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 搭建keepalived+haproxy双主高可用负载均衡系统

== 基础知识普及==
常用高可用软件   keepalived heartbeat 
常用负载均衡器    nginx  haproxy LVS 

常用方案为 
haproxy +Keepalived    或者    nginx  +Keepalived

我们这里用 haproxy +Keepalived  

==搭建环境描述==
vip  192.168.30.88

haproxy-server(haproxy+keepalived) 192.168.30.75
backup-haproxy(haproxy+keepalived) 192.168.30.76

webapp1  192.168.30.71
webapp2  192.168.30.72

os CentOS Linux release 7.3.1611

==软件安装==

=== haproxy===
[[Haproxy安装和配置]]

=== keepalived===
[[keepalived安装和配置]]

=== 在master上配置HAProxy和Keepalved ===
master HAProxy 和  Backup HAProxy 配置是一样的  见  [[Haproxy安装和配置]]

=== 在Backup上配置HAProxy和Keepalved ===

master Keepalved 和  Backup Keepalved 配置 基本一样 

其中 master Keepalved 为  priority 100 ; backup  Keepalved 为  priority 90, 还有 如果配置的是不抢占模式 ，还要 在bakc 上去掉
nopreempt选项
 


==测试==
192.168.30.88 www.zb.com 
192.168.30.88 static.zb.com







== 问题及解决过程 ==
<pre>
 这个是比较 好用的参考 谢谢作者了
keepalived+haproxy双主高可用负载均衡
http://nmshuishui.blog.51cto.com/1850554/1405486

#./configure --sysconf=/etc  --with-kernel-dir=/usr/src/kernels/3.10.0-514.el7.x86_64

make 

usr/src/kernels/3.10.0-514.el7.x86_64/include/linux/linkage.h:7:25: 致命错误：asm/linkage.h：没有那个文件或目录
 #include <asm/linkage.h>
                         ^
编译中断。
make[2]: *** [smtp.o] 错误 1
make[2]: 离开目录“/root/keepalived-1.2.12/keepalived/core”
make[1]: *** [all] 错误 1
make[1]: 离开目录“/root/keepalived-1.2.12/keepalived”
make: *** [all] 错误 2

#4 centos7
./configure --sysconf=/etc  --with-kernel-dir=/usr/src/kernels/3.10.0-514.el7.x86_64
make -j3

                 from ../include/smtp.h:34,
                 from smtp.c:27:
/usr/src/kernels/3.10.0-514.el7.x86_64/include/linux/linkage.h:7:25: 致命错误：asm/linkage.h：没有那个文件或目录
 #include <asm/linkage.h>
                         ^
编译中断。
make[2]: *** [smtp.o] 错误 1
make[2]: 离开目录“/root/keepalived-1.2.12/keepalived/core”
make[1]: *** [all] 错误 1
make[1]: 离开目录“/root/keepalived-1.2.12/keepalived”
make: *** [all] 错误 2

今天 没带 -with-kernel-dir 因为是lvs才一定要用上这个 

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Load_Balancer_Administration/s2-lvs-keepalived-haproxy-VSA.html
</pre>
==参考== 


[http://7424593.blog.51cto.com/7414593/1764640 HAProxy负载均衡与keepalived搭建高可用负载均衡web（Nginx/PHP/Tomcat）集群]

[http://www.cnblogs.com/dkblog/archive/2011/07/06/2098949.html haproxy+keepalived实现高可用负载均衡]

haproxy配置详解
http://leejia.blog.51cto.com/4356849/1421882


负载均衡工具haproxy安装，配置，使用
http://blog.51yip.com/server/868.html

keepalived+haproxy双主高可用负载均衡
http://nmshuishui.blog.51cto.com/1850554/1405486



apache+Keepalived实现站点高可用
http://blog.linuxchina.net/?p=2942

keepalived 搭建LVS高可用 Cluste
http://blog.linuxchina.net/?p=1741


Nginx+Keepalived实现站点高可用
http://seanlook.com/2015/05/18/nginx-keepalived-ha/

[http://ixdba.blog.51cto.com/2895551/1788995  企业集群平台架构实现与应用实战（HAproxy+keepalived篇）]


[http://blog.csdn.net/zhu_tianwei/article/details/41117323 负载均衡-haproxy安装配置]


Keepalived+Nginx实现高可用Web负载均衡
http://www.jianshu.com/p/da26df4f7d60

nginx+keepalived高可用及双主模式
http://noodle.blog.51cto.com/2925423/1794734

Nginx+Keepalived实现站点高可用
https://segmentfault.com/a/1190000002881132

Wed负载均衡高可用之Nginx+keepalived
http://luozlinux.blog.51cto.com/1388902/1227004


烂泥：高负载均衡学习haproxy之配置文件详解
http://www.ilanni.com/?p=10016


[[category:ops]]