环境信息
CentOS Linux release 7.8.2003 (Core)
链接：https://pan.baidu.com/s/1EzNSL4YpiHc4Yz80yDwuVA
提取码：r222
$ cat /etc/redhat-release
$ cat /proc/versionDocker version 1.13.1, build 64e9980/1.13.1
$ docker --verison配置网络
查看网卡配置
$ ip addr配置网卡自启动
$ vi /etc/sysconfig/network-scripts/ifcfg-ens33修改ONBOOT=yes
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=45166c14-a7e4-477a-b3dc-931692773e0f
DEVICE=ens33
ONBOOT=yes # 修改此处为yes输入:wq保存并退出
重启网络服务
$ service network restartping百度验证网络连通性
$ ping www.baidu.com
PING www.a.shifen.com (14.215.177.39) 56(84) bytes of data.
64 bytes from 14.215.177.39 (14.215.177.39): icmp_seq=1 ttl=47 time=22.7 ms
64 bytes from 14.215.177.39 (14.215.177.39): icmp_seq=2 ttl=47 time=22.4 ms
64 bytes from 14.215.177.39 (14.215.177.39): icmp_seq=3 ttl=47 time=22.1 ms
^C
--- www.a.shifen.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2007ms
rtt min/avg/max/mdev = 22.177/22.491/22.798/0.253 ms配置yum
使用yum下载wget
$ yum install wget删除yum默认源
$ rm -rf /etc/yum.repos.d/*为yum配置阿里云源
$ wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo刷新yum缓存使之生效
$ yum clean all # 清除系统所有的yum缓存
$ yum makecache # 生成yum缓存Screen的配置与使用
使用yum安装screen
$ yum install screen创建名为docker的会话，创建后自动进入该会话
$ screen -S docker使用ctrl+a+d来暂离（detached）当前进入的会话
[detached from 2145.docker]查看所有的screen会话状态
$ screen -lsThere are screens on:
2231.nginx (Attached)
2145.docker (Detached)
2 Sockets in /var/run/screen/S-root.
共享模式进入已经被Attached的会话
$ screen -x docker从会话内部退出并关闭会话
exit强制从主机关闭名为docker的会话，将会强行将所有连接的用户弹出
screen -S docker -X quitDocker的安装与配置
查看是否已经安装docker
$ yum list installed | grep docker卸载docker及其相关拓展
$ yum remove docker* # 其中*号为通配符使用yum安装docker
$ yum install docker查看docker服务状态
$ service docker status启动docker服务
$ service docker start设置docker服务开机自启动
$ systemctl enable docker查看docker是否为开机自启动
$ systemctl list-unit-files | grep docker配置docker源
$ vi /etc/docker/daemon.json在阿里云容器镜像服务页面中登陆并获取适配个人所在网络的加速地址，在文件中写入地址
{
"registry-mirrors": ["https://81rkondt.mirror.aliyuncs.com"]
}:wq保存并退出
重新生成系统依赖树并重启docker服务
$ systemctl daemon-reload
$ service docker restart检查docerk配置
$ docker infoPlay with Docker
https://labs.play-with-docker.com/
在docker源中搜索镜像
$ docker search httpd下载docker镜像文件
$ docker pull httpd:latest查看已下载的docker镜像文件
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/httpd latest c39a868aad02 8 hours ago 133 MB创建docker容器
$ docker run -itd --name httpd -p 81:80 docker.io/httpdrun命令详解
https://www.runoob.com/docker/docker-run-command.html
查看已创建的docker容器
$ docker ps -a停止容器
$ docker stop httpd删除容器
$ docker rm my_nginx重启容器
$ docker restart httpd使用yum安装telnet
$ yum install telnet测试本机81端口
$ telnet localhost 81远程测试81端口
http://10.101.53.65:81/如若本机测试端口成功，远程测试失败，则可能为火墙导致，需在火墙开启对应端口
https://www.ihawo.com/archives/214.html
使用exec进入container可查看文件目录
$ docker exec -it httpd /bin/bashContainer容器与host宿主间拷贝文件
使用docker cp命令拷贝
自动覆盖同名文件、可重命名考出的文件
$ docker cp apache:/usr/local/apache2/htdocs/index.html /home/index.htmlContainer的备份与迁移
使用commit命令将container容器提交并合并到image镜像中
$ docker commit --author shxuai --message "backup for apache by shxuai in 20201110" apache apache_backup_20201110查看生成的image镜像
$ docker images将新生成的image镜像保存为tar文件
$ docker save -o /home/apache_backup_20201110.tar apache_backup_20201110查看备份文件
$ cd /home; ll导入备份文件
$ docker load -i /home/apache_backup_20201110.tar 创建container容器
$ docker run -itd --name apache -p 80:80 apache_backup_20201110浏览器访问验证
http://10.101.53.65:80修改已经创建的container的运行参数
将上述nginx container的端口映射从81改为82
查看需要修改的container ID
$ docker ps -a停止docker服务
$ service docker stop使用yum安装vim
$ yum install vim进入对应container的配置文件修改配置
$ vim /var/lib/docker/containers/{container ID}/hostconfig.json将PortBindings中的HostPort的值从81改为82，:wq保存并退出
{
"Binds":null,
"ContainerIDFile":"",
"LogConfig":{
"Type":"journald",
"Config":{
}
},
"NetworkMode":"default",
"PortBindings":{
"80/tcp":[
{
"HostIp":"",
"HostPort":"81"
}
]
},
"RestartPolicy":{
"Name":"no",
"MaximumRetryCount":0
},
"AutoRemove":false,
"VolumeDriver":"",
"VolumesFrom":null,
"CapAdd":null,
"CapDrop":null,
"Dns":[
],
"DnsOptions":[
],
"DnsSearch":[
],
"ExtraHosts":null,
"GroupAdd":null,
"IpcMode":"",
"Cgroup":"",
"Links":[
],
"OomScoreAdj":0,
"PidMode":"",
"Privileged":false,
"PublishAllPorts":false,
"ReadonlyRootfs":false,
"SecurityOpt":null,
"UTSMode":"",
"UsernsMode":"",
"ShmSize":67108864,
"Runtime":"docker-runc",
"ConsoleSize":[
0,
0
],
"Isolation":"",
"CpuShares":0,
"Memory":0,
"NanoCpus":0,
"CgroupParent":"",
"BlkioWeight":0,
"BlkioWeightDevice":null,
"BlkioDeviceReadBps":null,
"BlkioDeviceWriteBps":null,
"BlkioDeviceReadIOps":null,
"BlkioDeviceWriteIOps":null,
"CpuPeriod":0,
"CpuQuota":0,
"CpuRealtimePeriod":0,
"CpuRealtimeRuntime":0,
"CpusetCpus":"",
"CpusetMems":"",
"Devices":[
],
"DiskQuota":0,
"KernelMemory":0,
"MemoryReservation":0,
"MemorySwap":0,
"MemorySwappiness":-1,
"OomKillDisable":false,
"PidsLimit":0,
"Ulimits":null,
"CpuCount":0,
"CpuPercent":0,
"IOMaximumIOps":0,
"IOMaximumBandwidth":0
}重启docker服务
$ service docker restart重启container
$ docker start my_nginx查看端口映射
$ docker ps -a