关于nginx:nginx-安装后端节点健康检查组件-nginxupstreamcheckmodule

大家都晓得，前段nginx做反代，如果后端服务器宕掉的话，nginx是不能把这台realserver提出upstream的，所以还会有申请转发到后端的这台realserver下面去，尽管nginx能够在localtion中启用proxy_next_upstream来解决返回给用户的谬误页面，办法在：http://www.linuxyan.com/web-s...

• 首先去这里下载nginx的模块https://github.com/yaoweibin/...
• 上面是nginx打上模块补丁的装置

$ wget http://nginx.org/download/nginx-1.16.1.tar.gz’$ tar -xzvf nginx-1.16.1.tar.gz$ cd nginx-1.16.1/$ patch -p1 < /path/to/nginx_http_upstream_check_module/check.patch注：因nginx版本更新，1.2以上版本的nginx，补丁为check_1.16.1+.patch$ ./configure --add-module=/data/nginx_upstream_check_module-master --prefix=/data/nginx --with-http_stub_status_module --with-http_ssl_module --with-file-aio --with-http_realip_module --add-module=/data/brotli/ngx_brotli --add-module=/data/echo-nginx-module-0.61$ make$ mv /data/nginx/sbin/nginx /tpm/$ mv obj/nginx /data/nginx/sbin/

之后在nginx.conf配置文件外面的upstream退出健康检查，如下：

[root@81-nginx-test xxxx]# cat up.conf upstream ser{ip_hash;server  192.168.0.47:8090  max_fails=2 fail_timeout=10s;server  192.168.0.48:8090  max_fails=2 fail_timeout=10s;check interval=5000 rise=1 fall=5 timeout=4000;keepalive 20000;}

这里上面加的这句话我解释下，interval检测间隔时间，单位为毫秒，rsie申请2次失常的话，标记此realserver的状态为up，fall示意申请5次都失败的状况下，标记此realserver的状态为down，timeout为超时工夫，单位为毫秒。 在server段外面能够退出查看realserver状态的页面

[root@81-nginx-test xxxx]# cat a.conf ####uat-skpay-backmanage.xxxx.comserver {    listen 80;    server_name back.xxxx.com;    add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";    #add_header X-Frame-Options SAMEORIGIN;    index index.html;    access_log /data/ser.log; location / {        if ($request_method !~ ^(GET|POST|PUT|DELETE|HEAD|OPTIONS)$) {            return  403;        }        #proxy_pass http://service-backmanage_uat;        #proxy_pass http://192.168.0.48:8090/backmanage/;        proxy_pass http://ser;        proxy_redirect off;        proxy_set_header Host $http_host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        proxy_connect_timeout 90;        proxy_send_timeout 90;        proxy_read_timeout 90;        proxy_buffer_size 16k;        proxy_buffering on;        proxy_buffers 4 32k;        proxy_busy_buffers_size 64k;        proxy_max_temp_file_size 1024m;    }        location /nstatus {                  check_status;                  access_log off;                  allow all;        }}####uat-skpay-backmanage.xxxx.comserver {    listen 80;    server_name dev-back.xxxx.com;    add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";    #add_header X-Frame-Options SAMEORIGIN;    index index.html;    access_log /data/ser.log;        location / {        if ($request_method !~ ^(GET|POST|PUT|DELETE|HEAD|OPTIONS)$) {            return  403;        }        #proxy_pass http://service-backmanage_uat;        #proxy_pass http://192.168.0.48:8090/backmanage/;        proxy_pass http://ser;        proxy_redirect off;        proxy_set_header Host $http_host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        proxy_connect_timeout 90;        proxy_send_timeout 90;        proxy_read_timeout 90;        proxy_buffer_size 16k;        proxy_buffering on;        proxy_buffers 4 32k;        proxy_busy_buffers_size 64k;        proxy_max_temp_file_size 1024m;    }        location /nstatus {                  check_status;                  access_log off;                  allow all;        }}