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',\040
master_log_pos=732;

start slave;

 show slave status\G

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