标签：代理配置 errorlog 正向代理 www apache2.4 common eve eth cal
apache安装目录在/data/apache24，这里就不介绍apache的安装了。
一、反向代理配置
在/data/apache24/conf/extra下创建htttpd-proxy.conf文件
#开启反代理的必须模块
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule slotmem_shm_module modules/mod_slotmem_shm.so
LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so
LoadModule lbmethod_bytraffic_module modules/mod_lbmethod_bytraffic.so
LoadModule lbmethod_bybusyness_module modules/mod_lbmethod_bybusyness.so
#关闭正向代理
ProxyRequests Off
#设置集群组，mycluster名称可以随意取
<Proxy "balancer://mycluster">
BalancerMember http://192.168.1.222:8080
BalancerMember http://192.168.1.233:8080
</Proxy>
#使用集群组，mycluster名称需与上面配置相同
ProxyPass "/demo" "balancer://mycluster/"
ProxyPassReverse "/demo" "balancer://mycluster/"
修改/data/apache24/conf/httpd.conf中添加
Include conf/extra/htttpd-proxy.conf
这样重启apache后，当我们访问网站/demo时，会反向代理到222和233上的8080端口。
二、apache负载均衡管理界面
<Location "/balancer-manager">
SetHandler balancer-manager
order Deny,Allow
Deny from all
Allow from localhost
</Location>
访问网站/balancer-manager时，就可以看到apache自带的一个负载均衡管理界面。
三、虚拟主机上配置反向代理
<VirtualHost *:80>
DocumentRoot "/data/wwwroot/test"
ServerName www.test.com
ErrorLog "logs/www.test.com-error_log"
CustomLog "logs/www.test.com-access_log" common
#当我们访问www.test.com时，都会代理到mycluster集群中。
ProxyPass "/" "balancer://mycluster/"
ProxyPassReverse "/" "balancer://mycluster/"
</VirtualHost>
四、负载比例分配
loadfactor取值范围为1-100
ProxyRequests Off
<Proxy "balancer://mycluster">
BalancerMember http://192.168.1.222:8080 loadfactor=6
BalancerMember http://192.168.1.233:8080 loadfactor=4
BalancerMember http://192.168.1.244:8080 loadfactor=2
</Proxy>
ProxyPass "/" "balancer://mycluster/"
ProxyPassReverse "/" "balancer://mycluster/"
五、负载分配算法
lbmethod取值有：
lbmethod=byrequests 按照请求次数均衡(默认)
lbmethod=bytraffic 按照流量均衡
lbmethod=bybusyness 按照繁忙程度均衡(总是分配给活跃请求数最少的服务器)
ProxyRequests Off
<Proxy "balancer://mycluster">
BalancerMember http://192.168.1.222:8080 loadfactor=6
BalancerMember http://192.168.1.233:8080 loadfactor=4
BalancerMember http://192.168.1.244:8080 loadfactor=2
</Proxy>
ProxyPass "/" "balancer://mycluster/"
ProxyPassReverse "/" "balancer://mycluster/"
ProxySet lbmethod=bytraffic
五、热备份
请求总是流向222，一旦222挂掉， apache会检测到错误并把请求分流给233。apache会每隔几分钟检测一下222的状况，如果222恢复，就继续使用222。
ProxyRequests Off
<Proxy balancer://mycluster>
BalancerMember http://192.168.1.222:8080
BalancerMember http://192.168.1.233:8080 status=+H
</Proxy>
ProxyPass "/" "balancer://mycluster/"
ProxyPassReverse "/" "balancer://mycluster/"
标签：代理配置 errorlog 正向代理 www apache2.4 common eve eth cal
原文地址：http://www.cnblogs.com/jkko123/p/6426857.html
