结合Git实现Mysql差异备份,可用于生产环境
#!/bin/bash#created by lihuibin
#date 2013-8-30
#descexec mysqldump mysqlsql file from mysqlserver to git
time=`date '+%F %R'`
mysql_user="backup_user"
mysql_password="backup_passwd"
mysql_host="127.0.0.1"
mysql_port="3306"
tar_path=/root/shell/mysql_backup
backup_db_arr=("testdb1" "testdb2")#需要备份的数据库列表
#backup_db_arr=()
exclude_db_arr=("exdb1" "exdb2") #排除备份的数据库列表当backup_db_arr为空的时候,exclude_db_arr生效,不为空时仅backup_db_arr有效
[ -d $tar_path ]
is_first_backup=$?
in_array() {
local hay needle=$1
shift
for hay; do
[[ $hay == $needle ]] && return 0
done
return 1
}
backup_length=${#backup_db_arr[@]}
#echo $backup_length
exclude_length=${#exclude_db_arr[@]}
#echo $exclude_length;
#in_array "dopool_blog" ${backup_db_arr[@]} && echo hit || echo miss
for dbname in `mysql -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password -e "show databases" |sed '1,2d'`
do
if [ $backup_length -gt 0 ]; then
in_array $dbname ${backup_db_arr[@]} || continue
elif [ $backup_length -eq 0 -a $exclude_length -gt 0 ]; then
in_array $dbname ${exclude_db_arr[@]} && continue
fi
for tablename in `mysql -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password -e "show tables from $dbname" |sed '1d'`
do
mkdir -p $tar_path/$dbname/
/usr/bin/mysqldump --lock-tables=TRUE--extended-insert=FALSE --complete-insert=TRUE -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password $dbname $tablename > $tar_path/$dbname/$tablename.sql
done
done
init_git(){
tar_path=`dirname $1`
dir_name=`basename $1`
cd $1
git init
git add .
git commit -a -m "init $time"
cd $tar_path
git clone --bare $dir_name/
rm -rf $dir_name
git clone $dir_name.git
}
[ $is_first_backup -eq 1 ] && init_git $tar_path || {
cd $tar_path;
git add .;
git commit -a -m " back up $time";
git push;
}
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