Docker部署 MySQL+Mycat

一、到docker镜像仓库获取镜像信息

国内打不开，就直接用下面的docker-compose，看看能否下载，能下载也OK。
二、编写docker-compose文件

vim docker-compose.yml

确定3306、8066、9066端口是否被占用，被占用，映射别的端口，不用安装mysql，用别的mysql可以删除，之后通过mycat配置mysql。

version: '3.8'services:mysql:image: mysql:5.7.41container_name: mysqlenvironment:MYSQL_ROOT_PASSWORD: jimi@123MYSQL_DATABASE: hisports:- "3306:3306"volumes:#挂载盘路径自己修改- /data/mysql/data:/var/lib/mysql- /data/mysql/conf/mysql.cnf:/etc/mysql/conf.d/my.cnfnetworks:- mycat-netmycat:image: manondidi/mycat:latestcontainer_name: mycatports:- "8066:8066"   # 应用连接端口- "9066:9066"   # 管理端口environment:- "TZ=UTC --privileged=true" # 时区信息，可以自己修改volumes:#挂载盘路径自己修改- /data/mycat/conf:/usr/local/mycat/conf- /data/mycat/logs:/usr/local/mycat/logsdepends_on:- mysqlnetworks:- mycat-netnetworks:mycat-net:driver: bridge

第一次启动，不要挂载 - /data/mycat/conf:/usr/local/mycat/conf,它会覆盖配置文件导致启动失败；

docker-compose -f docker-compose.yml up -d

第三步、登录容器mycat，把配置信息复制到 /usr/local/mycat/logs/文件夹下面

docker exec -it mycat /bin/bash
cp -r /usr/local/mycat/conf /usr/local/mycat/logs/

退出容器，移动文件到 /data/mycat

cd /data/mycat/logs
mv /data/mycat/logs/conf ./

第四步、登录mysql，修改root可以远程连接，否则连接错误

docker exec -it mysql /bin/bash
#登录mysql
mysql -u root -p
-- 允许 root 用户从任意主机远程连接（不推荐用于生产）
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '你的密码' WITH GRANT OPTION;
#刷新
FLUSH PRIVILEGES;

重启docker-compose

docker-compose -f docker-compose.yml stop
docker-compose -f docker-compose.yml up -d

启动成功，就表示正常部署了mysql+mycat。
第五步、调整mycat配置文件（重要）

cd /data/mycat/conf

主要是5个文件，建议下载到本地修改
server.xml、schema.xml、rule.xml、partition-range-mod.txt、auto-sharding-rang-mod.txt，后面两个文件错误，需要修改，并且它的分片数量必须要小于等于schema.xml中的dataNode数量

server.xml
主要设置mycat的用户名密码，一个root用户一个普通用户

<?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="ignoreUnknownCommand">0</property><!-- 0遇上没有实现的报文(Unknown command:),就会报错、1为忽略该报文，返回ok报文。在某些mysql客户端存在客户端已经登录的时候还会继续发送登录报文,mycat会报错,该设置可以绕过这个错误--><property name="useHandshakeV10">1</property><property name="removeGraveAccent">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="sequenceHandlerType">1</property><!--<property name="sequnceHandlerPattern">(?:(\s*next\s+value\s+for\s*MYCATSEQ_(\w+))(,|\)|\s)*)+</property>INSERT INTO `travelrecord` (`id`,user_id) VALUES ('next value for MYCATSEQ_GLOBAL',"xxx");--><!--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="sequenceHanlderClass">io.mycat.route.sequence.handler.HttpIncrSequenceHandler</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 | 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="sequenceHandlerType">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><!--如果为0的话,涉及多个DataNode的catlet任务不会跨线程执行--><property name="parallExecute">0</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>--><user name="root" defaultAccount="true"><property name="password">xxx@123</property><property name="schemas">his</property><property name="defaultSchema">his</property><!--No MyCAT Database selected 错误前会尝试使用该schema作为schema，不设置则为null,报错 --><!-- 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">xxx@123</property><property name="schemas">his</property><property name="readOnly">false</property><property name="defaultSchema">his</property></user></mycat:server>

schema.xml
配置分片表信息

<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/"><schema name="his" sqlMaxLimit="10000"><!--  配置表  --><table name="tab_part_info" dataNode="dn1_info"/><!--  分表1  --><table name="test_his" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><!--  分表1  --><table name="table_his_01" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_02" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_03" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_04" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_05" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_06" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_07" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_08" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_09" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_10" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_11" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><table name="table_his_12" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="imei-murmur"/><!--  分表1  --><table name="device_his_202501" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202502" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202503" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202504" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202505" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202506" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202507" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202508" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202509" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202510" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202511" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/><table name="device_his_202512" dataNode="dn1,dn2,dn3,dn4,dn5,dn6,dn7,dn8,dn9,dn10" rule="user-id-murmur"/></schema><!-- 定义数据节点 --><dataNode name="dn1_info" dataHost="host1" database="his_10"/><dataNode name="dn1" dataHost="host1" database="his_10"/><dataNode name="dn2" dataHost="host1" database="his_11"/><dataNode name="dn3" dataHost="host1" database="his_12"/><dataNode name="dn4" dataHost="host1" database="his_13"/><dataNode name="dn5" dataHost="host1" database="his_14"/><dataNode name="dn6" dataHost="host1" database="his_15"/><dataNode name="dn7" dataHost="host1" database="his_16"/><dataNode name="dn8" dataHost="host1" database="his_17"/><dataNode name="dn9" dataHost="host1" database="his_18"/><dataNode name="dn10" dataHost="host1" database="his_19"/><!--  节点1 --><dataHost name="host1" maxCon="1000" minCon="100" balance="0" writeType="0" dbType="mysql" dbDriver="native"><heartbeat>select user()</heartbeat><writeHost host="host1M" url="172.26.10.126:3306" user="root" password="xxx@123"> </writeHost></dataHost>
</mycat:schema>

rule.xml
存在自定义规则，需要新增规则，实际上一个库会存不同的表用不同的字段分库，所以是可以添加多个分片规则

<?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:rule SYSTEM "rule.dtd">
<mycat:rule xmlns:mycat="http://io.mycat/"><tableRule name="rule1"><rule><columns>id</columns><algorithm>func1</algorithm></rule></tableRule><tableRule name="sharding-by-date"><rule><columns>createTime</columns><algorithm>partbyday</algorithm></rule></tableRule><tableRule name="rule2"><rule><columns>user_id</columns><algorithm>func1</algorithm></rule></tableRule><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><tableRule name="crc32slot"><rule><columns>id</columns><algorithm>crc32slot</algorithm></rule></tableRule><tableRule name="sharding-by-month"><rule><columns>create_time</columns><algorithm>partbymonth</algorithm></rule></tableRule><tableRule name="latest-month-calldate"><rule><columns>calldate</columns><algorithm>latestMonth</algorithm></rule></tableRule><tableRule name="auto-sharding-rang-mod"><rule><columns>id</columns><algorithm>rang-mod</algorithm></rule></tableRule><tableRule name="jch"><rule><columns>id</columns><algorithm>jump-consistent-hash</algorithm></rule></tableRule><tableRule name="imei-murmur"><rule><columns>imei</columns><algorithm>murmur</algorithm></rule></tableRule><tableRule name="user-id-murmur"><rule><columns>id</columns><algorithm>rang-mod</algorithm></rule></tableRule><function name="murmur"class="io.mycat.route.function.PartitionByMurmurHash"><property name="seed">0</property><!-- 默认是0 --><property name="count">2</property><!-- 要分片的数据库节点数量，必须指定，否则没法分片 --><property name="virtualBucketTimes">160</property><!-- 一个实际的数据库节点被映射为这么多虚拟节点，默认是160倍，也就是虚拟节点数是物理节点数的160倍 --><!-- <property name="weightMapFile">weightMapFile</property> 节点的权重，没有指定权重的节点默认是1。以properties文件的格式填写，以从0开始到count-1的整数值也就是节点索引为key，以节点权重值为值。所有权重值必须是正整数，否则以1代替 --><!-- <property name="bucketMapPath">/etc/mycat/bucketMapPath</property>用于测试时观察各物理节点与虚拟节点的分布情况，如果指定了这个属性，会把虚拟节点的murmur hash值与物理节点的映射按行输出到这个文件，没有默认值，如果不指定，就不会输出任何东西 --></function><function name="crc32slot"class="io.mycat.route.function.PartitionByCRC32PreSlot"><property name="count">2</property><!-- 要分片的数据库节点数量，必须指定，否则没法分片 --></function><function name="hash-int"class="io.mycat.route.function.PartitionByFileMap"><property name="mapFile">partition-hash-int.txt</property></function><function name="rang-long"class="io.mycat.route.function.AutoPartitionByLong"><property name="mapFile">autopartition-long.txt</property></function><function name="mod-long" class="io.mycat.route.function.PartitionByMod"><!-- how many data nodes --><property name="count">3</property></function><function name="func1" class="io.mycat.route.function.PartitionByLong"><property name="partitionCount">8</property><property name="partitionLength">128</property></function><function name="latestMonth"class="io.mycat.route.function.LatestMonthPartion"><property name="splitOneDay">24</property></function><function name="partbymonth"class="io.mycat.route.function.PartitionByMonth"><property name="dateFormat">yyyy-MM-dd</property><property name="sBeginDate">2025-01-01</property></function><function name="partbyday"class="io.mycat.route.function.PartitionByDate"><property name="dateFormat">yyyy-MM-dd</property><property name="sNaturalDay">0</property><property name="sBeginDate">2024-01-01</property><property name="sEndDate">2034-12-31</property><property name="sPartionDay">10</property></function><function name="rang-mod" class="io.mycat.route.function.PartitionByRangeMod"><property name="mapFile">partition-range-mod.txt</property></function><function name="jump-consistent-hash" class="io.mycat.route.function.PartitionByJumpConsistentHash"><property name="totalBuckets">3</property></function>
</mycat:rule>

partition-range-mod.txt、auto-sharding-rang-mod.txt，这两个文件是因为node定义错误，并且定义了20个，这个值必须要小于schemal.xml database个数，定义 his_10 - his_19 10个库，这个节点也需要小于等于10个

0M-600M=3
600M-1200M=3
1200M-1800M=4

第六步、再次重启docker-compose

docker-compose -f docker-compose.yml stop
docker-compose -f docker-compose.yml up -d

第七步、在MySQL建立 his_10 - his_19库，导入schemal.xml定义的表