From a7766d331645226654d5baf92017f5b52d4dc297 Mon Sep 17 00:00:00 2001
From: Steven Hiscocks <steven@hiscocks.me.uk>
Date: Sun, 20 Apr 2014 17:59:41 +0100
Subject: [PATCH] DOC: Add notice message for systemd backend when no journal
 match

---
 fail2ban/server/filtersystemd.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fail2ban/server/filtersystemd.py b/fail2ban/server/filtersystemd.py
index 7ab56039..f2dee8cb 100644
--- a/fail2ban/server/filtersystemd.py
+++ b/fail2ban/server/filtersystemd.py
@@ -213,6 +213,12 @@ class FilterSystemd(JournalFilter): # pragma: systemd no cover
 
 	def run(self):
 
+		if not self.getJournalMatch():
+			logSys.notice(
+				"Jail started without 'journalmatch' set. "
+				"Jail regexs will be checked against all journal entries, "
+				"which is not advised for performance reasons.")
+
 		# Seek to now - findtime in journal
 		start_time = datetime.datetime.now() - \
 				datetime.timedelta(seconds=int(self.getFindTime()))