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MySQL+Amoeba+MySQLMMM高可用群集

發(fā)布時(shí)間：2020-07-13 17:09:10 來源：網(wǎng)絡(luò) 閱讀：526 作者：CallousMaster 欄目：MySQL數(shù)據(jù)庫

一、MySQL-MMM(Master-Master MySQL)

MMM概述

雙主故障切換和日常管理的腳本程序
由多個(gè)mysql主服務(wù)器和多個(gè)mysql從服務(wù)器組成
雖然叫做雙主復(fù)制，但是業(yè)務(wù)上同一時(shí)刻只允許對(duì)一個(gè)主進(jìn)行寫入，另一臺(tái)備選主上提供部分讀服務(wù)，
MMM使用Perl語言開發(fā)，主要用來監(jiān)控和管理MySQL Master-Master（雙主）復(fù)制
其內(nèi)部附加的工具腳本也可以實(shí)現(xiàn)多個(gè)slave的read負(fù)載均衡。

注：

同一時(shí)刻只允許一個(gè)主進(jìn)行寫入，額外主提供部分讀的服務(wù)
不適用于要求數(shù)據(jù)一致性很高的場(chǎng)合(可替換產(chǎn)品為：Heartbeat+DRBD+MySQL高可用方案)

MMM組成

mmm_mond：監(jiān)控進(jìn)程，負(fù)責(zé)所有的監(jiān)控、決定和處理所有節(jié)點(diǎn)
mmm_agentd：運(yùn)行在每個(gè)MySQL數(shù)據(jù)庫的代理進(jìn)程，完成監(jiān)控本地狀態(tài)并于監(jiān)控端通信
mmm_control：一個(gè)腳本，提供mmm_mond進(jìn)程的命令

二、案例

實(shí)驗(yàn)環(huán)境：
六臺(tái)Centos6,兩臺(tái)主mysql（master01、master02）,兩臺(tái)從mysql（slave01、slave02）,一臺(tái)監(jiān)控（mmm_mond）,一臺(tái)讀寫調(diào)度器（amoeba）

先部署主主（master01與master02）復(fù)制

Master01

1.準(zhǔn)備工作

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-eth2
    DEVICE=eth2
    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源配置并安裝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配置

/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.授權(quán)并主主同步

mysql -u root -p
mysql> 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等信息都為第二臺(tái)主的信息
mysql> start slave;
mysql> show slave status\G;
//查看同步狀態(tài)，I/0和SQL線程狀態(tài)為yes則正確

Master02

1.準(zhǔn)備工作

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-eth2
    DEVICE=eth2
    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=db2

reboot

2.YUM源配置并安裝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配置

/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.授權(quán)并主主同步

mysql -u root -p
mysql> 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等信息都為第一臺(tái)主的信息
mysql> start slave;
mysql> show slave status\G;

再部署兩對(duì)主從復(fù)制（m1與s1，m2與s2）

Slave01

1.準(zhǔn)備工作

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-eth2
    DEVICE=eth2
    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源配置并安裝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配置

/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.授權(quán)并主從同步（m1,s1）

mysql -u root -p
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等信息都為第一臺(tái)主的信息
mysql> start slave;
mysql> show slave status\G;

Slave02

1.準(zhǔn)備工作

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-eth2
    DEVICE=eth2
    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源配置并安裝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配置

/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.授權(quán)并主從同步（m2,s2）

mysql -u root -p
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=647;
//所跟IP、log、pos等信息都為第二臺(tái)主的信息
mysql> start slave;
mysql> show slave status\G;

配置高可用MySQL-MMM

Master01

1.新建授權(quán)用戶

mysql> grant super,replication client,process on *.* to 'mmm_agent'@'192.168.1.%' identified by '123';//主服務(wù)器授權(quán)，從服務(wù)器自動(dòng)同步
mysql> grant replication client on *.* to 'mmm_monitor'@'192.168.1.%' identified by '123';           //主服務(wù)器授權(quán)，從服務(wù)器自動(dòng)同步
mysql> grant all on *.* to 'test'@'192.168.1.%' identified by '123';                    //新建測(cè)試用戶

2.配置MMM_COMMON

vim /etc/mysql-mmm/mmm_common.conf
    active_master_role      writer
    <host default>
            cluster_interface       eth0                    //集群IP承載的接口
            pid_path                /var/run/mysql-mmm/mmm_agentd.pid       //PID文件位置(存放MMM的進(jìn)程號(hào))
            bin_path                /usr/libexec/mysql-mmm/         //運(yùn)行命令位置
            replication_user        slave                   //需使用主從同步時(shí)授權(quán)用戶
            replication_password    123
            agent_user              mmm_agent                   //代理連接
            agent_password          123
    </host>
    <host db1>
            ip      192.168.1.10
            mode    master
            peer    db2                     //當(dāng)db1主機(jī)不能使用，自動(dòng)切換到db2
    </host>
    <host db2>
            ip      192.168.1.20
            mode    master                  //當(dāng)前服務(wù)器作為主服務(wù)器(寫)
            peer    db1                     //當(dāng)db2主機(jī)不能使用，自動(dòng)切換到db1
    </host>
    <host db3>
            ip      192.168.1.30
            mode    slave
    </host>
    <host db4>
            ip      192.168.1.40
            mode    slave                   //當(dāng)前主機(jī)作為從服務(wù)器(讀)
    </host>
    <role writer>
            hosts   db1, db2
            ips     192.168.1.250               //寫服務(wù)器VIP
            mode    exclusive                   //只有一個(gè)host可以writer
    </role>
    <role reader>
            hosts   db3, db4
            ips     192.168.1.251, 192.168.1.252        //讀服務(wù)器VIP
            mode    balanced                    //多個(gè)host可以reader
    </role>

3.配置MMM_AGENT

vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db1

4.拷貝文件給其余主機(jī)

scp /etc/mysql-mmm/mmm_common.conf root@192.168.1.20:/etc/mysql-mmm/
scp /etc/mysql-mmm/mmm_common.conf root@192.168.1.30:/etc/mysql-mmm/
scp /etc/mysql-mmm/mmm_common.conf root@192.168.1.40:/etc/mysql-mmm/

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

Master02

配置MMM_AGENT

vim /etc/mysql-mmm/mmm_agent.conf
this db2

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

Slave01

配置MMM_AGENT

vim /etc/mysql-mmm/mmm_agent.conf
this db3

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

Slave02

配置MMM_AGENT

vim /etc/mysql-mmm/mmm_agent.conf
this db4

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

監(jiān)控配置（mmm_mon）

1.準(zhǔn)備工作

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-eth2
    DEVICE=eth2
    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源配置并安裝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.配置MMM_COMMON

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

4.配置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>
    <host default>
            monitor_user        mmm_monitor
            monitor_password    123
    </host>
    debug 0

5.啟動(dòng)服務(wù)并驗(yàn)證

/etc/init.d/mysql-mmm-monitor restart && chkconfig --level 35 mysql-mmm-monitor on  //監(jiān)控端啟動(dòng)

mmm_control show                                    //查看節(jié)點(diǎn)狀態(tài)

mysql -u test -p -h 192.168.1.250

報(bào)錯(cuò)解決方案：

[root@localhost ~]# mysql -u test -p -h 192.168.1.250
Enter password:
ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.1.254' (113)

主服務(wù)器：

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';

日志查看：

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

tail -f /var/log/mysql-mmm/mmm_mond.log                     //監(jiān)控機(jī)端的Monitor日志

部署讀寫調(diào)度器Amoeba

1.環(huán)境準(zhǔn)備

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.安裝jdk與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/profile
export JAVA_HOME=/usr/local/jdk1.6
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
export PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/bin/:$PATH:$HOME/bin
export AMOEBA_HOME=/usr/local/amoeba
export PATH=$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.在主Mysql數(shù)據(jù)庫新建授權(quán)用戶

mysql -u root -p
    mysql> grant all on *.* to haha@'192.168.1.%' identified by '123';

4.編輯amoeba配置文件

vim /usr/local/amoeba/conf/amoeba.xml
 30                <property name="user">hehe</property>            //設(shè)置連接Amoeba用戶
 31
 32                <property name="password">123</property>         //設(shè)置連接Amoeba用戶
115                 <property name="defaultPool">slaves</property>
116
117                 <property name="writePool">master</property>        注意刪除<!--  -->的注釋
118                 <property name="readPool">slaves</property>         //定義讀服務(wù)器池

vim /usr/local/amoeba/conf/dbServers.xml
 25                         <!-- mysql user -->
 26                         <property name="user">haha</property>               //設(shè)置連接Mysql的用戶
 27
 28                         <property name="password">123</property>                //設(shè)置連接mysql的密碼
注意刪除<!--  -->的注釋
 43         <dbServer name="master"  parent="abstractServer">
 44                 <factoryConfig>
 45                         <!-- mysql ip -->
 46                         <property name="ipAddress">192.168.1.254</property>         //定義寫服務(wù)器IP
 47                 </factoryConfig>
 48         </dbServer>
 49         <dbServer name="slave1"  parent="abstractServer">
 50                 <factoryConfig>
 51                         <!-- mysql ip -->
 52                         <property name="ipAddress">192.168.1.30</property>          //定義讀服務(wù)器IP
 53                 </factoryConfig>
 54         </dbServer>
 55         <dbServer name="slave2"  parent="abstractServer">
 56                 <factoryConfig>
 57                         <!-- mysql ip -->
 58                         <property name="ipAddress">192.168.1.40</property>          //定義讀服務(wù)器IP
 59                 </factoryConfig>
 60
 61         </dbServer>
 62         <dbServer name="slaves" virtual="true">
 68                         <property name="poolNames">slave1,slave2</property>     //定義輸入slaves讀服務(wù)器池的主機(jī)
 69                 </poolConfig>

amoeba start &

netstat -utpln | grep 8066

5.連接測(cè)試

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

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