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  • mycat 管理MySQL5.7主从搭建

    1.首先安装MySQL ab:

    192.168.6.163 master

    192.168.6.167 slave

    master: vi /etc/opt/rh/rh-mysql57/my.cnf.d/rh-mysql57-mysql-server.cnf

    log-bin=mysql-bin

    server-id=101

     grant replication slave on *.* to replica@'%' identified by 'password'; 

    flush privileges;

    exit

    slave:vi /etc/opt/rh/rh-mysql57/my.cnf.d/rh-mysql57-mysql-server.cnf

    log-bin=mysql-bin
    server-id=102
    read_only=1
    report-host=node01.srv.world

    systemctl restart rh-mysql57-mysqld 

    master:

    flush tables with read lock; 

    show master status; 

    mysqldump -u root -p --all-databases --lock-all-tables --events > mysql_dump.sql 

    unlock tables;

    scp mysql_dump.sql node01.srv.world:/tmp/ 

    slave:

    mysql -u root -p < /tmp/mysql_dump.sql 

    change master to
    master_host='192.168.6.163',
    master_user='replica',
    master_log_file='mysql-bin.000001',40
    master_log_pos=732;

    start slave;

     show slave statusG

    安装成功;

    2.安装mycat

    首先配置jdk:

    jdk-8u73-linux-x64.rpm 这个直接yum -y install 

    解压:Mycat-server-1.6-RELEASE-20161028204710-linux.tar.gz

    groupadd dba

    useradd -g dba mycat
    passwd mycat
    mkdri /home/mycat/app
    mv mycat /home/mycat/app/mycat

    vim /home/mycat/.bash_profile

    export MYCAT_HOME=/home/mycat/app/mycat
    PATH=$PATH:$MYCAT_HOME/bin
    source .bash_profile

    vim /etc/my.cnf
    lower_case_table_names = 1
    我的server.xml,schema.xml

    [root@java1 ~]# cat $MYCAT_HOME/conf/server.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!-- - - Licensed under the Apache License, Version 2.0 (the "License");
    - you may not use this file except in compliance with the License. - You
    may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0
    - - Unless required by applicable law or agreed to in writing, software -
    distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT
    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the
    License for the specific language governing permissions and - limitations
    under the License. -->
    <!DOCTYPE mycat:server SYSTEM "server.dtd">
    <mycat:server xmlns:mycat="http://io.mycat/">
    <system>
    <property name="useSqlStat">0</property> <!-- 1为开启实时统计、0为关闭 -->
    <property name="useGlobleTableCheck">0</property> <!-- 1为开启全加班一致性检测、0为关闭 -->

    <property name="sequnceHandlerType">2</property>
    <!-- <property name="useCompression">1</property>--> <!--1为开启mysql压缩协议-->
    <!-- <property name="fakeMySQLVersion">5.6.20</property>--> <!--设置模拟的MySQL版本号-->
    <!-- <property name="processorBufferChunk">40960</property> -->
    <!--
    <property name="processors">1</property>
    <property name="processorExecutor">32</property>
    -->
    <!--默认为type 0: DirectByteBufferPool | type 1 ByteBufferArena-->
    <property name="processorBufferPoolType">0</property>
    <!--默认是65535 64K 用于sql解析时最大文本长度 -->
    <!--<property name="maxStringLiteralLength">65535</property>-->
    <!--<property name="sequnceHandlerType">0</property>-->
    <!--<property name="backSocketNoDelay">1</property>-->
    <!--<property name="frontSocketNoDelay">1</property>-->
    <!--<property name="processorExecutor">16</property>-->
    <!--
    <property name="serverPort">8066</property> <property name="managerPort">9066</property>
    <property name="idleTimeout">300000</property> <property name="bindIp">0.0.0.0</property>
    <property name="frontWriteQueueSize">4096</property> <property name="processors">32</property> -->
    <!--分布式事务开关,0为不过滤分布式事务,1为过滤分布式事务(如果分布式事务内只涉及全局表,则不过滤),2为不过滤分布式事务,但是记录分布式事务日志-->
    <property name="handleDistributedTransactions">0</property>

    <!--
    off heap for merge/order/group/limit 1开启 0关闭
    -->
    <property name="useOffHeapForMerge">1</property>

    <!--
    单位为m
    -->
    <property name="memoryPageSize">1m</property>

    <!--
    单位为k
    -->
    <property name="spillsFileBufferSize">1k</property>

    <property name="useStreamOutput">0</property>

    <!--
    单位为m
    -->
    <property name="systemReserveMemorySize">384m</property>


    <!--是否采用zookeeper协调切换 -->
    <property name="useZKSwitch">true</property>


    </system>

    <!-- 全局SQL防火墙设置 -->
    <!--
    <firewall>
    <whitehost>
    <host host="127.0.0.1" user="mycat"/>
    <host host="127.0.0.2" user="mycat"/>
    </whitehost>
    <blacklist check="false">
    </blacklist>
    </firewall>
    -->

    <user name="root">
    <property name="password">*****</property>
    <property name="schemas">information_schema,infosys,mysql,performance_schema,sys</property>

    <!-- 表级 DML 权限设置 -->
    <!--
    <privileges check="false">
    <schema name="TESTDB" dml="0110" >
    <table name="tb01" dml="0000"></table>
    <table name="tb02" dml="1111"></table>
    </schema>
    </privileges>
    -->
    </user>
    </mycat:server>

    [root@java1 logs]# cat ../conf/schema.xml
    <?xml version="1.0"?>
    <!DOCTYPE mycat:schema SYSTEM "schema.dtd">
    <mycat:schema xmlns:mycat="http://io.mycat/">

    <schema name="information_schema" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn1">
    </schema>
    <schema name="infosys" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn2">
    </schema>
    <schema name="mysql" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn3">
    </schema>
    <schema name="performance_schema" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn4">
    </schema>
    <schema name="sys" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn5">
    </schema>
    <dataNode name="dn1" dataHost="192.168.6.163" database="infosys" />
    <dataNode name="dn2" dataHost="192.168.6.163" database="information_schema" />
    <dataNode name="dn3" dataHost="192.168.6.163" database="mysql" />
    <dataNode name="dn4" dataHost="192.168.6.163" database="performance_schema" />
    <dataNode name="dn5" dataHost="192.168.6.163" database="sys" />
    <dataHost name="192.168.6.163" maxCon="1000" minCon="10" balance="2"
    writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
    <heartbeat>select user()</heartbeat>
    <!-- can have multi write hosts -->
    <writeHost host="192.168.6.163" url="192.168.6.167:3306" user="root"
    password="******">
    <!-- can have multi read hosts -->
    <!-- <readHost host="hostS2" url="192.168.6.163:3306" user="root" password="*****" /> -->
    <readHost host="192.168.6.167" url="192.168.6.167:3306" user="root" password="******">
    </readHost>
    </writeHost>
    </dataHost>
    </mycat:schema>

    启动起来:mycat start
    登录:
    [root@java1 ~]# mysql -h192.168.6.168 -uroot -p**** -P 9066
    好了,现在再研究它怎么使用和要出现的问题怎么处理。
    后期 学习下面的,路漫漫啊:
    1, mycat (主从) + mysql (一主多从) 读写分离。
    2, mycat(主从)+ mysql (多主N从) 分库分表。
    3, haproxy + mycat + mysql
    4, haproxy +keepalive+mycat + mysql galera cluster + mysql
    5, mycat + oracle (dg) 读写分离。
    6, mycat+web 监控



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  • 原文地址:https://www.cnblogs.com/Jt00/p/7299113.html
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