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|
#!/bin/bash
set -e
# It is possible that Debconf has already been removed, too.
if [ -f /usr/share/debconf/confmodule ]; then
. /usr/share/debconf/confmodule
fi
if [ -n "$DEBIAN_SCRIPT_DEBUG" ]; then set -v -x; DEBIAN_SCRIPT_TRACE=1; fi
${DEBIAN_SCRIPT_TRACE:+ echo "#42#DEBUG# RUNNING $0 $*" 1>&2 }
mysql_cfgdir=/etc/mysql
DATADIR=/var/lib/mysql
MYADMIN="/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf"
MYSQL_UPGRADE_INFO_FILE="$DATADIR/mysql_upgrade_info"
MARIADB_UPGRADE_INFO_FILE="$DATADIR/mariadb_upgrade_info"
# To avoid having hardcoded paths in the script, we do a search on the path, as suggested at:
# https://www.debian.org/doc/manuals/developers-reference/ch06.en.html#bpp-debian-maint-scripts
pathfind() {
OLDIFS="$IFS"
IFS=:
for p in $PATH; do
if [ -x "$p/$*" ]; then
IFS="$OLDIFS"
return 0
fi
done
IFS="$OLDIFS"
return 1
}
# Try to stop the server in a sane way. If it does not success let the admin
# do it himself. No database directories should be removed while the server
# is running!
stop_server() {
set +e
if pathfind invoke-rc.d; then
invoke-rc.d mysql stop
else
/etc/init.d/mysql stop
fi
errno=$?
set -e
if [ "$?" != 0 ]; then
echo "Trying to stop the MySQL server resulted in exitcode $?." 1>&2
echo "Stop it yourself and try again!" 1>&2
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
# New packaging paradigm for my.cnf as of Dec-2014 for sharing mysql
# variants in Ubuntu.
case "$1" in
remove|disappear)
[ -x /usr/share/mysql-common/configure-symlinks ] && /usr/share/mysql-common/configure-symlinks remove mysql "$mysql_cfgdir/mysql.cnf"
;;
esac
# Check if MariaDB database now exists in data directory using upgrade info
found_version="8.0"
mariadb_exists=0
if [[ -f "$MYSQL_UPGRADE_INFO_FILE" ]]; then
found_version=$(<"$MYSQL_UPGRADE_INFO_FILE")
fi
if [[ -f "$MARIADB_UPGRADE_INFO_FILE" ]]; then
found_version=$(<"$MARIADB_UPGRADE_INFO_FILE")
fi
if [[ "$found_version" == *"MariaDB"* ]]; then
mariadb_exists=1
fi
# MariaDB found - notify user
if [ "$mariadb_exists" = 1 ]; then
echo "Found an instance of MariaDB $found_version, files will not be removed automatically." 1>&2
fi
# - When purging, ask if data files should also be removed
if [ "$1" = "purge" ] && [ "$mariadb_exists" = 0 ]; 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 mysql-server-5.7/postrm_remove_databases || true
db_go || true
db_get mysql-server-5.7/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
rm -rf /var/lib/mysql
rm -rf /var/lib/mysql-files
rm -rf /var/lib/mysql-keyring
userdel mysql || true
fi
fi
#DEBHELPER#
exit 0
|
