From 57a1eae62a94f55414f3c47d3bacb88f3c2a4732 Mon Sep 17 00:00:00 2001
From: Kevin Hellemun <17928966+OGKevin@users.noreply.github.com>
Date: Wed, 5 Feb 2020 14:38:59 +0100
Subject: [PATCH] Register thanos_alert_sender_errors_total metric. (#2101)

* Register thanos_alert_sender_errors_total metric.

https://github.com/thanos-io/thanos/issues/2100
Fixes #2100

Signed-off-by: Kevin Hellemun <17928966+OGKevin@users.noreply.github.com>

* Updated CHANGELOG.

Signed-off-by: Kevin Hellemun <17928966+OGKevin@users.noreply.github.com>
---
 CHANGELOG.md       | 1 +
 pkg/alert/alert.go | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index dee286e74c..2f7a8d9066 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ We use *breaking* word for marking changes that are not backward compatible (rel
 - [#2033](https://github.com/thanos-io/thanos/pull/2033) minio-go: Fixed Issue #1494 support Web Identity providers for IAM credentials for AWS EKS
 - [#1985](https://github.com/thanos-io/thanos/pull/1985) store gateway: Fixed case where series entry is larger than 64KB in index.
 - [#2051](https://github.com/thanos-io/thanos/pull/2051) ruler: Fixed issue where ruler does not expose shipper metrics.
+- [#2101](https://github.com/thanos-io/thanos/pull/2101) ruler: Fixed bug where thanos_alert_sender_errors_total was not registered.
 
 ### Added
 
diff --git a/pkg/alert/alert.go b/pkg/alert/alert.go
index 7cb11a75bd..418cb5c831 100644
--- a/pkg/alert/alert.go
+++ b/pkg/alert/alert.go
@@ -313,7 +313,7 @@ func NewSender(
 		}, []string{"alertmanager"}),
 	}
 	if reg != nil {
-		reg.MustRegister(s.sent, s.dropped, s.latency)
+		reg.MustRegister(s.sent, s.errs, s.dropped, s.latency)
 	}
 	return s
 }