server {
    listen       80;
    listen  [::]:80;
    server_name  192.168.110.237;
    add_header 'Access-Control-Allow-Origin' '*';
    root /var/fetalbrain_detection/;
    location /admin/ {  # 瀏覽器訪問路由admin進這個路徑下的index.html中
        root   /usr/share/nginx/html;
    }
    location /ai_images/ {  # 瀏覽器訪問路由
        root   /usr/share/nginx/html;
    }
    location /api/ {  # 前端訪問后端ip端口
        proxy_pass http://192.168.110.237:8001;
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

upstream backend_servers {
    server 192.168.110.237:18001 weight=3;
    server 192.168.110.128:18001;
}

upstream backend_servers01 {
    server 192.168.110.237:18002;
    server 192.168.110.128:18002;
}

server {
    listen       80;
    listen  [::]:80;
    server_name  192.168.110.128;
    add_header 'Access-Control-Allow-Origin' '*';
    root /var/fetalbrain_detection/;

    location /admin/ {  # 瀏覽器訪問admin路由
        root   /usr/share/nginx/html;
    }
    location /ai_images/ {  # 瀏覽器訪問admin路由
        root   /usr/share/nginx/html;
    }
    location /user/ {  # 前端訪問user后端服務的ip和端口
        proxy_pass http://backend_servers;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
    location /data/ {  # 前端訪問data后端服務的ip和端口
        proxy_pass http://backend_servers01;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    error_page   500 502 503 504  /50x.html;
    location = / {
       root   /www;
       index  index.html index.html;
    }
}

http {
    upstream backend_servers {
        ip_hash;
        server backend1.example.com;
        server backend2.example.com;
    }

    server {
        listen 80;
        server_name example.com;

        location / {
            proxy_pass http://backend_servers;
        }
    }
}

http {
    upstream backend_servers {
        least_conn;
        server backend1.example.com;
        server backend2.example.com;
    }

    server {
        listen 80;
        server_name example.com;

        location / {
            proxy_pass http://backend_servers;
        }
    }
}

http {
    upstream backend_servers {
        server backend1.example.com weight=3;
        server backend2.example.com weight=2;
        server backend3.example.com weight=1;
    }

    server {
        listen 80;
        server_name example.com;

        location / {
            proxy_pass http://backend_servers;
        }
    }
}

yum install curl gcc openssl-devel libnl3-devel net-snmp-devel

apt-get install curl gcc libssl-dev libnl-3-dev libnl-genl-3-dev libsnmp-dev

tar -xzvf keepalived-2.2.8.tar.gz

cd keepalived-2.2.8

./configure --prefix=/usr/local/keepalived-2.2.8 --sysconf=/etc

make

sudo make install

global_defs {
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 1
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.100
    }
}

global_defs {
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state BACKUP
    interface wlp2s0
    virtual_router_id 2
    priority 90
    advert_int 1
    nopreemt
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.100
    }
}

#!/bin/bash

# 容器名稱
container_name="keep-nginx"

# 檢查容器狀態(tài)
container_status=$(docker inspect -f '{{.State.Status}}' $container_name 2>/dev/null)

if [ -z "$container_status" ]; then
    echo "容器 $container_name 不存在! 關(guān)閉keepalived "
    systemctl stop keepalived
    echo "Keepalived 已關(guān)閉。"
    exit 1
fi

echo "容器 $container_name 當前狀態(tài)為: $container_status"

# 判斷容器是否處于 up 狀態(tài)
if [ "$container_status" != "running" ]; then
    echo "容器不是 up 狀態(tài)，將關(guān)閉 Keepalived。"
    systemctl stop keepalived
    # 停止 Keepalived 服務
    echo "Keepalived 已關(guān)閉。"
else
    echo "容器處于 up 狀態(tài)，無需關(guān)閉 Keepalived。"
fi

chmod +x nginx_check.sh

global_defs {
   router_id LVS_DEVEL
}
vrrp_script chk_nginx {
   script "/etc/keepalived/nginx_check.sh"
   interval 2
   weight 0
}
vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 1
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.100
    }
    track_script {
        chk_nginx
   }
}

global_defs {
   router_id LVS_DEVEL
}
vrrp_script chk_nginx {
   script "/etc/keepalived/nginx_check.sh"
   interval 2
   weight 0
}
vrrp_instance VI_1 {
    state BACKUP
    interface wlp2s0
    virtual_router_id 2
    priority 90
    advert_int 1
    nopreemt
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.100
    }
    track_script {
        chk_nginx
   }
}