keepalived主备切换失败解决办法

2011年9月18日 | 标签:

在迁移haproxy负载的时候出现keepalived切换失败

具体故障现象如下：

1. 两台haproxy+keepalived启动完毕，第一次访问到主机(正常)
2. killall keepalived ，删除主机的keepalived，马上切换到备机(正常,可以通过ip addr查看虚IP是否生效)
3. keepalived -f /usr/local/etc/keepalived/keepalived.conf ,启动主机的keepalived,正常应该切换回主机(失败)，这时出现站点打不开的情况
4. 在备机上用ip addr 查看，虚IP还是显示在那里
5. ps -e | grep keepalived  #只有两个进程。正常情况下应该有3个keepalived的进程才对

解决keepalived只有两个进程的情况

只有两个进程,是因为当前的linux系统未指定内核位置

cd /usr/src/kernels #发现这个目录下没有文件yum install kernel -yyum install kernel-devel -yln -s /usr/src/kernels/2.6.18-274.3.1.el5-i686/ /usr/src/linux #创建链接文档

然后重新编译安装keepalived

刚开始编译的是keepalived-1.2.2版本，出现

/usr/include/stdint.h:41: error: conflicting types for ‘int64_t’/usr/src/linux/include/linux/types.h:126: error: previous declaration of ‘int64_t’ was here/usr/include/stdint.h:56: error: conflicting types for ‘uint64_t’/usr/src/linux/include/linux/types.h:124: error: previous declaration of ‘uint64_t’ was hereIn file included from /usr/include/stdlib.h:438,

等错误

不得解,后选择keepalived-1.1.9版本，编译不报错

安装后查看 ps -e|grep keepalived 有三个进程在跑

解决安装keepalived-1.2.2版本编译报错的问题

vim keepalived/libipvs-2.6/ip_vs.h把 #include <linux/types.h> 移动到 #include <sys/types.h> 的下面

关于keepalived的原理，可以看看http://www.mirror.lupaworld.com/home-space-uid-56821-do-blog-id-241652.html