centos7上部署社交网站之MYSQL主从服务

Posted 2020-12-25

部署mysql主从服务器，根据php程序员的要求创建数据库与表。

• 实验要求

主：192.168.43.229

从：192.168.43.198

主Master

• 开启时间同步

  # systemctl stop firewalld.service  //关闭防火墙
  # setenforce 0
  # vim /etc/ntp.conf
  末尾添加：server 127.127.43.0                    //本地是时钟源//
       fudge 127.127.43.0 stratum 8          //设置时间层级为8（限制在15内
  # systemctl start ntpd.service   //开启时间同步

  从Slave

• 开启时间同步

  # systemctl stop firewalld.service  //关闭防火墙
  # setenforce 0
  # systemctl start ntpd.service   //开启时间同步
  # /usr/sbin/ntpdate 192.168.43.229

  安装MySQL（主从都要）

# tar zxvf mysql-5.5.24.tar.gz -C /opt/
# yum install gcc  gcc-c++ make cmake 
ncurses-devel bison libaio-devel
# useradd  -s /sbin/nologin mysql //添加mysql用户并加入到mysql组
# mkdir /usr/local/mysql
# cd /opt/mysql-5.5.24.tar.gz
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql       
-DMYSQL_UNIX_ADDR=/home/mysql/mysql.sock 
-DDEFAULT_CHARSET=utf8                 
-DDEFAULT_COLLATION=utf8_general_ci 
-DWITH_EXTRA_CHARSETS=all                
-DWITH_MYISAM_STORAGE_ENGINE=1           
-DWITH_INNOBASE_STORAGE_ENGINE=1 
-DWITH_MEMORY_STORAGE_ENGINE=1 
-DWITH_READLINE=1                        
-DENABLED_LOCAL_INFILE=1                 
-DMYSQL_DATADIR=/home/mysql            
-DMYSQL_USER=mysql                  
-DMYSQL_TCP_PORT=3306                   
# make &&  make install   
# chown -R mysql.mysql /usr/local/mysql 
# export PATH=$PATH:/usr/local/mysql/bin/   *开机时刷新*          
或者可选择vi /etc/profile 在最后一行加入后 运行source /etc/profile 
# cp support-files/my-medium.cnf /etc/my.cnf                  
# cp support-files/mysql.server /etc/init.d/mysqld              
# chmod 755 /etc/init.d/mysqld         
# chkconfig --add /etc/init.d/mysqld   
# chkconfig mysqld --level 35 on   

初始化数据库

# /usr/local/mysql/scripts/mysql_install_db --user=mysql --ldata=/var/lib/mysql --basedir=/usr/local/mysql --datadir=/home/mysql
# ln -s /var/lib/mysql/mysql.sock /home/mysql/mysql.sock           /*直接建立软连接*/
# vi /etc/init.d/mysqld
basedir=/usr/local/mysql
datadir=/home/mysql
# service mysqld start
# mysqladmin -u root password ‘123123‘ //为root用户创建密码

主Mater

# vim /etc/my.cnf
server-id       = 11
log-bin=master-bin                         //主服务器日志文件//
log-slave-updates=true                     //从服务器更新二进制日志//
# systemctl restart mysqld.service
# mysql -u root -p
GRANT REPLICATION SLAVE ON *.* TO ‘myslave‘@‘192.168.43.%‘ IDENTIFIED BY ‘123456‘;
# FLUSH PRIVILEGES;
# show master status;

从Slave

# vim /etc/my.cnf
server-id       = 22
relay-log=relay-log-bin         //从主服务器上同步日志文件记录到本地//
relay-log-index=slave-relay-bin.index        //定义relay-log的位置和名称//
# systemctl restart mysqld.service
# mysql -u root -p
change master to master_host=‘192.168.43.229‘,master_user=‘myslave‘,master_password=‘123456‘,master_log_file=‘master-bin.000001‘,master_log_pos=338;
# start slave;
# show slave statusG;             //查看状态//

主Master

• 进入MySQL