Haproxy使用

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