CentOS7.5 搭建mycat1.6.6
2024-09-29 05:46:38
1、环境及版本
操作系统: CentOS 7.5
MySQL:5.7.23
jdk:1.8.0_191
MyCat:1.6.6.1
cat /etc/centos-release
mysql -V
java -version
2、安装包准备
下载网站:http://dl.mycat.io/1.6.6/
【2】上传至linux服务器:
mkdir /home/rhr/soft/mycat
cd /home/rhr/soft/mycat
rz
3、开始安装
【1】解压
tar -zxvf Mycat-server-1.6-RELEASE-20161028204710-linux.tar.gz
【2】安装tree(可选,使目录结构更好看)
yum -y install tree
查看tree:
4、创建用户并修改配置文件
【1】为了更好的进入mycat,设置MYCAT_HOME的变量
vim /etc/profile
添加绿色部分:
export JAVA_HOME=/home/rhr/soft/jdk/jdk1.8.0_191
export MYCAT_HOME=/home/rhr/soft/mycat/mycat
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:/usr/local/mysql/bin:$MYCAT_HOME/bin:$PATH
使得变量生效
source /etc/profile
检查
【2】配置mycat文件
(1)修改server.xml
cd home/rhr/soft/mycat/mycat/conf
cp server.xml server_bak.xml
vim server.xml
修改前:
修改后:
(2)修改schema.xml
1) 修改schema 标签
修改前:
<schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">
<!-- auto sharding by id (long) -->
<table name="travelrecord" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" /> <!-- global table is auto cloned to all defined data nodes ,so can join
with any table whose sharding node is in the same data node -->
<table name="company" primaryKey="ID" type="global" dataNode="dn1,dn2,dn3" />
<table name="goods" primaryKey="ID" type="global" dataNode="dn1,dn2" />
<!-- random sharding using mod sharind rule -->
<table name="hotnews" primaryKey="ID" autoIncrement="true" dataNode="dn1,dn2,dn3" rule="mod-long" />
<!-- <table name="dual" primaryKey="ID" dataNode="dnx,dnoracle2" type="global"
needAddLimit="false"/> <table name="worker" primaryKey="ID" dataNode="jdbc_dn1,jdbc_dn2,jdbc_dn3" rule="mod-long" /> -->
<table name="employee" primaryKey="ID" dataNode="dn1,dn2" rule="sharding-by-intfile" />
<table name="customer" primaryKey="ID" dataNode="dn1,dn2" rule="sharding-by-intfile">
<childTable name="orders" primaryKey="ID" joinKey="customer_id" parentKey="id">
<childTable name="order_items" joinKey="order_id" parentKey="id" />
</childTable>
<childTable name="customer_addr" primaryKey="ID" joinKey="customer_id" parentKey="id" />
</table>
<!-- <table name="oc_call" primaryKey="ID" dataNode="dn1$0-743" rule="latest-month-calldate" /> -->
</schema>
修改后:
<schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">
<!-- auto sharding by id (long) -->
<table name="travelrecord" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" /> <!-- global table is auto cloned to all defined data nodes ,so can join
with any table whose sharding node is in the same data node --> <table name="company" primaryKey="company_id" type="global" dataNode="dn1,dn2,dn3" />
<table name="goods" primaryKey="goods_id" type="global" dataNode="dn1,dn2" /> <!-- random sharding using mod sharind rule -->
<table name="hotnews" primaryKey="hotnews_id" autoIncrement="true" dataNode="dn1,dn2,dn3" rule="mod-long" /> <!-- <table name="dual" primaryKey="ID" dataNode="dnx,dnoracle2" type="global"
needAddLimit="false"/> <table name="worker" primaryKey="ID" dataNode="jdbc_dn1,jdbc_dn2,jdbc_dn3" rule="mod-long" /> --> <table name="employee" primaryKey="employee_id" dataNode="dn1,dn2" rule="sharding-by-intfile" /> <table name="customer" primaryKey="customer_id" dataNode="dn1,dn2" rule="sharding-by-murmur">
<childTable name="orders" primaryKey="order_id" joinKey="customer_id" parentKey="customer_id">
<childTable name="order_items" joinKey="order_id" parentKey="order_id" />
</childTable>
<childTable name="customer_addr" primaryKey="customer_addr_id" joinKey="customer_id" parentKey="customer_id" />
</table>
<!-- <table name="oc_call" primaryKey="ID" dataNode="dn1$0-743" rule="latest-month-calldate" /> -->
</schema>
2) 修改schema 标签
修改前
<!-- can have multi write hosts -->
<writeHost host="hostM1" url="localhost:3306" user="root" password="123">
<!-- can have multi read hosts -->
<readHost host="hostS2" url="localhost:3306" user="root" password="123" />
</writeHost>
<writeHost host="hostS1" url="localhost:3306" user="root" password="123" />
<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
修改后:
<!-- can have multi write hosts -->
<writeHost host="hostM1" url="localhost:3306" user="root" password="YYBrhr_2018">
<!-- can have multi read hosts -->
<!-- <readHost host="hostS2" url="localhost:3306" user="root" password="123" /> -->
</writeHost>
<!-- <writeHost host="hostS1" url="localhost:3306" user="root" password="123" /> -->
<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
</dataHost>
(3)修改role.xml
修改前:
<tableRule name="sharding-by-intfile">
<rule>
<columns>sharding_id</columns>
<algorithm>hash-int</algorithm>
</rule>
</tableRule>
<tableRule name="auto-sharding-long">
<rule>
<columns>id</columns>
<algorithm>rang-long</algorithm>
</rule>
</tableRule>
<tableRule name="mod-long">
<rule>
<columns>id</columns>
<algorithm>mod-long</algorithm>
</rule>
</tableRule>
<tableRule name="sharding-by-murmur">
<rule>
<columns>id</columns>
<algorithm>murmur</algorithm>
</rule>
</tableRule>
修改后:
<tableRule name="sharding-by-intfile">
<rule>
<columns>employee_id</columns>
<algorithm>hash-int</algorithm>
</rule>
</tableRule>
<tableRule name="auto-sharding-long">
<rule>
<columns>id</columns>
<algorithm>rang-long</algorithm>
</rule>
</tableRule>
<tableRule name="mod-long">
<rule>
<columns>hotnews_id</columns>
<algorithm>mod-long</algorithm>
</rule>
</tableRule>
<tableRule name="sharding-by-murmur">
<rule>
<columns>customer_id</columns>
<algorithm>murmur</algorithm>
</rule>
</tableRule>
5、启动mycat并测试
【1】启动mycat
mycat start
mycat status
【2】测试
mysql -u root -p -P8066 -h 127.0.0.1
这里输入的密码,是在/home/rhr/soft/mycat/mycat/conf/server.xml里面看到的密码
这样就说明安装成功了,安装或者启动mycat之前
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