shell使用mysqld_multi自动做多实例从库脚本

复制代码

代码如下:

# cat doallslave.sh

#!/bin/sh

#code by scpman

#mail:scpman@live.com

#blog:http://www.scpman.com

#name:”doallslave.sh”

helpinfo()

{

echo -e tthelp 查看帮助信息

echo -e tt自动做allslave从库脚本使用帮助

echo -e ttslavename 只能是xxx_xxx这种命令例如:zq2013_test1

echo -e tt添加一个新从库 三个参数addslave    slavename ip         mysql.tar-name rootpasswd

echo -e tt例子：         addslave  slavename 10.0.88.88  mysql.xxx.tar passwd

echo -e tt删除一个从库  三个参数 delslave    slavename

echo -e tt例子：         delslave slavename

}

#如果用户没有输入参数(或者输入错误的参数)，或者输入的参数为help,则显示帮助信息，并退出。

if [ -z “$1”  -o “$1” = “help” ]

then

helpinfo

exit

fi

mulu_create()

{

    if [ -d $1 ]

    then

        echo “$1 is have”;

    else

        mkdir -p $1;

        echo “create $1 ok!”

    fi

}

check_mycnf()

{

    temp1=`tail -n 1 /etc/my.cnf |grep “server_id”`;

    if [ -z “$temp1” ]

    then

sed -i “”  $d /etc/my.cnf

        check_mycnf

    else   

        echo “/etc/my.cnf符合规范”;

    fi

}

fuc_addslave()

{

if [ -n “$1” -a -n “$2” -a -n “$3” -a -n “$4” ]

then

    slavename=$1

    masterip=$2

    bao_path=$3

    passwd=$4

else

    echo “1 2 3 4 is null!shell exit now”

helpinfo

    exit

fi

#检查my.cnf是否正确

check_mycnf

echo “开始创建数据包存放目录！”

sleep 1

mulu_create “/usr/doslave/${slavename}/”

mulu_create “/usr/db_backups/${slavename}_mysql_backup/”

mulu_create “/usr/mysql_backup/${slavename}_mysql_backup/”

mulu_create “/usr/mysql_backup_temp/${slavename}_mysql_backup/”

tar -zxvf $bao_path -C /usr/doslave/${slavename}/;

rm -rf /usr/db_backups/${slavename}_mysql_backup/*;

mv /usr/doslave/${slavename}/usr/dlm_db/mysql/*  /usr/db_backups/${slavename}_mysql_backup/;

chown -R mysql:mysql /usr/db_backups/${slavename}_mysql_backup/;

echo “数据放置完成！开始生成配置文件”

mulu_create “/usr/doslave/confbak”

cp /etc/my.cnf /usr/doslave/confbak/my.cnf_`date +%Y%m%d%H%M%S`;

cp /usr/mysql_backup/dblist /usr/doslave/confbak/dblist_`date +%Y%m%d%H%M%S`;

#######################my.cnf#############

tempconf=”/usr/doslave/${slavename}/mycnf.temp”

tail -n 6 /etc/my.cnf > $tempconf;

sleep 2

old_mysqld=”`cat $tempconf |grep “mysqld” | sed -e “s/[mysqld//;s/]//;”`”

old_port=”`cat $tempconf | grep port|awk {print $3}`”

old_db_name=”`cat $tempconf | grep “pid-file” | awk -F/ {print $4 }|awk -F_  {print $1 “_” $2}`”

old_server_id=”`cat $tempconf | grep “server_id”|awk {print $3}`”

new_mysqld=”`expr ${old_mysqld} + 1`”

new_port=”`expr ${old_port} + 1`”

new_db_name=”$slavename”

new_server_id=`echo $masterip |awk -F. {print $3$4″9″}`

old_mysqld=”`echo $old_mysqld`”

old_port=”`echo $old_port`”

old_db_name=”`echo $old_db_name`”

old_server_id=”`echo $old_server_id`”

sed -i “” “s/$old_mysqld/$new_mysqld/g;s/$old_port/$new_port/g;s/$old_db_name/$new_db_name/g;s/$old_server_id/$new_server_id/g;”$tempconf;

#cat $tempconf

#echo —>

sleep 2

echo “” >> /etc/my.cnf;

cat $tempconf >> /etc/my.cnf

echo “mysqld${new_mysqld}” >> /usr/mysql_backup/dblist;

###############################################

echo “my.cnf 和dblist已经修改完成！”

/usr/local/bin/mysqld_multi start $new_mysqld

sleep 1

BIN=`cat /usr/db_backups/${slavename}_mysql_backup/pos_mysql|awk {print $1}`;

POS=`cat /usr/db_backups/${slavename}_mysql_backup/pos_mysql|awk {print $2}`;

#echo $passwd

echo $BIN

echo $POS

echo /usr/local/bin/mysql -uroot -p$passwd –socket=/tmp/mysql_${new_db_name}.sock

sleep 2

/usr/local/bin/mysql -uroot -p$passwd –socket=/tmp/mysql_${new_db_name}.sock <

stop slave;

reset slave;

CHANGE MASTER TO MASTER_HOST=”$masterip”, MASTER_USER=slaveuser,MASTER_PASSWORD=slave123213, MASTER_LOG_FILE=”$BIN”,MASTER_LOG_POS=$POS;

start slave;

FFF

rm -rf /usr/doslave/${slavename}/;

clear

/usr/local/bin/mysql -uroot -p$passwd –socket=/tmp/mysql_${new_db_name}.sock -e “show slave statusG”

echo “服务器: ${masterip} 的从库完成！请刷新并查看php从库监控”

}

fuc_delslave()

{

if [ -n “$1” ]

then

    nousedbname=$1

else

echo “slavename is null!shell exit now”

    helpinfo

    exit

fi

if [ -d /usr/db_backups/${nousedbname}_mysql_backup ]

then

    echo “/usr/db_backups/${nousedbname}_mysql_backup 存在！”

else

echo “/usr/db_backups/${nousedbname}_mysql_backup这个目录不存在，请确认您的输入是否正确，脚本退出！”

    exit;

fi

del_id=”`grep -B1 “$nousedbname” /etc/my.cnf|grep mysqld|sed -e “s/[//;s/]//”;`”

stop_id=”`echo $del_id|sed -e “s/mysqld//;”`”

echo $del_id

echo $stop_id

/usr/local/bin/mysqld_multi stop $stop_id

rm -rf /usr/db_backups/${nousedbname}_mysql_backup;

sed -i “/$del_id/d” /usr/mysql_backup/dblist

sed -i “/$del_id/d” /etc/my.cnf

sed -i “/$nousedbname/d” /etc/my.cnf

echo “已经删除，请刷新从库监控”

}

if [ “$1” = “addslave” ]

then

echo 添加新从库

sleep 3

fuc_addslave $2 $3 $4 $5

elif [ “$1” = “delslave” ]

then

echo 删除

fuc_delslave $2

else

echo $1 此参数是非法的

helpinfo

exit

fi