近期在测试MySQL双主多个slave架构,利用keepavlied实现自动切换Master。主要工作有:

1、MySQL Mater-Maste工作(前期)

2、Keepavlied搭建,还可以结合MySQL Proxy实现读写分离

3、处理Master-Mater-Slave之间的同步关系

 

首先,先搭建Mater-Master的环境。

 

一、安装环境:

系统版本:RHEL5.4.x86_64

MySQL版本:mysql-5.0.45

Mysqlserver_1: 192.168.15.178

Mysqlserver_2: 192.168.15.185

 

二、正式安装:

在两台服务器中分别安装Mysql(略过)。

配置MySQL配置文件:

1)192.168.15.178的配置文件,如下红色标注是必须配置的,其他参数可以自行配置。


1. [mysqld]
2.  
3. server-id=1
4.  
5. auto_increment_offset=1
6.  
7. auto_increment_increment=2
8.  
9. log-bin=mysql-bin
10.  
11. log-error=/mysqldata/mysqld.log
12.  
13. pid-file=/mysqldata/mysqld.pid
14.  
15. master-host=192.168.15.185
16.  
17. master-user=backup
18.  
19. master-password=123456
20.  
21. master-port=3306
22.  
23. replicate-do-db=phpcmsv9
24.  
25. replicate-ignore-db=mysql
26.
  1. master-connect-retry=60



2)192.168.15.185的配置文件,如下红色标注是必须配置的,其他参数可以自行配置。


1. [mysqld]
2.  
3. server-id=2
4.  
5. auto_increment_offset=1
6.  
7. auto_increment_increment=2
8.  
9. log-bin=mysql-bin
10.  
11. log-error=/mysqldata/mysqld.log
12.  
13. pid-file=/mysqldata/mysqld.pid
14.  
15. master-host=192.168.15.178
16.  
17. master-user=backup
18.  
19. master-password=123456
20.  
21. master-port=3306
22.  
23. replicate-do-db=phpcmsv9
24.  
25. replicate-ignore-db=mysql
26.  
27. master-connect-retry=60


如上设置bin-log文件,并都设置对方为自己的主服务器,配置同步的数据库为map

 

三、配置MySQL:

导入要同步的数据库,先以一台作为主服务器,同步数据。我以phpcmsv9为例。

1)   在两台mysql数据库服务器里面设置权限,分别执行如下命令:
grant  replication  slave  on *.* to  'backup'@'192.168.15.%'  identified by  '123456';
在192.168.15.178查看master运行状态,获取binlog日志信息:
mysql> show master status;   
+------------------+-----------+--------------+------------------+
| File             | Position  | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+-----------+--------------+------------------+
| mysql-bin.000052 | 151744220 |              |                  | 
+------------------+-----------+--------------+------------------+
1 row in set (0.00 sec)

2)在192.168.15.185上将192.168.15.178设为自己的主服务器执行如下命令:

change master to master_host='192.168.15.178',master_user='backup',master_password='123456',master_log_file='mysql-bin.000056',master_log_pos=151744220;   

然后启动start slave;

注意这里写的bin-log参数是在178查看到的,即是对方的参数。

3)   然后在192.168.15.78执行:

mysql> show master status; 
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000005 |       98 |              |                  | 
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

4)在192.168.15.78上将192.168.15.185设为自己的主服务器执行如下命令:

change master to master_host='192.168.15.185',master_user='backup',master_password='123456',master_log_file='mysql-bin.000005',master_log_pos=98;   

然后启动start slave;

注意这里写的bin-log参数是在185查看到的,即是对方的参数。

5)MySQL同步测试配置完毕,我们会发现在任何一台mysql上更新同步的数据库里面的数据,都会同步到另一台mysql。

6)测试:

192.168.15.185建表:
mysql> create table UserState(UserStateId int auto_increment not null primary key, UseStateName varchar(50) not null); 
Query OK, 0 rows affected (0.01 sec)
 
mysql> desc  UserState;
+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+--------------+-------------+------+-----+---------+----------------+
| UserStateId  | int(11)     | NO   | PRI | NULL    | auto_increment | 
| UseStateName | varchar(50) | NO   |     |         |                | 
+--------------+-------------+------+-----+---------+----------------+
2 rows in set (0.02 sec)
192.168.15.178查表:
mysql> desc UserState;
+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+--------------+-------------+------+-----+---------+----------------+
| UserStateId  | int(11)     | NO   | PRI | NULL    | auto_increment | 
| UseStateName | varchar(50) | NO   |     |         |                | 
+--------------+-------------+------+-----+---------+----------------+
2 rows in set (0.00 sec)
ok



分类: Mysql/postgreSQL

 



承上一篇文章:“MySQL之Master-Master配置 ”已经实现了MySQL双主模式,即互相备份。接下来我们用Keepavlied来实现单点故障切换。

一、配置虚拟IP-VIP

首先我们先配置VIP节点IP地址,把每台物理地址执行到虚拟IP。

这里我们使用的虚拟IP-VIP为: 192.168.15.181
#vim /etc/sysconfig/network-scripts/ifcfg-eth0:0
DEVICE=eth0:0
IPADDR=192.168.15.181
# ip addr
 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
     inet 127.0.0.1/8 scope host lo
     inet6 ::1/128 scope host 
        valid_lft forever preferred_lft forever
 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
     link/ether 00:0c:29:d8:b3:ca brd ff:ff:ff:ff:ff:ff
     inet 192.168.15.178/24 brd 192.168.15.255 scope global eth0
     inet 192.168.15.181/32 scope global eth0
     inet 192.168.15.181/24 brd 192.168.15.255 scope global secondary eth0:0
     inet6 fe80::20c:29ff:fed8:b3ca/64 scope link 
        valid_lft forever preferred_lft forever
 3: sit0: <NOARP> mtu 1480 qdisc noop 
     link/sit 0.0.0.0 brd 0.0.0.0


 

二、安装配置keepalived

 

官网下载地址:http://www.keepalived.org/software

1)安装:

#wget http://www.keepalived.org/software/keepalived-1.2.7.tar.gz
#tar -zxvf keepalived-1.2.7.tar.gz
#cd keepalived-1.2.7
#./configure --prefix=/usr/local/keepalived --with-kernel-dir=/usr/src/kernels/2.6.18-128.el5-x86_64/   #kernel目录根据实际修改。

预编译后出现:

Keepalived configuration
------------------------
Keepalived version       : 1.2.7
Compiler                 : gcc
Compiler flags           : -g -O2 -DETHERTYPE_IPV6=0x86dd
Extra Lib                : -lpopt -lssl -lcrypto 
Use IPVS Framework       : Yes
IPVS sync daemon support : Yes
IPVS use libnl           : No
Use VRRP Framework       : Yes
Use VRRP VMAC            : No
SNMP support             : No
Use Debug flags          : No
注意如果你没有用到LVS可以把lvs去掉即 --disable-lvs-syncd --disable-lvs
#make && make install

整理管理文件:

#cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
 #cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
 #cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/建立配置文件目录(注意:keepalived的配置文件默认在/etc/keepalived/目录)
#mkdir /etc/keepalived

两台服务器(两个节点)都这样安装即可

2)配置

关于配置文件的说明,可以详见这里:

http://bbs.ywlm.net/thread-845-1-1.html 节点A192.168.15.178配置如下:
 #vim /etc/keepalived/keepalived.confglobal_defs {
    notification_email
        {
        roc@example.com
        }
    notification_email_from roc@example.com
    smtp_server 127.0.0.1
    stmp_connect_timeout 30
    router_id MySQL-ha
    }
vrrp_script chk_mysql {
        script "killall -0 mysqld"            #检测mysqld进程,也可以替换成检测脚本
        interval 5
        }
vrrp_instance VI_1 {  
     state master   #从库配置此处均是slave  
     interface eth0  
     virtual_router_id 51  
     priority 100   #优先级,另一台改为90  
     advert_int 1  
     nopreempt  #不抢占,只在优先级高的机器上设置即可,优先级低的机器不设置  
     authentication {  
        auth_type PASS  
        auth_pass 1111  
        }  
     virtual_ipaddress {  
             192.168.15.181
        }  
     track_script {
        chk_mysql        #执行上面的命令
        }
     }
virtual_server 192.168.15.181 3306 {
    delay_loop 6
    lb_algo wcl
    lb_kind DR
    #nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP
    real_server 192.168.15.178 3306 {
        weight 1
        TCP_CHECK {
          connect_timeout 10       #(10秒无响应超时)
          nb_get_retry 3
          delay_before_retry 3
          connect_port 3306
        }
    }
    real_server 10.8.10.185 3306 {
        weight 1
        TCP_CHECK {
            connect_timeout 10       #(10秒无响应超时)
            nb_get_retry 3
            delay_before_retry 3
            connect_port 3306
        }
    }
}
节点192.168.15.185配置如下:
#vim /etc/keepalived/keepalived.conf
global_defs {
    notification_email
        {
        roc@example.com
        }
    notification_email_from roc@example.com
    smtp_server 127.0.0.1
    stmp_connect_timeout 30
    router_id MySQL-ha
    }
vrrp_script chk_mysql {
        script "killall -0 mysqld"            #检测mysqld进程,也可以替换成检测脚本
        interval 5
        }
vrrp_instance VI_1 {  
     state slave   #主库配置此处均是master  
     interface eth0  
     virtual_router_id 51  
     priority 90
     advert_int 1  
     authentication {  
        auth_type PASS  
        auth_pass 1111  
        }  
     virtual_ipaddress {  
             192.168.15.181
        }  
     track_script {
        chk_mysql        #执行上面的命令
        }
     } 
virtual_server 192.168.15.181 3306 {
    delay_loop 6
    lb_algo wcl
    lb_kind DR
    #nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP
    real_server 192.168.15.178 3306 {
        weight 1
        TCP_CHECK {
          connect_timeout 10       #(10秒无响应超时)
          nb_get_retry 3
          delay_before_retry 3
          connect_port 3306
        }
    }
    real_server 10.8.10.185 3306 {
        weight 1
        TCP_CHECK {
            connect_timeout 10       #(10秒无响应超时)
            nb_get_retry 3
            delay_before_retry 3
            connect_port 3306
        }
    }
}

 

 

3)开启服务

#/usr/local/keepalived/sbin/keepalived -D 
#ps -aux | grep keepalived
root     15416  0.0  0.0  61148   736 pts/1    S+   16:43   0:00 grep keepalived
 root     31121  0.0  0.0  35832   492 ?        Ss   Jan22   0:00 keepalived -D
 root     31122  0.0  0.0  37924  1372 ?        S    Jan22   0:00 keepalived -D
 root     31125  0.0  0.0  37924  1000 ?        S    Jan22   0:03 keepalived -D

三、测试

MySQL远程登录测试

客户端登录VIP,看是否能登录,在登录之两台MySQL服务器都要授权允许从远程登录

mysql>  grant all privileges on phpcmsv9.* to 'dbuser_do'@'192.168.10.6' identified by '123456';            
No connection. Trying to reconnect...
Connection id:    1168
Current database: phpcmsv9
Query OK, 0 rows affected (0.11 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

客户端登录结果:

此时查询的是192.168.15.185的数据库信息,关闭192.168.15.185 Mysql,继续联系数据库。

此时连接的是192.168.15.178的数据库。

Keepavlied完成后,接下来要测试的就是如果让master服务器和slave 也能够实现自动切换,同步保证数据同步正常。


 


转载于:https://blog.51cto.com/fccwcom/1191280