KeepAlived安装与配置
# ./configure --prefix=/usr/local/keepalived-1.2.9# make# make install
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? ? 安装keepalived的启动服务
cp /usr/local/keepalived-1.2.9/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/cp /usr/local/keepalived-1.2.9/etc/sysconfig/keepalived /etc/sysconfig/mkdir /etc/keepalivedcp /usr/local/keepalived-1.2.9/etc/keepalived/keepalived.conf /etc/keepalived/ln -s /usr/local/keepalived-1.2.9/sbin/keepalived /usr/sbin/service keepalived start设置随机器启动：chkconfig keepalived on
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三：配置keepalived（Master / Slave模式）
master配置
! Configuration File for keepalivedglobal_defs { notification_email { mircox@163.com } notification_email_from mircox@163.com smtp_server smtp.163.com smtp_connect_timeout 30 router_id LVS_DEVEL}vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.1.41 }}#其实这里是个增强。vrrp_instance VI_2 { state BACKUP interface eth0 virtual_router_id 52 priority 90 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.1.51 }}?
salve配置
! Configuration File for keepalivedglobal_defs { notification_email { mircox@163.com } notification_email_from mircox@163.com smtp_server smtp.163.com smtp_connect_timeout 30 router_id LVS_DEVEL}vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 90 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.1.51 }}vrrp_instance VI_2 { state MASTER interface eth0 virtual_router_id 52 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.1.51 }}?
附属conf的备注：
global_defs?{
???notification_email {
?????xxxxxx@sina.com???#设置报警邮件地址，可以设置多个，每行一个。需要开启sendmail服务。
???}
???notification_email_from?keepalived@localhost??#设置邮件的发送地址
???smtp_server 127.0.0.1?????????????????????????#设置SMTP Server地址
???smtp_connect_timeout 30???????????????????????#设置SMTP Server的超时时间
???router_id LVS_DEVEL??????????#表示运行Keepalived服务器的一个标识。发邮件时显示大邮件主题中的信息
}
vrrp_instance VI_1 {????????????#vrrp 实例定义部分
????state MASTER????????????????#指定Keepalived的角色，MASTER表示些主机是主服务器。BACKUP表示此主机是备用服务器?
????interface eth1??????????????#指定HA监测网络的接口
????virtual_router_id 51????????#虚拟路由标识，这个标识是一个数字，同一个vrrp实例使用唯一的标识，即同一个vrrp_instance下MASTER与BACKUP必须是一致的
????priority 50?????????????????#定义优先级，数字越大，优先级越高
????authentication {
????????auth_type PASS??????????#设置验证类型和密码，MASTER和BACKUP必须使用相同的密码才能正常通信
????????auth_pass 1111
????}
????virtual_ipaddress {????????#设置虚拟IP地址，可以设置多个虚拟IP地址，每行一个
???????192.168.100.250
????}
}
virtual_server 192.168.100.250 80 {???#设置虚拟服务器，需要指定虚拟IP地址和服务端口，IP与端口之间用空格隔开
????delay_loop 6?????????????????#设置运行情况检查时间，单位为秒
????lb_algo rr????????????????#设置负载调度算法，这里设置rr，即轮询算法
????lib_kind DR???????????????#设置LVS实现负载均衡机制，有NAT、TUN、DR三个模式可选
????persistence_timeout 60????#会话保持单位时间，单位是秒
????protocol TCP??????????????#指定转发协议类型，有TCP和UDP两种
????real_server 192.168.100.60 80 {??#配置服务节点1，需要指定real server的真实IP地址和端口
????????weight 1?????????????????????#配置服务节点的权值，权值数字越大，权值越高
????????TCP_CHECK {??????????????????#relserve的状态检测设置部分，单位是秒
??????????????????connect_timeout 10 #表示10秒无响应超时
??????????????????nb_get_retry 3?????#表示重试次数
???????????dealy_before_retry 3??#表示重试间隔
?}
????}
????real_server 192.168.100.80 80 {
????????weight 1
????????TCP_CHECK {
?????????????????connect_timeout 10??#表示10秒无响应超时
?????????????????nb_get_retry 3?????#表示重试次数
??????????dealy_before_retry 3??#表示重试间隔
?}
????}
}