1）
同一套keepalived集群中virtual_router_id 要保持一致
/var/log/messages日志keepalived啟動正常日志：
Nov 18 22:42:07 db01 Keepalived_vrrp[26691]: Opening file '/etc/keepalived/keepalived.conf'. Nov 18 22:42:07 db01 Keepalived_vrrp[26691]: VRRP_Instance(VI_2) removing protocol VIPs. Nov 18 22:42:07 db01 Keepalived_vrrp[26691]: Using LinkWatch kernel netlink reflector... Nov 18 22:42:07 db01 Keepalived_vrrp[26691]: VRRP sockpool: [ifindex(6), proto(112), unicast(0), fd(10,11)] Nov 18 22:42:08 db01 Keepalived_vrrp[26691]: VRRP_Instance(VI_2) Transition to MASTER STATE Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: VRRP_Instance(VI_2) Entering MASTER STATE Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: VRRP_Instance(VI_2) setting protocol VIPs. Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: VRRP_Instance(VI_2) Sending/queueing gratuitous ARPs on bond0 for 192.168.10.147 Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:09 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:14 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:14 db01 Keepalived_vrrp[26691]: VRRP_Instance(VI_2) Sending/queueing gratuitous ARPs on bond0 for 192.168.10.147 Nov 18 22:42:14 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:14 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:14 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 Nov 18 22:42:14 db01 Keepalived_vrrp[26691]: Sending gratuitous ARP on bond0 for 192.168.123.147 (END)
2）
在同一網段內非同一套keepalived集群中virtual_router_id 值不能相同
案例：
配置文件內容：
cat /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 Server_01 } vrrp_instance VI_1 { state MASTER interface bond0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.10.3/24 } }
/var/log/messages日志keepalived啟動報錯
Mar 14 01:29:21 test Keepalived_vrrp[819]: VRRP_Instance(mysql-ha) ignoring received advertisment... Mar 14 01:29:22 test Keepalived_vrrp[819]: ip address associated with VRID not present in received packet : 192.168.32.53 Mar 14 01:29:22 test Keepalived_vrrp[819]: one or more VIP associated with VRID mismatch actual MASTER advert Mar 14 01:29:22 test Keepalived_vrrp[819]: bogus VRRP packet received on bond0 !!! Mar 14 01:29:22 test Keepalived_vrrp[819]: VRRP_Instance(mysql-ha) ignoring received advertisment... Mar 14 01:29:23 test Keepalived_vrrp[819]: ip address associated with VRID not present in received packet : 192.168.32.53 Mar 14 01:29:23 test Keepalived_vrrp[819]: one or more VIP associated with VRID mismatch actual MASTER advert Mar 14 01:29:23 test Keepalived_vrrp[819]: bogus VRRP packet received on bond0 !!!
解決方法:
修改virtual_router_id的值，從51改為88,因為之前在同一網段還有別的機器安裝過keepalived,并設置了virtual_router_id=51,改成不同的值后重啟keepalived后問題得到解決.
3）
在同一個網段內的，若為不同的應用做高可用，不同應用使用不同的VIP，那么vrrp_instance的名字（這里是VI_1）、virtual_router_id在不同的高可用實例必須設置不同的值區分開
案例：
配置文件內容：
cat /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 Server_01
}
vrrp_instance VI_1 {
state MASTER
interface bond0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.100.3/24 ##做為數據庫的高可用
192.168.100.4/24 ##做為tomcat的高可用
}
}
/var/log/messages日志keepalived啟動報錯：
Aug 11 11:28:36 localhostKeepalived_vrrp[16958]: (VI_1): received an invalid ip number count 1, expected2! Aug 11 11:28:36 localhostKeepalived_vrrp[16958]: bogus VRRP packet received on eth1 !!! Aug 11 11:28:36 localhostKeepalived_vrrp[16958]: VRRP_Instance(VI_1) Dropping received VRRP packet…
解決辦法：針對不通應用的高可用，配置不同的vrrp_instance和virtual_router_id
詳情配置如下：
cat /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 Server_01 } vrrp_instance VI_1 { state MASTER interface bond0 virtual_router_id 88 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.100.3/24 ##做為數據庫的高可用 } } vrrp_instance VI_2 { state MASTER interface bond0 virtual_router_id 99 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.100.4/24 ##做為tomcat的高可用 } }
