keepalived源码安装及主备配置

243eqd

keepavlied起初专门为LVS设计的，专门用来监控LVS集群系统中各个服务节点的状态，后来加入VRRP功能，因此除了配合LVS服务外，也可以作为其他服务（nginx，haproxy）的高可用软件。

keepalived服务两大用途：healthcheck 健康检查（针对RS） 、failover 高可用故障转移（主备）

keepalived的安装，主和备都需要安装

和LVS安装一样，最好也先给内核路径做一个软连接到/usr/src/linux

1 2 3 4 5

[iyunv@localhost ~]# ln -s /usr/src/kernels/2.6.32-573.8.1.el6.i686/ /usr/src/linux [iyunv@localhost ~]# cd /usr/local/src/ [iyunv@localhost src]# wget [iyunv@localhost src]# tar xf keepalived-1.1.19.tar.gz [iyunv@localhost src]# cd keepalived-1.1.19 [iyunv@localhost keepalived-1.1.19]# ./configure

configure执行成功的结果：有3个Yes；支持IPVS框架，IPVS的同步支持，VRRP的框架支持；
Keepalived configuration
------------------------
Keepalived version : 1.1.19
Compiler : gcc
Compiler flags : -g -O2
Extra Lib : -lpopt -lssl -lcrypto
Use IPVS Framework : Yes
IPVS sync daemon support : Yes
Use VRRP Framework : Yes
Use Debug flags : No

1 2	[iyunv@localhost keepalived-1.1.19]# make [iyunv@localhost keepalived-1.1.19]# make install

配置keepalived

1 2 3 4 5 6

[iyunv@localhost keepalived-1.1.19]# cp /usr/local/etc/rc.d/init.d/keepalived /etc/init.d/ [iyunv@localhost keepalived-1.1.19]# cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/ [iyunv@localhost keepalived-1.1.19]# mkdir /etc/keepalived -p [iyunv@localhost keepalived-1.1.19]# cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/ [iyunv@localhost keepalived-1.1.19]# cp /usr/local/sbin/keepalived /usr/sbin/ [iyunv@localhost keepalived-1.1.19]# /etc/init.d/keepalived start

主MASTER、备backup上配置文件：/etc/keepalived/keepalived.conf

主master配置：

1 2 3 4 5 6 7 8 9 10 11 12 13 14

vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 51 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.20.100/24 } }

备 backup 的配置:

1 2 3 4 5 6 7 8 9 10 11 12 13 14

vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.20.100/24 } }

主、备启动keepalived，主绑定VIP地址，主停止keepalived服务，备机马上接管VIP；