nginx 1.14.0
描述：
nginx自带的upstream配置，如果后端挂了，接口会慢，原因不讲述，故接入第三方的自动检测与自动踢除模式
nginx_upstream_check_module模块：
*** 下载地址https://github.com/yaoweibin/nginx_upstream_check_module ***
wget 'http://nginx.org/download/nginx-1.14.0.tar.gz'
tar -xzvf nginx-1.14.0.tar.gz
cd nginx-1.14.0/
patch -p1 < /path/to/nginx_http_upstream_check_module/check_1.14.0+.patch
#./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_stub_status_module --with-http_v2_module --with-http_ssl_module --with-http_gzip_static_module --with-http_realip_module --with-http_flv_module --with-http_mp4_module --with-openssl=/opt/tools/openssl-1.0.2l/ --with-pcre-jit --with-ld-opt=-ljemalloc --with-debug --add-module=/opt/tools/nginx-module-vts-master/ --add-module=/opt/tools/nginx_upstream_check_module-master/ --add-module=/opt/tools/ngx_cache_purge-2.3/
#make
#mv objs/nginx /usr/local/nginx/sbin/nginx
#nginx -s reload
nginx配置例子
http {
upstream cluster {
# simple round-robin
server 192.168.0.1:80;
server 192.168.0.2:80;
check interval=5000 rise=1 fall=3 timeout=4000;
#check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello;
#check interval=3000 rise=2 fall=5 timeout=1000 type=http;
#check_http_send "HEAD / HTTP/1.0
";
#check_http_expect_alive http_2xx http_3xx;
}
server {
listen 80;
location / {
proxy_pass http://cluster;
}
location /check_status {
check_status;
access_log off;
allow SOME.IP.ADD.RESS;
deny all;
}
}
}