centos docker ngnix

在CentOS上利用Docker来运行Nginx是一个常见的做法，因为它提供了快速、一致的环境配置方式，而且可以很容易地扩展。下面是怎样通过Docker来运行Nginx的步骤：
1. 安装Docker

起首，确保你的CentOS体系上已经安装了Docker。如果还没有安装，你可以通过以下命令来安装Docker：

1. [/code] [code]

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sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install -y docker-ce docker-ce-cli containerd.io

centos 8
注如果安装报如下错误：

1. Error:
2. Problem 1: problem with installed package podman-1.0.5-1.gitf604175.module_el8.0.0+194+ac560166.x86_64
3.   - package podman-1.0.5-1.gitf604175.module_el8.0.0+194+ac560166.x86_64 requires runc, but none of the providers can be installed
4.   - package podman-2.2.1-7.module_el8.3.0+699+d61d9c41.x86_64 requires runc >= 1.0.0-57, but none of the providers can be installed
5.   - package containerd.io-1.4.6-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
6.   - package containerd.io-1.4.6-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
7.   - package containerd.io-1.4.6-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
8.   - package containerd.io-1.4.6-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
9.   - cannot install the best candidate for the job
10.   - package runc-1.0.0-56.rc5.dev.git2abd837.module_el8.3.0+569+1bada2e4.x86_64 is filtered out by modular filtering
11.   - package runc-1.0.0-64.rc10.module_el8.3.0+479+69e2ae26.x86_64 is filtered out by modular filtering
12. Problem 2: problem with installed package buildah-1.5-3.gite94b4f9.module_el8.0.0+58+91b614e7.x86_64
13.   - package buildah-1.5-3.gite94b4f9.module_el8.0.0+58+91b614e7.x86_64 requires runc >= 1.0.0-26, but none of the providers can be installed
14.   - package buildah-1.16.7-4.module_el8.3.0+699+d61d9c41.x86_64 requires runc >= 1.0.0-26, but none of the providers can be installed
15.   - package docker-ce-3:20.10.6-3.el8.x86_64 requires containerd.io >= 1.4.1, but none of the providers can be installed
16.   - package containerd.io-1.4.3-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
17.   - package containerd.io-1.4.3-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
18.   - package containerd.io-1.4.3-3.2.el8.x86_64 conflicts with runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
19.   - package containerd.io-1.4.3-3.2.el8.x86_64 obsoletes runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
20.   - package containerd.io-1.4.4-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
21.   - package containerd.io-1.4.4-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
22.   - package containerd.io-1.4.6-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
23.   - package containerd.io-1.4.6-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-70.rc92.module_el8.3.0+699+d61d9c41.x86_64
24.   - cannot install the best candidate for the job
25.   - package containerd.io-1.4.3-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
26.   - package containerd.io-1.4.3-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
27.   - package containerd.io-1.4.3-3.2.el8.x86_64 conflicts with runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
28.   - package containerd.io-1.4.3-3.2.el8.x86_64 obsoletes runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
29.   - package containerd.io-1.4.4-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
30.   - package containerd.io-1.4.4-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
31.   - package containerd.io-1.4.6-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
32.   - package containerd.io-1.4.6-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-55.rc5.dev.git2abd837.module_el8.0.0+58+91b614e7.x86_64
33.   - package runc-1.0.0-56.rc5.dev.git2abd837.module_el8.3.0+569+1bada2e4.x86_64 is filtered out by modular filtering
34.   - package runc-1.0.0-64.rc10.module_el8.3.0+479+69e2ae26.x86_64 is filtered out by modular filtering
35. (try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

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必要实行如下命令， 再重新实行安装命令

1. sudo yum erase podman buildah

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sudo systemctl start docker
sudo systemctl enable docker
2. 运行Nginx容器

安装完Docker后，你可以通过以下命令来运行一个Nginx容器：

1. [/code] [code]docker pull nginx

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如果报错

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<EOF
{
  "registry-mirrors": [
    "https://docker.m.daocloud.io",
    "https://hub-mirror.c.163.com",
    "https://mirror.ccs.tencentyun.com",
    "https://noohub.ru"

  ]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

1. vim /etc/docker/daemon.json

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2.重启docker服务
重启历程

1. sudo systemctl daemon-reload

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重启服务

1. sudo systemctl restart docker

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然后再拉取，就成功了！

docker pull hub-mirror.c.163.com/library/nginx:latest


docker run -itd --name nginx -p 8088:80 nginx:latest

docker run --name my-nginx -p 8080:80 -d nginx
docker run --name my-nginx -p 8088:80 -d nginx
这个命令做了几件事：

• --name my-nginx：给容器命名为my-nginx。
  
• -p 8080:80：将容器的80端口映射到宿主机的8080端口。如许，你可以通过访问宿主机的8080端口来访问Nginx。
  
• -d：以后台模式运行容器。
  
• nginx：利用官方的Nginx镜像。
  

3. 验证Nginx是否运行

你可以通过访问宿主机的8080端口来验证Nginx是否正常运行：

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curl http://localhost:8080
你应该会看到Nginx的默认欢迎页面。
4. 自定义Nginx配置

如果你必要自定义Nginx的配置，你可以创建一个自定义的nginx.conf文件，并将其挂载到容器中。例如：

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mkdir /path/to/nginx-conf
echo 'server { listen 80; server_name localhost; location / { root /usr/share/nginx/html; index index.html index.htm; } }' > /path/to/nginx-conf/nginx.conf
docker run --name my-nginx -p 8080:80 -v /path/to/nginx-conf:/etc/nginx/conf.d -d nginx
这里，-v /path/to/nginx-conf:/etc/nginx/conf.d将宿主机的/path/to/nginx-conf目录挂载到容器的/etc/nginx/conf.d目录，如许容器就会利用这个目录下的nginx.conf文件作为其配置文件。
5. 管理Nginx容器

一旦你的Nginx容器运行起来，你可以利用以下命令来管理它：

• 制止容器：docker stop my-nginx
  
• 启动容器：docker start my-nginx
  
• 重启容器：docker restart my-nginx
  
• 查看容器日记：docker logs my-nginx
  

通过这些步骤，你可以在CentOS上利用Docker轻松地运行和管理Nginx。

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