From 055e393e12c326ec9fdd99dce0340fb2c3993e44 Mon Sep 17 00:00:00 2001
From: surajnarwade <suraj.narwade@rvu.co.uk>
Date: Tue, 22 Aug 2023 15:15:33 +0100
Subject: [PATCH] fix upstream dns url fix

---
 Dockerfile                             | 2 +-
 config/local-dns-resolver-config.json  | 2 +-
 config/plugin/upstream_dns_resolver.sh | 4 +++-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 1ae850d..f7969fd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.k8s.io/node-problem-detector/node-problem-detector:v0.8.12
+FROM registry.k8s.io/node-problem-detector/node-problem-detector:v0.8.13
 
 RUN set -eux; \
   apt-get update; \
diff --git a/config/local-dns-resolver-config.json b/config/local-dns-resolver-config.json
index 9dfdbff..468c378 100644
--- a/config/local-dns-resolver-config.json
+++ b/config/local-dns-resolver-config.json
@@ -21,7 +21,7 @@
       "reason": "NodeLocalDnsResolutionFailing",
       "path": "./config/plugin/local_dns_resolver.sh",
       "args": [
-        "169.254.20.10"
+        "kube-dns-upstream.kube-system.svc.cluster.local."
       ]
     }
   ]
diff --git a/config/plugin/upstream_dns_resolver.sh b/config/plugin/upstream_dns_resolver.sh
index 301df32..1cd1fdd 100755
--- a/config/plugin/upstream_dns_resolver.sh
+++ b/config/plugin/upstream_dns_resolver.sh
@@ -6,9 +6,11 @@ UNKNOWN=2
 
 readonly fqdn_a_record="$1"
 
+
+
 # We send a single attempt only, without retries and with 1s timeout.
 # We expect to receive an IPv4 address for a given A record.
-dig_cmd_out="$(dig -t A @169.254.20.10 +tries=1 +retry=0 +time=1 +short "${fqdn_a_record}" 2>&1 | head -n1)"
+dig_cmd_out="$(dig -t A @${LOCAL_DNS_RESOLVER_IP} +tries=1 +retry=0 +time=1 +short "${fqdn_a_record}" 2>&1 | head -n1)"
 dig_cmd_return_code="$?"
 dig_cmd_out_ipv4ish="$(echo "${dig_cmd_out}" | grep -E -o "^([0-9]{1,3}[\.]){3}[0-9]{1,3}$")"