Mysql+amoeba+mysqlmmm High-availability clusters

One, mysql-mmm (master-master Replication Manager fo MySQL) MMM overview

• Dual-master failover and routine management procedures
• Consists of multiple MySQL master servers and multiple MySQL slave servers
• MMM is developed using the Perl language and is primarily used to monitor and manage MySQL Master-master (dual master) replication
• Its internal additional tool scripts can also implement read load balancing for multiple slave.

Note:

• Only one master is allowed to write at the same time, and the additional master provides a partial read service

• Not suitable for situations where data consistency is required (replaceable product: heartbeat+drbd+mysql high-availability scenario)

MMM composition

• Mmm_mond: monitoring process, responsible for all monitoring, decision and processing of all nodes
• MMM_AGENTD: Agent process running on each MySQL database, complete monitoring of local state and communication on the monitor side
• Mmm_control: A script that provides commands for the Mmm_mond process

Second, the case

Lab Environment:
Six Centos6, two master MySQL (Master01, Master02), two from MySQL (SLAVE01, SLAVE02), one monitor (Mmm_mond), one read/write scheduler (Amoeba)

Deploy primary master (Master01 and MASTER02) replication first

Master01

1. Preparatory work

vim /etc/sysconfig/network-scripts/ifcfg-eth0    DEVICE=eth0    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=static    IPADDR=192.168.1.10    NETMASK=255.255.255.0

vim /etc/sysconfig/network-scripts/ifcfg-eth1    DEVICE=eth1    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=dhcp

vim /etc/hosts    192.168.1.10    db1    192.168.1.20    db2    192.168.1.30    db3    192.168.1.40    db4

vim /etc/sysconfig/network    HOSTNAME=db1

reboot

2.YUM source configuration and installation of MMM

rm -rf /etc/yum.repos.d/*

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

yum -y install epel-release

yum -y install mysql-mmm* mysql mysql-server mysql-devel

3.MySQL Configuration

/etc/init.d/mysqld start && chkconfig --level 35 mysqld on

mysqladmin -uroot password "123"

cp /usr/share/doc/mysql-server-5.1.73/my-medium.cnf /etc/my.cnf

vim /etc/my.cnf    [mysqld]    50 log-slave-updates

/etc/init.d/mysqld restart

4. Authorization and Master synchronization

mysql -u root -pmysql> grant replication slave on *.* to ‘slave‘@‘192.168.1.%‘ identified by ‘123‘;mysql> show master status;+------------------+----------+--------------+------------------+| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |+------------------+----------+--------------+------------------+| mysql-bin.000001 |      647 |              |                  |+------------------+----------+--------------+------------------+1 row in set (0.00 sec)mysql> change master to master_host=‘192.168.1.20‘,master_user=‘slave‘,master_password=‘123‘,master_log_file=‘mysql-bin.000001‘,master_log_pos=481;//所跟IP、log、pos等信息都为第二台主的信息mysql> start slave;mysql> show slave status\G;//查看同步状态，I/0和SQL线程状态为yes则正确

Master02

1. Preparatory work

vim /etc/sysconfig/network-scripts/ifcfg-eth0    DEVICE=eth0    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=static    IPADDR=192.168.1.20    NETMASK=255.255.255.0

vim /etc/sysconfig/network-scripts/ifcfg-eth1    DEVICE=eth1    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=dhcp

vim /etc/hosts    192.168.1.10    db1    192.168.1.20    db2    192.168.1.30    db3    192.168.1.40    db4

vim /etc/sysconfig/networkHOSTNAME=db2

reboot

2.YUM source configuration and installation of MMM

rm -rf /etc/yum.repos.d/*

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

yum -y install epel-release

yum -y install mysql-mmm* mysql mysql-server mysql-devel

3.MySQL Configuration

/etc/init.d/mysqld start && chkconfig --level 35 mysqld on

mysqladmin -uroot password "123"

cp /usr/share/doc/mysql-server-5.1.73/my-medium.cnf /etc/my.cnf

vim /etc/my.cnf    [mysqld]    50 log-slave-updates    58 server-id = 2

/etc/init.d/mysqld restart

4. Authorization and Master synchronization

mysql -u root -pmysql> grant replication slave on *.* to ‘slave‘@‘192.168.1.%‘ identified by ‘123‘;mysql> show master status;+------------------+----------+--------------+------------------+| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |+------------------+----------+--------------+------------------+| mysql-bin.000001 |      481 |              |                  |+------------------+----------+--------------+------------------+1 row in set (0.00 sec)mysql> change master to master_host=‘192.168.1.10‘,master_user=‘slave‘,master_password=‘123‘,master_log_file=‘mysql-bin.000001‘,master_log_pos=647;//所跟IP、log、pos等信息都为第一台主的信息mysql> start slave;mysql> show slave status\G;

Deploy two more master-slave replications (M1 and s1,m2 and S2)

Slave01

1. Preparatory work

vim /etc/sysconfig/network-scripts/ifcfg-eth0    DEVICE=eth0    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=static    IPADDR=192.168.1.30    NETMASK=255.255.255.0

vim /etc/sysconfig/network-scripts/ifcfg-eth1    DEVICE=eth1    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=dhcp

vim /etc/hosts    192.168.1.10    db1    192.168.1.20    db2    192.168.1.30    db3    192.168.1.40    db4

vim /etc/sysconfig/network    HOSTNAME=db3

reboot

2.YUM source configuration and installation of MMM

rm -rf /etc/yum.repos.d/*

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

yum -y install epel-release

yum -y install mysql-mmm* mysql mysql-server mysql-devel

3.MySQL Configuration

/etc/init.d/mysqld start && chkconfig --level 35 mysqld on

mysqladmin -uroot password "123"

cp /usr/share/doc/mysql-server-5.1.73/my-medium.cnf /etc/my.cnf

vim /etc/my.cnf    [mysqld]    50 relay-log=relay-log-bin    51 relay-log-index=slave-relay-bin.index    59 server-id = 3

/etc/init.d/mysqld restart

4. Authorization and master-Slave synchronization (M1,S1)

mysql -u root -pmysql> change master to master_host=‘192.168.1.10‘,master_user=‘slave‘,master_password=‘123‘,master_log_file=‘mysql-bin.000001‘,master_log_pos=647;//所跟IP、log、pos等信息都为第一台主的信息mysql> start slave;mysql> show slave status\G;

Slave02

1. Preparatory work

vim /etc/sysconfig/network-scripts/ifcfg-eth0    DEVICE=eth0    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=static    IPADDR=192.168.1.40    NETMASK=255.255.255.0

vim /etc/sysconfig/network-scripts/ifcfg-eth1    DEVICE=eth1    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=dhcp

vim /etc/hosts    192.168.1.10    db1    192.168.1.20    db2    192.168.1.30    db3    192.168.1.40    db4

2.YUM source configuration and installation of MMM

rm -rf /etc/yum.repos.d/*

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

yum -y install epel-release

yum -y install mysql-mmm* mysql mysql-server mysql-devel

3.MySQL Configuration

/etc/init.d/mysqld start && chkconfig --level 35 mysqld on

mysqladmin -uroot password "123"

cp /usr/share/doc/mysql-server-5.1.73/my-medium.cnf /etc/my.cnf

vim /etc/my.cnf    [mysqld]    50 relay-log=relay-log-bin    51 relay-log-index=slave-relay-bin.index    59 server-id = 4

/etc/init.d/mysqld restart

4. Authorization and master-Slave synchronization (M2,S2)

mysql -u root -pmysql> change master to master_host=‘192.168.1.20‘,master_user=‘slave‘,master_password=‘123‘,master_log_file=‘mysql-bin.000001‘,master_log_pos=647;//所跟IP、log、pos等信息都为第二台主的信息mysql> start slave;mysql> show slave status\G;

Configuring High-Availability Mysql-mmm

Master01

1. Create a new authorized user

mysql> grant super,replication client,process on *.* to ‘mmm_agent‘@‘192.168.1.%‘ identified by ‘123‘;//主服务器授权，从服务器自动同步mysql> grant replication client on *.* to ‘mmm_monitor‘@‘192.168.1.%‘ identified by ‘123‘;           //主服务器授权，从服务器自动同步mysql> grant all on *.* to ‘test‘@‘192.168.1.%‘ identified by ‘123‘;                    //新建测试用户

2. Configure Mmm_common

vim/etc/mysql-mmm/mmm_common.conf active_master_role writer 

3. Configure Mmm_agent

vim /etc/mysql-mmm/mmm_agent.confinclude mmm_common.confthis db1

4. Copy files to the remaining hosts

scp /etc/mysql-mmm/mmm_common.conf [email protected]:/etc/mysql-mmm/scp /etc/mysql-mmm/mmm_common.conf [email protected]:/etc/mysql-mmm/scp /etc/mysql-mmm/mmm_common.conf [email protected]:/etc/mysql-mmm/

/etc/init.d/mysql-mmm-agent restart && chkconfig --level 35 mysql-mmm-agent on

Master02

Configure Mmm_agent

vim /etc/mysql-mmm/mmm_agent.confthis db2

/etc/init.d/mysql-mmm-agent restart && chkconfig --level 35 mysql-mmm-agent on

Slave01

Configure Mmm_agent

vim /etc/mysql-mmm/mmm_agent.confthis db3

/etc/init.d/mysql-mmm-agent restart && chkconfig --level 35 mysql-mmm-agent on

Slave02

Configure Mmm_agent

vim /etc/mysql-mmm/mmm_agent.confthis db4

/etc/init.d/mysql-mmm-agent restart && chkconfig --level 35 mysql-mmm-agent on

Monitoring Configuration (Mmm_mon) 1. Preparatory work

vim /etc/sysconfig/network-scripts/ifcfg-eth0    DEVICE=eth0    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=static    IPADDR=192.168.1.50    NETMASK=255.255.255.0

vim /etc/sysconfig/network-scripts/ifcfg-eth1    DEVICE=eth1    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=dhcp

vim /etc/hosts    192.168.1.10    db1    192.168.1.20    db2    192.168.1.30    db3    192.168.1.40    db4

reboot

2.YUM source configuration and installation of MMM

rm -rf /etc/yum.repos.d/*

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

yum -y install epel-release

yum -y install mysql-mmm* mysql

3. Configure Mmm_common

scp 192.168.1.10:/etc/mysql-mmm/mmm_common.conf /etc/mysql-mmm/

4. Configure Mmm_mon

vim /etc/mysql-mmm/mmm_mon.conf    include mmm_common.conf    <monitor>            ip                  127.0.0.1            ping_ips            192.168.1.10,192.168.1.20,192.168.1.30,192.168.1.40    </monitor>    

5. Start the service and verify

/etc/init.d/mysql-mmm-monitor restart && chkconfig --level 35 mysql-mmm-monitor on  //监控端启动

mmm_control show                                    //查看节点状态

mysql -u test -p -h 192.168.1.250

Error Resolution:

[[email protected] ~]# mysql -u test -p -h 192.168.1.250Enter password:ERROR 2003 (HY000): Can‘t connect to MySQL server on ‘192.168.1.254‘ (113)

Primary server:

grant super,replication client,process on *.* to ‘mmm_agent‘@‘db1‘ identified by ‘123‘;grant super,replication client,process on *.* to ‘mmm_agent‘@‘db2‘ identified by ‘123‘;grant super,replication client,process on *.* to ‘mmm_agent‘@‘db3‘ identified by ‘123‘;grant super,replication client,process on *.* to ‘mmm_agent‘@‘db4‘ identified by ‘123‘;

Log view:

tail -f /var/log/mysql-mmm/mmm_agentd.log                       //MySQL端的Agent日志

tail -f /var/log/mysql-mmm/mmm_mond.log                     //监控机端的Monitor日志

Deploy read-Write scheduler AMOEBA1. Environment Preparation

vim /etc/sysconfig/network-scripts/ifcfg-eth0    DEVICE=eth0    TYPE=Ethernet    ONBOOT=yes    NM_CONTROLLED=no    BOOTPROTO=static    IPADDR=192.168.1.254    NETMASK=255.255.255.0

2. Installing JDK and Amoeba

yum -y erase java-*

chmod +x jdk-6u14-linux-x64.bin

./jdk-6u14-linux-x64.bin

mv jdk1.6.0_14/ /usr/local/jdk1.6

vim /etc/profileexport JAVA_HOME=/usr/local/jdk1.6export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/libexport PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/bin/:$PATH:$HOME/binexport AMOEBA_HOME=/usr/local/amoebaexport PATH=$PATH:$AMOEBA_HOME/bin

source /etc/profile && java -version

mkdir /usr/local/amoeba

tar zxvf amoeba-mysql-binary-2.2.0.tar.gz -C /usr/local/amoeba/

chmod -R 755 /usr/local/amoeba/

3. Create a new authorized user in the main MySQL database

mysql -u root -p    mysql> grant all on *.* to [email protected]‘192.168.1.%‘ identified by ‘123‘;

4. Edit the Amoeba configuration file

  vim/usr/local/amoeba/conf/amoeba.xml <property name= "user" >hehe</property>                 Set connection Amoeba user <property name= "password" >123</property>//Setup Connection Amoeba user 115 <property name= "Defaultpool" >slaves</property>116117 <property name= "WritePo Ol ">master</property> Note Delete <!----> Comments 118 <property name=" Readpool ">slaves< /property>//define read server pool  

Vim/usr/local/amoeba/conf/dbservers.xml <!--mysql user--26 & Lt;property name= "User" >haha</property>//settings for users connected to MySQL <property n Ame= "Password" >123</property>//Set password to connect MySQL Note Delete <!----> Comments <dbserver name= "M Aster "parent=" Abstractserver "> <factoryConfig> $ <!--mysql IP-                 --<property name= "ipAddress" >192.168.1.254</property>//definition of Write server IP 47 </factoryConfig> <dbserver </dbServer> name= "slave1" parent= "Abstractse                         RVer > <factoryConfig>!--mysql IP--52 <property name= "ipAddress" >192.168.1.30</property>//definition Read server IP </factoryc Onfig> </dbserver> <dbserver name= "slave2" parent= "Abstractserver" > <factoryConfig> <!--mysql IP--<property name= "IpAddress" >192.168.1.         40</property>//define read server IP </factoryConfig> </dbServer> 62 <dbserver name= "Slaves" virtual= "true" > <property name= "poolnames" >slave1,slave2 </property>//define the host for the input slaves read server pool.

amoeba start &

netstat -utpln | grep 8066

5. Connection test

client：mysql -u hehe -p -h 192.168.1.254 -P 8066

Mysql+amoeba+mysqlmmm High-availability clusters