生成镜像
Docker build –f dockerfile –t mycat .首先启动 mycat
docker run --name mycat --network mysql -p 8066:8066 -p 9066:9066 -d mycat然后复制配置文件到本地
docker cp mycat:/usr/local/mycat/conf/ /usr/local/mycat/conf/ docker stop mycat docker rm mycat修改mycay server.xml 配置
<?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="nonePasswordLogin">0</property> <!-- 0为需要密码登陆、1为不需要密码登陆 ,默认为0，设置为1则需要指定默认账户--> <property name="useHandshakeV10">1</property> <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="sqlExecuteTimeout">300</property> <!-- SQL 执行超时 单位:秒--> <property name="sequnceHandlerType">2</property> <!--<property name="sequnceHandlerPattern">(?:(\s*next\s+value\s+for\s*MYCATSEQ_(\w+))(,|\)|\s)*)+</property>--> <!--必须带有MYCATSEQ_或者 mycatseq_进入序列匹配流程 注意MYCATSEQ_有空格的情况--> <property name="sequnceHandlerPattern">(?:(\s*next\s+value\s+for\s*MYCATSEQ_(\w+))(,|\)|\s)*)+</property> <property name="subqueryRelationshipCheck">false</property> <!-- 子查询中存在关联查询的情况下,检查关联字段中是否有分片字段 .默认 false --> <!-- <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 | type 2 NettyBufferPool --> <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="dataNodeIdleCheckPeriod">300000</property> 5 * 60 * 1000L; //连接空闲检查 <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">0</property> <!-- 单位为m --> <property name="memoryPageSize">64k</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">false</property> <!-- XA Recovery Log日志路径 --> <!--<property name="XARecoveryLogBaseDir">./</property>--> <!-- XA Recovery Log日志名称 --> <!--<property name="XARecoveryLogBaseName">tmlog</property>--> <!--如果为 true的话 严格遵守隔离级别,不会在仅仅只有select语句的时候在事务中切换连接--> <property name="strictTxIsolation">false</property> <property name="useZKSwitch">true</property> </system> <!-- 全局SQL防火墙设置 --> <!--白名单可以使用通配符%或着*--> <!--例如<host host="127.0.0.*" user="root"/>--> <!--例如<host host="127.0.*" user="root"/>--> <!--例如<host host="127.*" user="root"/>--> <!--例如<host host="1*7.*" user="root"/>--> <!--这些配置情况下对于127.0.0.1都能以root账户登录--> <!-- <firewall> <whitehost> <host host="1*7.0.0.*" user="root"/> </whitehost> <blacklist check="false"> </blacklist> </firewall> --> <!-- 添加用户，及用户能访问的逻辑库 --> <user name="tx0001"> <property name="password">wycqq12345</property> <property name="schemas">block_master_eth</property> <property name="readOnly">true</property> </user> </mycat:server>修改schema.xml 实现读写分离，及定义逻辑库 ，分片，分表
<?xml version="1.0"?> <!DOCTYPE mycat:schema SYSTEM "schema.dtd"> <mycat:schema xmlns:mycat="http://io.mycat/"> <schema name="block_master_eth" checkSQLschema="true" sqlMaxLimit="100"> <table name="blocks" ruleRequired="false" primaryKey="block_number" autoIncrement="false" dataNode="eth" /> <table name="transactions" ruleRequired="true" subTables="transactions$1-100" autoIncrement="false" dataNode="eth" rule="transactions_rule" /> </schema> <dataNode name="eth" dataHost="host" database="block_master_eth" /> <dataHost name="host" maxCon="2000" minCon="200" balance="3" dbType="mysql" dbDriver="jdbc" switchType="1"> <heartbeat>select user()</heartbeat> <writeHost host="btcM1" url="jdbc:mysql://masterIP:3306/" user="root" password="wycqq123456"> <readHost host="btcS1" url="jdbc:mysql://slaveIP:3308/" user="root" password="wycqq123456" /> </writeHost> </dataHost> </mycat:schema>修改rule.xml 定义分表，分片规则
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mycat:rule SYSTEM "rule.dtd"> <mycat:rule xmlns:mycat="http://io.mycat/"> <tableRule name="transactions_rule"> <rule> <columns>block_number</columns> <algorithm>t_fun_block</algorithm> </rule> </tableRule> <function name="t_fun_block" class="io.mycat.route.function.PartitionByPattern"> <property name="patternValue">2000</property> <property name="defaultNode">0</property> <property name="mapFile">partition-pattern.txt</property> </function> </mycat:rule>partition-pattern.txt 当前是hash+范围分片 对transactions 进行分片到20 个字表，当hash取模为1-100 在0表以此类推。
运行镜像
docker run --name mycat --network mysql -p 8066:8066 -p 9066:9066 -v /usr/local/mycat/conf/:/usr/local/mycat/conf/ -d mycat