到官网下载你需要的版本
https://www.keepalived.org/download.html
#安装依赖包和环境配置（此步骤也可忽略）
yum install kernel-devel -y
ln -s /usr/src/kernels/2.6.32-754.23.1.el6.x86_64/ /usr/src/linux
#进入你安装包的位置
[root@1 ~]#cd /usr/local/src/
[root@1 src]#tar zxvf keepalived-1.2.16.tar.gz
[root@1 src]#cd keepalived-1.2.16
[root@1 keepalived-1.2.16]# ls
AUTHOR ChangeLog configure.in COPYING genhash install-sh keepalived.spec.in Makefile.in TODO
bin configure CONTRIBUTORS doc INSTALL keepalived lib README VERSION
[root@1 keepalived-1.2.16]# ./configure #下面有常见报错解决方法
######################################################################################
Keepalived configuration
------------------------
Keepalived version : 1.2.16
Compiler : gcc
Compiler flags : -g -O2
Extra Lib : -lssl -lcrypto -lcrypt
Use IPVS Framework : Yes
IPVS sync daemon support : Yes
IPVS use libnl : No
fwmark socket support : Yes
Use VRRP Framework : Yes
Use VRRP VMAC : Yes
SNMP support : No
SHA1 support : No
Use Debug flags : No
######################################################################################
[root@1 keepalived-1.2.16]# make
######################################################################################
Make complete
make[1]: Leaving directory `/usr/local/src/keepalived-1.2.16/genhash'
Make complete
######################################################################################
[root@1 keepalived-1.2.16]# make install
######################################################################################
install -d /usr/local/share/man/man1
install -m 644 ../doc/man/man1/genhash.1 /usr/local/share/man/man1
make[1]: Leaving directory `/usr/local/src/keepalived-1.2.16/genhash'
######################################################################################
#配置服务启动
[root@1 keepalived-1.2.16]# cp /usr/local/etc/rc.d/init.d/keepalived /etc/init.d/ #生成启动脚本命令
[root@1 keepalived-1.2.16]# cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/ #配置启动脚本的参数
[root@1 keepalived-1.2.16]# mkdir /etc/keepalived
[root@1 keepalived-1.2.16]# cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/ #把keepalived.conf模板拷贝到/etc/keepalived下
[root@1 keepalived-1.2.16]# cp /usr/local/sbin/keepalived /usr/bin/
#配置文件
#首次操作前建议进行备份“cp keepalived.conf keepalived.conf.ori”
[root@1 keepalived-1.2.16]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived global_defs {#全局配置 notification_email { #服务挂掉后收件人邮箱 acassen@firewall.loc failover@firewall.loc sysadmin@firewall.loc } notification_email_from Alexandre.Cassen@firewall.loc #服务挂掉后发件人邮箱 smtp_server 192.168.200.1 #邮件服务器地址 smtp_connect_timeout 30 #超时时间 router_id LVS_01 #keepalived服务ID（同网段不能重复） } vrrp_instance VI_1 { #vrrp实例 state MASTER #服务器状态（只是个标识，主要通过优先级配置决定主备角色） interface eth0 #通信端口 virtual_router_id 51 #vrrd实例ID priority 150 #优先级（如果主为100那么备机建议配置为50；小50） advert_int 1 #心跳消息发送间隔1秒 authentication { #服务密钥对 auth_type PASS auth_pass 1111 } virtual_ipaddress { #VIP地址 192.168.200.16/24 } }
#启动服务
[root@1 keepalived-1.2.16]# /etc/init.d/keepalived start
Starting keepalived: [ OK ]
[root@1 keepalived-1.2.16]# ps -ef| grep keepalived
root 13328 1 0 15:21 ? 00:00:00 keepalived -D
root 13329 13328 0 15:21 ? 00:00:00 keepalived -D
root 13330 13328 0 15:21 ? 00:00:00 keepalived -D
root 13336 11773 0 15:22 pts/1 00:00:00 grep keepalived
"""
#通过ifconfig无法查看到VIP
#因为ifconfig是通过“ifconfig eth0:0 192.168.1.10 up/down”添加的ip
#而ip addr是通过“ip addr add/del 192.168.1.20/24 dev eth0”添加的ip
"""
[root@1 keepalived]# ifconfig eth0 Link encap:Ethernet HWaddr 00:00:20:D3:DF:CE inet addr:192.168.200.115 Bcast:192.168.200.255 Mask:255.255.255.0 inet6 addr: fe80::200:290f:fed3:dfce/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:21084605 errors:0 dropped:0 overruns:0 frame:0 TX packets:1601067 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3250709524 (3.0 GiB) TX bytes:496090441 (473.3 MiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1340000 errors:0 dropped:0 overruns:0 frame:0 TX packets:1340000 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:148470250 (141.5 MiB) TX bytes:148470250 (141.5 MiB) [root@1 keepalived]# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 00:00:20:d3:df:ce brd ff:ff:ff:ff:ff:ff inet 192.168.200.115/24 brd 192.168.200.255 scope global eth0 inet 192.168.200.116/24 scope global secondary eth0 inet6 fe80::200:290f:fed3:dfce/64 scope link valid_lft forever preferred_lft forever
#将配置文件拷贝到对端
[root@1 keepalived]# scp keepalived.conf 192.168.200.117:/etc/keepalived/
root@192.168.200.117's password:
keepalived.conf 100% 542 0.5KB/s 00:00
#登录到备机
[root@2 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived global_defs { notification_email { acassen@firewall.loc failover@firewall.loc sysadmin@firewall.loc } notification_email_from Alexandre.Cassen@firewall.loc smtp_server 192.168.200.1 smtp_connect_timeout 30 router_id LVS_02 } 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 { 192.168.200.116/24 } }
#启动服务
[root@2 keepalived-1.2.16]# /etc/init.d/keepalived start
Starting keepalived: [ OK ]
#此时备机不应该有VIP，如果有那就产生裂脑了
#模拟故障
#主服务停掉keepalived
[root@1 keepalived]# /etc/init.d/keepalived stop
Stopping keepalived: [ OK ]
#查看从服务IP信息
[root@2 keepalived]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:0c:20:d0:cd:0a brd ff:ff:ff:ff:ff:ff
inet 192.168.200.117/24 brd 192.168.1.255 scope global eth0
inet 192.168.200.116/24 scope global secondary eth0
inet6 fe80::200:29ff:fedd:cd0a/64 scope link
valid_lft forever preferred_lft forever
#主服务器keepalived恢复后VIP会被掠夺回来
#常见报错：
checking openssl/ssl.h usability... no
checking openssl/ssl.h presence... no
checking for openssl/ssl.h... no
configure: error:
!!! OpenSSL is not properly installed on your system. !!!
!!! Can not include OpenSSL headers files. !!!
[root@1 keepalived-1.2.16]# yum -y install openssl-devel