mysql-mmm 安裝配置過程（兩主一備份狀況

mysql-mmm 安裝配置過程（兩主一備份狀況）

1、環境說明
系統：centos 6.2 x86_64
192.168.101.77 mysql-mmm-agent,mysql-master
192.168.101.88 mysql-mmm-agent,mysql-master
192.168.101.99 mysql-mmm-agent,mysql-slave
192.168.101.33 mysql-mmm monitor

vip:192.168.101.7 write
vip:192.168.101.8 read
vip:192.168.101.9 read
vip:192.168.101.10 read


192.168.101.77 與192.168.101.88 安裝mysql主主同步
192.168.101.99 配置成192.168.101.77的備

2、mysql 安裝配置過程略

3、mysql主主、主從配置
192.168.101.77添加主備帳號
grant replication slave on *.* to 'slave-user'@'192.168.101.88' identified by 'slave';
grant replication slave on *.* to 'slave-user'@'192.168.101.99' identified by 'slave';
192.168.101.88添加主備帳號
grant replication slave on *.* to 'slave-user'@'192.168.101.77' identified by 'slave';
grant replication slave on *.* to 'slave-user'@'192.168.101.99' identified by 'slave';
192.168.101.99添加主備帳號
grant replication slave on *.* to 'slave-user'@'192.168.101.77' identified by 'slave';
grant replication slave on *.* to 'slave-user'@'192.168.101.88' identified by 'slave';


192.168.101.77 my.cnf增長下面配置文件
server-id=1
log-bin=mysql-bin
binlog_format=ROW
log-slave-updates
sync_binlog=1
auto_increment_increment=2
auto_increment_offset=1
skip_slave_start

192.168.101.88 my.cnf 添加下面配置文件
server-id=2
log-bin=mysql-bin
binlog_format=ROW
log-slave-updates
sync_binlog=1
auto_increment_increment=2
auto_increment_offset=1
skip_slave_start

192.168.101.99 my.cnf 添加下面配置文件
server-id=3
log-bin=mysql-bin
log-slave-updates


注意：192.168.101.77，192.168.101.88，192.168.101.99三個裏面的server-id 不能重複

我是新安裝的數據庫，因此數據庫拷貝就略過了

192.168.101.77/88/99上執行
stop slave;
flush logs; #關閉當前的二進制日誌文件並建立一個新文件，新的二進制日誌文件的名字在當前的二進制文件的編號上加1。
FLUSH TABLES WITH READ LOCK;  #服務器鎖表
mysql> show master status;  #主要獲取binlog文件名和pos值
+---------------+----------+--------------+------------------+-------------------+
| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+---------------+----------+--------------+------------------+-------------------+
| binlog.000001 |      120 |              |                  |                   |
+---------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

192.168.101.77上執行
mysql> change master to
-> master_host='192.168.101.88',
-> master_user='slave-user',
-> master_password='slave',
-> master_log_file='binlog.000001',
-> master_log_pos=120,
-> master_connect_retry=10;

192.168.101.88/99執行
mysql> change master to
-> master_host='192.168.101.77',
-> master_user='slave-user',
-> master_password='slave',
-> master_log_file='mysql-bin.000002',
-> master_log_pos=120,
-> master_connect_retry=10;

start slave;
show slave status\G; 查看狀態
下面兩項爲Yes說明主備成功
Slave_IO_Running: Yes
Slave_SQL_Running: Yes

解鎖77/88/99服務器
UNLOCK TABLES;

192.168.101.77/88/99三臺都要添加權限
grant super,replication client,process on *.* to 'mmm_agent'@'192.168.101.%' identified by 'agentpass';

4、mysql-mmm配置
# yum -y install perl perl-devel
wget http://search.cpan.org/CPAN/authors/id/A/AN/ANDK/CPAN-1.9205.tar.gz
[root@centos6 MMM]# tar  zxvf CPAN-1.9205.tar.gz
[root@centos6 MMM]# cd CPAN-1.9205
[root@open-source CPAN-1.94]# perl Makefile.PL
[root@open-source CPAN-1.94]# make
[root@open-source CPAN-1.94]# make install

# perl -MCPAN -e shell
cpan> install Algorithm::Diff
cpan> install DBI
cpan>install Log::Dispatch
cpan> install Log::Log4perl
cpan> install Mail::Send
cpan> install Net::ARP
cpan> install Proc::Daemon
cpan> install Time::HiRes
cpan>install DBD::mysql
cpan>install File::stat
cpan>install File:basename

安裝mysql-mmm
# tar -zxvf mysql-mmm-2.2.1.tar.gz
# cd mysql-mmm-2.2.1
# make install

192.168.101.77/88/99
修改配置文件兩個配置文件同樣
[root@open-source ~]# cat /etc/mysql-mmm/mmm_common.conf
active_master_role      writer

<host default>
   cluster_interface       eth0
   pid_path                /var/run/mysql-mmm/mmm_agentd.pid
   bin_path                /usr/lib/mysql-mmm/
   replication_user        slave-user
   replication_password    slave
   agent_user              mmm_agent
   agent_password          agentpass
</host>

<host open77>
   ip      192.168.101.77
   mode    master
   peer    open77
</host>

<host open88>
   ip      192.168.101.88
   mode    master
   peer    open88
</host>

<host open99>
   ip      192.168.101.99
   mode    slave
</host>

<role writer>
   hosts   open77, open88
   ips     192.168.101.7
   mode    exclusive
</role>

<role reader>
   hosts   open77,open88,open99
   ips     192.168.101.8,192.168101.9,192.168.101.10
   mode    balanced
</role>

192.168.101.77
# cat /etc/mysql-mmm/mmm_agent.conf  
include mmm_common.conf
this open77

192.168.101.88
# cat /etc/mysql-mmm/mmm_agent.conf  
include mmm_common.conf
this open88

192.168.101.99
# cat /etc/mysql-mmm/mmm_agent.conf  
include mmm_common.conf
this open99

192.168.101.77/88/99啓動mysql-mmm-agent
[root@open-source ~]# /etc/init.d/mysql-mmm-agent start


192.168.101.33
[root@open ~]# cat /etc/mysql-mmm/mmm_mon.conf
include mmm_common.conf

<monitor>
   ip                  192.168.101.33
   pid_path            /var/run/mysql-mmm/mmm_mond.pid
   bin_path            /usr/libexec/mysql-mmm
   status_path         /var/lib/mysql-mmm/mmm_mond.status
   ping_ips            192.168.101.77, 192.168.101.88,192.168.101.99
   auto_set_online     60

</monitor>

<host default>
   monitor_user        mmm_agent
   monitor_password    agentpass
</host>

debug 0

啓動服務（注意修改啓動文件，將bin和pid路徑指到你本身的配置路徑）
[root@open-source ~]# /etc/init.d/mysql-mmm-monitor start
[root@open-source ~]# /etc/init.d/mysql-mmm-agent start

測試
1.查看是否全部都正常
[root@salt-server ~]# mmm_control show
 open77(192.168.101.77) master/ONLINE. Roles: reader(192.168.101.8), writer(192.168.101.7)
 open88(192.168.101.88) master/ONLINE. Roles: reader(192.168.101.10)
 open99(192.168.101.99) slave/ONLINE. Roles: reader(192.168101.9)

[root@salt-server ~]# mmm_control checks all
open88  ping         [last change: 2013/12/04 23:45:12]  OK
open88  mysql        [last change: 2013/12/04 23:45:12]  OK
open88  rep_threads  [last change: 2013/12/04 23:45:12]  OK
open88  rep_backlog  [last change: 2013/12/04 23:48:28]  OK: Backlog is null
open99  ping         [last change: 2013/12/04 23:45:12]  OK
open99  mysql        [last change: 2013/12/04 23:45:12]  OK
open99  rep_threads  [last change: 2013/12/04 23:45:12]  OK
open99  rep_backlog  [last change: 2013/12/04 23:45:12]  OK: Backlog is null
open77  ping         [last change: 2013/12/04 23:45:12]  OK
open77  mysql        [last change: 2013/12/04 23:45:12]  OK
open77  rep_threads  [last change: 2013/12/04 23:45:12]  OK
open77  rep_backlog  [last change: 2013/12/04 23:48:28]  OK: Backlog is null

2.停掉192.168.101.88 mysql
[root@open2 ~]# /etc/init.d/mysqld stop
Shutting down MySQL. SUCCESS!

show能夠看到讀切換到了99備上
[root@salt-server ~]# mmm_control show
 open77(192.168.101.77) master/ONLINE. Roles: reader(192.168.101.8), writer(192.168.101.7)
 open88(192.168.101.88) master/HARD_OFFLINE. Roles:
 open99(192.168.101.99) slave/ONLINE. Roles: reader(192.168.101.10), reader(192.168101.9)

[root@salt-server ~]# mmm_control checks all
open88  ping         [last change: 2013/12/04 23:45:12]  OK
open88  mysql        [last change: 2013/12/04 23:51:37]  ERROR: Connect error (host = 192.168.101.88:3306, user = mmm_agent)! Can't connect to MySQL server on '192.168.101.88' (111)
open88  rep_threads  [last change: 2013/12/04 23:45:12]  OK
open88  rep_backlog  [last change: 2013/12/04 23:48:28]  OK: Backlog is null
open99  ping         [last change: 2013/12/04 23:45:12]  OK
open99  mysql        [last change: 2013/12/04 23:45:12]  OK
open99  rep_threads  [last change: 2013/12/04 23:45:12]  OK
open99  rep_backlog  [last change: 2013/12/04 23:45:12]  OK: Backlog is null
open77  ping         [last change: 2013/12/04 23:45:12]  OK
open77  mysql        [last change: 2013/12/04 23:45:12]  OK
open77  rep_threads  [last change: 2013/12/04 23:45:12]  OK
open77  rep_backlog  [last change: 2013/12/04 23:48:28]  OK: Backlog is null

3.啓動88上mysql
[root@salt-server ~]# mmm_control show
 open77(192.168.101.77) master/ONLINE. Roles: reader(192.168.101.8), writer(192.168.101.7)
 open88(192.168.101.88) master/AWAITING_RECOVERY. Roles:
 open99(192.168.101.99) slave/ONLINE. Roles: reader(192.168.101.10), reader(192.168101.9)
等一下子一切正常
[root@salt-server ~]# mmm_control show
 open77(192.168.101.77) master/ONLINE. Roles: reader(192.168.101.8), writer(192.168.101.7)
 open88(192.168.101.88) master/ONLINE. Roles: reader(192.168.101.10)
 open99(192.168.101.99) slave/ONLINE. Roles: reader(192.168101.9)

4.停掉77寫的數據庫，能夠看到寫自動切換到88上了
[root@salt-server ~]# mmm_control show      
 open77(192.168.101.77) master/HARD_OFFLINE. Roles:
 open88(192.168.101.88) master/ONLINE. Roles: reader(192.168.101.10), writer(192.168.101.7)
 open99(192.168.101.99) slave/ONLINE. Roles: reader(192.168.101.8), reader(192.168101.9)

5.若是看到某一臺老是AWAITING_RECOVERY. Roles:自動起不來，能夠手動起來  
[root@salt-server ~]# mmm_control show
 open77(192.168.101.77) master/AWAITING_RECOVERY. Roles:
 open88(192.168.101.88) master/ONLINE. Roles: reader(192.168.101.10), writer(192.168.101.7)
 open99(192.168.101.99) slave/ONLINE. Roles: reader(192.168.101.8), reader(192.168101.9)

[root@salt-server ~]# mmm_control set_online open77
OK: State of 'open77' changed to ONLINE. Now you can wait some time and check its new roles!
[root@salt-server ~]# mmm_control show  
 open77(192.168.101.77) master/ONLINE. Roles: reader(192.168101.9)
 open88(192.168.101.88) master/ONLINE. Roles: reader(192.168.101.10), writer(192.168.101.7)
 open99(192.168.101.99) slave/ONLINE. Roles: reader(192.168.101.8)

6.若是99備一開始設置的77爲master，當77mysql宕掉後，最自動切換到88爲master