中间件mycat入门(一):部署与介绍
初期测试过程中,原本采用kingshard中作为中间件的项目,但在测试的过程中，发现了不支持不同分表的join，只能选择放弃，改成mycat做测试
下载地址为
[root@gzsd-ks01-101110214 download]# wget http://dl.mycat.io/1.6.5/Mycat-server-1.6.5-release-20171117203123-linux.tar.gz
[root@gzsd-ks01-101110214 download]# tar xvf Mycat-server-1.6.5-release-20171117203123-linux.tar.gz
- 需要有java的支持，这里直接使用yum进行安装
[root@gzsd-ks01-101110214 mycat]# yum -y install java
- 将解压的目录放到标准目录中
[root@gzsd-ks01-101110214 download]# mv mycat /usr/local/- 查看对应的目录树
[root@gzsd-ks01-101110214 download]# tree /usr/local/mycat/
/usr/local/mycat/
├── bin
│ ├── dataMigrate.sh
│ ├── init_zk_data.sh
│ ├── mycat
│ ├── rehash.sh
│ ├── startup_nowrap.sh
│ ├── wrapper-linux-ppc-64
│ ├── wrapper-linux-x86-32
│ └── wrapper-linux-x86-64
├── catlet
├── conf
│ ├── autopartition-long.txt
│ ├── auto-sharding-long.txt
│ ├── auto-sharding-rang-mod.txt
│ ├── cacheservice.properties
│ ├── dbseq.sql
│ ├── ehcache.xml
│ ├── index_to_charset.properties
│ ├── log4j2.xml
│ ├── migrateTables.properties
│ ├── myid.properties
│ ├── partition-hash-int.txt
│ ├── partition-range-mod.txt
│ ├── rule.xml
│ ├── schema.xml
│ ├── sequence_conf.properties
│ ├── sequence_db_conf.properties
│ ├── sequence_distributed_conf.properties
│ ├── sequence_time_conf.properties
│ ├── server.xml
│ ├── sharding-by-enum.txt
│ ├── wrapper.conf
│ ├── zkconf
│ │ ├── autopartition-long.txt
│ │ ├── auto-sharding-long.txt
│ │ ├── auto-sharding-rang-mod.txt
│ │ ├── cacheservice.properties
│ │ ├── ehcache.xml
│ │ ├── index_to_charset.properties
│ │ ├── partition-hash-int.txt
│ │ ├── partition-range-mod.txt
│ │ ├── rule.xml
│ │ ├── schema.xml
│ │ ├── sequence_conf.properties
│ │ ├── sequence_db_conf.properties
│ │ ├── sequence_distributed_conf-mycat_fz_01.properties
│ │ ├── sequence_distributed_conf.properties
│ │ ├── sequence_time_conf-mycat_fz_01.properties
│ │ ├── sequence_time_conf.properties
│ │ ├── server-mycat_fz_01.xml
│ │ ├── server.xml
│ │ └── sharding-by-enum.txt
│ └── zkdownload
│ └── auto-sharding-long.txt
├── lib
│ ├── asm-4.0.jar
│ ├── commons-collections-3.2.1.jar
│ ├── commons-lang-2.6.jar
│ ├── curator-client-2.11.0.jar
│ ├── curator-framework-2.11.0.jar
│ ├── curator-recipes-2.11.0.jar
│ ├── disruptor-3.3.4.jar
│ ├── dom4j-1.6.1.jar
│ ├── druid-1.0.26.jar
│ ├── ehcache-core-2.6.11.jar
│ ├── fastjson-1.2.12.jar
│ ├── guava-19.0.jar
│ ├── hamcrest-core-1.3.jar
│ ├── hamcrest-library-1.3.jar
│ ├── jline-0.9.94.jar
│ ├── joda-time-2.9.3.jar
│ ├── jsr305-2.0.3.jar
│ ├── kryo-2.10.jar
│ ├── leveldb-0.7.jar
│ ├── leveldb-api-0.7.jar
│ ├── libwrapper-linux-ppc-64.so
│ ├── libwrapper-linux-x86-32.so
│ ├── libwrapper-linux-x86-64.so
│ ├── log4j-1.2.17.jar
│ ├── log4j-1.2-api-2.5.jar
│ ├── log4j-api-2.5.jar
│ ├── log4j-core-2.5.jar
│ ├── log4j-slf4j-impl-2.5.jar
│ ├── mapdb-1.0.7.jar
│ ├── minlog-1.2.jar
│ ├── mongo-java-driver-2.11.4.jar
│ ├── Mycat-server-1.6.5-release.jar
│ ├── mysql-binlog-connector-java-0.6.0.jar
│ ├── mysql-connector-java-5.1.35.jar
│ ├── netty-3.7.0.Final.jar
│ ├── netty-buffer-4.1.9.Final.jar
│ ├── netty-common-4.1.9.Final.jar
│ ├── objenesis-1.2.jar
│ ├── reflectasm-1.03.jar
│ ├── sequoiadb-driver-1.12.jar
│ ├── slf4j-api-1.6.1.jar
│ ├── univocity-parsers-2.2.1.jar
│ ├── velocity-1.7.jar
│ ├── wrapper.jar
│ └── zookeeper-3.4.6.jar
├── logs
│ └── wrapper.log
└── version.txt
7 directories, 96 files
- 设置环境变量
[root@gzsd-ks01-101110214 download]# vim /etc/profile
MYCAT_HOME=/usr/local/mycat
[root@gzsd-ks01-101110214 download]# source /etc/profile
- 修改server.xml文件
[root@gzsd-ks01-101110214 download]# vim $MYCAT_HOME/conf/server.xml
<mycat:server xmlns:mycat="http://io.mycat/">
<system>
<property name="nonePasswordLogin">0property>
<property name="useHandshakeV10">1property>
<property name="useSqlStat">1property>
<property name="useGlobleTableCheck">0property>
<property name="sequnceHandlerType">2property>
<property name="subqueryRelationshipCheck">falseproperty>
<property name="processorBufferPoolType">0property>
<property name="maxStringLiteralLength">65535property>
<property name="sequnceHandlerType">0property>
<property name="backSocketNoDelay">1property>
<property name="frontSocketNoDelay">1property>
<property name="handleDistributedTransactions">0property>
<property name="useOffHeapForMerge">1property>
<property name="memoryPageSize">64kproperty>
<property name="spillsFileBufferSize">1kproperty>
<property name="useStreamOutput">0property>
<property name="systemReserveMemorySize">384mproperty>
<property name="useZKSwitch">falseproperty>
system>
<user name="root" defaultAccount="true">
<property name="password">123456property>
<property name="schemas">wms_output_0000property>
user>
<user name="user">
<property name="password">userproperty>
<property name="schemas">wms_output_0000property>
<property name="readOnly">trueproperty>
user>
mycat:server>
- 修改schema.xml文件
[root@gzsd-ks01-101110214 download]# vim $MYCAT_HOME/conf/schema.xml
<mycat:schema xmlns:mycat="http://io.mycat/">
<schema name="wms_output_0000" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn1">
<table name="wmp_so_package" primaryKey="id" autoIncrement="true" subTables="wmp_so_package$1-128" type="global" dataNode="dn1" rule="mod-long" />
<table name="wmp_sale_order" primaryKey="id" autoIncrement="true" subTables="wmp_sale_order$1-128" type="global" dataNode="dn1" rule="mod-long" />
schema>
<dataNode name="dn1" dataHost="cluster1" database="wms_output_0000" />
<dataHost name="cluster1" maxCon="1000" minCon="10" balance="0" writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
<heartbeat>select user()heartbeat>
<writeHost host="hostM1" url="10.11.10.215:3306" user="gz_mycat_account" password="alo!7TTg@123">
<readHost host="hostS1" url="10.11.10.216:3306" user="gz_mycat_account" password="alo!7TTg@123" />
writeHost>
dataHost>
mycat:schema>
- 修改rule.xml文件
[root@gzsd-ks01-101110214 download]# vim $MYCAT_HOME/conf/rule.xml
<mycat:rule xmlns:mycat="http://io.mycat/">
<tableRule name="mod-long">
<rule>
<columns>idcolumns>
<algorithm>mod-longalgorithm>
rule>
tableRule>
<function name="mod-long" class="io.mycat.route.function.PartitionByMod">
<property name="count">128property>
function>
mycat:rule>
- 启动
[root@gzsd-ks01-101110214 download]# cd $MYCAT_HOME
[root@gzsd-ks01-101110214 mycat]# ./bin/mycat start
Starting Mycat-server...
- 查看端口
[root@gzsd-ks01-101110214 mycat]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 878/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1349/master
tcp 0 0 127.0.0.1:32000 0.0.0.0:* LISTEN 12104/java
tcp6 0 0 :::9066 :::* LISTEN 12104/java
tcp6 0 0 :::16305 :::* LISTEN 12104/java
tcp6 0 0 :::22 :::* LISTEN 878/sshd
tcp6 0 0 ::1:25 :::* LISTEN 1349/master
tcp6 0 0 :::42620 :::* LISTEN 12104/java
tcp6 0 0 :::1984 :::* LISTEN 12104/java
tcp6 0 0 :::8066 :::* LISTEN 12104/java 配置完成后，即可使用客户端工具连接进行操作。
启动之前，需要明确的一个点就是，指定的库和指定的分表个数，一定要先在DB上创建了先。schema.xml和rule分别对应，在这里，有两个分表，分表均为128张表，即
| 分表 | 库 | 数目 | 说明 |
|---|---|---|---|
| wmp_so_package | wms_output_0000 | 128 | schema.xml配置 |
| wmp_sale_order | wms_output_0000 | 128 | schema.xml配置 |
启动的时候，可能会碰到如下问题
FATAL | wrapper | 2017/12/05 17:21:16 | There were 5 failed launches in a row, each lasting less than 300 seconds. Giving up.
FATAL | wrapper | 2017/12/05 17:21:16 | There may be a configuration problem: please check the logs.
STATUS | wrapper | 2017/12/05 17:21:16 | <-- Wrapper Stopped出现这种问题的解决办法是在hosts中加入对应的信息
如果还有其他问题，则可以打开debug进行查证
