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#!/bin/sh
test -f /root/.my.cnf || exit 1
must_have ()
{
# Here, using "which" would not be appropriate since it also depends on
# PATH being set correctly. The type builtin command is unaffected by the
# environment.
type $1 >/dev/null
if [ $? -ne 0 ]; then
echo "Command '$1' not found, did you correctly set PATH ? Its current value is: $PATH" >&2
exit 1
fi
}
# Since this script is doing something rather unsafe with the database, we want
# to be really careful to have all the necessary tools before doing anything so
# that we don't end up in an inconsistent state.
must_have sleep
must_have mysql
must_have killall
must_have chown
rootpw=$(grep password /root/.my.cnf | sed -e 's/^[^=]*= *\(.*\) */\1/')
/usr/bin/mysqladmin --defaults-file=/root/.my.cnf status > /dev/null && echo "Nothing to do as the password already works" && exit 0
/usr/bin/systemctl stop mariadb
/usr/libexec/mysqld --skip-grant-tables --user=root --datadir=/var/lib/mysql/data --log-bin=/var/lib/mysql/mysql-bin --pid-file=/var/run/mariadb/mariadb.pid &
sleep 5
mysql -u root mysql <<EOF
UPDATE mysql.user SET Password=PASSWORD('$rootpw') WHERE User='root' AND Host='localhost';
DELETE FROM mysql.user WHERE (User='root' AND Host!='localhost') OR USER='';
FLUSH PRIVILEGES;
EOF
kill `cat /var/run/mariadb/mariadb.pid`
sleep 15
# chown to be on the safe side
ls -al /var/lib/mysql/mysql-bin.* &> /dev/null
[ $? == 0 ] && chown mysql.mysql /var/lib/mysql/mysql-bin.*
chown -R mysql.mysql /var/lib/mysql/data/
/usr/bin/systemctl start mariadb
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