Keepalived+MariaDB10配置雙主高可用資料庫

在兩臺伺服器上分別安裝MYSQL:

yum -y install MariaDB （這裡略）
安裝完後配置雙主模型：

編輯配置檔案26.210：vim /etc/my.cnf.d/server.cnf

在配置檔案中加入以前幾個引數設定：

log-bin=mysql-bin

server-id=210

relay-log=relay-bin

編輯配置檔案26.211：vim /etc/my.cnf.d/server.cnf

log-bin=mysql-bin

server-id=211

relay-log=relay-bin

分別啟動兩臺伺服器的MYSQL服務：service mysql start

伺服器設定雙主：

26.210:

mysql

grantreplicationslave,replicationclienton*.*to'jerry'@'192.168.%.%'identifiedby'jerrypass';

changemastertomaster_host='192.168.26.211',master_user='jerrymy',master_password='jerrypass',master_log_file='mysql-bin.000006',master_log_pos=558;

start slave;

showslavestatus\G; #檢視從狀態IO和SQL 執行狀態均為YES表示配置成功

26.211:

mysql

grantreplicationslave,replicationclienton*.*to'jerrymy'@'192.168.%.%'identifiedby'jerrypass';

changemastertomaster_host='192.168.26.210',master_user='jerry',master_password='jerrypass',master_log_file='mysql-bin.000007',master_log_pos=540;

start slave;
showslavestatus\G; #檢視從狀態IO和SQL 執行狀態均為YES表示配置成功

顯示狀態為成功，我們再建立資料庫來測試，看看雙主是否執行正常。

雙主設定成功。

26.210：安裝Keepalived

安裝報錯未安裝gcc

yum -y install gcc

yum -y install openssl-devel

安裝元件後編譯成功：

編輯配置檔案：vim/etc/keepalived/keepalived.conf

!ConfigurationFileforkeepalivedglobal_defs{

router_idmysql-ha

}

vrrp_instanceVI_1{

state MASTER

interfaceeth0

virtual_router_id20

priority100

advert_int1

nopreempt

authentication{

auth_typePASS

auth_pass123456

}

virtual_ipaddress{

192.168.27.210

}

}

virtual_server192.168.27.2103306{

delay_loop2

lb_algorr

lb_kindDR

persistence_timeout60

protocolTCP

real_server192.168.26.2103306{

weight1

notify_down/etc/keepalived/mysql.sh

TCP_CHECK{

connect_port3306

connect_timeout3

nb_get_retry2

delay_before_retry1

}

}

}

儲存退出啟動Keepalived服務。

service keepalived start

26.211：安裝Keepalived。

編輯配置檔案26.211：vim/etc/keepalived/keepalived.conf

!ConfigurationFileforkeepalivedglobal_defs{

router_idmysql-ha

}

vrrp_instanceVI_1{

stateBACKUP

interfaceeth0

virtual_router_id20

priority99

advert_int1

nopreempt

authentication{

auth_typePASS

auth_pass123456

}

virtual_ipaddress{

192.168.27.210

}

}

virtual_server192.168.27.2103306{

delay_loop2

lb_algorr

lb_kindDR

persistence_timeout60

protocolTCP

real_server192.168.26.2113306{

weight1

notify_down/etc/keepalived/mysql.sh

TCP_CHECK{

connect_port3306

connect_timeout3

nb_get_retry2

delay_before_retry1

}

}

}

儲存退出啟動26.211上的Keepalived

service keepalived start

測試VIP是否可用:ping 192.168.27.210 -t

回到26.210或211都可以 上，建立一個數據庫訪問測試使用者賬號密碼。

grant all on *.* to 'jerrytest'@'192.168.%.%' identified by 'jerrypass';

下面通過 VIP訪問資料庫觀察訪問：

VIP在26.210這臺伺服器上，因此我們訪問的26.210上的資料庫。

下面停掉26.210上的MYSQL觀察：

首先觀察VIP網路出現波動後恢復。

資料庫訪問成功：

VIP已經轉移動26.211伺服器上了。

我們再恢復26.210上的MYSQL資料庫服務觀察。

轉載於:https://blog.51cto.com/jdonghong/1883361