day33(mysql57主从从+mycat读写分离+java项目结合mycat数据库+lvs_dr轮询调用java项目)

1.设置主从从mysql57服务器

（1）配置主数据库

$root@msater_5 \~$ # systemctl stop $root@msater_5 \~$ # setenforce 0

$root@msater_5 \~$ # systemctl disable Removed symlink /etc/systemd/system/multi-user.target.wants/# ls

anaconda-ks.cfg mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

$root@msater_5 \~$ # tar -xf mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

$root@msater_5 \~$ # ls

anaconda-ks.cfg mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

mysql-5.7.44-linux-glibc2.12-x86_64

$root@msater_5 \~$ # cp -r mysql-5.7.44-linux-glibc2.12-x86_64 /usr/local/mysql

$root@msater_5 \~$ # rm -rf /etc/my.cnf

$root@msater_5 \~$ # mkdir /usr/local/mysql/mysql- $root@msater_5 \~$ # useradd -r -s /sbin/nologin mysql

$root@msater_5 \~$ # chown mysql:mysql /usr/local/mysql/mysql- $root@msater_5 \~$ # chown 750 /usr/local/mysql/mysql- $root@msater_5 \~$ # /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql

2024-08-21T09:39:14.991434Z 0 $Warning$ TIMESTAMP with implicit DEFAULT value is deprecated. Please use -

-explicit_defaults_for_timestamp server option (see documentation for more details).

2024-08-21T09:39:15.126969Z 0 $Warning$ InnoDB: New log LSN=45790

2024-08-21T09:39:15.150963Z 0 $Warning$ InnoDB: Creating foreign key constraint system tables.

2024-08-21T09:39:15.214887Z 0 $Warning$ No existing UUID has been found, so we assume that this is the

2024-08-21T09:39:15.215926Z 0 $Warning$ Gtid table is not ready to be used. Table 'mysql.gtid_executed'

cannot be opened.

2024-08-21T09:39:16.034519Z 0 $Warning$ A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or

higher.

2024-08-21T09:39:16.034537Z 0 $Warning$ A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or

higher.

2024-08-21T09:39:16.036321Z 0 $Warning$ CA certi2024-08-21T09:39:16.384066Z 1 $Note$ A temporary password is generated for root@localhost: RV3DtuxCi;A-

$root@msater_5 \~$ # cp /usr/local/mysql/support- $root@msater_5 \~$ # vim /usr/local/mysql/my.cnf