centos 7 安装HAproxy四层TCP负载均衡配置及测试

haproxy负载均衡166.110.110.100
后端服务器1 166.110.110.1
后端服务器2 166.110.110.2

--------------------------------------------------centos 7 处理----------------------------------------------------  关闭SELinux  vi /etc/selinux/config  #SELINUX=enforcing #注释掉  #SELINUXTYPE=targeted #注释掉  SELINUX=disabled #增加  :wq!  #保存退出  setenforce 0 #使配置立即生效    关闭centos 7的防火墙(仅在测试的时候)  systemctl stop firewalld.service  systemctl disable firewalld.service  

--------------------------------------------------haproxy安装----------------------------------------------------  yum install wget gcc -y && wget -c --no-check-certificate https://src.fedoraproject.org/repo/pkgs/haproxy/haproxy-1.8.12.tar.gz && tar -xvf haproxy-1.8.12.tar.gz && cd haproxy-1.8.12    groupadd haproxy #添加haproxy组  useradd -g haproxy haproxy -s /bin/false #创建nginx运行账户haproxy并加入到haproxy组，不允许haproxy  --------------------------------------------------haproxy配置----------------------------------------------------  vi /etc/haproxy/haproxy.cfg    修改为以下配置  #---------------------------------------------------------------------  # Example configuration for a possible web application.  See the  # full configuration options online.  #  #   http://haproxy.1wt.eu/download/1.4/doc/configuration.txt  #  #---------------------------------------------------------------------    #---------------------------------------------------------------------  # Global settings  #---------------------------------------------------------------------  global      # to have these messages end up in /var/log/haproxy.log you will      # need to:      #      # 1) configure syslog to accept network log events.  This is done      #    by adding the '-r' option to the SYSLOGD_OPTIONS in      #    /etc/sysconfig/syslog      #      # 2) configure local2 events to go to the /var/log/haproxy.log      #   file. A line like the following can be added to      #   /etc/sysconfig/syslog      #      #    local2.*                       /var/log/haproxy.log      #      log         127.0.0.1 local2        chroot      /var/lib/haproxy      pidfile     /var/run/haproxy.pid      maxconn     4000      user        haproxy      group       haproxy      daemon        # turn on stats unix socket      stats socket /var/lib/haproxy/stats    #---------------------------------------------------------------------  # common defaults that all the 'listen' and 'backend' sections will  # use if not designated in their block  #---------------------------------------------------------------------  defaults      mode                    http      log                     global      option                  httplog      option                  dontlognull      option http-server-close      option forwardfor       except 127.0.0.0/8      option                  redispatch      retries                 3      timeout http-request    10s      timeout queue           1m      timeout connect         10s      timeout client          1m      timeout server          1m      timeout http-keep-alive 10s      timeout check           10s      maxconn                 3000    #---------------------------------------------------------------------  # main frontend which proxys to the backends  #---------------------------------------------------------------------  listen admin_stats          bind 127.0.0.1:1080               #监听端口          mode http                       #http的7层模式          option httplog                  #采用http日志格式          #log 127.0.0.1 local0 err          maxconn 10          stats refresh 30s               #统计页面自动刷新时间          stats uri /stats                #统计页面url          stats realm Proxy Haproxy  #统计页面密码框上提示文本          stats auth admin:admin          #统计页面用户名和密码设置          stats hide-version              #隐藏统计页面上HAProxy的版本信息      listen test1          bind 0.0.0.0:80          mode tcp          balance leastconn          #maxconn 40000          #log 127.0.0.1 local0 debug          server s1 166.110.110.1:80          server s2 166.110.110.2:80  ------------------------------------------------------------------------------------------------------  centos7下haproxy启动停止重启重载状态等控制命令  systemctl (start, stop, restart, try-restart, reload, force-reload, status) haproxy.service    haproxy web监控信息166.110.110.100为haproxy安装所在服务器IP  http://166.110.110.100:1080/status  -----------------------------后端安装lighttpd 作为测试用----------------------------------------------  systemctl stop firewalld.service  systemctl disable firewalld.service  关闭SELinux  vi /etc/selinux/config  将SELINUX=enforcing改为SELINUX=disabled    安装  yum install -y epel-release gcc gcc-c++ autoconf automake  zlib zlib-devel pcre-devel zip unzip libtool bzip2-* && yum install -y lighttpd && systemctl enable lighttpd    编辑配置文件关闭ipv6  vi /etc/lighttpd/lighttpd.conf  注释掉ipv6    启动服务器  systemctl restart lighttpd.service    默认目录及首页  /var/www/lighttpd/index.html    对两个index.html进行修改进行区别  后端第一个服务器  echo "<h4>this is upstream server 1" >> /var/www/lighttpd/index.html    后端第二个服务器  echo "<h4>this is upstream server 2" >> /var/www/lighttpd/index.html  

访问haproxy所在服务器IP或者解析的域名刷新试试

-----------------------------Haproxy 负载均衡的8种算法----------------------------------------  balance roundrobin # 轮询，软负载均衡基本都具备这种算法    balance static-rr # 根据权重，建议使用    balance leastconn # 最少连接者先处理，建议使用    balance source # 根据请求源IP，建议使用    balance uri # 根据请求的URI    balance url_param，# 根据请求的URl参数'balance url_param' requires an URL parameter name    balance hdr(name) # 根据HTTP请求头来锁定每一次HTTP请求    balance rdp-cookie(name) # 根据据cookie(name)来锁定并哈希每一次TCP请求  

原文出处：xiaohost -> http://xiaohost.com/2751.html