在VRRP中有两组重要的概念：VRRP路由器和虚拟路由器，主控路由器和备份路由器。
VRRP路由器是指运行VRRP的路由器，是物理实体，虚拟路由器是指VRRP协议创建的，是逻辑概念。一组VRRP路由器协同工作，共同构成一台虚拟路由器。 Vrrp中存在着一种选举机制，用以选出提供服务的路由即主控路由，其他的则成了备份路由。当主控路由失效后，备份路由中会重新选举出一个主控路由，来继续工作，来保障不间断服务。
一、配置mysql主主复制：
见以前文章：http://blog.csdn.net/crpp0902/article/details/76188059
二、安装keeplived:
下载keepalived-1.2.19.tar.gz
解压tar xzvf keepalived-1.2.19.tar.gz
[root@erptest install]# cd keepalived-1.3.2
[root@erptest keepalived-1.3.2]# ls
aclocal.m4 bin_install configure COPYING genhash keepalived Makefile.am README
ar-lib ChangeLog configure.ac depcomp INSTALL keepalived.spec.in Makefile.in TODO
AUTHOR compile CONTRIBUTORS doc install-sh lib missing
[root@erptest keepalived-1.3.2]# make
make: *** No targets specified and no makefile found. Stop.
[root@erptest keepalived-1.3.2]# ./configure
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
。。。。。。。。。。。。。。。。
configure: error:
!!! Please install libnfnetlink headers. !!! 报错
解决：
rpm -ivh libnfnetlink-devel-1.0.0-1.el6.x86_64.rpm
rpm -ivh netlink-1.0.0-1.el6.x86_64xxx.rpm
[root@erptest keepalived-1.3.2]# ./configure
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
。。。。。。。
config.status: creating lib/config.h
config.status: executing depfiles commands
Keepalived configuration
------------------------
Keepalived version : 1.3.2
Compiler : gcc
Preprocessor flags :
Compiler flags : -Wall -Wunused -Wstrict-prototypes -Wextra -g -O2
Linker flags :
Extra Lib : -ldl -lssl -lcrypto -lnl -L/lib64 -liptc
Use IPVS Framework : Yes
IPVS use libnl : Yes
IPVS syncd attributes : No
IPVS 64 bit stats : No
fwmark socket support : Yes
Use VRRP Framework : Yes
Use VRRP VMAC : No
Use VRRP authentication : Yes
With ip rules/routes : Yes
SNMP vrrp support : No
SNMP checker support : No
SNMP RFCv2 support : No
SNMP RFCv3 support : No
DBUS support : No
SHA1 support : No
Use Debug flags : No
Stacktrace support : No
Memory alloc check : No
libnl version : 1
Use IPv4 devconf : No
Use libiptc : Yes
Use libipset : No
init type : upstart
Build genhash : Yes
Build documentation : No
[root@erptest keepalived-1.2.19]# make
make -C lib || exit 1;
。。。。。。。。。。
strip ../bin/genhash
Make complete
make[1]: Leaving directory `/u02/install/keepalived-1.2.19/genhash'
Make complete
[root@erptest keepalived-1.2.19]make install
另外一个节点同样执行上面步骤
三、配置keepalived
第一节点
[root@erptest install]# more /etc/keepalived/keepalived.conf
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state backup
interface eth1
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
10.81.35.10
}
}
virtual_server 10.81.35.10 3306 {
delay_loop 6
lb_algo wrr
lb_kind DR
persistence_timeout 50 #会话保持时间
protocol TCP
real_server 10.81.35.3 3306 {
weight 3
notify_down /usr/local/checkmysql.sh #检测到mysql服务挂了就执行这个脚本（脚本要自己写哈）
TCP_CHECK {
connect_timeout 10 #连接超时时间
nb_get_retry 3 #重连次数
delay_before_retry 3 #重连间隔时间
connect_port 3306 #健康检查端口
}
}
}
第二节点
[root@dev ~]# more /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 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state backup
interface eth1
virtual_router_id 51
priority 100
nopreempt
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
10.81.35.10
}
}
virtual_server 10.81.35.10 3306 {
delay_loop 6
lb_algo wrr
lb_kind DR
persistence_timeout 50 #会话保持时间
protocol TCP
real_server 10.81.35.2 3306 {
weight 3
notify_down /usr/local/checkmysql.sh #检测到mysql服务挂了就执行这个脚本（脚本要自己写哈）
TCP_CHECK {
connect_timeout 10 #连接超时时间
nb_get_retry 3 #重连次数
delay_before_retry 3 #重连间隔时间
connect_port 3306 #健康检查端口
}
}
}
配置完成！！！
四、测试：
分别在两台机器上查看messages日志文件：
[root@dev keepalived]# tail -f /var/log/messages
Jul 27 16:12:17 dev vmnet-natd: RTM_DELADDR: index:3, addr:10.81.35.10
Jul 27 16:12:17 dev kernel: userif-3: sent link up event.
Jul 27 16:12:17 dev kernel: userif-3: sent link down event.
Jul 27 16:30:54 dev kernel: userif-3: sent link up event.
Jul 27 16:30:54 dev kernel: frmweb[16392]: segfault at 6974655e ip 00000000f75022c1 sp 00000000ffe739a8 error 4 in libsosdw.so.0[f74fe000+b000]
Jul 27 16:30:54 dev abrtd: Directory 'ccpp-2017-07-27-16:30:54-16392' creation detected
Jul 27 16:30:54 dev abrt[33529]: Saved core dump of pid 16392 (/u01/PROD/apps/tech_st/10.1.2/bin/frmweb) to /var/spool/abrt/ccpp-2017-07-27-16:30:54-16392 (40992768 bytes)
Jul 27 16:30:55 dev abrtd: Executable '/u01/PROD/apps/tech_st/10.1.2/bin/frmweb' doesn't belong to any package
Jul 27 16:30:55 dev abrtd: 'post-create' on '/var/spool/abrt/ccpp-2017-07-27-16:30:54-16392' exited with 1
Jul 27 16:30:55 dev abrtd: Corrupted or bad directory '/var/spool/abrt/ccpp-2017-07-27-16:30:54-16392', deleting
Jul 27 16:35:01 dev Keepalived[33657]: Starting Keepalived v1.2.19 (07/27,2017)
Jul 27 16:35:01 dev Keepalived[33658]: Starting Healthcheck child process, pid=33659
Jul 27 16:35:01 dev Keepalived[33658]: Starting VRRP child process, pid=33660
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP 10.81.35.2 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP 192.168.231.1 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP 172.16.153.1 added
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP 10.81.35.2 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP 192.168.231.1 added
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP 172.16.153.1 added
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff7 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff8 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP fe80::250:56ff:fec0:1 added
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff7 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Netlink reflector reports IP fe80::250:56ff:fec0:8 added
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff8 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Registering Kernel netlink reflector
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP fe80::250:56ff:fec0:1 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Registering Kernel netlink command channel
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP fe80::250:56ff:fec0:8 added
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Registering gratuitous ARP shared channel
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Registering Kernel netlink reflector
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Registering Kernel netlink command channel
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Configuration is using : 17487 Bytes
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Configuration is using : 68551 Bytes
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: Using LinkWatch kernel netlink reflector...
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: VRRP_Instance(VI_1) Entering BACKUP STATE
Jul 27 16:35:01 dev Keepalived_vrrp[33660]: VRRP sockpool: [ifindex(3), proto(112), unicast(0), fd(10,11)]
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Using LinkWatch kernel netlink reflector...
Jul 27 16:35:01 dev Keepalived_healthcheckers[33659]: Activating healthchecker for service [10.81.35.2]:3306
Jul 27 16:35:05 dev Keepalived_vrrp[33660]: VRRP_Instance(VI_1) Transition to MASTER STATE
Jul 27 16:35:06 dev Keepalived_vrrp[33660]: VRRP_Instance(VI_1) Entering MASTER STATE
Jul 27 16:35:06 dev Keepalived_vrrp[33660]: VRRP_Instance(VI_1) setting protocol VIPs.
Jul 27 16:35:06 dev Keepalived_healthcheckers[33659]: Netlink reflector reports IP 10.81.35.10 added
Jul 27 16:35:06 dev vmnet-natd: RTM_NEWADDR: index:3, addr:10.81.35.10
Jul 27 16:35:06 dev Keepalived_vrrp[33660]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 10.81.35.10
Jul 27 16:35:06 dev kernel: userif-3: sent link down event.
Jul 27 16:35:11 dev Keepalived_vrrp[33660]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 10.81.35.10
Jul 27 16:39:52 dev kernel: userif-3: sent link up event.
Jul 27 16:39:52 dev kernel: frmweb[15170]: segfault at 6974655e ip 00000000f75b92c1 sp 00000000ffdac3b8 error 4 in libsosdw.so.0[f75b5000+b000]
Jul 27 16:39:52 dev abrtd: Directory 'ccpp-2017-07-27-16:39:52-15170' creation detected
Jul 27 16:39:52 dev abrt[33895]: Saved core dump of pid 15170 (/u02/PROD/apps/tech_st/10.1.2/bin/frmweb) to /var/spool/abrt/ccpp-2017-07-27-16:39:52-15170 (48631808 bytes)
Jul 27 16:39:52 dev abrtd: Executable '/u02/PROD/apps/tech_st/10.1.2/bin/frmweb' doesn't belong to any package
Jul 27 16:39:52 dev abrtd: 'post-create' on '/var/spool/abrt/ccpp-2017-07-27-16:39:52-15170' exited with 1
Jul 27 16:39:52 dev abrtd: Corrupted or bad directory '/var/spool/abrt/ccpp-2017-07-27-16:39:52-15170', deleting
Jul 27 16:42:26 dev Keepalived_healthcheckers[33659]: TCP connection to [10.81.35.2]:3306 failed !!!
Jul 27 16:42:26 dev Keepalived_healthcheckers[33659]: Removing service [10.81.35.2]:3306 from VS [10.81.35.10]:3306
Jul 27 16:42:26 dev Keepalived_healthcheckers[33659]: Executing [/usr/local/checkmysql.sh] for service [10.81.35.2]:3306 in VS [10.81.35.10]:3306
Jul 27 16:42:26 dev Keepalived_healthcheckers[33659]: Lost quorum 1-0=1 > 0 for VS [10.81.35.10]:3306
Jul 27 16:42:26 dev Keepalived_healthcheckers[33659]: Remote SMTP server [127.0.0.1]:25 connected.
Jul 27 16:42:26 dev Keepalived_healthcheckers[33659]: SMTP alert successfully sent.
Jul 27 16:42:26 dev Keepalived[33658]: Stopping Keepalived v1.2.19 (07/27,2017)
Jul 27 16:43:58 dev Keepalived[34526]: Starting Keepalived v1.2.19 (07/27,2017)
Jul 27 16:43:58 dev Keepalived[34527]: Starting Healthcheck child process, pid=34530
Jul 27 16:43:58 dev Keepalived[34527]: Starting VRRP child process, pid=34531
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP 10.81.35.2 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP 10.81.35.10 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP 192.168.231.1 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP 172.16.153.1 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff7 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff8 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP fe80::250:56ff:fec0:1 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Netlink reflector reports IP fe80::250:56ff:fec0:8 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Registering Kernel netlink reflector
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Registering Kernel netlink command channel
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Registering gratuitous ARP shared channel
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP 10.81.35.2 added
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP 10.81.35.10 added
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP 192.168.231.1 added
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP 172.16.153.1 added
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Configuration is using : 68551 Bytes
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff7 added
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: Using LinkWatch kernel netlink reflector...
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5ff8 added
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP fe80::250:56ff:fec0:1 added
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Netlink reflector reports IP fe80::250:56ff:fec0:8 added
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Registering Kernel netlink reflector
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Registering Kernel netlink command channel
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Configuration is using : 17487 Bytes
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: VRRP_Instance(VI_1) Entering BACKUP STATE
Jul 27 16:43:58 dev Keepalived_vrrp[34531]: VRRP sockpool: [ifindex(3), proto(112), unicast(0), fd(10,11)]
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: IPVS: Service already exists
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Using LinkWatch kernel netlink reflector...
Jul 27 16:43:58 dev Keepalived_healthcheckers[34530]: Activating healthchecker for service [10.81.35.2]:3306
Jul 27 16:44:41 dev Keepalived_vrrp[34531]: VRRP_Instance(VI_1) Transition to MASTER STATE
Jul 27 16:44:42 dev Keepalived_vrrp[34531]: VRRP_Instance(VI_1) Entering MASTER STATE
Jul 27 16:44:42 dev Keepalived_vrrp[34531]: VRRP_Instance(VI_1) setting protocol VIPs.
Jul 27 16:44:42 dev Keepalived_vrrp[34531]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 10.81.35.10
Jul 27 16:44:47 dev Keepalived_vrrp[34531]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 10.81.35.10
[root@erptest keepalived]# ps -ef|grep keep
root 24173 11477 0 16:40 pts/0 00:00:00 grep keep
[root@erptest keepalived]# ps -ef|grep keepalived
root 24181 11477 0 16:40 pts/0 00:00:00 grep keepalived
[root@erptest keepalived]# tail -f /var/log/messages
Jul 27 16:30:17 erptest Keepalived_healthcheckers[23119]: Netlink reflector reports IP 10.81.35.10 added
Jul 27 16:30:17 erptest Keepalived_vrrp[23120]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 10.81.35.10
Jul 27 16:30:18 erptest Keepalived_healthcheckers[23119]: TCP connection to [10.81.35.3]:3306 failed !!!
Jul 27 16:30:18 erptest Keepalived_healthcheckers[23119]: Removing service [10.81.35.3]:3306 from VS [10.81.35.10]:3306
Jul 27 16:30:18 erptest Keepalived_healthcheckers[23119]: Executing [/usr/local/checkmysql.sh] for service [10.81.35.3]:3306 in VS [10.81.35.10]:3306
Jul 27 16:30:18 erptest Keepalived_healthcheckers[23119]: Lost quorum 1-0=1 > 0 for VS [10.81.35.10]:3306
Jul 27 16:30:18 erptest Keepalived_healthcheckers[23119]: Remote SMTP server [192.168.200.1]:25 connected.
Jul 27 16:30:18 erptest Keepalived[23118]: Stopping Keepalived v1.2.19 (07/27,2017)
Jul 27 16:30:18 erptest Keepalived_vrrp[23120]: VRRP_Instance(VI_1) sending 0 priority
Jul 27 16:30:18 erptest Keepalived_vrrp[23120]: VRRP_Instance(VI_1) removing protocol VIPs.
Jul 27 16:40:38 erptest Keepalived[24205]: Starting Keepalived v1.2.19 (07/27,2017)
Jul 27 16:40:38 erptest Keepalived[24208]: Starting Healthcheck child process, pid=24209
Jul 27 16:40:38 erptest Keepalived[24208]: Starting VRRP child process, pid=24210
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Netlink reflector reports IP 10.81.35.3 added
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e43 added
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e44 added
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd35 added
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Netlink reflector reports IP 10.81.35.3 added
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd36 added
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Registering Kernel netlink reflector
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e43 added
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e44 added
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd35 added
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd36 added
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Registering Kernel netlink command channel
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Registering Kernel netlink reflector
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Registering gratuitous ARP shared channel
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Registering Kernel netlink command channel
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Configuration is using : 17161 Bytes
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Configuration is using : 68225 Bytes
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: Using LinkWatch kernel netlink reflector...
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) Entering BACKUP STATE
Jul 27 16:40:38 erptest Keepalived_vrrp[24210]: VRRP sockpool: [ifindex(3), proto(112), unicast(0), fd(10,11)]
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Using LinkWatch kernel netlink reflector...
Jul 27 16:40:38 erptest Keepalived_healthcheckers[24209]: Activating healthchecker for service [10.81.35.3]:3306
Jul 27 16:42:21 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) Transition to MASTER STATE
Jul 27 16:42:22 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) Entering MASTER STATE
Jul 27 16:42:22 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) setting protocol VIPs.
Jul 27 16:42:22 erptest Keepalived_healthcheckers[24209]: Netlink reflector reports IP 10.81.35.10 added
Jul 27 16:42:22 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 10.81.35.10
Jul 27 16:42:27 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 10.81.35.10
Jul 27 16:44:32 erptest Keepalived_healthcheckers[24209]: TCP connection to [10.81.35.3]:3306 failed !!!
Jul 27 16:44:32 erptest Keepalived_healthcheckers[24209]: Removing service [10.81.35.3]:3306 from VS [10.81.35.10]:3306
Jul 27 16:44:32 erptest Keepalived_healthcheckers[24209]: Executing [/usr/local/checkmysql.sh] for service [10.81.35.3]:3306 in VS [10.81.35.10]:3306
Jul 27 16:44:32 erptest Keepalived_healthcheckers[24209]: Lost quorum 1-0=1 > 0 for VS [10.81.35.10]:3306
Jul 27 16:44:32 erptest Keepalived_healthcheckers[24209]: Remote SMTP server [127.0.0.1]:25 connected.
Jul 27 16:44:32 erptest Keepalived_healthcheckers[24209]: SMTP alert successfully sent.
Jul 27 16:44:32 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) sending 0 priority
Jul 27 16:44:32 erptest Keepalived[24208]: Stopping Keepalived v1.2.19 (07/27,2017)
Jul 27 16:44:32 erptest Keepalived_vrrp[24210]: VRRP_Instance(VI_1) removing protocol VIPs.
Jul 27 16:46:03 erptest Keepalived[24805]: Starting Keepalived v1.2.19 (07/27,2017)
Jul 27 16:46:03 erptest Keepalived[24806]: Starting Healthcheck child process, pid=24807
Jul 27 16:46:03 erptest Keepalived[24806]: Starting VRRP child process, pid=24808
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Netlink reflector reports IP 10.81.35.3 added
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e43 added
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e44 added
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd35 added
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd36 added
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Registering Kernel netlink reflector
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Registering Kernel netlink command channel
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Registering gratuitous ARP shared channel
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Netlink reflector reports IP 10.81.35.3 added
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Netlink reflector reports IP 192.168.122.1 added
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e43 added
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Netlink reflector reports IP fe80::ea61:1fff:fe1a:5e44 added
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd35 added
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Netlink reflector reports IP fe80::2e4d:54ff:fe44:cd36 added
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Registering Kernel netlink reflector
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Registering Kernel netlink command channel
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Configuration is using : 68225 Bytes
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: Using LinkWatch kernel netlink reflector...
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Opening file '/etc/keepalived/keepalived.conf'.
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Configuration is using : 17161 Bytes
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: VRRP_Instance(VI_1) Entering BACKUP STATE
Jul 27 16:46:03 erptest Keepalived_vrrp[24808]: VRRP sockpool: [ifindex(3), proto(112), unicast(0), fd(10,11)]
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: IPVS: Service already exists
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Using LinkWatch kernel netlink reflector...
Jul 27 16:46:03 erptest Keepalived_healthcheckers[24807]: Activating healthchecker for service [10.81.35.3]:3306
root@erptest ~]# service mysql stop
Shutting down MySQL............[纭畾]
[root@erptest ~]# service mysql start
Starting MySQL.[纭畾]
[root@erptest ~]# keepalived -D -f /etc/keepalived/keepalived.conf
[root@erptest ~]#
可以看到message日志里VIP随着mysql的起停在不断的在双机之间切换。
[root@dtpiprda ~]# mysql -uroot -p12345 -h 10.81.35.10
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 32
Server version: 5.6.37-log MySQL Community Server (GPL)
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Reconnecting after a failed master event read
Master_Host: 10.81.35.2
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: binlog.000002
Read_Master_Log_Pos: 120
Relay_Log_File: binlog.000006
Relay_Log_Pos: 280
Relay_Master_Log_File: binlog.000002
Slave_IO_Running: Connecting
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 120
Relay_Log_Space: 444
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 2003
Last_IO_Error: error reconnecting to master 'repluser@10.81.35.2:3306' - retry-time: 60 retries: 2
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
Master_Info_File: /u02/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 170727 16:43:16
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
停止10.81.35.3上的mysql;
mysql> show slave status \G
ERROR 2013 (HY000): Lost connection to MySQL server during query
mysql> show slave status \G
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 14
Current database: *** NONE ***
再查询，发现已经切换到的10.81.35.2上了。
*************************** 1. row ***************************
Slave_IO_State: Reconnecting after a failed master event read
Master_Host: 10.81.35.3
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: binlog.000002
Read_Master_Log_Pos: 120
Relay_Log_File: binlog.000008
Relay_Log_Pos: 280
Relay_Master_Log_File: binlog.000002
Slave_IO_Running: Connecting
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 120
Relay_Log_Space: 444
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 2003
Last_IO_Error: error reconnecting to master 'repluser@10.81.35.3:3306' - retry-time: 60 retries: 1
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 2
Master_UUID: 98b6f1e4-7026-11e7-b381-e8611f1a5e44
Master_Info_File: /u02/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 170727 16:44:46
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.01 sec)
mysql>