Mycat中间件实现Mysql主从读写分离

环境规划：

Mycat下载地址：http://dl.mycat.io/1.6.7.3/20190828135747/Mycat-server-1.6.7.3-release-20190828135747-linux.tar.gz Mysql下载地址： http://mirrors.163.com/mysql/Downloads/MySQL-5.7/mysql-5.7.27-linux-glibc2.12-x86_64.tar.gz Mycal管理集群端口：[root@k8s01 conf]# mysql -h 127.0.0.1 -u root -p123456 -P 9066 Mycat数据端口：[root@k8s01 conf]# mysql -h 127.0.0.1 -u root -p123456 -P 8066 1.下载安装mysql(1台master节点和2台slave节点) [root@k8s01 soft]# wget http://mirrors.163.com/mysql/Downloads/MySQL-5.7/mysql-5.7.27-linux-glibc2.12-x86_64.tar.gz [root@k8s01 soft]# tar xvf mysql-5.7.27-linux-glibc2.12-x86_64.tar.gz -C /usr/local/ [root@k8s01 soft]# cd /usr/local/ [root@k8s01 local]# mv mysql-5.7.27-linux-glibc2.12-x86_64/ mysql-5.7.27 [root@k8s01 local]# chown -R root:root mysql-5.7.27/ [root@k8s01 local]# cd mysql-5.7.27/ [root@k8s01 mysql-5.7.27]# mkdir data [root@k8s01 mysql-5.7.27]# useradd -r -M -s /bin/nologin mysql [root@k8s01 mysql-5.7.27]# chown -R mysql:mysql data/ [root@k8s01 mysql-5.7.27]# ./bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql-5.7.27 --datadir=/usr/local/mysql-5.7.27/data 2019-11-02T04:24:41.908404Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2019-11-02T04:24:46.687678Z 0 [Warning] InnoDB: New log files created, LSN=45790 2019-11-02T04:24:47.428823Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2019-11-02T04:24:47.487404Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: b42cef88-fd28-11e9-a5cc-000c29ee86d5. 2019-11-02T04:24:47.488204Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2019-11-02T04:24:47.612739Z 1 [Note] A temporary password is generated for root@localhost: 3m;5yQ_7T#jc --登陆密码 [root@k8s01 mysql-5.7.27]# cp -a support-files/mysql.server /etc/init.d/mysqld [root@k8s01 mysql-5.7.27]# chkconfig --add mysqld [root@k8s01 mysql-5.7.27]# chkconfig mysqld on [root@k8s01 mysql-5.7.27]# vim /etc/init.d/mysqld basedir=/usr/local/mysql-5.7.27 datadir=/usr/local/mysql-5.7.27/data [root@k8s01 mysql-5.7.27]# vim /etc/my.cnf [mysqld] basedir=/usr/local/mysql-5.7.27 datadir=/usr/local/mysql-5.7.27/data socket=/tmp/mysql.sock symbolic-links=0 server_id=10 binlog_format=ROW max_binlog_size=2G sync_binlog=1 binlog_cache_size=64M log_bin=bin-log log_bin_index=bin-index [mysqld_safe] log-error=/usr/local/mysql-5.7.27/data/mariadb.log pid-file=/usr/local/mysql-5.7.27/data/mariadb.pid [root@k8s01 mysql-5.7.27]# /etc/init.d/mysqld restart ERROR! MySQL server PID file could not be found! Starting MySQL.Logging to '/usr/local/mysql-5.7.27/data/mariadb.log'. ... SUCCESS! [root@k8s01 mysql-5.7.27]# vim /etc/profile export PATH=$PATH:/usr/local/mysql-5.7.27/bin [root@k8s01 mysql-5.7.27]# mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.27 Copyright (c) 2000, 2019, 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 respectiveowners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> set password=password('System135'); Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> exit Bye [root@k8s01 mysql-5.7.27]# mysql -u root -pSystem135 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 6 Server version: 5.7.27 MySQL Community Server (GPL) Copyright (c) 2000, 2019, 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. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | +--------------------+ 4 rows in set (0.00 sec) mysql>   2.master节点和slave节点做主从 master节点：