nginx健康检查部署

nginx健康检查部署
关键点:
1. 安装nginx时,添加nginx_upstream_check_module
2. 在nginx.conf 加入upstream节点
3. 在server {} 中的 加入check_status;

详细部署内容如下:
yum list installed | grep nginx
yum remove -y nginx.x86_64
yum -y install patch
yum -y install pcre-devel openssl openssl-devel

cd /home/elsearch/app/
下载安装nginx
wget http://nginx.org/download/nginx-1.16.0.tar.gz
tar -zxvf nginx-1.16.0.tar.gz
mv /home/elsearch/app/nginx-1.16.0 /usr/local/
cd /usr/local/nginx-1.16.0/

下载nginx_upstream_check_module模块
wget https://codeload.github.com/yaoweibin/nginx_upstream_check_module/zip/master
unzip master
mv nginx_upstream_check_module-master nginx_http_upstream_check_module

导入前提示：
If you use nginx-1.2.1 or nginx-1.3.0, the nginx upstream round robin
module changed greatly. You should use the patch named
'check_1.2.1.patch'.
If you use nginx-1.2.2+ or nginx-1.3.1+, It added the upstream
least_conn module. You should use the patch named 'check_1.2.2+.patch'.
If you use nginx-1.2.6+ or nginx-1.3.9+, It adjusted the round robin
module. You should use the patch named 'check_1.2.6+.patch'.
If you use nginx-1.5.12+, You should use the patch named
'check_1.5.12+.patch'.
If you use nginx-1.7.2+, You should use the patch named
'check_1.7.2+.patch'.

sed -i -e 's/1.6.2/2.0/g' -e 's/nginx\//LXS/g' -e 's/"NGINX"/"LXS"/g' src/core/nginx.h
patch -p1 < ./nginx_http_upstream_check_module/check_1.12.1+.patch
------成功：输入信息，如果出现FAIL表示错误------
patching file src/http/modules/ngx_http_upstream_hash_module.c
Hunk #2 succeeded at 241 (offset 3 lines).
Hunk #3 succeeded at 571 (offset 22 lines).
patching file src/http/modules/ngx_http_upstream_ip_hash_module.c
Hunk #2 succeeded at 211 (offset 3 lines).
patching file src/http/modules/ngx_http_upstream_least_conn_module.c
patching file src/http/ngx_http_upstream_round_robin.c
patching file src/http/ngx_http_upstream_round_robin.h
------

./configure --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --with-http_stub_status_module --with-http_ssl_module --with-file-aio --with-http_realip_module --add-module=/usr/local/nginx-1.16.0/nginx_http_upstream_check_module/
make & make install
//查看版本
nginx -v
nginx version: nginx/1.16.0
//查看版本以及已安装的模块
nginx -V

vim /etc/nginx/nginx.conf  //***在http节点下，加入upstream节点***
worker_processes  1;
pid        /var/run/nginx.pid;
events {
worker_connections  1024;
}

http {
include       mime.types;
default_type  application/octet-stream;
#log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
#                  '$status $body_bytes_sent "$http_referer" '
#                  '"$http_user_agent" "$http_x_forwarded_for"';

#access_log  logs/access.log  main;

sendfile        on;
#tcp_nopush     on;

#keepalive_timeout  0;
keepalive_timeout  65;

upstream Elastic-Head {
server    192.168.1.78:9100;
check interval=3000 rise=2 fall=5 timeout=1000;
}

upstream Elastic-master {
server    192.168.1.78:9200;
server    192.168.1.78:9201;
check interval=3000 rise=2 fall=5 timeout=1000;
}

upstream kibana {
server    192.168.1.78:5601;
check interval=3000 rise=2 fall=5 timeout=1000;
}

server {
listen 80;
server_name kibana;
#auth_basic "Restricted Access";
#auth_basic_user_file /etc/nginx/kibana-user;

location /ServStatus {
check_status;
access_log on;
}

location / {
proxy_pass http://192.168.1.78:5601;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}

nginx端口映射
server {
  listen  20050;
  server_name localhost;
   # 20050转发到10050端口
  location / {
      proxy_pass http://172.16.120.23:10050;
  }
}

检查配置文件路径
cd /usr/local/nginx/sbin
nginx -t -c /usr/local/nginx/conf/nginx.conf 或
./nginx -t

首先利用配置文件启动nginx:
nginx -c /usr/local/nginx/conf/nginx.conf
/usr/local/nginx/sbin/nginx -s reload

listen db_proxy_239 
bind 0.0.0.0:30050
maxconn 100
mode tcp
option tcplog
option mysql-check user haproxy_check
server yqy-rdb_238 172.16.120.239:10050

nginx -c /etc/nginx/nginx.conf