搭建分布式数据库负载均衡运行环境的一些配置记录（个人记事本）

配置my.cnf

修改mycat/conf/server.xml文件,具体修改如下在底部对应部分加上

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

修改mycat/conf/schema.xml文件,具体修改如下

<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">
        <schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">
                <table name="travelrecord" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" />
                <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" dataNode="dn1,dn2,dn3"
                        rule="mod-long" />
                <!-- <table name="dual" primaryKey="ID" dataNode="dnx,dnoracle2" type="global" 
                        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>
        <!-- <dataNode name="dn1$0-743" dataHost="master" database="db$0-743" 
                        /> -->
        <dataNode name="dn1" dataHost="master" database="db1" />
        <dataNode name="dn2" dataHost="master" database="db2" />
        <dataNode name="dn3" dataHost="master" database="db3" />
        <dataHost name="master" 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="hostM1" url="173.16.80.70:3307" user="root"
                        password="root">
                        <!-- can have multi read hosts -->
                </writeHost>
                <writeHost host="host1M1" url="173.16.80.70:3305" user="root"
                        password="root"/>
                <writeHost host="host2M1" url="173.16.80.104:3307" user="root"
                        password="root">
                        <!-- can have multi read hosts -->
                </writeHost>
                <writeHost host="host3M1" url="173.16.80.104:3305" user="root"
                        password="root"/>


                <!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
        </dataHost>

</mycat:schema>

修改mycat/conf/wrapper.conf文件,具体修改如下

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1. 找到wrapper.java.command=java 将其改为wrapper.java.command=%JAVA_HOME%/bin/java  

sudo yum install haproxy

一般在/etc/haproxy

编辑配置文件 sudo vi haproxy.cfg

global
    log         127.0.0.1 local2
    chroot      /var/lib/haproxy
    pidfile     /var/run/haproxy.pid
    maxconn     4000
    user        root
    group       root
    daemon


    # turn on stats unix socket
    stats socket /var/lib/haproxy/stats


defaults
    log global
    mode http
    option http-keep-alive
    option httplog
    timeout connect 5000ms
    timeout client 10000ms
    timeout server 50000ms
    timeout http-request 20000ms
    balance roundrobin


listen stats
    mode http
    log 127.0.0.1 local0 err
    bind  0.0.0.0:1088
    stats enable
    stats hide-version
    stats uri     /stats
    stats refresh 30s
    stats auth    admin:admin
    stats admin if TRUE


listen tomcat
    bind 0.0.0.0:5222
    mode http
    maxconn 300
    log 127.0.0.1 local0 debug
    balance roundrobin
    server  static1 173.16.80.104:3020 check inter 2000 fall 3 weight 30
    server  static2 173.16.80.70:8090 check inter 2000 fall 3 weight 30

/etc/keepalived/keepalived.conf

! Configuration File for keepalived


global_defs {
   notification_email {
     1191330156@qq.com
   }
   notification_email_from chenwb #配置发件人
   smtp_server 127.0.0.1 #配置邮件服务器
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_script chk_haproxy {
    script"/etc/keepalived/chk_haproxy.sh"
    interval 1
    weight -10
    #fall 3
}


vrrp_instance VI_1 {
    state MASTER  #BACKUP配置模式
    interface ens33
    virtual_router_id 55
    priority 100#优先级
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
       173.16.80.247#虚拟IP地址
    }
    track_script {
        chk_haproxy
}
}