mariadb/mysql-prepare-db-dir.sh

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#!/bin/sh
# This script creates the mysql data directory during first service start.
# In subsequent starts, it does nothing much.
source "`dirname ${BASH_SOURCE[0]}`/mysql-scripts-common"
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# Returns content of the specified directory
# If listing files fails, fake-file is returned so which means
# we'll behave like there was some data initialized
# @param <dir> datadir
ls_check_datadir ()
{
ls -A "$1" 2>/dev/null
test $? -eq 0 || echo "fake-file"
}
# Checks whether datadir should be initialized
# @param <dir> datadir
should_initialize ()
{
case `ls_check_datadir "$1"` in
""|lost+found) true ;;
*) false ;;
esac
}
# If two args given first is user, second is group
# otherwise the arg is the systemd service file
if [ "$#" -eq 2 ]
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then
myuser="$1"
mygroup="$2"
else
# Absorb configuration settings from the specified systemd service file,
# or the default service if not specified
SERVICE_NAME="$1"
if [ x"$SERVICE_NAME" = x ]
then
SERVICE_NAME=@DAEMON_NAME@.service
fi
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myuser=`systemctl show -p User "${SERVICE_NAME}" |
sed 's/^User=//'`
if [ x"$myuser" = x ]
then
myuser=mysql
fi
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mygroup=`systemctl show -p Group "${SERVICE_NAME}" |
sed 's/^Group=//'`
if [ x"$mygroup" = x ]
then
mygroup=mysql
fi
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fi
# Set up the errlogfile with appropriate permissions
touch "$errlogfile"
ret=$?
# Provide some advice if the log file cannot be touched
if [ $ret -ne 0 ] ; then
errlogdir=$(dirname $errlogfile)
if ! [ -d "$errlogdir" ] ; then
echo "The directory $errlogdir does not exist."
elif [ -f "$errlogfile" ] ; then
echo "The log file $errlogfile cannot be touched, please, fix its permissions."
else
echo "The log file $errlogfile could not be created."
fi
echo "The daemon will be run under $myuser:$mygroup"
exit 1
fi
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chown "$myuser:$mygroup" "$errlogfile"
chmod 0640 "$errlogfile"
[ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile"
# Make the data directory if doesn't exist or empty
if should_initialize "$datadir" ; then
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# First, make sure $datadir is there with correct permissions
# (note: if it's not, and we're not root, this'll fail ...)
if [ ! -e "$datadir" -a ! -h "$datadir" ]
then
mkdir -p "$datadir" || exit 1
fi
chown "$myuser:$mygroup" "$datadir"
chmod 0755 "$datadir"
[ -x /sbin/restorecon ] && /sbin/restorecon "$datadir"
# Now create the database
echo "Initializing @NICE_PROJECT_NAME@ database"
CURRENT_TIME=`LANG=C date -u`
@bindir@/mysql_install_db --rpm --datadir="$datadir" --user="$myuser"
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ret=$?
if [ $ret -ne 0 ] ; then
echo "Initialization of @NICE_PROJECT_NAME@ database failed." >&2
echo "Perhaps @sysconfdir@/my.cnf is misconfigured or there is some problem with permissions of $datadir." >&2
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# Clean up any partially-created database files
if [ ! -e "$datadir/mysql/user.frm" ] && [ -d "$datadir" ] ; then
echo "Initialization of @NICE_PROJECT_NAME@ database was not finished successfully." >&2
echo "Files created so far will be removed." >&2
# Avoiding deletion of files not created by mysql_install_db is
# guarded by time check and sleep should help work-arounded
# potential issues on systems with 1 second resolution timestamps
# https://bugzilla.redhat.com/show_bug.cgi?id=1335849#c19
sleep 1
find "$datadir" -mindepth 1 -maxdepth 1 -newermt "$CURRENT_TIME" \
-not -name "lost+found" -exec rm -rf {} +
if [ $? -ne 0 ] ; then
echo "Removing of created files was not successfull." >&2
echo "Please, clean directory $datadir manually." >&2
fi
else
echo "However, part of data has been initialized and those will not be removed." >&2
echo "Please, clean directory $datadir manually." >&2
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fi
exit $ret
fi
# upgrade does not need to be run on a fresh datadir
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echo "@VERSION@-MariaDB" >"$datadir/mysql_upgrade_info"
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# In case we're running as root, make sure files are owned properly
chown -R "$myuser:$mygroup" "$datadir"
else
if [ -d "$datadir/mysql/" ] ; then
# mysql dir exists, it seems data are initialized properly
echo "Database MariaDB is probably initialized in $datadir already, nothing is done."
echo "If this is not the case, make sure the $datadir is empty before running `basename $0`."
else
# if the directory is not empty but mysql/ directory is missing, then
# print error and let user to initialize manually or empty the directory
echo "Database MariaDB is not initialized, but the directory $datadir is not empty, so initialization cannot be done."
echo "Make sure the $datadir is empty before running `basename $0`."
exit 1
fi
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fi
exit 0