Haproxy的使用
1.安装haproxy
yum install -y haproxy
2.配置haproxy
vim /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /var/lib/haproxy uid 99 gid 99 daemon nbproc 1 pidfile /var/run/haproxy.pid log 127.0.0.1 local6 info defaults option http-keep-alive option forwardfor maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen stats mode http bind 0.0.0.0:9999 stats enable log global stats uri /haproxy-status stats auth haadmin:123456 #frontend web_port frontend web_port bind 0.0.0.0:80 mode http option httplog log global option forwardfor ###################ACL Setting########################## acl pc hdr_dom(host) -i www.elk.com acl mobile hdr_dom(host) -i m.elk.com ###################USE ACL############################## use_backend pc_host if pc use_backend mobile_host if mobile ######################################################## backend pc_host mode http option httplog balance source server web1 10.0.0.53:8081 check inter 2000 rise 3 fall 2 weight 1 backend mobile_host mode http option httplog balance source server web1 10.0.0.53:8080 check inter 2000 rise 3 fall 2 weight 1
3.配置说明
[root@web01 ~]# vim /etc/haproxy/haproxy.cfg #全局配置 global #最大并发 maxconn 100000 #安全机制 chroot /var/lib/haproxy #指定启动的用户和组 uid 99 gid 99 #守护进程 daemon #haproxy的进程数 nbproc 1 #指定pid文件 pidfile /var/run/haproxy.pid #指定日志级别 log 127.0.0.1 local6 info #默认配置 defaults #开启长连接 option http-keep-alive #获取用户真实IP option forwardfor #最大连接数 maxconn 100000 #支持http协议 mode http #设置连接超时时间 timeout connect 300000ms timeout client 300000ms timeout server 300000ms #监控状态 listen status #支持http mode http #监听端口 bind 0.0.0.0:9999 #启动 stats enable #日志级别 log global #访问uri地址 stats uri /haproxy-status #状态页用户名和密码 stats auth haadmin:123456 #frontend web_port frontend web_port bind 0.0.0.0:80 mode http option httplog log global option forwardfor ###################ACL Setting########################## acl nginx hdr_dom(host) -i www.nginx.com # 设置匹配规则 acl tomcat hdr_dom(host) -i www.tomcat.com ###################USE ACL############################## use_backend nginx_host if nginx # 如果是www.nginx.com就访问nginx_host use_backend tomcat_host if tomcat ######################################################## backend nginx_host mode http option httplog balance source #代理到后端的主机 server web01 10.0.0.7:8081 check inter 2000 rise 3 fall 2 weight 1 backend tomcat_host mode http option httplog balance source server web01 10.0.0.7:8080 check inter 2000 rise 3 fall 2 weight 1
4.最简单的配置
[root@node1 ~]# cat /etc/haproxy/haproxy.cfg global log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon stats socket /var/lib/haproxy/stats 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 frontend main *:80 # 设置服务启动的端口 acl url_static path_beg -i /static /images /javascript /stylesheets acl url_static path_end -i .jpg .gif .png .css .js use_backend static if url_static default_backend ceph_node # 如果是直接访问80端口 backend static # 这个接了上面的if url_static balance roundrobin server static 127.0.0.1:4331 check backend ceph_node balance roundrobin # 设置到后端的算法 server node1 192.168.1.2:81 check # 代理的后端主机 server node2 192.168.1.3:81 check