1.环境准备
[root@localhost ~]# getenforce #关闭selinux
Disabled
[root@localhost ~]# iptables -F #清空规则
[root@localhost ~]# systemctl stop firewalld #关闭防火墙
[root@localhost ~]# cat <<EOF > /etc/sysctl.d/docker.conf #开启流量转发
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.all.rp_filter = 0
net.ipv4.ip_forward = 1
EOF
[root@localhost ~]# modprobe br_netfilter #加载参数，配置文件
[root@localhost ~]# sysctl -p /etc/sysctl.d/docker.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.all.rp_filter = 0
net.ipv4.ip_forward = 1
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2.yum安装
#下载阿里源repo文件
[root@localhost ~]# curl -o /etc/yum.repos.d/Centos-7.repo http://mirrors.aliyun.com/repo/Centos-7.repo
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 2318 100 2318 0 0 15491 0 --:--:-- --:--:-- --:--:-- 15557
#docker repo文件
[root@localhost ~]# curl -o /etc/yum.repos.d/docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 2081 100 2081 0 0 19671 0 --:--:-- --:--:-- --:--:-- 19819
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#检查yum源
[root@localhost ~]# yum makecache
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#查看yun有哪些docker-ce的版本
[root@localhost ~]# yum list docker-ce --showduplicates | sort -r
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#安装docker
[root@localhost ~]# yum -y install docker-ce-20.10.6
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#配置阿里云的镜像加速器
https://cr.console.aliyun.com/cn-hangzhou/instances/mirrors
#修改daemon配置文件/etc/docker/daemon.json来使用加速器
[root@localhost ~]# mkdir -p /etc/docker
[root@localhost ~]# tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://p0pgcdb3.mirror.aliyuncs.com"]
}
EOF
[root@localhost ~]#
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#加载配置文件，重启服务
[root@localhost ~]# systemctl daemon-reload
[root@localhost ~]# systemctl restart docker
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#补充
docker pull 名称 #拉取镜像
[root@localhost ~]# docker pull mysql #示例
docker images #查看镜像
[root@localhost ~]# docker images #示例
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest ddcca4b8a6f0 6 days ago 105MB
nginx latest dd34e67e3371 6 days ago 133MB
mysql latest 5a4e492065c7 6 days ago 514MB
centos latest 300e315adb2f 8 months ago 209MB
docker run -it 镜像：版本号 bash #进入镜像。不加版本号默认最新的版本
[root@localhost ~]# docker run -it redis bash #示例
root@8e840d63fbdb:/data#
docker rm 进程ID号 #停止该进程服务
[root@localhost ~]# docker rm 5ea #示例
5ea
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
docker rmi 镜像 #删除镜像
[root@localhost ~]# docker rmi centos #示例
Untagged: centos:latest
Untagged: centos@sha256:5528e8b1b1719d34604c87e11dcd1c0a20bedf46e83b5632cdeac91b8c04efc1
Deleted: sha256:300e315adb2f96afe5f0b2780b87f28ae95231fe3bdd1e16b9ba606307728f55
Deleted: sha256:2653d992f4ef2bfd27f94db643815aa567240c37732cae1405ad1c1309ee9859
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest ddcca4b8a6f0 6 days ago 105MB
nginx latest dd34e67e3371 6 days ago 133MB
docker ps #显示当前正在运行的镜像容器
docker image save 镜像 > 所需导出路径 #导出镜像到某路径
[root@localhost ~]# docker image save centos > /opt/centos.tgz #示例
docker image load -i /路径/镜像压缩包
[root@localhost ~]# docker image load -i /opt/centos.tgz #示例
docker run -d --name 名字 -p 镜像内端口：本机端口 镜像
[root@localhost ~]# docker run -d --name q_nginx -p 81:80 nginx
docker commit 进程ID 新命名 #提交容器
[root@localhost ~]# docker commit a620c3df8eea my_centos/vim #示例
docker inspect 进程ID #查看详细信息
[root@localhost html]# docker inspect d067d8c8b387 #示例
[
{
"Id": "d067d8c8b3879a1c6ffd7d8b4d6f765c4fbaf990ec178b50fc689251716b355f",
"Created": "2021-08-26T07:37:06.923444949Z",
"Path": "/docker-entrypoint.sh",
"Args": [
"bash"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 8122,
"ExitCode": 0,
"Error": "",
"StartedAt": "2021-08-26T07:37:07.17583544Z",
"FinishedAt": "0001-01-01T00:00:00Z"
原文链接：https://blog.csdn.net/weixin_48724266/article/details/119823179
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