KING01與KING02互爲主從關係
[root@king01 ~]# mysql -uroot -pabcd.1234 mysql> show slave status\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.1.202 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 120 Relay_Log_File: relay-bin.000002 Relay_Log_Pos: 283 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: Yes 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: 450 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: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 2 Master_UUID: 69d85c84-25be-11e8-93a5-0800277b1412 Master_Info_File: mysql.slave_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: 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)
[root@king02 ~]# mysql -uroot -pabcd.123 mysql> show slave status\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.1.201 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000007 Read_Master_Log_Pos: 120 Relay_Log_File: relay-bin.000008 Relay_Log_Pos: 283 Relay_Master_Log_File: mysql-bin.000007 Slave_IO_Running: Yes 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: 613 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: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: 6dc7ad57-25b9-11e8-9384-08002746e9d6 Master_Info_File: mysql.slave_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: 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)
KING01安裝KEEPALIVED
[root@king01 ~]# yum install -y libnl libnl-devel [root@king01 ~]# cd /usr/local/src [root@king01 src]# tar zxvf keepalived-1.2.19.tar.gz [root@king01 src]# cd keepalived-1.2.19 [root@king01 keepalived-1.2.19]# ./configure --sysconf=/etc --with-kernel-dir=/usr/src/kernels/2.6.32-431.el6.x86_64 [root@king01 keepalived-1.2.19]# make && make install [root@king01 keepalived-1.2.19]# ln -s /usr/local/sbin/keepalived /sbin/ [root@king01 ~]# chkconfig --add keepalived [root@king01 ~]# chkconfig --level 35 keepalived on [root@king01 ~]# chkconfig --list |grep keepalived keepalived 0:off 1:off 2:off 3:on 4:off 5:on 6:off
[root@king01 ~]# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.15
smtp_connect_timeout 30
router_id king01
}
vrrp_script check_mysql {
script "/usr/local/mysql/scripts/check_mysql.sh"
interval 2
}
vrrp_instance v01 {
state BACKUP
interface eth0
virtual_router_id 200
priority 100
advert_int 1
nopreempt
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.200
}
track_script {
check_mysql
}
}[root@king01 ~]# vi /usr/local/mysql/scripts/check_mysql.sh #!/bin/bash MYSQL=/usr/local/mysql/bin/mysql MYSQL_HOST=localhost MYSQL_USER=root MYSQL_PASSWORD=abcd.1234 $MYSQL -h $MYSQL_HOST -u $MYSQL_USER -p$MYSQL_PASSWORD -e "show status;" >/dev/null 2>&1 if [ $? == 0 ] then echo " $host mysql login successfully " exit 0 else echo " $host mysql login faild" exit 1 fi [root@king01 ~]# chmod a+x /usr/local/mysql/scripts/check_mysql.sh
[root@king01 ~]# service keepalived start Starting keepalived: [ OK ] [root@king01 ~]# service keepalived status keepalived (pid 3452) is running...
[root@king01 ~]# tail -n 100 /var/log/messages Feb 23 05:09:04 king01 Keepalived[11667]: Starting Keepalived v1.2.19 (02/23,2018) Feb 23 05:09:04 king01 Keepalived[11668]: Starting Healthcheck child process, pid=11670 Feb 23 05:09:04 king01 Keepalived[11668]: Starting VRRP child process, pid=11671 Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Netlink reflector reports IP 192.168.1.201 added Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Netlink reflector reports IP fe80::a00:27ff:fe2b:d617 added Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Registering Kernel netlink reflector Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Registering Kernel netlink command channel Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Registering gratuitous ARP shared channel Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Opening file '/etc/keepalived/keepalived.conf'. Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Configuration is using : 69135 Bytes Feb 23 05:09:04 king01 Keepalived_healthcheckers[11670]: Netlink reflector reports IP 192.168.1.201 added Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: Using LinkWatch kernel netlink reflector... Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Entering BACKUP STATE Feb 23 05:09:04 king01 Keepalived_healthcheckers[11670]: Netlink reflector reports IP fe80::a00:27ff:fe2b:d617 added Feb 23 05:09:04 king01 Keepalived_healthcheckers[11670]: Registering Kernel netlink reflector Feb 23 05:09:04 king01 Keepalived_healthcheckers[11670]: Registering Kernel netlink command channel Feb 23 05:09:04 king01 Keepalived_healthcheckers[11670]: Opening file '/etc/keepalived/keepalived.conf'. Feb 23 05:09:04 king01 Keepalived_healthcheckers[11670]: Configuration is using : 11739 Bytes Feb 23 05:09:04 king01 Keepalived_healthcheckers[11670]: Using LinkWatch kernel netlink reflector... Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: VRRP sockpool: [ifindex(2), proto(112), unicast(0), fd(10,11)] Feb 23 05:09:04 king01 Keepalived_vrrp[11671]: VRRP_Script(check_mysql) succeeded Feb 23 05:09:08 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Transition to MASTER STATE Feb 23 05:09:09 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Entering MASTER STATE Feb 23 05:09:09 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) setting protocol VIPs. Feb 23 05:09:09 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Sending gratuitous ARPs on eth0 for 192.168.1.200 Feb 23 05:09:09 king01 Keepalived_healthcheckers[11670]: Netlink reflector reports IP 192.168.1.200 added Feb 23 05:09:14 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Sending gratuitous ARPs on eth0 for 192.168.1.200
[root@king01 ~]# ip addr 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:2b:d6:17 brd ff:ff:ff:ff:ff:ff inet 192.168.1.201/24 brd 192.168.1.255 scope global eth0 inet 192.168.1.200/32 scope global eth0 inet6 fe80::a00:27ff:fe2b:d617/64 scope link valid_lft forever preferred_lft forever
KING02安裝KEEPALIVED
[root@king02 ~]# yum install -y libnl libnl-devel [root@king02 ~]# cd /usr/local/src [root@king02 src]# tar zxvf keepalived-1.2.19.tar.gz [root@king02 src]# cd keepalived-1.2.19 [root@king02 keepalived-1.2.19]# ./configure --sysconf=/etc --with-kernel-dir=/usr/src/kernels/2.6.32-431.el6.x86_64 [root@king02 keepalived-1.2.19]# make && make install [root@king02 keepalived-1.2.19]# ln -s /usr/local/sbin/keepalived /sbin/ [root@king02 ~]# chkconfig --add keepalived [root@king02 ~]# chkconfig --level 35 keepalived on [root@king02 ~]# chkconfig --list |grep keepalived keepalived 0:off 1:off 2:off 3:on 4:off 5:on 6:off
[root@king02 ~]# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.15
smtp_connect_timeout 30
router_id king02
}
vrrp_script check_mysql {
script "/usr/local/mysql/scripts/check_mysql.sh"
interval 2
}
vrrp_instance v01 {
state BACKUP
interface eth0
virtual_router_id 200
priority 80
advert_int 1
nopreempt
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.200
}
track_script {
check_mysql
}
}[root@king02 ~]# vi /usr/local/mysql/scripts/check_mysql.sh #!/bin/bash MYSQL=/usr/local/mysql/bin/mysql MYSQL_HOST=localhost MYSQL_USER=root MYSQL_PASSWORD=abcd.1234 $MYSQL -h $MYSQL_HOST -u $MYSQL_USER -p$MYSQL_PASSWORD -e "show status;" >/dev/null 2>&1 if [ $? == 0 ] then echo " $host mysql login successfully " exit 0 else echo " $host mysql login faild" exit 1 fi [root@king02 ~]# chmod a+x /usr/local/mysql/scripts/check_mysql.sh
[root@king02 ~]# service keepalived start Starting keepalived: [ OK ]
[root@king02 ~]# tail -n 100 /var/log/messages Feb 23 05:31:02 king02 Keepalived[5635]: Starting Keepalived v1.2.19 (02/23,2018) Feb 23 05:31:02 king02 Keepalived[5636]: Starting Healthcheck child process, pid=5638 Feb 23 05:31:02 king02 Keepalived[5636]: Starting VRRP child process, pid=5639 Feb 23 05:31:02 king02 Keepalived_healthcheckers[5638]: Netlink reflector reports IP 192.168.1.202 added Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Netlink reflector reports IP 192.168.1.202 added Feb 23 05:31:02 king02 Keepalived_healthcheckers[5638]: Netlink reflector reports IP fe80::a00:27ff:fe17:9269 added Feb 23 05:31:02 king02 Keepalived_healthcheckers[5638]: Registering Kernel netlink reflector Feb 23 05:31:02 king02 Keepalived_healthcheckers[5638]: Registering Kernel netlink command channel Feb 23 05:31:02 king02 Keepalived_healthcheckers[5638]: Opening file '/etc/keepalived/keepalived.conf'. Feb 23 05:31:02 king02 Keepalived_healthcheckers[5638]: Configuration is using : 11737 Bytes Feb 23 05:31:02 king02 Keepalived_healthcheckers[5638]: Using LinkWatch kernel netlink reflector... Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Netlink reflector reports IP fe80::a00:27ff:fe17:9269 added Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Registering Kernel netlink reflector Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Registering Kernel netlink command channel Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Registering gratuitous ARP shared channel Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Opening file '/etc/keepalived/keepalived.conf'. Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Configuration is using : 69133 Bytes Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: Using LinkWatch kernel netlink reflector... Feb 23 05:31:02 king02 Keepalived_vrrp[5639]: VRRP_Instance(v01) Entering BACKUP STATE
[root@king02 ~]# ip addr 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:17:92:69 brd ff:ff:ff:ff:ff:ff inet 192.168.1.202/24 brd 192.168.1.255 scope global eth0 inet6 fe80::a00:27ff:fe17:9269/64 scope link valid_lft forever preferred_lft forever
測試
[root@king01 ~]# service mysqld stop Shutting down MySQL.... [ OK ] [root@king01 ~]# tail -n 100 /var/log/messages Mar 16 14:37:12 king01 Keepalived_vrrp[3455]: VRRP_Script(check_mysql) failed Mar 16 14:37:12 king01 Keepalived_vrrp[3455]: VRRP_Instance(v01) Entering FAULT STATE Mar 16 14:37:12 king01 Keepalived_vrrp[3455]: VRRP_Instance(v01) removing protocol VIPs. Mar 16 14:37:12 king01 Keepalived_vrrp[3455]: VRRP_Instance(v01) Now in FAULT state Mar 16 14:37:12 king01 Keepalived_healthcheckers[3454]: Netlink reflector reports IP 192.168.1.200 removed [root@king01 ~]# ip addr 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:46:e9:d6 brd ff:ff:ff:ff:ff:ff inet 192.168.1.201/24 brd 192.168.1.255 scope global eth0 inet6 fe80::a00:27ff:fe46:e9d6/64 scope link valid_lft forever preferred_lft forever
[root@king02 ~]# tail -n 100 /var/log/messages Mar 16 14:34:52 king02 Keepalived_vrrp[3419]: VRRP_Script(check_mysql) succeeded Mar 16 14:37:12 king02 Keepalived_vrrp[3419]: VRRP_Instance(v01) Transition to MASTER STATE Mar 16 14:37:13 king02 Keepalived_vrrp[3419]: VRRP_Instance(v01) Entering MASTER STATE Mar 16 14:37:13 king02 Keepalived_vrrp[3419]: VRRP_Instance(v01) setting protocol VIPs. Mar 16 14:37:13 king02 Keepalived_vrrp[3419]: VRRP_Instance(v01) Sending gratuitous ARPs on eth0 for 192.168.1.200 Mar 16 14:37:13 king02 Keepalived_healthcheckers[3418]: Netlink reflector reports IP 192.168.1.200 added Mar 16 14:37:18 king02 Keepalived_vrrp[3419]: VRRP_Instance(v01) Sending gratuitous ARPs on eth0 for 192.168.1.200 [root@king02 ~]# ip addr 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:7b:14:12 brd ff:ff:ff:ff:ff:ff inet 192.168.1.202/24 brd 192.168.1.255 scope global eth0 inet 192.168.1.200/32 scope global eth0 inet6 fe80::a00:27ff:fe7b:1412/64 scope link valid_lft forever preferred_lft forever
[root@king01 ~]# service mysqld start Starting MySQL. [ OK ] [root@king01 ~]# tail -n 100 /var/log/messagesMar 16 14:49:46 king01 Keepalived_vrrp[3455]: VRRP_Script(check_mysql) succeeded Mar 16 14:49:46 king01 Keepalived_vrrp[3455]: VRRP_Instance(v01) Entering BACKUP STATE