mysql主从脚本

#!/bin/bash
#auto make install mysql AB Replication
#by author ale
#2019-4-29 09:25:44

MYSQL_SOFT="mariadb mariadb-devel mariadb-server mariadb-libs"
NUM=`rpm -qa|grep -i mariadb|wc -l`
INIT="mariadb.service"
CODE=$?

#Mysql To Install 
if [ $NUM -ne 0 -a -f /usr/lib/systemd/system/$INIT ];then
echo -e "33[32mThis Server Mysql already Install.33[0m"
read -p "Please ensure yum remove Mysql Server,yes or no": INPUT

if [ $INPUT == "y" -o $INPUT == "yes" ];then
yum remove $MYSQL_SOFT -y;rm -rf /var/lib/mysql /etc/my.cnf
yum install $MYSQL_SOFT -y
else
echo
fi
else
yum remove $MYSQL_SOFT -y;rm -rf /var/lib/mysql /etc/my.cnf
yum install $MYSQL_SOFT -y
if [ $CODE -ne 0 ];then
echo -e "33[32mThe Mysql Install successfully.33[0m"
else
echo -e "33[32mThe Mysql Install Failed.33[0m"
exit 1
fi
fi

cat >/etc/my.cnf<<EOF
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
symbolic-links=0
log-bin=mysql-bin
server-id=1
auto_increment_offset=1
auto_increment_increment=2
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
EOF

chown -R mysql.mysql /var/lib/mysql
mkdir -p /var/run/mysqld
chown -R mysql.mysql /var/run/mysqld
systemctl restart mariadb.service 
ps -ef|grep mysql

MYSQL_CONFIG(){

#Master Config Mysql
mysql -e "grant replication slave on *.* to 'tongbu'@'%' identified by '123456';"
MASTER_FILE=`mysql -e "show master status;"|tail -1|awk '{print $1}'`
MASTER_POS=`mysql -e "show master status;"|tail -1|awk '{print $2}'`

MASTER_IPADDR=$(ifconfig|grep "broadcast"|cut -d" " -f10)

read -p "Please ensure Input Slave IPaddr:" SLAVE_IPADDR

#Slave Config Mysql
ssh -l root $SLAVE_IPADDR "yum remove $MYSQL_SOFT -y;rm -rf /var/lib/mysql /etc/my.cnf;yum install $MYSQL_SOFT -y"
#ssh -l root $SLAVE_IPADDR "$my_cofig"
scp -r /etc/my.cnf root@$SLAVE_IPADDR:/etc/
ssh -l root $SLAVE_IPADDR "sed -i 's#server-id=1#server-id=2#g' /etc/my.cnf"
ssh -l root $SLAVE_IPADDR "sed -i '/log-bin=mysql-bin/d' /etc/my.cnf"

ssh -l root $SLAVE_IPADDR "chown -R mysql.mysql /var/lib/mysql"
ssh -l root $SLAVE_IPADDR "mkdir -p /var/run/mysqld"
ssh -l root $SLAVE_IPADDR "chown -R mysql.mysql /var/run/mysqld"

ssh -l root $SLAVE_IPADDR "systemctl restart mariadb.service"
ssh -l root $SLAVE_IPADDR "mysql -e "change master to master_host='$MASTER_IPADDR',master_user='tongbu',master_password='123456',master_log_file='$MASTER_FILE',master_log_pos=$MASTER_POS;""
ssh -l root $SLAVE_IPADDR "mysql -e "slave start;""
ssh -l root $SLAVE_IPADDR "mysql -e "show slave statusG;""
}

read -p "Please ensure your Server is Master and you will config mysql Replication? yes or no": INPUT
if [ $INPUT == "yes" -o $INPUT == "y" ];then
MYSQL_CONFIG
else
exit 0
fi