From 321b0779d562400cc31c0ebd7fdb2f202c405fa5 Mon Sep 17 00:00:00 2001
From: Chelsea Holland Komlo <me@chelseakomlo.com>
Date: Mon, 7 May 2018 16:02:51 -0400
Subject: [PATCH] only write error log line on error

---
 command/agent/retry_join.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/command/agent/retry_join.go b/command/agent/retry_join.go
index 328c91cc215..1a0aea8581d 100644
--- a/command/agent/retry_join.go
+++ b/command/agent/retry_join.go
@@ -86,8 +86,10 @@ func (r *retryJoiner) RetryJoin(config *Config) {
 			return
 		}
 
-		r.logger.Printf("[WARN] agent: Join failed: %v, retrying in %v", err,
-			config.Server.RetryInterval)
+		if err != nil {
+			r.logger.Printf("[WARN] agent: Join failed: %v, retrying in %v", err,
+				config.Server.RetryInterval)
+		}
 		time.Sleep(config.Server.retryInterval)
 	}
 }