From a477dd629e3984e310f77570ea22fb81736193a9 Mon Sep 17 00:00:00 2001
From: Wolf Vogel <wolf.vogel@me.com>
Date: Sat, 2 Mar 2024 09:07:03 +0100
Subject: [PATCH] Fix pdns_rel to always have correct output

Fix the condition to not return any values when there were no queries to the server since the last call. Return a 0 as cache hit rate in that case.
---
 plugins/pdns/pdns_rel | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/pdns/pdns_rel b/plugins/pdns/pdns_rel
index b42439d8..28e5a1d2 100755
--- a/plugins/pdns/pdns_rel
+++ b/plugins/pdns/pdns_rel
@@ -49,6 +49,8 @@ if [ -f "$state_file" ] && [ "$(stat --format=%Y "$state_file")" -gt "$(date --d
         d_queries=$((queries - old_queries))
         if [ $d_queries -gt 0 ] ; then
            echo packetcache_hitrate.value $(( d_hits * 100 / d_queries ))
+        else
+           echo packetcache_hitrate.value 0
         fi
 fi