mycay 中间件 mysql主从读写分离搭建配置

一，安装java

1.1 检查系统有没有自带安装java
rpm -qa | grep java
1.2 如果有则卸载
rpm -e java

1.3 安装java-1.8

yum install java-1.8.0-openjdk* -y

1.4 使用命令检查是否安装成功
java -version

二，安装mycat
2.1 下载
wget http://dl.mycat.io/1.6-RELEASE/Mycat-server-1.6-RELEASE-20161028204710-linux.tar.gz

2.2 解压到并剪接到  /usr/local/
tar xvf Mycat-server-1.6-RELEASE-20161028204710-linux.tar.gz
mv mycat /usr/local/

2.3 设置环境变量

vi /etc/profile

export  PATH=$PATH:/usr/local/mycat   #在文件最后面增加

source /etc/profile


三，配置文件配置

1， schema.xml 这个配置文件主要用来配置数据库节点，逻辑表 等东西的

<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">

        <schema name="zabbix"  checkSQLschema="false" sqlMaxLimit="5000" dataNode="dn1"></schema>
        <!-- <dataNode name="dn1$0-743" dataHost="localhost1" database="db$0-743"
                /> -->
        <dataNode name="dn1" dataHost="localhost1" database="zabbix" />
        <dataHost name="localhost1" maxCon="1000" minCon="10" balance="0"
                          writeType="0" dbType="mysql" dbDriver="native" switchType="1"  slaveThreshold="100">
                <heartbeat>select user()</heartbeat>
                <!-- can have multi write hosts -->
                <writeHost host="hostM1" url="192.168.66.89:3301" user="vkel"
                                   password="sz1card1">   <!-- 写数据库配置 -->
                        <!-- can have multi read hosts -->
                        <readHost host="hostS1" url="192.168.66.89:3302" user="vkel" password="sz1card1" /> <!-- 读数据库配置 -->
                </writeHost>
                <!--<writeHost host="hostS1" url="localhost:3316" user="root"
                                   password="123456" /> -->
                <!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
        </dataHost>
        <!--
                <dataHost name="sequoiadb1" maxCon="1000" minCon="1" balance="0" dbType="sequoiadb" dbDriver="jdbc">
                <heartbeat>             </heartbeat>
                 <writeHost host="hostM1" url="sequoiadb://1426587161.dbaas.sequoialab.net:11920/SAMPLE" user="jifeng"  password="jifeng"></writeHost>
                 </dataHost>

          <dataHost name="oracle1" maxCon="1000" minCon="1" balance="0" writeType="0"   dbType="oracle" dbDriver="jdbc"> <heartbeat>select 1 from dual</heartbeat>
                <connectionInitSql>alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss'</connectionInitSql>
                <writeHost host="hostM1" url="jdbc:oracle:thin:@127.0.0.1:1521:nange" user="base"       password="123456" > </writeHost> </dataHost>

                <dataHost name="jdbchost" maxCon="1000"         minCon="1" balance="0" writeType="0" dbType="mongodb" dbDriver="jdbc">
                <heartbeat>select       user()</heartbeat>
                <writeHost host="hostM" url="mongodb://192.168.0.99/test" user="admin" password="123456" ></writeHost> </dataHost>

                <dataHost name="sparksql" maxCon="1000" minCon="1" balance="0" dbType="spark" dbDriver="jdbc">
                <heartbeat> </heartbeat>
                 <writeHost host="hostM1" url="jdbc:hive2://feng01:10000" user="jifeng"         password="jifeng"></writeHost> </dataHost> -->

        <!-- <dataHost name="jdbchost" maxCon="1000" minCon="10" balance="0" dbType="mysql"
                dbDriver="jdbc"> <heartbeat>select user()</heartbeat> <writeHost host="hostM1"
                url="jdbc:mysql://localhost:3306" user="root" password="123456"> </writeHost>
                </dataHost> -->
</mycat:schema>



2，接下来配置用户权限,系统变量 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">1</property>  <!-- 1为开启实时统计、0为关闭 -->
        <property name="useGlobleTableCheck">1</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>
        <property name="charset">utf8mb4</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">123456</property>
                <property name="schemas">zabbix</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>

        <user name="user">
                <property name="password">user</property>
                <property name="schemas">zabbix</property>
                <property name="readOnly">true</property>
        </user>

</mycat:server>

三，启动mycat
/usr/local/mycat start