# 下載最新版本：1.2.20

# 解壓縮安裝

tar -xvf keepalived-1.2.20.tar.gz

cd keepalived-1.2.20

yum install openssl* -y

./configure

make

make install

cp /usr/local/etc/rc.d/init.d/keepalived /etc/init.d/

cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/                                                                                                                                          

ln -s /usr/local/sbin/keepalived /usr/sbin/

chmod +x /etc/init.d/keepalived

chkconfig --add keepalived

chkconfig keepalived on

mkdir /etc/keepalived

vim /etc/keepalived/keepalived.conf

global_defs { 

     notification_email { 

         [email protected]

     } 

     notification_email_from [email protected]

     smtp_server 127.0.0.1 

     smtp_connect_timeout 30 

     router_id MySQL-ha 

} 

vrrp_instance VI_1 { 

     state BACKUP   # 2 severs keep the same value.

     interface eth0 

     virtual_router_id 51 

     priority 100   # priority, the another set to 90

     advert_int 1 

     nopreempt  #don't race to control, set the highst priorty mysql servers only.                                                                                            

     authentication { 

         auth_type PASS 

         auth_pass 1111 

     } 

     virtual_ipaddress { 

         192.168.13.14

     } 

} 

virtual_server 192.168.13.14 3317 { 

     delay_loop 2   # check the real_server status for every 2 seconds.

     lb_algo wrr   #LVS   arithmetic

     lb_kind DR    #LVS model

     persistence_timeout 60   #k

     protocol TCP 

     real_server 192.168.13.15 3317 { 

         weight 3 

         notify_down /usr/local/mysql/bin/mysql.sh  # run the scripts if mysql is down. 

         TCP_CHECK { 

             connect_timeout 10    #timeout

             nb_get_retry 3       #conect times to try to connect

             delay_before_retry 3   #interval of retry

             connect_port 3317   # check mysql port

         }

     } 

}

# 1 修改keepalived啟動方式

[[email protected]_lvdi_dbm1_13_15 mysql]# vim /etc/sysconfig/keepalived                                                                                                      

KEEPALIVED_OPTIONS="-D -d -S 0"

# 2 設定路徑 /etc/syslog.conf

[[email protected]_lvdi_dbm1_13_15 mysql]# vim /etc/syslog.conf

# Log all kernel messages to the console.

# Logging much else clutters up the screen.

#kern.*                         /dev/console

# Log anything (except mail) of level info or higher.

# Don't log private authentication messages!

*.info;mail.none;authpriv.none;cron.none        /var/log/messages

# The authpriv file has restricted access.

authpriv.*                      /var/log/secure

# Log all the mail messages in one place.

mail.*                          -/var/log/maillog

# Log cron stuff

cron.*                          /var/log/cron

# Everybody gets emergency messages

*.emerg                         *

# Save news errors of level crit and higher in a special file.

uucp,news.crit                      /var/log/spooler

# Save boot messages also to boot.log

local7.*                        /var/log/boot.log

# keepalived -S 0

local0.*                                                /var/log/keepalived.log

[[email protected]_lvdi_dbm1_13_16 ~]# more /etc/keepalived/keepalived.conf                                                                                               

#vim /etc/keepalived/keepalived.conf 

global_defs { 

     notification_email { 

         [email protected]

     } 

     notification_email_from [email protected] 

     smtp_server 127.0.0.1 

     smtp_connect_timeout 30 

     router_id MySQL-ha 

} 

vrrp_instance VI_1 { 

     state BACKUP   # 2 severs keep the same value.

     interface eth0 

     virtual_router_id 51 

     priority 90   # priority, m2 is set to 90

     advert_int 1 

     #nopreempt  #don't race to control, set the highst priorty mysql servers only. 

     authentication { 

         auth_type PASS 

         auth_pass 1111 

     } 

     virtual_ipaddress { 

         192.168.13.14

     } 

} 

virtual_server 192.168.13.14 3317 { 

     delay_loop 2   # check the real_server status for every 2 seconds.

     lb_algo wrr   #LVS   arithmetic

     lb_kind DR    #LVS model

     persistence_timeout 60   #k

     protocol TCP 

     real_server 192.168.13.16 3317 { 

         weight 3 

         notify_down /usr/local/mysql/bin/mysql.sh  # run the scripts if mysql is down. 

         TCP_CHECK { 

             connect_timeout 10    #

             nb_get_retry 3       #conect times to try to connect

             delay_before_retry 3   #interval of retry

             connect_port 3317   # check mysql port

         }

     } 

}

# 1，建立個測試帳號：

  GRANT SELECT, INSERT, UPDATE, DELETE ON `test`.* TO 'kt'@'1%' IDENTIFIED BY 'zhita26ywx18';

# 2，遠端通過vip登入

[[email protected]_lvdi_dbm1_13_16 keepalived]# mysql -h192.168.13.14 -P3317 -ukt --password="zhita26ywx18"                            

mysql: [Warning] Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 1315

Server version: 5.7.11-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, 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> use business_db

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> insert into t2 select 10;

Query OK, 1 row affected (0.00 sec)

Records: 1  Duplicates: 0  Warnings: 0

mysql> select * from t2;

+----+

| a  |

+----+

|  1 |

|  3 |

|  4 |

|  3 |

| 10 |

+----+

5 rows in set (0.00 sec)

mysql>

# 1，m1上

mysql> stop slave;

Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> create table test.m select "m1-db" as m1;  # 準備m1表標識m1庫                                                                                              

Query OK, 1 row affected (0.00 sec)

Records: 1  Duplicates: 0  Warnings: 0

mysql> select * from business_db.m1;

+-------+

| m1    |

+-------+

| m1-db |

+-------+

1 row in set (0.00 sec)

mysql>

#2，m2上

mysql> stop slave;

Query OK, 0 rows affected (0.00 sec)

mysql> create table test.m select "m2-db" as m2; # 準備m2表標識m2庫

Query OK, 1 row affected (0.00 sec)

Records: 1  Duplicates: 0  Warnings: 0

mysql> select * from business_db.m2;

+-------+

| m2    |

+-------+

| m2-db |

+-------+

1 row in set (0.00 sec)

mysql>

# 關閉mysql服務

[[email protected]_lvdi_dbm1_13_16 ~]# service mysqld stop

Shutting down MySQL....                                    [  OK  ]

[[email protected]_lvdi_dbm1_13_16 ~]#

# 啟動mysql服務

[[email protected]_lvdi_dbm1_13_16 ~]# service mysqld start

Starting MySQL..                                           [  OK  ]

[[email protected]_lvdi_dbm1_13_16 ~]#

# 判斷mysql服務是否關閉，為0關閉

[[email protected]_lvdi_dbm1_13_16 ~]# ps -eaf|grep mysqld |grep -v grep |wc |awk '{print $1}'

0

# 判斷keepalived是否關閉，為0關閉

[[email protected]_lvdi_dbm1_13_16 ~]# ps -eaf|grep keepalived |grep -v grep |wc |awk '{print $1}'                                                        

0

[[email protected]_lvdi_dbm1_13_16 ~]#

# 通過vip查詢test.m表的標識資料來判斷vip繫結在哪個mysql例項所在的伺服器上

[[email protected] ~]# mysql –h10.254.13.14 -P3317 -ukt --password="zhita26ywx18" -e "select * from test.m";                               

Warning: Using a password on the command line interface can be insecure.

+-------+

| m1    |

+-------+

| m1-db |

+-------+

[[email protected] ~]#

# 通過vip查詢test.m表的標識資料來判斷vip繫結在哪個mysql例項所在的伺服器上

[[email protected] ~]# mysql –h10.254.13.14 -P3317 -ukt --password="zhita26ywx18" -e "select * from test.m";                              

Warning: Using a password on the command line interface can be insecure.

+-------+

| m2    |

+-------+

| m2-db |

+-------+

[[email protected] ~]#

# 通過vip查詢test.m表的標識資料來判斷vip繫結在哪個mysql例項所在的伺服器上

[[email protected] ~]# mysql –h10.254.13.14 -P3317 -ukt --password="zhita26ywx18" -e "select * from test.m";                           

Warning: Using a password on the command line interface can be insecure.

+-------+

| m2    |

+-------+

| m2-db |

+-------+

[[email protected] ~]#

# 通過vip查詢test.m表的標識資料來判斷vip繫結在哪個mysql例項所在的伺服器上

[[email protected] ~]# mysql –h10.254.13.14 -P3317 -ukt --password="zhita26ywx18" -e "select * from test.m";                         

Warning: Using a password on the command line interface can be insecure.

+-------+

| m1    |

+-------+

| m1-db |

+-------+

[[email protected] ~]#

[[email protected]_lvdi_dbm1_13_15 ~]#  keepalived -v

Keepalived v1.2.20 (05/08,2016)

Copyright (C) 2001-2016 Alexandre Cassen, <[email protected]>

Build options: KRNL_2_6 WITH_LVS HAVE_IPVS_SYNCD WITH_VRRP HAVE_VRRP_VMAC WITHOUT_ADDR_GEN_MODE WITHOUT_SNMP WITHOUT_SNMP_KEEPALIVED WITHOUT_SNMP_CHECKER WITHOUT_SNMP_RFC WITHOUT_SNMP_RFCV2 WITHOUT_SNMP_RFCV3 WITHOUT_LIBNL WITH_VRRP_AUTH WITH_SO_MARK WITHOUT_LIBIPTC WITHOUT_LIBIPSET WITHOUT_IPV4_DEVCONF WITHOUT_IF_H_LINK_H_COLLISION

[[email protected]_lvdi_dbm1_13_15 ~]#