【高可用HA】Nginx (1) —— Mac下配置Nginx Http负载均衡(Load Balancer)之101实例

时间:2022-03-22 09:28:26

【高可用HA】Nginx (1) —— Mac下配置Nginx Http负载均衡(Load Balancer)之101实例


nginx版本: nginx-1.9.8

参考来源:

nginx.org

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csdn:Nginx+Tomcat负载均衡配置

iteye:图文解说:Nginx+tomcat配置集群负载均衡

安装

首先

从nginx官方网站下载

编译配置

  1. 执行命令

     $ ./configure --prefix=/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a --with-http_ssl_module

    执行结果末尾几行

     ...
    nginx error log file: "/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs/error.log"
    nginx http access log file: "/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs/access.log"
    nginx http client request body temporary files: "client_body_temp"
    nginx http proxy temporary files: "proxy_temp"
    nginx http fastcgi temporary files: "fastcgi_temp"
    nginx http uwsgi temporary files: "uwsgi_temp"
    nginx http scgi temporary files: "scgi_temp"
  2. 执行命令

     $ make

    执行结果末尾几行

     ...
    objs/src/http/modules/ngx_http_upstream_zone_module.o \
    objs/ngx_modules.o \
    -lpcre -lssl -lcrypto -lz
    /Library/Developer/CommandLineTools/usr/bin/make -f objs/Makefile manpage
    sed -e "s|%%PREFIX%%|/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a|" \
    -e "s|%%PID_PATH%%|/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs/nginx.pid|" \
    -e "s|%%CONF_PATH%%|/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/conf/nginx.conf|" \
    -e "s|%%ERROR_LOG_PATH%%|/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs/error.log|" \
    < man/nginx.8 > objs/nginx.8
  3. 执行命令

     $ sudo make install

    执行结果末尾几行

     test -d '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs' 		|| mkdir -p '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs'
    test -d '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs' || mkdir -p '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs'
    test -d '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/html' || cp -R html '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a'
    test -d '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs' || mkdir -p '/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs'
  4. 修改服务器启动配置

    • 将端口修改成85(与其他文章中httpd的端口区分),并修改location配置Proxy

      server {

      listen 85;

      server_name localhost;

        #charset koi8-r;
      
        #access_log  logs/host.access.log  main;
      
        # location / {
      # root html;
      # index index.html index.htm;
      # } location / {
      proxy_connect_timeout 3;
      proxy_send_timeout 30;
      proxy_read_timeout 30;
      proxy_pass http://localhost;
      }

      ...

    • 增加转发路由的配置,并指向之前配好的两台Tomcat服务器

        upstream localhost {
      #根据ip计算将请求分配各那个后端tomcat,许多人误认为可以解决session问题,其实并不能。
      #同一机器在多网情况下,路由切换,ip可能不同
      #ip_hash;
      server localhost:8081;
      server localhost:8082;
      }

运行

执行命令

$ ./sbin/nginx

提示错误

nginx: [alert] could not open error log file: open() "/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/logs/error.log" failed (13: Permission denied)
2015/12/09 16:26:55 [emerg] 16550#0: mkdir() "/Users/Richard/Documents/Dev/servers/cluster/nginx/node-a/client_body_temp" failed (13: Permission denied)
*这是因为nginx没有相应的权限

运行命令授权或者以sudo运行

$ sudo ./sbin/nginx

启动

$ sudo ./sbin/nginx -s stop

测试

用浏览器访问localhost:85,页面中会交替出现"Node-A!!"和"Node-B!!"

【高可用HA】Nginx (1) —— Mac下配置Nginx Http负载均衡(Load Balancer)之101实例

结束