1.docker 安装

1.使用环境为红帽8.1,添加源

yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

2.安装

yum install docker-ce docker-ce-cli containerd.io

显示出错

Docker CE Stable - x86_64                                                                                              70 kB/s |  15 kB     00:00    
 error: problem with installed package podman-3.0.1-6.module_el8.4.0+781+acf4c33b.x86_64
  - package podman-3.0.1-6.module_el8.4.0+781+acf4c33b.x86_64 requires runc >= 1.0.0-57, but none of the providers can be installed
  - package podman-3.0.1-7.module_el8.4.0+830+8027e1c4.x86_64 requires runc >= 1.0.0-57, but none of the providers can be installed
  - package containerd.io-1.4.9-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-70.rc92.module_el8.4.0+673+eabfc99d.x86_64
  - package containerd.io-1.4.9-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-70.rc92.module_el8.4.0+673+eabfc99d.x86_64
  - package containerd.io-1.4.9-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-73.rc93.module_el8.4.0+830+8027e1c4.x86_64
  - package containerd.io-1.4.9-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-73.rc93.module_el8.4.0+830+8027e1c4.x86_64
  - cannot install the best candidate for the job
  - package runc-1.0.0-64.rc10.module_el8.4.0+522+66908d0c.x86_64 is filtered out by modular filtering
  - package runc-1.0.0-65.rc10.module_el8.4.0+819+4afbd1d6.x86_64 is filtered out by modular filtering
  - package runc-1.0.0-70.rc92.module_el8.4.0+786+4668b267.x86_64 is filtered out by modular filtering
  - package runc-1.0.0-71.rc92.module_el8.4.0+833+9763146c.x86_64 is filtered out by modular filtering

解决方案

yum erase podman buildah

再次安装


安装成功

2.docker环境实现Nginx

1.启动docker

systemctl start docker

2.查看转发

cat /proc/sys/net/ipv4/ip_forward

如果显示不符为1则需要手动设为1

echo 1 > /proc/sys/net/ipv4/ip_forward

3.查看docker版本

docker version

4.修改docker默认配置文件

vim /etc/docker/daemon.json
添加的内容
{
  "registry-mirrors": ["https://eu5rxjvf.mirror.aliyuncs.com"]
}

systemctl daemon-reload  #启动配置
systemctl restart docker  #重启docker服务

5.查看配置结果

docker init

6.搜索Nginx源

docker search nginx

7.导入Nginx环境

 docker pull nginx #默认最高版本

8.查看当前docker环境

docker images

9.启动容器

docker run -d --name nginx01 -p 80:80 nginx
534af161b4995c62fdd9f4d57fb4bb787a68cf040035ac96304473703230073d #容器id自己记住

10.查看容器

docker ps

11.访问测试

curl 127.0.0.1:80

12.进入容器修改配置

docker exec -it 534 /bin/bash
#534是之前容器id的前三位，不用写全