ansible-roles/mysql/files/mysql-backup.sh

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#!/bin/bash
RETVAL=0
MY_BACKUP_USE_NAGIOS="False"
MY_BACKUP_DIR=/var/lib/mysql-backup
MY_DATA_DIR=/var/lib/mysql
N_DAYS_TO_SPARE=7
# Exclude list
EXCLUDE_LIST='performance_schema'
if [ -f /etc/default/mysql_backup ] ; then
. /etc/default/mysql_backup
fi
if [ ! -f /root/.my.cnf ] ; then
exit 1
fi
umask 0077
# Year month day - hour minute second
SAVE_TIME=$( date +%Y%m%d-%H%M%S )
TIMESTAMP=
TIMESTAMP_LOG=$MY_BACKUP_DIR/.timestamp
if [ ! -d $MY_BACKUP_DIR ] ; then
mkdir -p $MY_BACKUP_DIR
fi
if [ ! -d $MY_BACKUP_LOG_DIR ] ; then
mkdir -p $MY_BACKUP_LOG_DIR
fi
if [ ! -d $MY_BACKUP_DIR/history ] ; then
mkdir -p $MY_BACKUP_DIR/history
fi
chmod 700 $MY_BACKUP_DIR
LOCKFILE=$MY_DATA_DIR/.mysqldump.lock
NAGIOS_LOG=$MY_BACKUP_DIR/.nagios-status
if [ ! -f $LOCKFILE ] ; then
touch $LOCKFILE
if [ "${MY_BACKUP_USE_NAGIOS}" == "True" ] ; then
> $NAGIOS_LOG
fi
for db in $( mysql -Bse "show databases;" | grep -v $EXCLUDE_LIST ) ; do
mysqldump -f --flush-privileges --opt $db > $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME} 2> $MY_BACKUP_LOG_DIR/$db.log
DUMP_RESULT=$?
chmod 600 $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME}
if [ "${MY_BACKUP_USE_NAGIOS}" == "True" ] ; then
if [ $DUMP_RESULT -ne 0 ] ; then
echo "$db:FAILED" >> $NAGIOS_LOG
RETVAL=$DUMP_RESULT
else
echo "$db:OK" >> $NAGIOS_LOG
fi
fi
pushd ${MY_BACKUP_DIR}/ >/dev/null 2>&1
rm -f $db.sql
ln -s $MY_BACKUP_DIR/history/${db}.sql.${SAVE_TIME} ./$db.sql
popd >/dev/null 2>&1
done
# Do a "flush-hosts" after the backup
mysqladmin flush-hosts 2> $MY_BACKUP_LOG_DIR/flush-hosts.log
TIMESTAMP=$( date +%s )
echo "$TIMESTAMP" > $TIMESTAMP_LOG
rm -f $LOCKFILE
else
echo "Old backup still running" > /var/log/mysql-backup.log
RETVAL=2
if [ "${MY_BACKUP_USE_NAGIOS}" == "True" ] ; then
echo "old backup still running:WARNING" >> $NAGIOS_LOG
fi
fi
# Remove the old backups
find ${MY_BACKUP_DIR}/history -ctime +$N_DAYS_TO_SPARE -exec rm -f {} \;
exit $RETVAL