Add flag for required searchdomains, and alertrule for missing requir…

…ed searchdomain (#123)
evry-ace · Mar 31, 2021 · a42b4d3 · a42b4d3
1 parent 05a77ed
commit a42b4d3
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Showing 4 changed files with 12 additions and 3 deletions.
diff --git a/node-dns-exporter/Chart.yaml b/node-dns-exporter/Chart.yaml
@@ -15,10 +15,10 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 1.2.0
+version: 1.3.0
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "main-ced69cea"
+appVersion: "main-6fb66400"
diff --git a/node-dns-exporter/templates/alert-rules.yaml b/node-dns-exporter/templates/alert-rules.yaml
@@ -19,6 +19,14 @@ spec:
       for: {{ .Values.alertFor | default "3m" }}
       labels:
         serverity: warning
+    - alert: MissingSearchDomainWarning
+      annotations:
+        message: |-
+          {{`Searchdomain: {{$labels.host}} is not available for node: {{$labels.node}}`}}
+      expr: 'node_dns_searchdomain==0'
+      for: {{ .Values.alertFor | default "3m" }}
+      labels:
+        serverity: warning
 {{- if .Values.customAlertRules }}
 {{ toYaml .Values.customAlertRules | indent 4 }}
 {{- end }}

diff --git a/node-dns-exporter/templates/daemonset.yaml b/node-dns-exporter/templates/daemonset.yaml
@@ -47,6 +47,7 @@ spec:
           args:
             - "--listen-address={{ .Values.nodeDns.listenAddress | default "0.0.0.0:8080" }}"
             - "--test-hosts={{ .Values.nodeDns.testHosts }}"
+            - "--req-searchdomains={{ .Values.nodeDns.requiredSearchdomains }}"
             - "--test-interval-seconds={{ .Values.nodeDns.testInterval | default 120 }}"
             - "--node-name={{ .Values.nodeDns.nodeName | default "$(NODE_NAME)" }}"
           env:

diff --git a/node-dns-exporter/values.yaml b/node-dns-exporter/values.yaml
@@ -70,7 +70,7 @@ metrics:
 
 nodeDns:
   testHosts: "" #"example.com, youtube.com"
-
+  requiredSearchdomains: "" #"localhost, mysearchdomain.com"
   #listenAddress: 0.0.0.0:8080
   #testInterval: 120