某些场景下需要将数据库分开备份，有些场景又需要将所有数据库合在一起备份，特此整理此备份脚本
#!/bin/bash
##===========================================================================##
## use mysqldump to backup all user database, keey days.
##===========================================================================##
## mysql_backup_database option:
## ONE_BACKUP: backup all user database into one zip file
## MORE_BACKUP: backup user database into different zip files.
## DATABASE_NAME: only backup the specified database. ##===========================================================================##
## mysql backup config
mysql_exe="/export/servers/mysql/bin/mysql"
mysqldump_exe="/export/servers/mysql/bin/mysqldump"
mysql_backup_folder="/export/data/mysql/dumps/"
mysql_backup_log="${mysql_backup_folder}mysql_dump_log.txt"
mysql_backup_log_his="${mysql_backup_folder}mysql_dump_log_his.txt"
mysql_backup_host="127.0.0.1"
mysql_backup_port=
mysql_backup_user="root"
mysql_backup_password="rootpwd"
mysql_backup_database="ONE_BACKUP"
mysql_backup_table_name_list=""
mysql_backup_keep_days= ##====================================================##
## get mysql version
##====================================================##
function get_mysql_version()
{
master_version_tmp=`${mysql_exe} \
--host="${mysql_backup_host}" --port=${mysql_backup_port} \
--user="${mysql_backup_user}" --password="${mysql_backup_password}" \
-e "select @@version;"`
if [[ master_version_tmp == 5.5.* ]]
then
mysql_version="mysql55"
elif [[ master_version_tmp == 5.6.* ]]
then
mysql_version="mysql56"
else
mysql_version="mysql57"
fi
} ##===========================================================================##
## remove expired backup file
## keep the backup file of the last N days
function remove_expired_file()
{
echo "$(date "+%Y-%m-%d %H:%M:%S") start to remove expired backup file." >> ${mysql_backup_log}
echo "keep days: ${mysql_backup_keep_days}" >> ${mysql_backup_log}
find "${mysql_backup_folder}" -mtime +${mysql_backup_keep_days} -name "*" -exec rm -rf {} \;
echo "$(date "+%Y-%m-%d %H:%M:%S") start to mysqldump." >> ${mysql_backup_log}
} ##===========================================================================##
## backup single database
function backup_single_database()
{
current_database_name=$
mysql_backup_file_path="${mysql_backup_folder}""${current_database_name}-`date -I`.sql.gz"
echo "$(date "+%Y-%m-%d %H:%M:%S") start to backup database ${current_database_name} to ${mysql_backup_file_path}" >> ${mysql_backup_log} ($mysqldump_exe \
--host="${mysql_backup_host}" \
--port=$mysql_backup_port \
--user="${mysql_backup_user}" \
--password="${mysql_backup_password}" \
--databases "${current_database_name}" \
--set-gtid-purged=OFF \
--single-transaction \
--hex-blob --opt --quick \
--events --routines --triggers \
--default-character-set="utf8" \
--master-data= \
|gzip > "${mysql_backup_file_path}" \
) >>${mysql_backup_log} >>${mysql_backup_log} if [ $? = ]
then
echo "$(date "+%Y-%m-%d %H:%M:%S") backup database ${current_database_name} success." >> ${mysql_backup_log}
else
echo "$(date "+%Y-%m-%d %H:%M:%S") backup database ${current_database_name} failed." >> ${mysql_backup_log}
fi
} function backup_more_databases()
{
for database_name in ${database_name_list};
do
if [ "$database_name" == "" ]
then
echo "database name can be empty"
else
backup_single_database "${database_name}"
fi
done
} function backup_all_databases()
{
mysql_backup_file_path="${mysql_backup_folder}""full-backup-`date -I`.sql.gz"
echo "$(date "+%Y-%m-%d %H:%M:%S") start to backup all databases to ${mysql_backup_file_path}" >> ${mysql_backup_log} ($mysqldump_exe \
--host="${mysql_backup_host}" \
--port=$mysql_backup_port \
--user="${mysql_backup_user}" \
--password="${mysql_backup_password}" \
--all-databases \
--ignore-table='mysql.*' \
--ignore-table='information_schema.*' \
--ignore-table='performance_schema.*' \
--ignore-table='sys.*' \
--set-gtid-purged=OFF \
--single-transaction \
--hex-blob --opt --quick \
--events --routines --triggers \
--default-character-set="utf8" \
--master-data= \
|gzip > "${mysql_backup_file_path}" \
) >>${mysql_backup_log} >>${mysql_backup_log} if [ $? = ]
then
echo "$(date "+%Y-%m-%d %H:%M:%S") backup database ${current_database_name} success." >> ${mysql_backup_log}
else
echo "$(date "+%Y-%m-%d %H:%M:%S") backup database ${current_database_name} failed." >> ${mysql_backup_log}
fi
} function backup_databases()
{
if [ "${mysql_backup_database}" == "ONE_BACKUP" ];
then
backup_all_databases
elif [ "${mysql_backup_database}" == "MORE_BACKUP" ];
then
database_name_list=`${mysql_exe} --host="${mysql_backup_host}" --port=$mysql_backup_port --user="${mysql_backup_user}" --password="${mysql_backup_password}" -Ne "show databases;" |egrep -v "(mysql|sys|test|information_schema|performance_schema|dada_call_center)"`
backup_more_databases
else
database_name_list=${mysql_backup_database}
backup_more_databases
fi
} ##====================================================##
## . dump user script on mysql
## . this script only can be used on mysql 5.7
##====================================================##
function dump_user_script_5_7()
{
script_file_path="${mysql_backup_folder}""user-script-`date -I`.sql"
echo "$(date "+%Y-%m-%d %H:%M:%S") start backup user script." >> ${mysql_backup_log}
(echo "select concat('show create user ''',user,'''@''',host, ''';
','show grants for ''',user,'''@''',host, ''';')
from mysql.user where user <>'root' and user<>'' and host <> '' " | \
${mysql_exe} --host="${mysql_backup_host}" --port=${mysql_backup_port} \
--user="${mysql_backup_user}" --password="${mysql_backup_password}" -N | \
${mysql_exe} --host="${mysql_backup_host}" --port=${mysql_backup_port} \
--user="${mysql_backup_user}" --password="${mysql_backup_password}" -N | \
sed "s/$/;/" >> ${script_file_path}) >>${mysql_backup_log} >>${mysql_backup_log} if [ $? = ]
then
echo "$(date "+%Y-%m-%d %H:%M:%S") backup user script success." >> ${mysql_backup_log}
else
echo "$(date "+%Y-%m-%d %H:%M:%S") backup user script failed." >> ${mysql_backup_log}
fi
} ##====================================================##
## . dump user script on mysql
## . this script only can be used on mysql 5.5
##====================================================##
function dump_user_script_5_5()
{
script_file_path="${mysql_backup_folder}""user-script-`date -I`.sql"
echo "$(date "+%Y-%m-%d %H:%M:%S") start backup user script." >> ${mysql_backup_log} (echo "select concat('show grants for ''',user,'''@''',host, ''';')
from mysql.user where user <>'root' and user<>'' and host <> '' " | \
${mysql_exe} --host="${mysql_backup_host}" --port=${mysql_backup_port} \
--user="${mysql_backup_user}" --password="${mysql_backup_password}" -N | \
${mysql_exe} --host="${mysql_backup_host}" --port=${mysql_backup_port} \
--user="${mysql_backup_user}" --password="${mysql_backup_password}" -N | \
sed "s/$/;/" >> ${script_file_path}) >>${mysql_backup_log} >>${mysql_backup_log} if [ $? = ]
then
echo "$(date "+%Y-%m-%d %H:%M:%S") backup user script success." >> ${mysql_backup_log}
else
echo "$(date "+%Y-%m-%d %H:%M:%S") backup user script failed." >> ${mysql_backup_log}
fi
} ##===========================================================================## function backup_mysql_user()
{
if [[ mysql_version == "mysql55" ]]
then
dump_user_script_5_5
else
dump_user_script_5_7
fi
} ##===========================================================================##
function mysql_backup()
{
echo > ${mysql_backup_log}
get_mysql_version
remove_expired_file
backup_databases
backup_mysql_user
cat ${mysql_backup_log} > ${mysql_backup_log_his}
} mysql_backup