1. yum 配置
(1)更新yum
yum update -y
如果不升级更新yum 可能在后续docker部署后再更新容器会出现oci runtime error等
(2)安装yum工具类准备
yum install -y yum-utils device-mapper-persistent-data lvm2
(3)配置yum源为阿里云yum源
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
2. docker 安装
yum install docker-ce
中间会遇到需要输入的按y
(1)启动docker服务
systemctl start docker
(2)允许docker开机自启动
systemctl enable docker
(3)查看docker运行状态
systemctl status docker
3. 设置Docker国内镜像源
由于docker默认从docker hub(https://registry.hub.docker.com/)下载镜像,所以速度非常慢,可以通过设置为国内镜像源(加速器)
(1)通过 vi/vim 进入/etc/docker/daemon.json,
如果没有这个文件,需要在 /etc/docker
目录下手动进行创建这个目录。
(2)然后写入一下的内容
{
"registry-mirrors": [
"https://dockerproxy.com",
"https://docker.mirrors.ustc.edu.cn",
"https://docker.nju.edu.cn"
]
}
(3)进行重启docker服务
# 重新加载 systemd 的配置
sudo systemctl daemon-reload
# 重启 Docker 服务
sudo systemctl restart docker
4. 问题解决
(1)遇到报错
“Repository extras is listed more than once in the configuration
CentOS Linux 8 - AppStream 0.0 B/s | 0 B 00:00
Errors during downloading metadata for repository 'appstream':
- Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org]
错误:为仓库 'appstream' 下载元数据失败 : Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org]”
原因 : CentOS Linux 8已于 2021年12月31日停止更新和维护,由于CentOS 团队从官方镜像中移除CentOS 8的所有包,所以在使用yum源安装或更新会报上述失败错误。
解决办法:
执行yum命令,报错Errors during downloading metadata for repository ‘appstream‘: - Curl error (6): Couldn‘-CSDN博客我在云服务器Linux CentOS 上面执行yum命令,出现提示“Errors during downloading metadata for repository 'appstream':错误:为仓库 'appstream' 下载元数据失败 : Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?https://blog.csdn.net/u013302168/article/details/141923953?csdn_share_tail=%7B%22type%22%3A%22blog%22%2C%22rType%22%3A%22article%22%2C%22rId%22%3A%22141923953%22%2C%22source%22%3A%22u013302168%22%7D