nginx容器之间代理

反向代理端

[root@server01 nginx]# ll
总用量 4
-rw-r--r-- 1 root root 1383 1月  19 13:23 default.conf
[root@server01 nginx]# cat default.conf 
upstream node1 {
        server 192.168.0.221:82;
        server 192.168.0.221;
}


server {
    listen  80;
    server_name  192.168.0.220;
    access_log  /var/log/nginx/forward.access.log  main;
    error_log   /var/log/nginx/forward.error.log  warn;
    proxy_set_header   Host             $host;
    proxy_set_header   X-Real-IP        $remote_addr;
    proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    client_max_body_size       10m;    #允许客户端请求的最大单文件字节数
    client_body_buffer_size    128k;    #缓冲区代理缓冲用户端请求的最大字节数
    proxy_connect_timeout      300;    #nginx跟后端服务器连接超时时间(代理连接超时)
    proxy_send_timeout         300;    #后端服务器数据回传时间(代理发送超时)
    proxy_read_timeout         300;    #连接成功后，后端服务器响应时间(代理接收超时)
    proxy_buffer_size          4k;        #设置代理服务器（nginx）保存用户头信息的缓冲区大小
    proxy_buffers              4 32k;    #proxy_buffers缓冲区，网页平均在32k以下的话，这样设置
    proxy_busy_buffers_size    64k;    #高负荷下缓冲大小（proxy_buffers*2）
    proxy_temp_file_write_size 64k;    #设定缓存文件夹大小，大于这个值，将从upstream服务器传
    location / {
        proxy_pass   http://node1;

}
}

启动容器

docker run -it --name nginx -p 80:80 -v /nginx/default.conf:/etc/nginx/conf.d/default.conf -d nginx:latest

后端服务器

启动两个nginx容器
docker run -it --name nginx1 -p 82:80 -d nginx:latest
docker run -it --name nginx -p 80:80 -d nginx1:latest

网页内容

[root@server02 nginx]# docker exec -it nginx /bin/bash
root@bb26273d260b:/# cat /usr/share/nginx/html/index.html 
port test
192.168.0.221
root@bb26273d260b:/# exit
[root@server02 nginx]# docker exec -it nginx1 /bin/bash
root@f0d8409e7e14:/# cat /usr/share/nginx/html/index.html
123456
root@f0d8409e7e14:/# exit
exit

[root@server02 nginx]# docker ps -a
CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS             PORTS                NAMES
f0d8409e7e14   nginx:latest   "/docker-entrypoint.…"   27 minutes ago   Up 27 minutes      0.0.0.0:82->80/tcp   nginx1
bb26273d260b   nginx:latest   "/docker-entrypoint.…"   2 hours ago      Up About an hour   0.0.0.0:80->80/tcp   nginx

测试

[root@server01 nginx]# curl localhost
123456
[root@server01 nginx]# curl localhost
port test
192.168.0.221
[root@server01 nginx]# curl localhost
123456
[root@server01 nginx]# curl localhost
port test
192.168.0.221
[root@server01 nginx]# curl localhost
123456
[root@server01 nginx]# curl localhost
port test
192.168.0.221

单机上两个nginx容器代理

先启动两个nginx容器
docker run -it --name nginx2 -p 82:80 -d nginx1:latest
docker run -it --name nginx2 -p 83:80 -d nginx2:latest

[root@server01 nginx]# docker ps -a
CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS          PORTS                NAMES
9885bdc24a54   nginx:latest   "/docker-entrypoint.…"   10 minutes ago   Up 10 minutes   0.0.0.0:83->80/tcp   nginx2
e02eb72e071a   nginx:latest   "/docker-entrypoint.…"   19 minutes ago   Up 19 minutes   0.0.0.0:82->80/tcp   nginx1

docker run -it --name nginx -p 80:80 --link nginx1 --link nginx2  -v /nginx/default.conf:/etc/nginx/conf.d/default.conf -d nginx:latest

[root@server01 nginx]# cat default.conf 
upstream node1 {
        server nginx1:80;
        server nginx2:80;
}


server {
    listen  80;
    server_name  192.168.0.220;
    access_log  /var/log/nginx/forward.access.log  main;
    error_log   /var/log/nginx/forward.error.log  warn;
    proxy_set_header   Host             $host;
    proxy_set_header   X-Real-IP        $remote_addr;
    proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    location / {
        proxy_pass   http://node1;

}
}
[root@server01 nginx]# 

不同主机间nginx容器代理

192.168.0.221启动三个nginx容器

docker run -it --name nginx5 -p 85:80 -d nginx:latest
docker run -it --name nginx1 -p 82:80 -d nginx:latest
docker run -it --name nginx -p 80:80 -d nginx:latest

写好每个nginx容器的index.html，内容不要相同。

192.168.0.220启动一个容器

[root@server01 nginx]# cat default.conf 
upstream node1 {
        server 192.168.0.221:85;
        server 192.168.0.221:80;
        server 192.168.0.221:82;
}


server {
    listen  80;
    server_name  192.168.0.220;
    access_log  /var/log/nginx/forward.access.log  main;
    error_log   /var/log/nginx/forward.error.log  warn;
    proxy_set_header   Host             $host;
    proxy_set_header   X-Real-IP        $remote_addr;
    proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    location / {
        proxy_pass   http://node1;

}
}

启动容器

docker run -it --name nginx -p 80:80  -v /nginx/default.conf:/etc/nginx/conf.d/default.conf -d nginx:latest

测试：

[root@server01 nginx]# curl localhost
123456
[root@server01 nginx]# curl localhost
jdfhskdjfh
[root@server01 nginx]# curl localhost
port test
192.168.0.221
[root@server01 nginx]# curl localhost
123456
[root@server01 nginx]# curl localhost
jdfhskdjfh
[root@server01 nginx]# curl localhost
port test
192.168.0.221