a3d79d5f3f25fbcb92958d5e8d5709e7631e23c Deleted: sha256:fe7dac53adebe33519b4e4fc577bfcddd7372cc313c35fae681fc82fb325fdc0
3、容器命令
有了鏡像才可以創(chuàng)建容器，下載centos鏡像進(jìn)行學(xué)習(xí)
docker pull centos
3.1、新建容器并啟動(dòng)
docker run [可選參數(shù)] imageName/imageId
# 參數(shù)說明
--name "NAME" 容器名字，tomcat01, tomcat02, 用來區(qū)分容器
-d 后臺(tái)方式運(yùn)行
-i , -t #使用交互模式運(yùn)行，可以進(jìn)入容器查看內(nèi)容
-p #指定容器端口 -p 8080
-p ip:主機(jī)端口:容器端口 -p 3344:80
-p 主機(jī)端口:容器端口 (常用)
-p 容器端口
容器端口
-P #隨機(jī)指定端口3.2、啟動(dòng)容器，并進(jìn)入容器
[root@iZm5e----- ~]# docker run -it centos /bin/bash [root@c4a1504a9cf9 /]# ls #查看容器內(nèi)的centos bin dev etc home lib lib64 lost+found media mnt opt proc root run sbin srv sys tmp usr var [root@c4a1504a9cf9 /]# exit # 退出容器 exit [root@iZm5e----- ~]#
CONTAINER ID c4a1504a9cf9
3.3、查看所有運(yùn)行的容器
docker ps # 查看運(yùn)行的容器 exit之后就停止了容器 docker ps -a # 查看所有運(yùn)行過的以及在運(yùn)行的容器 docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c4a1504a9cf9 centos "/bin/bash" 7 minutes ago Exited (0) 3 minutes ago hungry_euler dc0c5076048e hello-world "/hello" 2 months ago Exited (0) 2 months ago busy_cori docker ps -a -n=[數(shù)字] # 最近創(chuàng)建的容器 docker ps -a -n=1 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c4a1504a9cf9 centos "/bin/bash" 11 minutes ago Exited (0) 7 minutes ago hungry_euler
3.4、退出容器
exit #容器停止并退出 ctrl + p + q #容器不停止退出
3.5、刪除容器
docker rm 容器ID # 刪除指定容器 不能刪除正在運(yùn)行的容器 docker rm -f $(docker ps -aq) # 遞歸刪除所有容器 docker ps -a -q|xargs docker rm # 刪除所有容器
3.6、啟動(dòng)和停止容器
docker start 容器ID # 啟動(dòng)容器 docker restart 容器ID # 重啟容器 docker stop 容器ID # 停止當(dāng)前正在運(yùn)行的容器 docker kill 容器ID # 強(qiáng)制停止當(dāng)前容器
4、常用其它命令
4.1、后臺(tái)運(yùn)行容器
docker run -d centos 463f1dc43e444ff6b6d0efd3f0c5047e118ddf64deed3aea2a8b5a6c89df61bb [root@iZm5e----- ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES [root@iZm5e----- ~]#
發(fā)現(xiàn)后臺(tái)運(yùn)行的容器，停止了
? docker使用后臺(tái)運(yùn)行，就必須要有一個(gè)前臺(tái)進(jìn)程。否則，docker發(fā)現(xiàn)沒有服務(wù)，就會(huì)自動(dòng)停止??
4.2、查看日志
docker logs --help #shell腳本造日志 docker run -d centos /bin/sh -c "while true;do echo xiao;sleep 1;done" d5033adf13b49f537430fc19df9fe00b477301dfd3a2d9c287060c65c1a59d7b [root@iZm5e----- ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES d5033adf13b4 centos "/bin/sh -c 'while t…" 5 seconds ago Up 4 seconds competent_jang [root@iZm5e----- ~]# #顯示日志 docker logs -f -t --tail 10 d5033adf13b4 2021-09-27T07:05:08.800676670Z xiao 2021-09-27T07:05:09.803226803Z xiao 2021-09-27T07:05:10.806019019Z xiao 2021-09-27T07:05:11.809012200Z xiao 2021-09-27T07:05:12.811505073Z xiao 2021-09-27T07:05:13.817109532Z xiao 2021-09-27T07:05:14.819543508Z xiao 2021-09-27T07:05:15.822718210Z xiao ... -tf #顯示日志 --tail [數(shù)字] # 顯示日志的條數(shù)
4.3、查看容器中的進(jìn)程信息 (ps - linux)
docker top命令
docker top 容器ID docker top d5033adf13b4 UID PID PPID C STIME TTY TIME CMD root 29087 29069 0 15:01 ? 00:00:00 /bin/sh -c while true;do echo xiao;sleep 1;done root 29908 29087 0 15:08 ? 00:00:00 /usr/bin/coreutils --coreutils-prog-shebang=sleep /usr/bin/sleep 1 [root@iZm5e----- ~]#
4.4、查看鏡像的源數(shù)據(jù)
dockers inspect 命令
docker inspect d5033adf13b4
[
{
"Id": "d5033adf13b49f537430fc19df9fe00b477301dfd3a2d9c287060c65c1a59d7b",
"Created": "2021-09-27T07:01:42.833109605Z",
"Path": "/bin/sh",
"Args": [
"-c",
"while true;do echo xiao;sleep 1;done"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 29087,
"ExitCode": 0,
"Error": "",
"StartedAt": "2021-09-27T07:01:43.288158158Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6",
"ResolvConfPath": "/var/lib/docker/containers/d5033adf13b49f537430fc19df9fe00b477301dfd3a2d9c287060c65c1a59d7b/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/d5033adf13b49f537430fc19df9fe00b477301dfd3a2d9c287060c65c1a59d7b/hostname",
"HostsPath": "/var/lib/docker/containers/d5033adf13b49f537430fc19df9fe00b477301dfd3a2d9c287060c65c1a59d7b/hosts",
"LogPath": "/var/lib/docker/containers/d5033adf13b49f537430fc19df9fe00b477301dfd3a2d9c287060c65c1a59d7b/d5033adf13b49f537430fc19df9fe00b477301dfd3a2d9c287060c65c1a59d7b-json.log",
"Name": "/competent_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/overlay2/9aec4e083e254075a863c62c5c54f7ad2d7321750b4384ff1e092e25c5dc257e-init/diff:/var/lib/docker/overlay2/d6e4be0166eac21b08ff7e34bb088bd7488086c5fd04603879424af35f8e6190/diff",
"MergedDir": "/var/lib/docker/overlay2/9aec4e083e254075a863c62c5c54f7ad2d7321750b4384ff1e092e25c5dc257e/merged",
"UpperDir": "/var/lib/docker/overlay2/9aec4e083e254075a863c62c5c54f7ad2d7321750b4384ff1e092e25c5dc257e/diff",
"WorkDir": "/var/lib/docker/overlay2/9aec4e083e254075a863c62c5c54f7ad2d7321750b4384ff1e092e25c5dc257e/work"
},
"Name": "overlay2"
},
"Mounts": [],
"Config": {
"Hostname": "d5033adf13b4",
"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 xiao;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": "182c5e5a4f65a8c8ae6fffc733ef2ff02b9c7ea0e374331017cb651077fb77c6",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "/var/run/docker/netns/182c5e5a4f65",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "7dd5c90916bf7c472a88dc308498f198b59c9606c144c6d413b77ecc03e05cc1",
"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": "feafa30d4051f24353508959bd420fd163ad0c98d6b30ec8ff13b59a59552bb1",
"EndpointID": "7dd5c90916bf7c472a88dc308498f198b59c9606c144c6d413b77ecc03e05cc1",
"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
}
}
}
}
]
[root@iZm5e----- ~]#4.5、進(jìn)入當(dāng)前正在運(yùn)行的容器
4.5.1、docker exec -it 容器ID bashShell （常用）
docker exec -it d5033adf13b4 /bin/bash [root@d5033adf13b4 /]# ls bin dev etc home lib lib64 lost+found media mnt opt proc root run sbin srv sys tmp usr var [root@d5033adf13b4 /]# ps -ef UID PID PPID C STIME TTY TIME CMD root 1 0 0 07:01 ? 00:00:00 /bin/sh -c while true;do echo xiao;sleep 1;done root 1895 0 0 07:33 pts/0 00:00:00 /bin/bash root 1937 1 0 07:33 ? 00:00:00 /usr/bin/coreutils --coreutils-prog-shebang=sleep /usr/bin/sleep 1 root 1938 1895 0 07:33 pts/0 00:00:00 ps -ef [root@d5033adf13b4 /]#
4.5.2、docker attach 容器ID
docker attach d5033adf13b4 xiao xiao xiao xiao xiao ...
4.5.3、二者區(qū)別
docker exec # 進(jìn)入容器后，開啟一個(gè)新的終端，可以在里面操作
docker attach # 進(jìn)入容器正在執(zhí)行的終端，不會(huì)開啟新的進(jìn)程。
4.6、拷貝容器內(nèi)文件到主機(jī)上
手動(dòng)同步
docker cp 命令
docker cp 容器ID:容器內(nèi)路徑 目的主機(jī)路徑 docker cp 2b7529b86ad0:/home/index.txt /home [root@iZm5e----- ~]# ls life mysql-community-release-el7-5.noarch.rpm study testSH work [root@iZm5e----- ~]# cd /home/ [root@iZm5e----- home]# ls index.txt jenkins test [root@iZm5e----- home]#
4.6.1、問題探索
??如何實(shí)現(xiàn)自動(dòng)同步，打通容器和主機(jī)
這個(gè)問題下篇講解??
4.7、查看cpu內(nèi)存使用情況
docker stats
每秒刷新
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