本篇内容介绍了“MyCat怎么分库分表”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
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项目环境：
192.168.8.30 mycat
192.168.8.31 node1
192.168.8.32 node2
192.168.8.33 node3
三个节点MySQL均为单实例
一、创建测试库
node1
create database testdb01;
create database testdb02;
create database testdb03;
node2
create database testdb13;
create database testdb14;
create database testdb15;
node3
create database testdb25;
create database testdb26;
create database testdb27;
二、配置schema.xml
select user()
select user()
select user()
三、配置rule.xml
id
autopartition-long-user03
autopartition-long-user03.txt
0
四、配置autopartition-long-user03.txt
1-10=0
11-20=1
21-30=2
31-40=3
41-50=4
51-60=5
61-70=6
71-80=7
81-10000=8
五、配置server.xml
mysql
mycatdb
六、启动mycat
/usr/local/mycat/bin/mycat start
查看mycat日志
STATUS | wrapper | 2018/11/22 15:27:14 | --> Wrapper Started as Daemon
STATUS | wrapper | 2018/11/22 15:27:14 | Launching a JVM...
INFO | jvm 1 | 2018/11/22 15:27:14 | OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=64M; support was removed in 8.0
INFO | jvm 1 | 2018/11/22 15:27:16 | Wrapper (Version 3.2.3) /tupian/20230522/home.html
INFO | jvm 1 | 2018/11/22 15:27:16 | Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.
INFO | jvm 1 | 2018/11/22 15:27:16 |
INFO | jvm 1 | 2018/11/22 15:27:20 | MyCAT Server startup successfully. see logs in logs/mycat.log
七、登录MySQL并查看逻辑表
mysql> use mycatdb;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+-------------------+
| Tables in mycatdb |
+-------------------+
| order01 |
| orderdetail01 |
| user01 |
| user02 |
| user03 |
+-------------------+
5 rows in set (0.00 sec)
mysql>
mysql>
mysql> drop table if exists user03;
Query OK, 0 rows affected, 1 warning (0.23 sec)
mysql> create table user03 (
-> id int not null auto_increment,
-> name varchar(64),
-> primary key (id)
-> );
Query OK, 0 rows affected (0.43 sec)
八、插入测试数据
共插入50条数据
insert into user03(id,name) values(1,'steven');
insert into user03(id,name) values(2,'steven');
insert into user03(id,name) values(3,'steven');
insert into user03(id,name) values(4,'steven');
insert into user03(id,name) values(5,'steven');
insert into user03(id,name) values(11,'steven');
insert into user03(id,name) values(12,'steven');
insert into user03(id,name) values(13,'steven');
insert into user03(id,name) values(14,'steven');
insert into user03(id,name) values(15,'steven');
insert into user03(id,name) values(21,'steven');
insert into user03(id,name) values(22,'steven');
insert into user03(id,name) values(23,'steven');
insert into user03(id,name) values(24,'steven');
insert into user03(id,name) values(25,'steven');
insert into user03(id,name) values(31,'steven');
insert into user03(id,name) values(32,'steven');
insert into user03(id,name) values(33,'steven');
insert into user03(id,name) values(34,'steven');
insert into user03(id,name) values(35,'steven');
insert into user03(id,name) values(41,'steven');
insert into user03(id,name) values(42,'steven');
insert into user03(id,name) values(43,'steven');
insert into user03(id,name) values(44,'steven');
insert into user03(id,name) values(45,'steven');
insert into user03(id,name) values(51,'steven');
insert into user03(id,name) values(52,'steven');
insert into user03(id,name) values(53,'steven');
insert into user03(id,name) values(54,'steven');
insert into user03(id,name) values(55,'steven');
insert into user03(id,name) values(61,'steven');
insert into user03(id,name) values(62,'steven');
insert into user03(id,name) values(63,'steven');
insert into user03(id,name) values(64,'steven');
insert into user03(id,name) values(65,'steven');
insert into user03(id,name) values(71,'steven');
insert into user03(id,name) values(72,'steven');
insert into user03(id,name) values(73,'steven');
insert into user03(id,name) values(74,'steven');
insert into user03(id,name) values(75,'steven');
insert into user03(id,name) values(81,'steven');
insert into user03(id,name) values(82,'steven');
insert into user03(id,name) values(83,'steven');
insert into user03(id,name) values(84,'steven');
insert into user03(id,name) values(85,'steven');
insert into user03(id,name) values(91,'steven');
insert into user03(id,name) values(92,'steven');
insert into user03(id,name) values(93,'steven');
insert into user03(id,name) values(94,'steven');
insert into user03(id,name) values(95,'steven');
九、数据验证
三个node只在testdb01-03,testdb13-15，testdb25-27，所以除了这9个物理库之外，其他库查不到分片。
下面在三个node分别验证出分片信息：
node1
mysql> select count(*) from testdb01.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from testdb02.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from testdb03.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
node2
mysql> select count(*) from testdb13.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from testdb14.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from testdb15.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
node3
mysql> select count(*) from testdb25.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from testdb26.user03;
+----------+
| count(*) |
+----------+
| 5 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from testdb27.user03;
+----------+
| count(*) |
+----------+
| 10 |
+----------+
1 row in set (0.00 sec)
“MyCat怎么分库分表”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注创新互联-成都网站建设公司网站，小编将为大家输出更多高质量的实用文章！
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