CentOS7.5下安裝Mycat連接MySQL8.0

Posted on 2018-11-08 11:07 許愛琪閱讀(645) 評論(2) 編輯收藏

MyCat詳細介紹，請參考https://www.biaodianfu.com/mycat.html

9066管理端口，請參考https://www.cnblogs.com/parryyang/p/5606071.html

1.創建mycat用戶

 
                   useradd mycat 
                  
                   passwd mycat

2.下載安裝包、解壓並賦權

 
                   wget http: 
                   //dl.mycat.io/1.6.6.1/Mycat-server-1.6.6.1-release-20181031195535-linux.tar.gz 
                  
                   tar -xzvf Mycat-server-1.6.6.1-release-20181031195535-linux.tar.gz -C /usr/local 
                  
                   chown -R mycat:mycat /usr/local/mycat

3.配置環境變量

 
                   vi /etc/profile 
                  
                   增加 
                  
                   ## jdk env 
                  
                   JAVA_HOME=/usr/java/jdk1.8.0_192 
                  
                   CLASSPATH=$JAVA_HOME/lib/ 
                  
                   PATH=$PATH:$JAVA_HOME/bin 
                  
                   export PATH JAVA_HOME CLASSPATH 
                  
                   ## mycat env 
                  
                   export MYCAT_HOME=/usr/local/mycat 
                  
                   export PATH=$PATH:$MYCAT_HOME/bin 
                  
                   source /etc/profile

4.配置server.xml
vi /usr/local/mycat/conf/server.xml

5.配置schema.xml
vi /usr/local/mycat/conf/schema.xml

6.啟動Mycat

 
                   mycat start

7.查看mycat啟動日志
[root@mycat-server2 data]# mycat console
Running Mycat-server...
Mycat-server is already running.

8.連接MyCat
連接管理端口：

 
                   [root@mycat-server2 data]# mysql -h192.168.0.252 -P9066 -utest -ptest 
                  
                   mysql: [Warning] Using a password  
                   on  
                   the command line  
                   interface  
                   can be insecure. 
                  
                   Welcome to the MySQL monitor. Commands end with ; or \g. 
                  
                   Your MySQL connection id  
                   is  
                   21 
                  
                   Server version: 5.6.29-mycat-1.6.6.1-release-20181031195535 MyCat Server (monitor) 
                  
                   Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. 
                  
                   Oracle  
                   is  
                   a registered trademark of Oracle Corporation and/or its 
                  
                   affiliates. Other names may be trademarks of their respective 
                  
                   owners. 
                  
                   Type  
                   'help;'  
                   or  
                   '\h'  
                   for  
                   help. Type  
                   '\c'  
                   to clear the current input statement. 
                  
                   # 查看所有的可用命令： 
                  
                   mysql> show @@help; 
                  
                   +--------------------------------------------------------------+--------------------------------------------+ 
                  
                   | STATEMENT | DESCRIPTION | 
                  
                   +--------------------------------------------------------------+--------------------------------------------+ 
                  
                   | show @@time.current | Report current timestamp | 
                  
                   | show @@time.startup | Report startup timestamp | 
                  
                   | show @@version | Report Mycat Server version | 
                  
                   | show @@server | Report server status | 
                  
                   | show @@threadpool | Report threadPool status | 
                  
                   | show @@database | Report databases | 
                  
                   | show @@datanode | Report dataNodes | 
                  
                   | show @@datanode  
                   where  
                   schema = ? | Report dataNodes | 
                  
                   | show @@datasource | Report dataSources | 
                  
                   | show @@datasource  
                   where  
                   dataNode = ? | Report dataSources | 
                  
                   | show @@datasource.synstatus | Report datasource data synchronous | 
                  
                   | show @@datasource.syndetail  
                   where  
                   name=? | Report datasource data synchronous detail | 
                  
                   | show @@datasource.cluster | Report datasource galary cluster variables | 
                  
                   | show @@processor | Report processor status | 
                  
                   | show @@command | Report commands status | 
                  
                   | show @@connection | Report connection status | 
                  
                   | show @@cache | Report system cache usage | 
                  
                   | show @@backend | Report backend connection status |  ##顯示后端物理庫連接信息，包括當前連接數，端口等信息 
                  
                   | show @@session | Report front session details | 
                  
                   | show @@connection.sql | Report connection sql |      ## 顯示當前前端客戶端連接情況 
                  
                   | show @@sql.execute | Report execute status | 
                  
                   | show @@sql.detail  
                   where  
                   id = ? | Report execute detail status | 
                  
                   | show @@sql | Report SQL list | 
                  
                   | show @@sql.high | Report Hight Frequency SQL | 
                  
                   | show @@sql.slow | Report slow SQL | 
                  
                   | show @@sql.resultset | Report BIG RESULTSET SQL | 
                  
                   | show @@sql.sum | Report User RW Stat | 
                  
                   | show @@sql.sum.user | Report User RW Stat | 
                  
                   | show @@sql.sum.table | Report Table RW Stat | 
                  
                   | show @@parser | Report parser status | 
                  
                   | show @@router | Report router status | 
                  
                   | show @@heartbeat | Report heartbeat status | 
                  
                   | show @@heartbeat.detail  
                   where  
                   name=? | Report heartbeat current detail | 
                  
                   | show @@slow  
                   where  
                   schema = ? | Report schema slow sql | 
                  
                   | show @@slow  
                   where  
                   datanode = ? | Report datanode slow sql | 
                  
                   | show @@sysparam | Report system param | 
                  
                   | show @@syslog limit=? | Report system mycat.log | 
                  
                   | show @@white | show mycat white host | 
                  
                   | show @@white. 
                   set 
                   =?,? |  
                   set  
                   mycat white host,[ip,user] | 
                  
                   | show @@directmemory=1 or 2 | show mycat direct memory usage | 
                  
                   | show @@check_global -SCHEMA= ? -TABLE=? -retry=? -interval=? | check mycat global table consistency | 
                  
                   |  
                   switch  
                   @@datasource name:index | Switch dataSource | 
                  
                   | kill @@connection id1,id2,... | Kill the specified connections | 
                  
                   | stop @@heartbeat name:time | Pause dataNode heartbeat | 
                  
                   | reload @@config | Reload basic config  
                   from  
                   file | 
                  
                   | reload @@config_all | Reload all config  
                   from  
                   file | 
                  
                   | reload @@route | Reload route config  
                   from  
                   file | 
                  
                   | reload @@user | Reload user config  
                   from  
                   file | 
                  
                   | reload @@sqlslow= | Set Slow SQL Time(ms) | 
                  
                   | reload @@user_stat | Reset show @@sql @@sql.sum @@sql.slow | 
                  
                   | rollback @@config | Rollback all config  
                   from  
                   memory | 
                  
                   | rollback @@route | Rollback route config  
                   from  
                   memory | 
                  
                   | rollback @@user | Rollback user config  
                   from  
                   memory | 
                  
                   | reload @@sqlstat=open | Open real-time sql stat analyzer | 
                  
                   | reload @@sqlstat=close | Close real-time sql stat analyzer | 
                  
                   | offline | Change MyCat status to OFF | 
                  
                   | online | Change MyCat status to ON | 
                  
                   | clear @@slow  
                   where  
                   schema = ? | Clear slow sql  
                   by  
                   schema | 
                  
                   | clear @@slow  
                   where  
                   datanode = ? | Clear slow sql  
                   by  
                   datanode | 
                  
                   +--------------------------------------------------------------+--------------------------------------------+ 
                  
                   59 rows  
                   in  
                   set  
                   (0.01 sec) 
                  
                   # 查看所有的邏輯數據庫： 
                  
                   mysql> show @@database; 
                  
                   +----------+ 
                  
                   | DATABASE | 
                  
                   +----------+ 
                  
                   | TESTDB | 
                  
                   +----------+ 
                  
                   1 row  
                   in  
                   set  
                   (0.00 sec) 
                  
                   # 查看所有的數據節點： 
                  
                   mysql> show @@datanode; 
                  
                   Empty  
                   set  
                   (0.00 sec) 
                  
                   mysql> show @@datasource; 
                  
                   +----------+----------+-------+---------------+------+------+--------+------+------+---------+-----------+------------+ 
                  
                   | DATANODE | NAME | TYPE | HOST | PORT | W/R | ACTIVE | IDLE | SIZE | EXECUTE | READ_LOAD | WRITE_LOAD | 
                  
                   +----------+----------+-------+---------------+------+------+--------+------+------+---------+-----------+------------+ 
                  
                   | dn1 | mysql_b1 | mysql | 192.168.0.242 | 3306 | W | 0 | 10 | 1000 | 6215 | 0 | 2 | 
                  
                   | dn1 | mysql_b2 | mysql | 192.168.0.240 | 3306 | R | 0 | 9 | 1000 | 6299 | 84 | 0 | 
                  
                   +----------+----------+-------+---------------+------+------+--------+------+------+---------+-----------+------------+ 
                  
                   2 rows  
                   in  
                   set  
                   (0.00 sec) 
                  
                   mysql> quit 
                  
                   Bye

連接數據操作端口：

 
                   [root@mycat-server2 data]# mysql -h192.168.0.252 -P8066 -utest -ptest 
                  
                   mysql: [Warning] Using a password  
                   on  
                   the command line  
                   interface  
                   can be insecure. 
                  
                   Welcome to the MySQL monitor. Commands end with ; or \g. 
                  
                   Your MySQL connection id  
                   is  
                   22 
                  
                   Server version: 5.6.29-mycat-1.6.6.1-release-20181031195535 MyCat Server (OpenCloudDB) 
                  
                   Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. 
                  
                   Oracle  
                   is  
                   a registered trademark of Oracle Corporation and/or its 
                  
                   affiliates. Other names may be trademarks of their respective 
                  
                   owners. 
                  
                   Type  
                   'help;'  
                   or  
                   '\h'  
                   for  
                   help. Type  
                   '\c'  
                   to clear the current input statement. 
                  
                   # 可以看見的都是邏輯數據庫： 
                  
                   mysql> show databases; 
                  
                   +----------+ 
                  
                   | DATABASE | 
                  
                   +----------+ 
                  
                   | TESTDB | 
                  
                   +----------+ 
                  
                   1 row  
                   in  
                   set  
                   (0.00 sec) 
                  
                   # 使用指定的邏輯數據庫： 
                  
                   mysql> use TESTDB; 
                  
                   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 
                  
                   # 查看所有的數據表： 
                  
                   mysql> show tables; 
                  
                   +----------------+ 
                  
                   | Tables_in_test | 
                  
                   +----------------+ 
                  
                   | member | 
                  
                   | t01 | 
                  
                   | t02 | 
                  
                   | t03 | 
                  
                   +----------------+ 
                  
                   4 rows  
                   in  
                   set  
                   (0.03 sec)

參數說明：

-h 后面是主機，即當前 mycat 安裝的主機地址，本地可用 127.0.0.1 遠程需要遠程 ip；
-u Mycat server.xml 中配置的邏輯庫用戶；
-p Mycat server.xml 中配置的邏輯庫密碼；
-P 后面是端口默認 9066，注意 P 是大寫；
-d Mycat server.xml 中配置的邏輯庫。

9.MyCat操作命令：

啟動MyCat: mycat start;
停止MyCat: mycat stop;
前台運行: mycat console;
重啟服務: mycat restart;
暫停: mycat pause;
查看啟動狀態: mycat status;

10.修改log4j的配置

為了讓信息啟動時更好定位，需要將conf/log4j2.xml的文件修改為debug級別。

附：其他問題
MySQL8.0的客戶端連不上Mycat？
解決方案：使用mysql5的客戶端可以正常訪問，待詳細分析

分類: mysql

好文要頂關注我收藏該文

許愛琪
關注 - 13
粉絲 - 4

+加關注

« 上一篇： Linux下安裝jdk8步驟詳述
» 下一篇： MySQL Router實現MySQL的讀寫分離

Feedback

ERROR 1054 (HY000): Unknown column '_mycat_op_time' in 'field list'

解決方案：這個是由參數 useGlobleTableCheck 控制的全局表一致性檢測，原理通過在全局表增加_MYCAT_OP_TIME字段來進行一致性檢測，類型為bigint，create語句通過mycat執行會自動加上這個字段，其他情況請自己手工添加。
所以創建表不要在 datanode 各節點去創建，而是通過 mycat 去創建。

支持(0) 反對(0)

#2樓 [樓主] 回復 引用

2018-11-08 14:53 by 許愛琪

配置為 systemd 服務

## sudo vim /usr/lib/systemd/system/mycat.service
## 注意: ExecStart/ExecStop 取值兩側不要用引號
[Unit]
Description=MyCAT Service
After=syslog.target network.target

[Service]
Type=forking
ExecStart=/usr/local/mycat/bin/mycat start
ExecStop=/usr/local/mycat/bin/mycat stop

[Install]
WantedBy=multi-user.target
設置開機自動啟動、並立即啟動：

sudo systemctl enable mycat # 設置為開機自動啟動
sudo systemctl start mycat # 立即啟動

# sudo systemctl stop mycat # 立即停止
# sudo systemctl disable mycat # 取消開機自動啟動

CentOS7.5 搭建MyCat1.6.6

1、環境及版本

操作系統： CentOS 7.5

MySQL：5.7.23

jdk：1.8.0_191

MyCat：1.6.6.1

 
                       cat /etc/centos-release 
                      
                       mysql -V 
                      
                       java -version

2、安裝包准備

下載網站：http://dl.mycat.io/1.6.6/

【2】上傳至linux服務器：

 
                       mkdir /home/rhr/soft/mycat 
                      
                       cd /home/rhr/soft/mycat 
                      
                       rz

3、開始安裝

【1】解壓

 
                       tar -zxvf Mycat-server-1.6-RELEASE-20161028204710-linux.tar.gz

【2】安裝tree（可選，使目錄結構更好看）

 
                       yum -y install tree

查看tree：

4、創建用戶並修改配置文件

【1】為了更好的進入mycat，設置MYCAT_HOME的變量

 
                       vim /etc/profile

　添加綠色部分：

export JAVA_HOME=/home/rhr/soft/jdk/jdk1.8.0_191
export MYCAT_HOME=/home/rhr/soft/mycat/mycat
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:/usr/local/mysql/bin:$MYCAT_HOME/bin:$PATH


使得變量生效

 
                       source /etc/profile

檢查

【2】配置mycat文件

（1）修改server.xml

 
                       cd home/rhr/soft/mycat/mycat/conf 
                      
                       cp server.xml server_bak.xml 
                      
                       vim  server.xml

修改前：

修改后：

（2）修改schema.xml

1) 修改schema 標簽

修改前：

    <schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">
        <!-- auto sharding by id (long) -->
        <table name="travelrecord" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" />

        <!-- global table is auto cloned to all defined data nodes ,so can join
                with any table whose sharding node is in the same data node -->
        <table name="company" primaryKey="ID" type="global" dataNode="dn1,dn2,dn3" />
        <table name="goods" primaryKey="ID" type="global" dataNode="dn1,dn2" />
        <!-- random sharding using mod sharind rule -->
        <table name="hotnews" primaryKey="ID" autoIncrement="true" dataNode="dn1,dn2,dn3" rule="mod-long" />
        <!-- <table name="dual" primaryKey="ID" dataNode="dnx,dnoracle2" type="global"
                needAddLimit="false"/> <table name="worker" primaryKey="ID" dataNode="jdbc_dn1,jdbc_dn2,jdbc_dn3" rule="mod-long" /> -->
        <table name="employee" primaryKey="ID" dataNode="dn1,dn2" rule="sharding-by-intfile" />
        <table name="customer" primaryKey="ID" dataNode="dn1,dn2" rule="sharding-by-intfile">
            <childTable name="orders" primaryKey="ID" joinKey="customer_id" parentKey="id">
                <childTable name="order_items" joinKey="order_id" parentKey="id" />
            </childTable>
            <childTable name="customer_addr" primaryKey="ID" joinKey="customer_id"  parentKey="id" />
        </table>
        <!-- <table name="oc_call" primaryKey="ID" dataNode="dn1$0-743" rule="latest-month-calldate" /> -->
    </schema>

修改后：

    <schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">
        <!-- auto sharding by id (long) -->
    <table name="travelrecord" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" />

    <!-- global table is auto cloned to all defined data nodes ,so can join
        with any table whose sharding node is in the same data node -->

    <table name="company" primaryKey="company_id" type="global" dataNode="dn1,dn2,dn3" />
    <table name="goods" primaryKey="goods_id" type="global" dataNode="dn1,dn2" />

    <!-- random sharding using mod sharind rule -->
    <table name="hotnews" primaryKey="hotnews_id" autoIncrement="true" dataNode="dn1,dn2,dn3" rule="mod-long" />

    <!-- <table name="dual" primaryKey="ID" dataNode="dnx,dnoracle2" type="global"
            needAddLimit="false"/> <table name="worker" primaryKey="ID" dataNode="jdbc_dn1,jdbc_dn2,jdbc_dn3" rule="mod-long" /> -->

    <table name="employee" primaryKey="employee_id" dataNode="dn1,dn2" rule="sharding-by-intfile" />

    <table name="customer" primaryKey="customer_id" dataNode="dn1,dn2" rule="sharding-by-murmur">
        <childTable name="orders" primaryKey="order_id" joinKey="customer_id" parentKey="customer_id">
            <childTable name="order_items" joinKey="order_id" parentKey="order_id" />
        </childTable>
        <childTable name="customer_addr" primaryKey="customer_addr_id" joinKey="customer_id"  parentKey="customer_id" />
    </table>
    <!-- <table name="oc_call" primaryKey="ID" dataNode="dn1$0-743" rule="latest-month-calldate" /> -->
    </schema>

2) 修改schema 標簽

修改前

        <!-- can have multi write hosts -->
        <writeHost host="hostM1" url="localhost:3306" user="root" password="123">
            <!-- can have multi read hosts -->
            <readHost host="hostS2" url="localhost:3306" user="root" password="123" />
        </writeHost>
        <writeHost host="hostS1" url="localhost:3306" user="root" password="123" />
        <!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->

修改后：

    <!-- can have multi write hosts -->
    <writeHost host="hostM1" url="localhost:3306" user="root"  password="YYBrhr_2018">
        <!-- can have multi read hosts -->
        <!-- <readHost host="hostS2" url="localhost:3306" user="root" password="123" /> -->
    </writeHost>
    <!-- <writeHost host="hostS1" url="localhost:3306" user="root" password="123" /> -->
    <!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
    </dataHost>

（3）修改role.xml

修改前：

<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>

修改后：

    <tableRule name="sharding-by-intfile">
        <rule>
            <columns>employee_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>hotnews_id</columns>
            <algorithm>mod-long</algorithm>
        </rule>
    </tableRule>
    <tableRule name="sharding-by-murmur">
        <rule>
            <columns>customer_id</columns>
            <algorithm>murmur</algorithm>
        </rule>
    </tableRule>

5、啟動mycat並測試

【1】啟動mycat

mycat start
mycat status

【2】測試

mysql -u root -p -P8066 -h 127.0.0.1

這里輸入的密碼，是在/home/rhr/soft/mycat/mycat/conf/server.xml里面看到的密碼

這樣就說明安裝成功了，安裝或者啟動mycat之前

分類: 數據庫

標簽: CentOS, mycat, MySQL

好文要頂關注我收藏該文

落淚秋
關注 - 2
粉絲 - 3

+加關注

CentOS7.5下安裝Mycat連接MySQL8.0

CentOS7.5下安裝Mycat連接MySQL8.0

Feedback

#1樓 [樓主] 回復 引用

#2樓 [樓主] 回復 引用

CentOS7.5 搭建MyCat1.6.6

1、環境及版本

2、安裝包准備

下載網站：http://dl.mycat.io/1.6.6/

【2】上傳至linux服務器：

3、開始安裝

【1】解壓

【2】安裝tree（可選，使目錄結構更好看）

4、創建用戶並修改配置文件

【1】為了更好的進入mycat，設置MYCAT_HOME的變量

【2】配置mycat文件

（1）修改server.xml

（2）修改schema.xml

1) 修改schema 標簽

2) 修改schema 標簽

（3）修改role.xml

5、啟動mycat並測試

免責聲明！

CentOS7.5下安裝Mycat連接MySQL8.0

CentOS7.5下安裝Mycat連接MySQL8.0

Feedback

#1樓 [樓主] 回復 引用

#2樓 [樓主] 回復 引用

CentOS7.5 搭建MyCat1.6.6

1、環境及版本

2、安裝包准備

下載網站：http://dl.mycat.io/1.6.6/

【2】上傳至linux服務器：

3、開始安裝

【1】解壓

【2】安裝tree（可選，使目錄結構更好看）

4、創建用戶並修改配置文件

【1】為了更好的進入mycat，設置MYCAT_HOME的變量

【2】配置mycat文件

（1）修改server.xml

（2）修改schema.xml

1) 修改schema 標簽

2) 修改schema 標簽

（3）修改role.xml

5、啟動mycat並測試

免責聲明！

#1樓 [樓主] 回復引用

#2樓 [樓主] 回復引用