From a8c38c3ac5f9d41cd99e7a45c55fcf04c14321c8 Mon Sep 17 00:00:00 2001
From: Fabian Reinartz <fab.reinartz@gmail.com>
Date: Mon, 18 Jan 2016 16:53:37 +0100
Subject: [PATCH] Don't log rule evaluation failure on shutdown

---
 rules/manager.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/rules/manager.go b/rules/manager.go
index 212c9f9e5..d779979b7 100644
--- a/rules/manager.go
+++ b/rules/manager.go
@@ -220,8 +220,12 @@ func (g *Group) eval() {
 
 			vector, err := rule.eval(now, g.opts.QueryEngine)
 			if err != nil {
+				// Canceled queries are intentional termination of queries. This normally
+				// happens on shutdown and thus we skip logging of any errors here.
+				if _, ok := err.(promql.ErrQueryCanceled); !ok {
+					log.Warnf("Error while evaluating rule %q: %s", rule, err)
+				}
 				evalFailures.Inc()
-				log.Warnf("Error while evaluating rule %q: %s", rule, err)
 			}
 			var rtyp ruleType