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

#!/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

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 -R 700 $MY_BACKUP_DIR
LOCKFILE=$MY_DATA_DIR/.mysqldump.lock
NAGIOS_LOG=$MY_BACKUP_DIR/.nagios-status
# Exclude list
EXCLUDE_LIST='performance_schema'

if [ ! -f $LOCKFILE ] ; then
    touch $LOCKFILE
    if [ "${MY_BACKUP_USE_NAGIOS}" == "True" ] ; then
        > $NAGIOS_LOG
    fi
    for db in $( /bin/ls -1 /var/lib/mysql/ | grep -v $EXCLUDE_LIST ) ; do
   	    if [ -d /var/lib/mysql/$db ] ; then
            if [ -f $MY_BACKUP_DIR/$db.sql ] ; then
            	mv -f $MY_BACKUP_DIR/$db.sql $MY_BACKUP_DIR/history
            fi
            #mysqldump -uroot -f --opt -p$MYSQLPASS $db > $MY_BACKUP_DIR/$db.sql 2> $MY_BACKUP_DIR/log/$db.log
            mysqldump -f --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
        fi
    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 $LOCKFILE
else
    RETVAL=2
    if [ "${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