MySQL中的MMM集群部署是怎样的,很多新手对此不是很清楚,为了帮助大家解决这个难题,下面小编将为大家详细讲解,有这方面需求的人可以来学习下,希望你能有所收获。
MySQL-MMM集群部署
MMM(Master-Master replication managerfor Mysql,Mysql主主复制管理器)是一套灵活的脚本程序,基于perl实现,用来对mysql replication进行监控和故障迁移,并能管理mysql Master-Master复制的配置(同一时间只有一个节点是可写的)。
mmm_mond:监控进程,负责所有的监控工作,决定和处理所有节点角色活动。此脚本需要在监管机上运行。
mmm_agentd:运行在每个mysql服务器上的代理进程,完成监控的探针工作和执行简单的远端服务设置。此脚本需要在被监管机上运行。
mmm_control:一个简单的脚本,提供管理mmm_mond进程的命令。
实验拓扑图
实验环境准备
五台虚拟机器 IP 主机名分别为:
192.168.4.10主机名:mysql10
192.168.4.11主机名:mysql11
192.168.4.12主机名:mysql12
192.168.4.13主机名:mysql13
192.168.4.120主机名:client120
每台虚拟机关闭防火墙和SELinux的限制 以方便实验
10-13 安装mysql数据库服务
一,配置主从同步结构
1.1 配置主主结构 10 / 11
共同配置
虚拟机10上:用户授权 启动binlog日志 重启数据库服务 管理员登录指定主库信息
mysql> grant replication slave on *.* to slaveuser@"%" identified by '123456';
[root@mysql10 ~]# vim /etc/my.cnf
[mysqld]
server_id=10
log-bin=master10
binlog_format="mixed"
[root@mysql10 ~]# systemctl restart mysqld
mysql> show master status;
| master10.000001 | 154 |
mysql> change master to master_host="192.168.4.11", master_user="slaveuser",master_password="123456",master_log_file="master11.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Relay_Master_Log_File: master13.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
虚拟机11上:用户授权 启用binlog日志 并允许级联复制 重启数据库服务 管理员登录指定主库信息
mysql> grant replication slave on *.* to slaveuser@"%" identified by '123456';
[root@mysql11 mysql]# vim /etc/my.cnf
[mysqld]
server_id=11
log-bin=master11
binlog_format="mixed"
log_slave_updates
[root@mysql11 mysql]# systemctl stop mysqld
[root@mysql11 mysql]# systemctl start mysqld
mysql> show master status;
| master11.000001 | 154 |
mysql> change master to master_host="192.168.4.10", master_user="slaveuser",master_password="123456",master_log_file="master10.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Relay_Master_Log_File: master10.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
配置一主多从结构(把12,13分别配置11的从库)
虚拟机12上
[root@mysql12 ~]# vim /etc/my.cnf
[mysqld]
server_id=12
[root@mysql12 ~]# systemctl stop mysqld
[root@mysql12 ~]# systemctl start mysqld
mysql> change master to master_host="192.168.4.11", master_user="slaveuser",master_password="123456",master_log_file="master11.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
虚拟机13上
[root@mysql13 ~]#vim /etc/my.cnf
[mysqld]
server_id=13
[root@mysql13 ~]#systemctl stop mysqld
[root@mysql13 ~]#systemctl start mysqld
mysql> change master to master_host="192.168.4.11", master_user="slaveuser",master_password="123456",master_log_file="master11.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
虚拟机10上:
在10主机上添加访问用户guser 能够在其他3台主机上也有相同的授权用户
mysql> create database gamedb;
mysql> grant all on gamedb.* to guser@"%" identified by "123456";
在客户端245 使用授权用户guser 连接10服务器 产生的新数据放在其他3台主机上也有
[root@room1pc32 桌面]# mysql -h292.168.4.10 -uguser -p123456
MySQL [(none)]> create table gamedb.a(id int);
MySQL [(none)]> insert into gamedb.a values(100);
MySQL [(none)]> insert into gamedb.a values(100);
MySQL [(none)]> insert into gamedb.a values(100);
二,配置mysql-mmm
mysql-mmm介绍:
监控服务: 运行在管理节点上 用来监控数据节点
代理服务: 运行在数据节点 用来提供系统给监控主机
1)在所有主机上安装mysql-mmm软件 (10-13,120)
yum -y install perl-*
tar -zxvf mysql-mmm.zip
unzip mysql-mmm.zip
cd mysql-mmm/
tar -zxvf mysql-mmm-2.2.1.tar.gz
cd mysql-mmm-2.2.1/
make install
ls /etc/mysql-mmm/
mmm_agent.conf mmm_common.conf mmm_mon.conf mmm_tools.conf
2)修改配置文件
a.修改数据节点代理服务配置文件(10 11 12 13)
[root@mysql10 ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db10#自定义名称
[root@mysql11 ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db11
[root@mysql12 ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db12
[root@mysql13 ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db13
b.修改管理节点监控服务的配置文件(120)
[root@client120 ~]# vim /etc/mysql-mmm/mmm_mon.conf
include mmm_common.conf
<monitor>
ip 192.168.4.120
pid_path /var/run/mmm_mond.pid
bin_path /usr/lib/mysql-mmm/
status_path /var/lib/misc/mmm_mond.status
ping_ips 192.168.4.10, 192.168.4.11, 192.168.4.12, 192.168.4.13
</monitor>
<host default>
monitor_user monitor#监视用户名
monitor_password 123456#监视用户密码
</host>
debug 00不显示调试信息1显示调试信息
c.修改公共文件(10,11,12,13,120)
vim /etc/mysql-mmm/mmm_common.conf
10 replication_user slaveuser#代理用户
11 replication_password 123456
12
13 agent_user agent#数据库
14 agent_password 123456
17 <host db10>#修改四台服务器
18 ip 192.168.4.10
19 mode master
20 peer db11
21 </host>
22
23 <host db11>
24 ip 192.168.4.11
25 mode master
26 peer db10
27 </host>
28
29 <host db12>
30 ip 192.168.4.12
31 mode slave
32 </host>
33
34 <host db13>
35 ip 192.168.4.13
36 mode slave
37 </host>
39 <role writer>
40 hosts db10, db11
41 ips 192.168.4.100
42 mode exclusive
43 </role>
44
45 <role reader>
46 hosts db12, db13
47 ips 192.168.4.102, 192.168.4.105
48 mode balanced
49 </role>
d.根据配置文件的设置,在数据节点上添加对应的授权用户
monitor
agent
3)在虚拟机10上 授权
mysql> grant replication client on *.* to monitor@"%" identified by "123456";
mysql> grant replication client,process,super on *.* to agent@"%" identified by "123456";
4)其他三台测试
mysql> select user,host from mysql.user where user in ('agent','monitor');
三,启动服务
a.启动数据节点主机代理服务(10-13):安装服务运行依赖软件包 安装获取vip地址软件包 启动服务
cd /root/mysql-mmm/
tar -zxf Algorithm-Diff-1.1902.tar.gz
cd Algorithm-Diff-1.1902/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
tar -zxf Proc-Daemon-0.03.tar.gz
cd Proc-Daemon-0.03/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
rpm -ivh --nodeps perl-Log-Log4perl-1.26-1.el6.rf.noarch.rpm
/etc/init.d/mysql-mmm-agent start
/etc/init.d/mysql-mmm-agent status
netstat -pantu | grep mmm
netstat -pantu | grep :9989
tcp 0 0 192.168.4.11:9989 0.0.0.0:* LISTEN 10059/mmm_agentd
yum -y install gcc gcc-c++
cd /root/mysql-mmm/
gunzip Net-ARP-1.0.8.tgz
tar -xf Net-ARP-1.0.8.tar
cd Net-ARP-1.0.8/
perl Makefile.PL
make
make install
b.启动管理节点主机监控服务 (120):安装服务运行软件包 启动服务
cd /root/mysql-mmm/
tar -zxf Algorithm-Diff-1.1902.tar.gz
cd Algorithm-Diff-1.1902/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
tar -zxf Proc-Daemon-0.03.tar.gz
cd Proc-Daemon-0.03/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
rpm -ivh --nodeps perl-Log-Log4perl-1.26-1.el6.rf.noarch.rpm
/etc/init.d/mysql-mmm-monitor start
/etc/init.d/mysql-mmm-monitor status
netstat -pantu | grep mmm_mond
netstat -pantu | grep 9988
tcp 0 0 192.168.4.120:9988 0.0.0.0:* LISTEN 30047/mmm_mond
四,验证mysql-mmm的配置
a 查看数据库节点上的数据库服务是运行的
IO线程和SQ线程 是否OK
[root@mysql12 ~]# mysql -uroot -p123456 -e"show slave status\G;" | grep -i yes
mysql: [Warning] Using a password on the command line interface can be insecure.
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
b.在监控服务器本机登录管理界面查看,查看数据库服务状态
[root@client120 ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/AWAITING_RECOVERY. Roles:
db11(192.168.4.11) master/AWAITING_RECOVERY. Roles:
db12(192.168.4.12) slave/AWAITING_RECOVERY. Roles:
db13(192.168.4.13) slave/AWAITING_RECOVERY. Roles:
[root@client120 ~]# mmm_control set_online db10
[root@client120 ~]# mmm_control set_online db11
[root@client120 ~]# mmm_control set_online db12
[root@client120 ~]# mmm_control set_online db13
[root@client120 ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/ONLINE. Roles: writer(192.168.4.100)
db11(192.168.4.11) master/ONLINE. Roles:
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
c.在数据接待年本机查看是否获取到vip地址
[root@client120 ~]# ping -c 2 192.168.4.100
PING 192.168.4.100 (192.168.4.100) 56(84) bytes of data.
64 bytes from 192.168.4.100: icmp_seq=1 ttl=64 time=0.367 ms
64 bytes from 192.168.4.100: icmp_seq=2 ttl=64 time=0.383 ms
[root@mysql10 Net-ARP-1.0.8]# ip addr show | grep 192.168.4.
inet 192.168.4.10/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.100/32 scope global eth0
[root@mysql12 ~]# ip addr show | grep 192.168.4.
inet 192.168.4.12/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.105/32 scope global eth0
[root@mysql13 ~]# ip addr show | grep 192.168.4.
inet 192.168.4.13/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.102/32 scope global eth0
d.客户端连接VIP访问数据库服务
[root@room1pc32 桌面]# mysql -h292.168.4.100 -uguser -p123456
MySQL [(none)]> select @@hostname;
+---------------------+
| @@hostname |
+---------------------+
| mysql10 |
+---------------------+
模拟 虚拟机10挂掉
[root@mysql10 ~]# systemctl stop mysqld
[root@client120 ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/HARD_OFFLINE. Roles:
db11(192.168.4.11) master/ONLINE. Roles: writer(192.168.4.100)
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
[root@mysql13 ~]# ip addr show | grep 192.168.4
inet 192.168.4.11/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.100/32 scope global eth0
MySQL [(none)]> select @@hostname;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 1900
Current database: *** NONE ***
+---------------------+
| @@hostname |
+---------------------+
| mysql11 |
+---------------------+
1 row in set (0.00 sec)
模拟 虚拟机10 故障修好了
[root@mysql10 ~]# systemctl start mysqld
[root@client120 ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/AWAITING_RECOVERY. Roles
db11(192.168.4.11) master/ONLINE. Roles: writer(192.168.4.100):
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
[root@client120 ~]# mmm_control set_online db10
[root@client120 ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/ONLINE. Roles:
db11(192.168.4.11) master/ONLINE. Roles: writer(192.168.4.100)
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
10不会立即占用VIP地址 当11 出现故障时 10 会重新获得VIP地址
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