Configure xcat to use mysql rather than sqlite. Note if you haven't changed your mysql root passwd you should read code for more info.

mod_xcat2mysql.sh

#!/bin/sh
MANAGMENTNODE=xcat
#  passwords used in script
#  root password for mysql 
#     ( if using user other than root modify below )
SQL_ROOT_PASS=rootpw
# The password used by xcat
#     ( you dont need to know this unless you decied to debug mysql )
XCAT_PASS=xcat_user_passwd
#
#  source xcat env just in case :)
source /etc/profile.d/xcat.sh
#  install mysql bits
yum -y install mysql  perl-DBD-MySQL mysql-server
#
#  Configure & customize server
mysql_install_db --user=mysql
cat <<EOF>>/etc/my.cnf
sql-mode=ANSI_QUOTES
max_connections=300
EOF
service mysqld start
chkconfig --level 345 mysqld on 
#  Uncomment this if this is the first time you have installed mysql
# mysqladmin -u root password $SQLPASS

# create mysql database and add xcat grants to use DB
mysql -u root -p${SQL_ROOT_PASS} -e " create database xcatdb; "
mysql -u root -p${SQL_ROOT_PASS} -e " grant all on xcatdb.* to xcatadmin@'$MANAGMENTNODE' identified by '${XCAT_PASS}';"
mysql -u root -p${SQL_ROOT_PASS} -e " grant all on xcatdb.* to xcatadmin@'localhost' identified by '${XCAT_PASS}';"

#  make a backup before moving on
mkdir --p /tmp/xcatbak
dumpxCATdb --p /tmp/xcatbak

#  configure xcat to use mysql rather than sqllite in /etc/xcat
#  rm -f /etc/xcat/cfgloc to revert
echo "mysql:dbname=xcatdb;host=$MANAGMENTNODE|xcatadmin|${XCAT_PASS}" >/etc/xcat/cfgloc
chmod 600 /etc/xcat/cfgloc

#  now that the config is speaking to mysql, the restore will be made to mysql :)
XCATBYPASS=1 restorexCATdb --p /tmp/xcatbak

#  and then confirm
service xcatd restart
#
#  if this all fails
#
#  rm -f /etc/xcat/cfgloc
#  service xcatd restart