nginx主动健康检查功能实现

# 下载
wget https://nginx.org/download/nginx-1.20.2.tar.gz
# 解压
tar zxvf nginx-1.20.2.tar.gz

# 解压
tar zxvf nginx_upstream_check_module-0.4.0.tar.gz

# 安装patch，如果已经安装不需要执行这一步
yum install patch
# 切换到你解压好的nginx文件夹下
cd /root/judith/nginx-1.20.2
# 打补丁
patch -p1 < /root/judith/patch_1.20.1.patch

# 切换到你解压好的nginx文件夹下
cd nginx-1.20.2
# --prefix: 配置nginx的安装路径
# --add-module: 是你下载解压后的nginx_upstream_check_module-0.4.0路径
./configure --prefix=/usr/local/nginx20 --add-module=/root/judith/nginx_upstream_check_module-0.4.0

make
make install

# 检查nginx配置文件是否正确
/usr/local/nginx20/sbin/nginx -t
# 启动nginx server
/usr/local/nginx20/sbin/nginx
# 访问nginx server
curl localhost:80

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    upstream httpget {
        server 192.168.91.133:80;
        check interval=3000 rise=2 fall=5 timeout=1000 type=http;
        check_http_send "HEAD / HTTP/1.0\r\n\r\n";
        check_http_expect_alive http_2xx http_3xx;
    }
    server {
        listen       80;
        server_name  localhost;
        location / {
            proxy_pass http://httpget;
            root   html;
        }
         location /status {
            check_status;
            access_log   off;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}

# 检查nginx配置文件是否正确
/usr/local/nginx20/sbin/nginx -t
# 重启nginx server
/usr/local/nginx20/sbin/nginx -s reload