docker服务编排--docker-compose

根据哔哩哔哩视频【docker入门2】实战~如何组织一个多容器项目docker-compose进行学习

利用网站https://labs.play-with-docker.com/进行测试

第一步，安装nginx镜像

# 拉取nginx镜像
docker pull nginx
# 运行nginx容器
docker run -d -p80:80 --name mynginx nginx 
#容器ID
87702c4c192061036d731df8f533a82f20b972284b650a850adec3aba9580342
# 查看运行中的容器
docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                NAMES
87702c4c1920        nginx               "nginx -g 'daemon of…"   24 seconds ago      Up 23 seconds       0.0.0.0:80->80/tcp   mynginx 
# 在容器中进行交互操作
docker exec -it mynginx /bin/bash
# 查看容器IP地址
cat /etc/hosts

127.0.0.1	localhost
::1	localhost ip6-localhost ip6-loopback
fe00::0	ip6-localnet
ff00::0	ip6-mcastprefix
ff02::1	ip6-allnodes
ff02::2	ip6-allrouters
172.17.0.2	87702c4c1920

第二步：安装最小化Linux镜像alpine

# 拉取alpine镜像
docker pull alpine
# 安装curl
apk add curl
# curl nginx容器
curl 172.17.0.2

<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
         35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>

另外一种方式 --link方式

#后台运行alpine,并将mynginx容器绑定域名myng
docker run -dit --link mynginx:myng alpine   
825d4b3d221238bda2f29411fcae6d72fafb97d5002986660aa8c3b7cc501d99
# 安装curl
apk add curl

fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
(1/4) Installing ca-certificates (20191127-r1)
(2/4) Installing nghttp2-libs (1.40.0-r0)
(3/4) Installing libcurl (7.67.0-r0)
(4/4) Installing curl (7.67.0-r0)
Executing busybox-1.31.1-r9.trigger
Executing ca-certificates-20191127-r1.trigger
OK: 7 MiB in 18 packages
# curl nginx镜像
curl myng

<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
         35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>

# 原理，增加了172.17.0.2      myng d2d78de2ad2f
cat /etc/hosts
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.2      myng d2d78de2ad2f
172.17.0.3      9688a42fec94

docker-compose方式

/Users/doubledumbao/docker-demo/compose-demo目录下，新建html目录，添加index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>hello world nginx</title>
</head>
<body>
    <h1>hello world nginx!!!</h1>
</body>
</html>

/Users/doubledumbao/docker-demo/compose-demo/html目录下，添加test.php

<!DOCTYPE html>
<html>
<body>

<?php
echo "Hello World PHP!!!";
?>

</body>
</html>

/Users/doubledumbao/docker-demo/compose-demo/html目录下，添加mysql.php

<?php
$servername = "mysql";
$username = "root";
$password = "123456";
 
// 创建连接
$conn = new mysqli($servername, $username, $password);
 
// 检测连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
} 
echo "connected success !!!!!";
?>

/Users/doubledumbao/docker-demo/compose-demo目录下，新建conf目录

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   /usr/share/nginx/html;
            index  index.html index.htm;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        # location ~ .php$ {
        #    proxy_pass   http://127.0.0.1;
        # }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ .php$ {
           fastcgi_pass   php:9000;
           fastcgi_index  index.php;
           fastcgi_param  SCRIPT_FILENAME  /var/www/html/$fastcgi_script_name;
           include        fastcgi_params;
        }

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

/Users/doubledumbao/docker-demo/compose-demo目录下，添加docker-compose.yml

version: '3'
services: 
    nginx:
        image: nginx:alpine
        ports: 
        - 80:80
        volumes: 
        - /Users/doubledumbao/docker-demo/compose-demo/html:/usr/share/nginx/html
        - /Users/doubledumbao/docker-demo/compose-demo/conf/nginx.conf:/etc/nginx/nginx.conf
    php:
        image: devilbox/php-fpm:5.2-work-0.89
        volumes: 
        - /Users/doubledumbao/docker-demo/compose-demo/html:/var/www/html
    mysql:
        image: mysql:5.6
        environment: 
        - MYSQL_ROOT_PASSWORD=123456

启动docker-compose

docker-compose up

打开浏览器，查看效果

# 查看nginx配置效果
http://localhost
# 查看php配置效果
http://localhost/test.php
# 查看mysql配置效果
http://localhost/mysql.php

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原文地址：https://www.cnblogs.com/zhaoran8775/p/12852915.html