Nginx安装与负载均衡配置

Nginx安装与负载均衡配置

1、CentOS下需要的依赖包

yum install gcc-c++ -y yum install pcre pcre-devel -y  yum install zlib zlib-devel -y  yum install openssl openssl-devel  -y 

2、下载nginx源码

wget http://nginx.org/download/nginx-1.13.1.tar.gzwget https://bitbucket.org/nginx-goodies/nginx-sticky-module-ng/get/08a395c66e42.zipwget https://codeload.github.com/yaoweibin/nginx_upstream_check_module/zip/master

解压三个文件可得到

nginx-1.13.1
nginx-goodies-nginx-sticky
nginx_upstream_check_module-master

3、编译并安装nginx

./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module  --add-module=../nginx-goodies-nginx-sticky --add-module=../nginx_upstream_check_module-master

指定安装的目录，及依赖的组件源码

编译时出现异常

ngx_http_sticky_misc.c: In function 「ngx_http_sticky_misc_md5」:ngx_http_sticky_misc.c:152:15: ERROR：「MD5_DIGEST_LENGTH」 undeclared (first use in this function)   u_char hash[MD5_DIGEST_LENGTH];

解决方式就是修改在你下载解压缩之后的sticky模块文件夹中的ngx_http_sticky_misc.c文件
将这两个模块 <openssl/sha.h> and<openssl/md5.h>包含到文件ngx_http_sticky_misc.c

#include <nginx.h>#include <ngx_config.h>#include <ngx_core.h>#include <ngx_http.h>#include <ngx_md5.h>#include <ngx_sha1.h>#include <openssl/sha.h>#include <openssl/md5.h>#include "ngx_http_sticky_misc.h"

安装

make && make install

4、启动nginx

/usr/local/nginx/sbin/nginx

停止

/usr/local/nginx/sbin -s stop

5、负载均衡的配置

vim conf/nginx.conf

worker_processes  1;events {    worker_connections  1024;}http {    include       mime.types;    default_type  application/octet-stream;    sendfile        on;    keepalive_timeout  65;    log_format  main  '$http_x_forwarded_for - $remote_user [$time_local] "$request" '               '$status $body_bytes_sent "$http_referer" '                '"$http_user_agent"  $request_time $remote_addr';        server    {       listen       80;       server_name  hadoop4.ganymede.com;       index  index.jsp index.html index.htm;       location /mdm    {        proxy_next_upstream http_502 http_504 error timeout invalid_header;        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_pass http://mdm_balance;    }    access_log  /data/logs/nginx/a_access.log main;    error_log   /data/logs/nginx/a_error.log;    }    upstream mdm_balance{     sticky;     server   hadoop4:8086 weight=1 max_fails=2 fail_timeout=150s;     server   hadoop5:8086 weight=2 max_fails=2 fail_timeout=150s;    }}

6、修改配置后reload服务

/usr/local/nginx/sbin/nginx -t -c /usr/local/nginx/conf/nginx.conf/usr/local/nginx/sbin/nginx -s reload -c /usr/local/nginx/conf/nginx.conf