Docker Compose

1034字约3分钟

2024-08-11

Docker 开源项目，负责实现对 Docker 容器集群的快速编排

安装 docker compose

先安装并启动 docker

方式一：命令行安装

# 添加 epel 源
yum install -y epel-release

# 安装docker-compose 
yum install -y docker-compose

# 查看 docker-compose 版本，需要注意的是 2023 年 1 月起，官方取消了 docker-compose --version 这条查看版本的命令
docker compose version
或
docker-compose --version

# bash 命令补齐，如果失效可以换成ip的方式请求
curl -L https://raw.githubusercontent.com/docker/compose/1.8.0/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose
或
curl -L http://199.232.68.133/docker/compose/1.8.0/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose

方式二：本地下载上传服务器

如果方式一下载不行，可以直接通过本站下载

也可以访问官网 https://github.com/docker/compose/releases 下载

下载后上传至/usr/local/bin目录下，修改二进制包名

mv docker-compose-linux-x86_64 docker-compose

将可执行权限应用于二进制文件

sudo chmod +x /usr/local/bin/docker-compose

查看安装版本

docker-compose -v
或者
docker-compose --version

bash 命令补齐

curl -L https://raw.githubusercontent.com/docker/compose/1.8.0/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose

# 如果失效可以换成ip的方式请求
curl -L http://199.232.68.133/docker/compose/1.8.0/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose

卸载docker-compose，直接移除二进制包即可

sudo rm /usr/local/bin/docker-compose

常用命令

启动

docker-compose up -d

重启

docker-compose restart

关闭

docker-compose stop

安装 nginx

# 启动一个临时的 ngxin 容器
docker run --rm -d --name=tempnginx nginx
# 创建需要的目录
mkdir -p /usr/local/nginx/html
mkdir -p /usr/local/nginx/logs
# 创建 /nginx/conf 目录并进入
mkdir -p /usr/local/nginx/conf
cd /usr/loacl/nginx
# 拷贝nginx.conf配置文件
docker cp tempnginx:/etc/nginx/nginx.conf ./conf/
# 拷贝conf.d文件夹
docker cp tempnginx:/etc/nginx/conf.d/ ./conf/
# 停止临时容器
docker stop tempnginx

解释一下为啥复制docker里面文件的路径是/etc/nginx，直接通过命令进入容器里面内部看文件目录

[root@VM-0-15-centos nginx]# docker ps
CONTAINER ID   IMAGE     COMMAND                  CREATED         STATUS         PORTS     NAMES
d1f22c40873d   nginx     "/docker-entrypoint.…"   4 minutes ago   Up 4 minutes   80/tcp    tempnginx
[root@VM-0-15-centos nginx]# docker exec -it d1f22c40873d /bin/bash
root@d1f22c40873d:/# ls -l
total 80
drwxr-xr-x   2 root root 4096 Oct 11 00:00 bin
drwxr-xr-x   2 root root 4096 Oct  3 09:00 boot
drwxr-xr-x   5 root root  340 Nov  6 02:38 dev
drwxr-xr-x   1 root root 4096 Oct 12 02:03 docker-entrypoint.d
-rwxrwxr-x   1 root root 1202 Oct 12 02:03 docker-entrypoint.sh
drwxr-xr-x   1 root root 4096 Nov  6 02:38 etc
drwxr-xr-x   2 root root 4096 Oct  3 09:00 home
drwxr-xr-x   1 root root 4096 Oct 12 02:03 lib
drwxr-xr-x   2 root root 4096 Oct 11 00:00 lib64
drwxr-xr-x   2 root root 4096 Oct 11 00:00 media
drwxr-xr-x   2 root root 4096 Oct 11 00:00 mnt
drwxr-xr-x   2 root root 4096 Oct 11 00:00 opt
dr-xr-xr-x 113 root root    0 Nov  6 02:38 proc
drwx------   1 root root 4096 Nov  6 02:39 root
drwxr-xr-x   1 root root 4096 Nov  6 02:38 run
drwxr-xr-x   2 root root 4096 Oct 11 00:00 sbin
drwxr-xr-x   2 root root 4096 Oct 11 00:00 srv
dr-xr-xr-x  13 root root    0 Nov  6 02:38 sys
drwxrwxrwt   1 root root 4096 Oct 12 02:03 tmp
drwxr-xr-x   1 root root 4096 Oct 11 00:00 usr
drwxr-xr-x   1 root root 4096 Oct 11 00:00 var
root@d1f22c40873d:/# cd /etc/nginx/
root@d1f22c40873d:/etc/nginx# ls -l
total 32
drwxr-xr-x 1 root root 4096 Nov  6 02:38 conf.d
-rw-r--r-- 1 root root 1007 Sep  7 15:21 fastcgi_params
-rw-r--r-- 1 root root 5290 Sep  7 15:21 mime.types
lrwxrwxrwx 1 root root   22 Sep  7 15:38 modules -> /usr/lib/nginx/modules
-rw-r--r-- 1 root root  648 Sep  7 15:38 nginx.conf
-rw-r--r-- 1 root root  636 Sep  7 15:21 scgi_params
-rw-r--r-- 1 root root  664 Sep  7 15:21 uwsgi_params

docker-compose.yaml配置信息如下

version: '3'
services:
  nginx:
    # 容器名称
    container_name: nginx
    # 默认nginx:latest
    image: nginx
    # 自启动
    restart: always
    # 宿主机端口80:容器默认端口80
    ports:
      - 80:80
    # 文件映射
    volumes:
      - ./conf/nginx.conf:/etc/nginx/nginx.conf
      - ./conf/conf.d/:/etc/nginx/conf.d/
      - ./html/:/usr/share/nginx/html/
      - ./logs/:/var/log/nginx/
    # 时区设置
    environment:
      - TZ=Asia/Shanghai

启动nginx，在docker-compose.yaml的目录执行命令

docker-compose up -d

部署静态资源文件的nginx配置，需要在docker-compose.yaml中增加静态资源挂载目录

server {
    listen       80;
    server_name  localhost;

    location / {
        # 宿主机与容器挂载的静态资源目录
        root  /usr/local/blog-front;
        index  index.html index.htm;
        try_files $uri $uri/ /index.html;
    }
}

安装 Mysql8.0

version: '3.1'
services:
  mysql8.0:
    image: mysql:8.0.21
    restart: always
    environment:
      TZ: Asia/Shanghai
      MYSQL_ROOT_PASSWORD: 123456
    command:
      --default-authentication-plugin=mysql_native_password
      --character-set-server=utf8mb4
      --collation-server=utf8mb4_general_ci
      --explicit_defaults_for_timestamp=true
      --lower_case_table_names=1
      --max_allowed_packet=128M
    ports:
      - 3306:3306
    volumes:
      - ./data:/var/lib/mysql