dble主从读写分离范例

Posted 2021-03-01 长城之上是千亿的星空，星空之上是不灭的守望。

1.dble二进制包安装
前提：先安装jdk。

tar -zxvf actiontech-dble-2.19.11.0.tar.gz
mv dble /opt/


2.mysql操作
搭建主库环境
省略......

角色 主机IP server_id 
Master    192.168.119.130:3306 62
Slave    192.168.119.130:3307 63

3.修改配置文件


[root@testdb1 conf]# cat schema.xml
<?xml version="1.0"?>
<!--
  ~ Copyright (C) 2016-2020 ActionTech.
  ~ License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
  -->

<!DOCTYPE dble:schema SYSTEM "schema.dtd">
<dble:schema xmlns:dble="http://dble.cloud/" version="2.0">
 
    <schema name="scott" dataNode="dnscott"></schema>
    <schema name="testdb" dataNode="dntestdb"></schema>
    
    <dataNode name="dnscott" dataHost="testdb1" database="scott"/>
    <dataNode name="dntestdb" dataHost="testdb1" database="testdb"/>
 
    <dataHost name="testdb1" maxCon="1000" minCon="10" balance="2" switchType="-1" slaveThreshold="100">
        <heartbeat>show slave status</heartbeat>
        <!-- can have multi write hosts -->
        <writeHost host="testdb3306" url="192.168.119.130:3306" user="root" password="chengce243">
            <!-- can have multi read hosts  -->
            <readHost host="testdb3307" url="192.168.119.130:3307" user="root" password="chengce243"/> 
        </writeHost>

    </dataHost>
    
</dble:schema>

 
 

[root@testdb1 conf]# cat server.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ Copyright (C) 2016-2020 ActionTech.
  ~ License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
  -->

<!-- - - 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 dble:server SYSTEM "server.dtd">
<dble:server xmlns:dble="http://dble.cloud/" version="2.0">
    <system>

        <property name="sequnceHandlerType">2</property>
        <!-- serverBacklog size,default 2048-->
        <property name="serverBacklog">2048</property>

        <property name="checkTableConsistency">0</property>
        <!-- check periodt, he default period is 60000 milliseconds -->
        <property name="checkTableConsistencyPeriod">60000</property>

        <property name="dataNodeIdleCheckPeriod">300000</property>
        <property name="dataNodeHeartbeatPeriod">10000</property>

        <!-- processor check conn-->
        <property name="processorCheckPeriod">1000</property><!-- unit millisecond -->
        <property name="sqlExecuteTimeout">300</property><!-- unit second -->
        <property name="idleTimeout">1800000</property><!-- unit millisecond -->

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

        <!-- XA transaction -->
        <!-- use XA transaction ,if the mysql service crash,the unfinished XA commit/rollback will retry for several times
       it is the check period for ,default is 1000 milliseconds-->
        <property name="xaSessionCheckPeriod">1000</property>
        <!-- use XA transaction ,the finished XA log will removed. the default period is 1000 milliseconds-->
        <property name="xaLogCleanPeriod">1000</property>
        <!-- true is use JoinStrategy, default false-->
        <property name="useJoinStrategy">true</property>
        <property name="nestLoopConnSize">4</property>
        <property name="nestLoopRowsSize">2000</property>

        <!-- query memory used for per session,unit is M-->
        <property name="otherMemSize">4</property>
        <property name="orderMemSize">4</property>
        <property name="joinMemSize">4</property>
        <property name="bufferPoolChunkSize">4096</property>
        <property name="bufferPoolPageNumber">256</property>
        <property name="bufferPoolPageSize">2097152</property>
        <property name="useSqlStat">0</property>
        <property name="enableSlowLog">0</property>
 
        <property name="flushSlowLogPeriod">1</property>
        <property name="flushSlowLogSize">1000</property>
        <property name="sqlSlowTime">100</property>
 
    </system>
 
    <user name="man1">
        <property name="password">654321</property>
        <property name="manager">true</property>
        <!-- manager user can‘t set schema-->
    </user>

    <user name="root">
        <property name="password">chengce243</property>
        <property name="schemas">scott,testdb</property>
    </user>

    <user name="user">
        <property name="password">user</property> 
        <property name="usingDecrypt">0</property>
        <property name="schemas">scott,testdb</property>
        <property name="readOnly">true</property>
        <property name="maxCon">100</property>
    </user>


</dble:server>
 

 

[root@testdb1 conf]# cat rule.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ Copyright (C) 2016-2020 ActionTech.
  ~ License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
  -->

<!-- - - 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 dble:rule SYSTEM "rule.dtd">
<dble:rule xmlns:dble="http://dble.cloud/" version="2.0">
    <tableRule name="rule_enum">
        <rule>
            <columns>code</columns>
            <algorithm>func_enum</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_range">
        <rule>
            <columns>id</columns>
            <algorithm>func_range</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_common_hash">
        <rule>
            <columns>id</columns>
            <algorithm>func_common_hash</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_common_hash2">
        <rule>
            <columns>id2</columns>
            <algorithm>func_common_hash</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_uneven_hash">
        <rule>
            <columns>id</columns>
            <algorithm>func_uneven_hash</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_mod">
        <rule>
            <columns>id</columns>
            <algorithm>func_mod</algorithm>
        </rule>
    </tableRule>
    <tableRule name="rule_jumpHash">
        <rule>
            <columns>code</columns>
            <algorithm>func_jumpHash</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_hashString">
        <rule>
            <columns>code</columns>
            <algorithm>func_hashString</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_date">
        <rule>
            <columns>create_date</columns>
            <algorithm>func_date</algorithm>
        </rule>
    </tableRule>

    <tableRule name="rule_pattern">
        <rule>
            <columns>id</columns>
            <algorithm>func_pattern</algorithm>
        </rule>
    </tableRule>


    <!-- enum partition -->
    <function name="func_enum" class="Enum">
        <property name="mapFile">partition-enum.txt</property>
        <property name="defaultNode">0</property><!--the default is -1,means unexpected value will report error-->
        <property name="type">0</property><!--0 means key is a number, 1 means key is a string-->
    </function>

    <!-- number range partition -->
    <function name="func_range" class="NumberRange">
        <property name="mapFile">partition-number-range.txt</property>
        <property name="defaultNode">0</property><!--he default is -1,means unexpected value will report error-->
    </function>


    <!-- Hash partition,when partitionLength=1, it is a mod partition-->
    <!--MAX(sum(count*length[i]) must not more then 2880-->
    <function name="func_common_hash" class="Hash">
        <property name="partitionCount">2</property>
        <property name="partitionLength">512</property>
    </function>
    <!-- Hash partition,when partitionLength=1, it is a mod partition-->
    <!--MAX(sum(count*length[i]) must not more then 2880-->
    <function name="func_uneven_hash" class="Hash">
        <property name="partitionCount">2,1</property>
        <property name="partitionLength">256,512</property>
    </function>

    <!-- eg:  mod 4 -->
    <function name="func_mod" class="Hash">
        <property name="partitionCount">4</property>
        <property name="partitionLength">1</property>
    </function>

    <!-- jumpStringHash partition for string-->
    <function name="func_jumpHash" class="jumpStringHash">
        <property name="partitionCount">2</property>
        <property name="hashSlice">0:2</property>
    </function>

    <!-- Hash partition for string-->
    <function name="func_hashString" class="StringHash">
        <property name="partitionCount">4</property>
        <property name="partitionLength">256</property>
        <property name="hashSlice">0:2</property>
        <!--<property name="hashSlice">-4:0</property> -->
    </function>

    <!-- date partition -->
    <!-- 4 case:
    1.set sEndDate and defaultNode: input <sBeginDate ,router to defaultNode; input>sEndDate ,mod the period
    2.set sEndDate, but no defaultNode:input <sBeginDate report error; input>sEndDate ,mod the period
    3.set defaultNode without sEndDate: input <sBeginDate router to defaultNode;input>sBeginDate + (node size)*sPartionDay-1 will report error(expected is defaultNode,but can‘t control now)
    4.sEndDate and defaultNode are all not set: input <sBeginDate report error;input>sBeginDate + (node size)*sPartionDay-1 will report error
     -->
    <function name="func_date" class="Date">
        <property name="dateFormat">yyyy-MM-dd</property>
        <property name="sBeginDate">2015-01-01</property>
        <property name="sEndDate">2015-01-31 </property> <!--if not set sEndDate,then in fact ,the sEndDate = sBeginDate+ (node size)*sPartionDay-1 -->
        <property name="sPartionDay">10</property>
        <property name="defaultNode">0</property><!--the default is -1-->
    </function>

    <!-- pattern partition -->
    <!--mapFile must contains all value of 0~patternValue-1,key and value must be Continuous increase-->
    <function name="func_pattern" class="PatternRange">
        <property name="mapFile">partition-pattern.txt</property>
        <property name="patternValue">1024</property>
        <property name="defaultNode">0</property><!--contains string which is not number,router to default node-->
    </function>


</dble:rule>



4.启动 dble
cd /opt/dble/bin
./dble start &

查看dble 状态：
./dble status
dble-server is running (1656).

如果是running则是正常，若不是runing状态，则需要看log日志排查原因，一般都是配置文件配置错误导致。


5.查询

[root@testdb1 ~]# mysql -uuser -puser -h192.168.119.130 -P8066 -A


分别测试下它们是否能读、写数据
[root@testdb1 ~]# mysql -uuser -puser -h192.168.119.130 -P8066 -e "select @@server_id"
mysql: [Warning] Using a password on the command line interface can be insecure.
+-------------+
| @@server_id |
+-------------+
| 63 |
+-------------+


读操作已经路由给读组，再看看写操作。这里以事务持久化进行测试。
[root@testdb1 ~]# mysql -uuser -puser -h192.168.119.130 -P8066 -e ‘
start transaction;select @@server_id;commit;select @@server_id;‘

mysql: [Warning] Using a password on the command line interface can be insecure.
+-------------+
| @@server_id |
+-------------+
| 62 |
+-------------+
+-------------+
| @@server_id |
+-------------+
| 63 |
+-------------+