4  poweroff

    5  yum install -y vim  wget net-tools

    6  wget http://172.25.254.254/materials/mysql-5.7.repo -P /etc/yum.repos.d/

    7  cd /etc/yum.repos.d/

    8  ll

    9  yum cleanall

   10* 

   11  yum makecache

   12  rpm -e mariadb-libs --nodeps

   13  yum -y install mysql-community-server

systemctl start mysqld

   23  grep password /var/log/mysqld.log 

 mysqladmin -uroot -p'(Uploo00ing)' password '(Uploo00king)'

 mysql -uroot -p'(Uploo00king)'

change master to master_host='172.25.8.11',master_user='slave',master_password='(Uploo00king)',master_log_file='mastera.000005',MASTER_LOG_POS=154;

=============================================================

在wokestation中批量安装mysql-community-server

[root@workstation0 ~]# ssh-keygen

[root@workstation0 ~]# for i in 11 12 13 14 ;do ssh-copy-id root@172.25.8.$i;done

wget http://172.25.254.254/materials/mysql-5.7.repo

for i in 11 12 13 14;do scp mysql-5.7.repo 172.25.8.$i:/etc/yum.repos.d/; done

for i in 11 12 13 14 ;do ssh root@172.25.8.$i "yum clean all; yum makecache";done

for i in 11 12 13 14 ;do ssh root@172.25.8.$i "rpm -e --nodeps mariadb-libs";done

for i in 11 12 13 14 ;do ssh root@172.25.8.$i "yum -y install vim mysql-community-server";done

主从同步Last_IO_Errno:1593  解决方法：masterb:>stop slave   mastera:systemctl restart mysqld  masterb:>start slave