From 656d092ad652bd296d436229c332da58a5543c3c Mon Sep 17 00:00:00 2001
From: Eugene Bujak <hmage@hmage.net>
Date: Sun, 7 Oct 2018 00:59:21 +0300
Subject: [PATCH] if coredns unexpectedly quits, restart it

---
 control.go | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/control.go b/control.go
index cc902f3a..06adb498 100644
--- a/control.go
+++ b/control.go
@@ -142,9 +142,14 @@ func handleStart(w http.ResponseWriter, r *http.Request) {
 
 func childwaiter() {
 	err := coreDNSCommand.Wait()
-	log.Printf("coredns terminated: %s\n", err)
-	err = coreDNSCommand.Process.Release()
-	log.Printf("coredns released: %s\n", err)
+	log.Printf("coredns unexpectedly died: %s\n", err)
+	coreDNSCommand.Process.Release()
+	log.Printf("restarting coredns\n", err)
+	err = startDNSServer()
+	if err != nil {
+		log.Printf("Couldn't restart DNS server: %s\n", err)
+		return
+	}
 }
 
 func handleStop(w http.ResponseWriter, r *http.Request) {