电子商务网站的建设流程,谷歌推广怎么开户,网站建设类型报价表,天津有做网站不错的吗【Docker】Docker学习③ - Docker镜像管理 三、Docker镜像管理1. 搜索镜像2. 下载镜像3. 查看本地镜像4. 镜像导出5. 镜像导入6. 删除镜像7. 容器操作基础命令7.1 从镜像启动一个容器7.2 显示正在运行的容器7.3 显示所有容器7.4 删除运行中的容器7.5 随机映射端口7.6 指定端口映… 【Docker】Docker学习③ - Docker镜像管理 三、Docker镜像管理1. 搜索镜像2. 下载镜像3. 查看本地镜像4. 镜像导出5. 镜像导入6. 删除镜像7. 容器操作基础命令7.1 从镜像启动一个容器7.2 显示正在运行的容器7.3 显示所有容器7.4 删除运行中的容器7.5 随机映射端口7.6 指定端口映射7.7 查看容器已经映射的端口7.8 自定义容器名称7.9 后台启动容器7.10 创建并进入容器7.11 单次运行7.12 传递运行命令7.13 容器的启动和关闭7.14 进入到正在运行的容器7.15 查看容器内部的hosts文件7.16 批量关闭正在运行的容器7.17 批量强制关闭正在运行中的容器7.18 批量删除已退出容器7.19 批量删除所有容器7.20 指定容器DNS 三、Docker镜像管理
Docker镜像含有启动容器所需的文件系统及所需要的内容因此镜像主要用于创建并启动docker容器。Docker镜像里面是一层层文件系统叫做Union FS联合文件系统联合文件系统可以将几层目录挂载到一起形成一个虚拟文件系统虚拟文件系统的目录结构就像普通linux的目录结构一样docker通过这些文件再加上宿主机的内核提供了一个linux的虚拟环境每一层文件系统我们叫做layer连恶化文件系统可以对每一层文件系统设置三种权限只读readonly、读写readwrite和写出whiteout-able但是docker镜像中每一层文件系统都是只读的构建镜像的时候从一个最基本的操作系统开始每个构建的操作都相当于做一层的修改增加了一层文件系统一层层往上叠加上层的修改会覆盖底层该位置的可见性这也很容易理解就像上层把底层遮住了一样当使用镜像的时候我们只会看到一个完全的整体不知道里面有几层也不需要知道里面有几层结构如下 一个典型的linux文件系统由bootfs和rootfs两部分组成。 bootfsboot file system主要包含bootloader和kernel bootloader主要用于加载kernel当kernel被加载到内存中后bootfs会被umount掉。rootfsroot file system包含的就是典型Linux系统中的 /dev,/proc,/bin,/etc 等标准目录和文件。 对于docker镜像通常都比较小官方提供的centos基础镜像在200MB左右一些其他版本的镜像甚至只有几MBdocker镜像直接调用宿主机的内核镜像中只提供rootfs也就是只需要包括最基本的命令、工具和程序库就可以了比如alpine镜像在5MB左右。
1. 搜索镜像
在官方的docker仓库中搜索指定名称的docker镜像也会有很多三方镜像。 docker search centos:7.2.1511 #带指定版本号 docker search centos #不带版本号默认latest
2. 下载镜像
从docker仓库将镜像下载到本地 docker pull 仓库服务器:端口/项目名称/镜像名称:tag(版本)号docker pull alpinedocker pull nginxdocker pull hello-worlddocker pull centos3. 查看本地镜像
下载完成的镜像比下载的大因为下载完成后会解压 docker imagesREPOSITORY #镜像所属的仓库名称TAG #镜像版本号标识符默认为latestIMAGE ID #镜像唯一ID标识CREATED #镜像创建的时间VIRTUAL SIZE #镜像的大小4. 镜像导出
可以将镜像从本地导出为一个压缩文件然后复制到其他服务器进行导入使用 导出方法1 docker save centos -o /opt/centos.tar.gzll /opt/centos.tar.gz导出方法2: docker save centos /opt/centos-1.tar.gzll /opt/centos-1.tar.gz查看镜像内容tar xvf centos.tar.gzcat manifest.json #包含了镜像的相关配置配置文件、分层[rootgbase8c_private opt]# cat manifest.json [{Config:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6.json,RepoTags:[centos:latest],Layers:[079bc5e75545bf45253ab44ce73fbd51d96fa52ee799031e60b65a82e89df662/layer.tar]}]#分层为了方便文件的使用即相同的文件可以共用5. 镜像导入 docker load /opt/centos.tar.gz[rootgbase8c_1 opt]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZE[rootgbase8c_1 opt]# docker load /opt/centos.tar.gz74ddd0ec08fa: Loading layer [] 238.6MB/238.6MBLoaded image: centos:latest验证镜像 docker images[rootgbase8c_1 opt]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEcentos latest 5d0da3dc9764 2 years ago 231MB6. 删除镜像
docker rmi centos 日志 [rootgbase8c_private opt]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEalpine latest 8ca4688f4f35 7 weeks ago 7.34MBnginx latest 605c77e624dd 23 months ago 141MBhello-world latest feb5d9fea6a5 2 years ago 13.3kBcentos latest 5d0da3dc9764 2 years ago 231MB[rootgbase8c_private opt]# docker rmi centosUntagged: centos:latestUntagged: centossha256:a27fd8080b517143cbbbab9dfb7c8571c40d67d534bbdee55bd6c473f432b177Deleted: sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6Deleted: sha256:74ddd0ec08fa43d09f32636ba91a0a3053b02cb4627c35051aff89f853606b59[rootgbase8c_private opt]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEalpine latest 8ca4688f4f35 7 weeks ago 7.34MBnginx latest 605c77e624dd 23 months ago 141MBhello-world latest feb5d9fea6a5 2 years ago 13.3kB7. 容器操作基础命令
命令格式 #docker run [选项] [镜像名] [shell命令] [参数]#docker run [参数选项] [镜像名称必须在所有选项的后面] [/bin/echo/ hello world] #单次执行没有自定义容器名称#docker run centos /bin/echo hello world #启动的容器在执行完shell命令就退出了7.1 从镜像启动一个容器
会直接进入到容器并随机生成容器ID和名称
docker run -it docker.io/centos bash
#退出容器不注销
ctrlpq7.2 显示正在运行的容器
docker ps7.3 显示所有容器
包括当前正在运行以及以及关闭的所有容器
docker ps -a
[rootgbase8c_private ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7d6158088cbd centos bash About a minute ago Up About a minute loving_mcnulty
e3e5fc354a71 hello-world /hello About a minute ago Exited (0) About a minute ago determined_mayer7.4 删除运行中的容器
即使容器正在运行当中也会被强制删除掉
docker rm -f id
[rootgbase8c_private ~]# docker rm -f 7d6158088cbd
7d6158088cbd
[rootgbase8c_private ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e3e5fc354a71 hello-world /hello 2 minutes ago Exited (0) 2 minutes ago determined_mayer7.5 随机映射端口
docker pull nginx #下载nginx 镜像
docker run -P docker.io/nginx #前台启动并随机映射本地端口到容器的80前台启动的会话窗口无法进行其他操作除非退出但是退出后容器也会退出 随机端口映射其实是默认从32768开始 [rootgbase8c_private ~]# docker run -P docker.io/nginx/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d//docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh/docker-entrypoint.sh: Configuration complete; ready for start up2023/11/21 11:43:14 [notice] 1#1: using the epoll event method2023/11/21 11:43:14 [notice] 1#1: nginx/1.21.52023/11/21 11:43:14 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6) 2023/11/21 11:43:14 [notice] 1#1: OS: Linux 3.10.0-1160.71.1.el7.x86_642023/11/21 11:43:14 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:10485762023/11/21 11:43:14 [notice] 1#1: start worker processes2023/11/21 11:43:14 [notice] 1#1: start worker process 292023/11/21 11:43:14 [notice] 1#1: start worker process 30[rootgbase8c_private ~]# ss -nlt | grep 32LISTEN 0 128 [::]:32768 [::]:* [rootgbase8c_private ~]# lsof -i:32768COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAMEdocker-pr 18312 root 4u IPv6 1918183 0t0 TCP *:filenet-tms (LISTEN)7.6 指定端口映射
方式一本地端口81映射到容器80端口 docker run -d -p 81:80 --name nginx-test-port1 nginx方式二本地IP:本地端口:容器端口 docker run -d -p 192.168.56.199:82:80 --name nginx-test-port2 docker.io/nginx方式三本地IP:本地随机端口:容器端口 docker run -d -p 192.168.56.199::80 --name nginx-test-port3 docker.io/nginx方式四本机IP:本地端口:容器端口/协议,默认为TCP协议 docker run -d -p 192.168.56.199:83:80/udp --name nginx-test-port4 docker.io/nginx方式五一次性映射多个端口协议 docker run -d -p 86:80/tcp -p 443:443/tcp -p 54:54/udp --name nginx-test-port5 docker.io/nginx查看运行的容器 [rootgbase8c_private ~]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESe98563df7763 nginx /docker-entrypoint.… 31 seconds ago Up 30 seconds 0.0.0.0:54-54/udp, 0.0.0.0:443-443/tcp, 0.0.0.0:86-80/tcp nginx-test-port5d906beba9990 nginx /docker-entrypoint.… 2 minutes ago Up 2 minutes 80/tcp, 192.168.56.199:83-80/udp nginx-test-port43a11ac02e895 nginx /docker-entrypoint.… 2 minutes ago Up 2 minutes 192.168.56.199:32768-80/tcp nginx-test-port38af8fc6162d8 nginx /docker-entrypoint.… 3 minutes ago Up 3 minutes 192.168.56.199:82-80/tcp nginx-test-port26f9517d4c2d6 nginx /docker-entrypoint.… 3 minutes ago Up 3 minutes 0.0.0.0:81-80/tcp nginx-test-port1查看Nginx容器访问日志 docker logs nginx-test-port3docker logs -f nginx-test-port37.7 查看容器已经映射的端口
docker port nginx-test-port5 日志 [rootgbase8c_private ~]# docker port nginx-test-port5443/tcp - 0.0.0.0:44354/udp - 0.0.0.0:5480/tcp - 0.0.0.0:867.8 自定义容器名称 docker run -it --name nginx-test nginx7.9 后台启动容器 docker run -d -P --name nginx-test1 docker.io/nginxdocker run -d --name centos-test1 docker.io/centos[rootgbase8c_private ~]# docker run -d --name centos-test1 docker.io/centose5ff3cdb2754c37f706e29dd4be5a37e755e46889cada528562def7798899af27.10 创建并进入容器
创建容器后直接进入执行exit退出后容器关闭 docker run -t -i --name test-centos2 docker.io/centos /bin/bash日志 [rootgbase8c_private ~]# docker run -t -i --name test-centos2 docker.io/centos /bin/bash[root5cb9c84e7d17 /]# ps -auxUSER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMANDroot 1 1.2 0.0 12036 2108 pts/0 Ss 01:55 0:00 /bin/bashroot 13 0.0 0.0 47572 2060 pts/0 R 01:55 0:00 ps -aux7.11 单次运行
容器退出后自动删除 docker run -it --rm --name nginx-delete-test docker.io/nginx日志在4.7.137.12 传递运行命令
容器需要有一个前台运行的进程才能保持容器的运行通过传递运行参数是一种方式另外一可以在构建镜像的时候指定容器启动时运行的前台命令。 docker run -d centos /usr/bin/tail -f ‘/etc/hosts’ 日志
[rootgbase8c_private ~]# docker run -d centos /usr/bin/tail -f /etc/hosts74c0f99166085629ed7c488769505a7c35c9a98f96962594593ff0cc8960485d[rootgbase8c_private ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES74c0f9916608 centos /usr/bin/tail -f /e… 3 seconds ago Up 3 seconds competent_jepsenbd16c6917a24 nginx /docker-entrypoint.… 4 minutes ago Up 4 minutes 80/tcp nginx-delete-test17.13 容器的启动和关闭
docker stop 容器ID docker start 容器ID 日志: [rootgbase8c_private ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES74c0f9916608 centos /usr/bin/tail -f /e… 3 seconds ago Up 3 seconds competent_jepsenbd16c6917a24 nginx /docker-entrypoint.… 4 minutes ago Up 4 minutes 80/tcp nginx-delete-test1c844e569456f nginx /docker-entrypoint.… 4 minutes ago Up 4 minutes 80/tcp nginx-delete-teste98563df7763 nginx /docker-entrypoint.… 18 minutes ago Up 18 minutes 0.0.0.0:54-54/udp, 0.0.0.0:443-443/tcp, 0.0.0.0:86-80/tcp nginx-test-port5d906beba9990 nginx /docker-entrypoint.… 20 minutes ago Up 20 minutes 80/tcp, 192.168.56.199:83-80/udp nginx-test-port43a11ac02e895 nginx /docker-entrypoint.… 20 minutes ago Up 20 minutes 192.168.56.199:32768-80/tcp nginx-test-port38af8fc6162d8 nginx /docker-entrypoint.… 20 minutes ago Up 20 minutes 192.168.56.199:82-80/tcp nginx-test-port26f9517d4c2d6 nginx /docker-entrypoint.… 21 minutes ago Up 21 minutes 0.0.0.0:81-80/tcp nginx-test-port1[rootgbase8c_private ~]# docker stop bd16c6917a24bd16c6917a24[rootgbase8c_private ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES74c0f9916608 centos /usr/bin/tail -f /e… About a minute ago Up About a minute competent_jepsenc844e569456f nginx /docker-entrypoint.… 5 minutes ago Up 5 minutes 80/tcp nginx-delete-teste98563df7763 nginx /docker-entrypoint.… 19 minutes ago Up 19 minutes 0.0.0.0:54-54/udp, 0.0.0.0:443-443/tcp, 0.0.0.0:86-80/tcp nginx-test-port5d906beba9990 nginx /docker-entrypoint.… 21 minutes ago Up 21 minutes 80/tcp, 192.168.56.199:83-80/udp nginx-test-port43a11ac02e895 nginx /docker-entrypoint.… 21 minutes ago Up 21 minutes 192.168.56.199:32768-80/tcp nginx-test-port38af8fc6162d8 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 192.168.56.199:82-80/tcp nginx-test-port26f9517d4c2d6 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 0.0.0.0:81-80/tcp nginx-test-port1[rootgbase8c_private ~]# docker start bd16c6917a24Error response from daemon: No such container: bd16c6917a24Error: failed to start containers: bd16c6917a24[rootgbase8c_private ~]# docker stop 74c0f991660874c0f9916608[rootgbase8c_private ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESc844e569456f nginx /docker-entrypoint.… 6 minutes ago Up 6 minutes 80/tcp nginx-delete-teste98563df7763 nginx /docker-entrypoint.… 19 minutes ago Up 19 minutes 0.0.0.0:54-54/udp, 0.0.0.0:443-443/tcp, 0.0.0.0:86-80/tcp nginx-test-port5d906beba9990 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 80/tcp, 192.168.56.199:83-80/udp nginx-test-port43a11ac02e895 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 192.168.56.199:32768-80/tcp nginx-test-port38af8fc6162d8 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 192.168.56.199:82-80/tcp nginx-test-port26f9517d4c2d6 nginx /docker-entrypoint.… 23 minutes ago Up 23 minutes 0.0.0.0:81-80/tcp nginx-test-port1[rootgbase8c_private ~]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES74c0f9916608 centos /usr/bin/tail -f /e… 2 minutes ago Exited (137) 11 seconds ago competent_jepsenc844e569456f nginx /docker-entrypoint.… 6 minutes ago Up 6 minutes 80/tcp nginx-delete-teste5ff3cdb2754 centos /bin/bash 7 minutes ago Exited (0) 7 minutes ago centos-test15cb9c84e7d17 centos /bin/bash 11 minutes ago Exited (130) 7 minutes ago test-centos2264f9bd66c3f nginx /docker-entrypoint.… 15 minutes ago Exited (0) 15 minutes ago nginx-teste98563df7763 nginx /docker-entrypoint.… 20 minutes ago Up 20 minutes 0.0.0.0:54-54/udp, 0.0.0.0:443-443/tcp, 0.0.0.0:86-80/tcp nginx-test-port5d906beba9990 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 80/tcp, 192.168.56.199:83-80/udp nginx-test-port43a11ac02e895 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 192.168.56.199:32768-80/tcp nginx-test-port38af8fc6162d8 nginx /docker-entrypoint.… 22 minutes ago Up 22 minutes 192.168.56.199:82-80/tcp nginx-test-port26f9517d4c2d6 nginx /docker-entrypoint.… 23 minutes ago Up 23 minutes 0.0.0.0:81-80/tcp nginx-test-port15f5d8410b29a nginx /docker-entrypoint.… 14 hours ago Exited (0) 14 hours ago musing_wozniake3e5fc354a71 hello-world /hello 15 hours ago Exited (0) 15 hours ago determined_mayer[rootgbase8c_private ~]# docker start 74c0f991660874c0f9916608[rootgbase8c_private ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES74c0f9916608 centos /usr/bin/tail -f /e… 2 minutes ago Up 5 seconds competent_jepsenc844e569456f nginx /docker-entrypoint.… 7 minutes ago Up 7 minutes 80/tcp nginx-delete-teste98563df7763 nginx /docker-entrypoint.… 21 minutes ago Up 20 minutes 0.0.0.0:54-54/udp, 0.0.0.0:443-443/tcp, 0.0.0.0:86-80/tcp nginx-test-port5d906beba9990 nginx /docker-entrypoint.… 23 minutes ago Up 23 minutes 80/tcp, 192.168.56.199:83-80/udp nginx-test-port43a11ac02e895 nginx /docker-entrypoint.… 23 minutes ago Up 23 minutes 192.168.56.199:32768-80/tcp nginx-test-port38af8fc6162d8 nginx /docker-entrypoint.… 23 minutes ago Up 23 minutes 192.168.56.199:82-80/tcp nginx-test-port26f9517d4c2d6 nginx /docker-entrypoint.… 24 minutes ago Up 24 minutes 0.0.0.0:81-80/tcp nginx-test-port17.14 进入到正在运行的容器
7.14.1 使用attach命令 使用方式为docker attact 容器名attach类似于vnc操作会在各个容器界面显示所有使用此方式进入容器的操作都是同步显示的且exit后容器将被关闭且使用exit退出后容器关闭不推荐使用需要进入到有shell环境的容器比如centos为例
docker run -it centos centos bash7.14.2 使用exec命令 执行单次命令进入容器不是很推荐此方式虽然exit退出容器还在运行。 docker exec -it centos-test3 /bin/bash 日志 [rootgbase8c_private ~]# docker run --name centos-test3 -itd docker.io/centos /bin/bash46d17824678e24c8642e9e782e21c556b041889192733869c9dba2f50c120347[rootgbase8c_private ~]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES46d17824678e centos /bin/bash 5 seconds ago Up 4 seconds centos-test3[rootgbase8c_private ~]# docker exec -it centos-test3 /bin/bash[root46d17824678e /]# lsbin etc lib lostfound mnt proc run srv tmp vardev home lib64 media opt root sbin sys usr[root46d17824678e /]# exitexit[rootgbase8c_private ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES46d17824678e centos /bin/bash 49 seconds ago Up 49 seconds centos-test37.14.3 使用nsenter命令 推荐使用此方式nsenter命令需要通过PID进入到容器内部不过可以使用docker inspect获取到容器的PID yum install util-linux #安装nsenter命令docker inspect -f {{.NetworkSettings.IPAddress}} 46d17824678e docker inspect -f {{.State.Pid}} mydocker #获取到某个docker容器的PID可以通过PID进入到容器内docker inspect -f {{.State.Pid}} centos-test3nsenter -t PID -m -u -i -n -p日志 [rootgbase8c_private ~]# docker inspect -f {{.NetworkSettings.IPAddress}} 46d17824678e 172.17.0.2[rootgbase8c_private ~]# docker inspect -f {{.State.Pid}} centos-test38645[rootgbase8c_private ~]# nsenter -t 8645 -m -u -i -n -p[root46d17824678e /]# lsbin dev etc home lib lib64 lostfound media mnt opt proc root run sbin srv sys tmp usr var7.14.4 脚本方式 测试脚本是否可以正常进入到容器且退出后仍然正常运行 chmod ax docker-in.sh./docker-in.sh centos-test3日志 [rootgbase8c_private docker]# cat docker-in.sh#!/bin/bashdocker_in(){NAME_ID$1PID$(docker inspect -f {{.State.Pid}} ${NAME_ID})nsenter -t ${PID} -m -u -i -n -p}docker_in $1[rootgbase8c_private docker]# ./docker-in.sh centos-test3[root46d17824678e /]# pwd/[root46d17824678e /]# exitlogout[rootgbase8c_private docker]# ./docker-in.sh centos-test3[root46d17824678e /]# exitlogout7.15 查看容器内部的hosts文件
默认会将实例的ID添加到自己的hosts文件 日志 [rootgbase8c_private docker]# docker run -it --name test-centos3 docker.io/centos /bin/bash[rootcccb2108056e /]# cat /etc/hosts127.0.0.1 localhost::1 localhost ip6-localhost ip6-loopbackfe00::0 ip6-localnetff00::0 ip6-mcastprefixff02::1 ip6-allnodesff02::2 ip6-allrouters172.17.0.3 cccb2108056e #ping 容器ID[rootcccb2108056e /]# ping cccb2108056ePING cccb2108056e (172.17.0.3) 56(84) bytes of data.64 bytes from cccb2108056e (172.17.0.3): icmp_seq1 ttl64 time0.029 ms64 bytes from cccb2108056e (172.17.0.3): icmp_seq2 ttl64 time0.037 ms64 bytes from cccb2108056e (172.17.0.3): icmp_seq3 ttl64 time0.034 ms^C--- cccb2108056e ping statistics ---3 packets transmitted, 3 received, 0% packet loss, time 2007msrtt min/avg/max/mdev 0.029/0.033/0.037/0.005 ms7.16 批量关闭正在运行的容器
docker stop $(docker ps -a -q) #正常关闭所有运行中的容器 日志 [rootgbase8c_private docker]# docker stop $(docker ps -a -q)cccb2108056e46d17824678e7.17 批量强制关闭正在运行中的容器
docker kill $(docker ps -a -q) 日志 [rootgbase8c_private docker]# docker kill $(docker ps -a -q)Error response from daemon: Cannot kill container: cccb2108056e: Container cccb2108056e5fea630892d67139ad6ee2bfa666f9d0eae738ff8c5d34984d29 is not running[rootgbase8c_private docker]# docker start cccb2108056ecccb2108056e[rootgbase8c_private docker]# docker kill $(docker ps -a -q)cccb2108056e7.18 批量删除已退出容器
docker rm -f docker ps -aq -f statusexited 日志 [rootgbase8c_private docker]# docker rm -f docker ps -aq -f statusexitedcccb2108056e7.19 批量删除所有容器
docker rm -f $(docker ps -a -q) 日志 [rootgbase8c_private docker]# docker run -itd --name centos-test4 docker.io/centos /bin/bash 64bf39002c67ff9aded56780315a4a8c4639a3189d891cdd35092e1c203d4f6d[rootgbase8c_private docker]# docker rm -f $(docker ps -a -q)64bf39002c67261a6c2dd2607.20 指定容器DNS
Dns服务默认采用宿主机的dns地址 一是将dns地址配置在宿主机 二是将参数配置在docker启动脚本里面 -dns1.1.1.1 docker run -it --rm --dns 223.6.6.6 centos bash cat /etc/resolv.conf 日志 [rootgbase8c_private docker]# docker run -it --rm --dns 223.6.6.6 centos bash[rootc01a69476a06 /]# cat /etc/resolv.confnameserver 223.6.6.6
