Extra Packages for Enterprise Linux (EPEL)
#———————————————————————
# Example configuration for a possible web application. See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.3/doc/configuration.txt
#
#———————————————————————
#———————————————————————
# Global settings
#———————————————————————
global
log 127.0.0.1 local2
chroot /var/lib/haproxy #安装目录
pidfile /var/run/haproxy.pid
maxconn 4000 #最大连接数
user nobody
group nobody
daemon #守护进程运行
#———————————————————————
# common defaults that all the ‘listen’ and ‘backend’ sections will
# use if not designated in their block
#———————————————————————
defaults
mode http #7层,默认的模式mode {tcp|http|health},tcp是4层,http是7层
log global
option dontlognull #来防止记录 Alteo(4层负载均衡)发出的健康检测,如果一个 session 交互没有数据,这个 session就不会被记录
option httpclose #主动关闭http通道,HA-Proxy不支持keep-alive模式
option httplog #http 日志格式
option forwardfor #后端服务器需要获得客户端的真实IP,将从Http Header中获得客户端IP
option redispatch #serverId对应的服务器挂掉后,强制定向到其他健康的服务器
timeout connect 10000 # default 10 second time out if a backend is not found
timeout client 300000 #客户端超时(毫秒)
timeout server 300000 #服务器超时(毫秒)
maxconn 60000 #最大连接数
retries 3
#———————————————————————
# main frontend which proxys to the backends
#———————————————————————
frontend main *:80
# 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
mode http
default_backend app
#———————————————————————
# static backend for serving up images, stylesheets and such
#———————————————————————
#backend static
#balance roundrobin
#server static 127.0.0.1:4331 check
#———————————————————————
# round robin balancing between the various backends
#———————————————————————
backend app
balance roundrobin
server app1 192.168.1.101:80 cookie 1 check inter 2000 rise 3 fall 3
server app2 192.168.1.102:80 cookie 1 check inter 2000 rise 3 fall 3
#———————————————————————
# check status
#———————————————————————
listen secure #自定义一个frontend,也可以放在listen或者backend中
bind *:8080 #监听的ip端口号
stats enable #开关
stats uri /admin?admin #访问的uri ip:8080/admin?admin
stats auth admin:admin #认证用户名和密码
stats hide-version #隐藏HAProxy的版本号
stats refresh 5s #统计页面自动刷新时间
多后端配置文件:
global
log 127.0.0.1 local0 notice
maxconn 20480
ulimit-n 65535
uid nobody
gid nobody
daemon
nbproc 2
pidfile /var/run/haproxy.pid
defaults
log global
mode http
option httplog
option httpclose
option forwardfor
option dontlognull
option redispatch
retries 3
balance roundrobin
timeout connect 5000
timeout client 50000
timeout server 50000
##frontend settings ######
frontend test
bind 192.168.1.241:80
mode http
#capture request header Host len 32
#log-format %hr\ %r\ %st\ %B\ %Tr
#http-request add-header X-Req %[env(USER)]
option httpclose
option httplog
option dontlognull
option forwardfor
default_backend x.yxpai.com
##setting ACLs ##
#acl ua_moz hdr_reg(User-Agent) -i ^iphone.*
acl host_x hdr_reg(host) -i ^(x.yxpai.com)$
#http-request deny if host_x
##applying ACLs#####
use_backend x.yxpai.com if host_x
#use_backend moz if ua_moz
#redirect code 301 prefix http://192.168.1.64 if ua_moz
###testing how to modify HTTP response HEADER##
##setting up backends###
backend x.yxpai.com
option httplog
option httpclose
option forwardfor
http-response set-header X-Server-Port %[dst_port]
#http-response set-header X-Handled-By %[env(USER)]
http-response add-header X-Cached %[env(HOSTNAME)]
http-response replace-value Server ^nginx.*$ Apache2
http-response replace-header X-Powered-By ^.*$ PHP
http-response del-header X-Powered-By
http-response del-header Server
#http-response replace-value Cache-control ^public$ private
cookie PHPSESSID insert indirect nocache ##setting session sticky
server app1 192.168.1.102:80 maxconn 3000 cookie app1 check inter 5s rise 3 fall 3
backend moz
balance roundrobin
option httplog
option httpclose
option forwardfor
server app1 192.168.1.101:80 maxconn 3000 cookie app1 check inter 5s rise 3 fall 3
# option httpchk GET /index.html
listen status *:8080
stats enable
stats uri /stats
stats auth admin:123456
#stats admin if TRUE
stats realm (Haproxy\statistic)
global_defs {
router_id LVA_DEVEL
}
vrrp_script chk_http_port {
script “/etc/keepalived/check_haproxy.sh”
interval 2
weight 2
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_http_port
}
virtual_ipaddress {
192.168.1.20
}
}
#!/bin/bash
A=`ps -C haproxy –no-header | wc -l`
if [ $A -eq 0 ];then
/usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg
echo “haproxy start”
sleep 3
if [ `ps -C haproxy –no-header | wc -l` -eq 0 ];then
/etc/init.d/keepalived stop
echo “keepalived stop”
fi
fi
3、BACKUP上安装haproxy,步骤就不详细介绍,和MASTER上面一样的。
#———————————————————————
#
# http://haproxy.1wt.eu/download/1.3/doc/configuration.txt
#
#———————————————————————
#———————————————————————
# Global settings
#———————————————————————
global
pidfile /var/run/haproxy.pid
maxconn 4000
user nobody
group nobody
daemon
#———————————————————————
# common defaults that all the ‘listen’ and ‘backend’ sections will
# use if not designated in their block
#———————————————————————
defaults
mode http
log global
option dontlognull
option httpclose
option httplog
option forwardfor
option redispatch
maxconn 60000
retries 3
#———————————————————————
# main frontend which proxys to the backends
#———————————————————————
frontend main *:80
# 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
mode http
default_backend app
#———————————————————————
# static backend for serving up images, stylesheets and such
#———————————————————————
#backend static
#balance roundrobin
#server static 127.0.0.1:4331 check
#———————————————————————
# round robin balancing between the various backends
#———————————————————————
backend app
balance roundrobin
server app1 192.168.1.101:80 cookie 1 check inter 2000 rise 3 fall 3
server app2 192.168.1.102:80 cookie 1 check inter 2000 rise 3 fall 3
#———————————————————————
# check status
#———————————————————————
listen secure #自定义一个frontend,也可以放在listen或者backend中
bind *:8080 #监听的ip端口号
stats enable #开关
stats uri /admin?admin #访问的uri ip:8080/admin?admin
stats auth admin:admin #认证用户名和密码
stats hide-version #隐藏HAProxy的版本号
stats refresh 5s #统计页面自动刷新时间
4、BACKUP上安装keepalived,步骤也不多介绍,keepalived.conf文件内容就两处有变化,红色字体标出
! Configuration File for keepalived
global_defs {
router_id LVA_DEVEL
}
vrrp_script chk_http_port {
script “/etc/keepalived/check_haproxy.sh”
interval 2
weight 2
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_http_port
}
virtual_ipaddress {
192.168.1.20
}
}
A=`ip a | grep 192.168.1.20 | wc -l`
B=`ps -ef | grep haproxy | grep -v grep | awk ‘{print $2}’`
if [ $A -gt 0 ];then
/usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg
else
kill -9 $B
fi
5、两台负载机器我就不多介绍了,用的是系统自带的nginx+PHP
主: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:98:cd:c0 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.10/24 brd 192.168.1.255 scope global eth0
inet 192.168.1.20/32 scope global eth0
inet6 fe80::20c:29ff:fe98:cdc0/64 scope link
valid_lft forever preferred_lft forever
link/ether 00:0c:29:a6:0c:7e brd ff:ff:ff:ff:ff:ff
inet 192.168.1.11/24 brd 255.255.255.254 scope global eth0
inet6 fe80::20c:29ff:fea6:c7e/64 scope link
valid_lft forever preferred_lft forever
3.停掉主的keepalived,备机马上接管服务
备: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:a6:0c:7e brd ff:ff:ff:ff:ff:ff
inet 192.168.1.11/24 brd 255.255.255.254 scope global eth0
inet 192.168.1.20/32 scope global eth0
inet6 fe80::20c:29ff:fea6:c7e/64 scope link
valid_lft forever preferred_lft forever
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