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|
#!/bin/bash
set -e
# shellcheck source=/dev/null
. /usr/share/debconf/confmodule
if [ -n "$DEBIAN_SCRIPT_DEBUG" ]
then
set -v -x
DEBIAN_SCRIPT_TRACE=1
fi
${DEBIAN_SCRIPT_TRACE:+ echo "#42#DEBUG# RUNNING $0 $*" 1>&2 }
MYADMIN="/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf"
MARIADBD_USERS="root"
# Check if user 'mysql' exists before referring to it in pgrep
# to avoid pgrep erroring on 'invalid user name'
if id mysql > /dev/null 2>&1
then
MARIADBD_USERS="$MARIADBD_USERS,mysql"
fi
# Try to stop the server in a sane way. If it does not success let the admin
# do it himself. No database directories should be removed while the server
# is running! Another mariadbd in e.g. a different chroot is fine for us.
stop_server() {
# Return immediately if there are no mysqld processes running
# as there is no point in trying to shutdown in that case.
if ! pgrep -x -u "$MARIADBD_USERS" --nslist pid --ns $$ "mysqld|mariadbd" > /dev/null
then
return
fi
set +e
invoke-rc.d mariadb stop
invoke-rc.d mysql stop # Backwards compatibility
errno=$?
set -e
# systemctl could emit exit code 100=no init script (fresh install)
if [ "$errno" != 0 ] && [ "$errno" != 100 ]
then
echo "Attempt to stop MariaDB/MySQL server returned exitcode $errno" 1>&2
echo "There is a MariaDB/MySQL server running, but we failed in our attempts to stop it." 1>&2
echo "Check if there is any server running with 'pgrep \"mysqld|mariadbd\"' and" 1>&2
echo "try to stop it yourself by issuing 'invoke-rc.d mariadb stop'." 1>&2
db_stop
exit 1
fi
}
case "$1" in
purge|remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
if [ -n "$($MYADMIN ping 2>/dev/null)" ]
then
stop_server
sleep 2
fi
;;
*)
echo "postrm called with unknown argument '$1'" 1>&2
exit 1
;;
esac
#
# - Purge logs and data only if they are ours (#307473)
# - Remove the mysql user only after all his owned files are purged.
# - Cleanup the initscripts only if this was the last provider of them
#
if [ "$1" = "purge" ] && [ -f "/var/lib/mysql/debian-__MARIADB_MAJOR_VER__.flag" ]
then
# we remove the mysql user only after all his owned files are purged
rm -f /var/log/mysql.{log,err}{,.0,.[1234567].gz}
rm -rf /var/log/mysql
db_input high "mariadb-server/postrm_remove_databases" || true
db_go || true
db_get "mariadb-server/postrm_remove_databases" || true
if [ "$RET" = "true" ]
then
# never remove the debian.cnf when the databases are still existing
# else we ran into big trouble on the next install!
rm -f /etc/mysql/debian.cnf
# Remove all contents from /var/lib/mysql except if it's a
# directory with file system data. See #829491 for details and
# #608938 for potential mysql-server leftovers which erroneously
# had been renamed.
# Attempt removal only if the directory hasn't already been removed
# by dpkg to avoid failing on "No such file or directory" errors.
if [ -d /var/lib/mysql ]
then
find /var/lib/mysql -mindepth 1 \
-not -path '*/lost+found/*' -not -name 'lost+found' \
-not -path '*/lost@002bfound/*' -not -name 'lost@002bfound' \
-delete
# "|| true" still needed as rmdir still exits with non-zero if
# /var/lib/mysql is a mount point
rmdir --ignore-fail-on-non-empty /var/lib/mysql || true
fi
rm -rf /run/mysqld # this directory is created by the init script, don't leave behind
userdel mysql || true
fi
fi
#DEBHELPER#
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