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DNS

This check performs queries to a DNS server to obtain the required information.

Example 
apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: dns-check
spec:
  interval: 30
  dns:
    - server: 8.8.8.8
      port: 53
      query: "1.2.3.4.nip.io"
      querytype: "A"
      minrecords: 1
      exactreply: ["1.2.3.4"]
      timeout: 10
      thresholdMillis: 1000
    - server: 8.8.8.8
      port: 53
      query: "8.8.8.8"
      querytype: "PTR"
      minrecords: 1
      exactreply: ["dns.google."]
      timeout: 10
      thresholdMillis: 100
    - server: 8.8.8.8
      port: 53
      query: "dns.google"
      querytype: "CNAME"
      minrecords: 1
      exactreply: ["dns.google."]
      timeout: 10
      thresholdMillis: 1000
    - server: 8.8.8.8
      port: 53
      query: "flanksource.com"
      querytype: "MX"
      minrecords: 1
      exactreply:
        - "aspmx.l.google.com. 1"
        - "alt1.aspmx.l.google.com. 5"
        - "alt2.aspmx.l.google.com. 5"
        - "aspmx3.googlemail.com. 10"
        - "aspmx2.googlemail.com. 10"
      timeout: 10
      thresholdMillis: 1000
    - server: 8.8.8.8
      port: 53
      query: "flanksource.com"
      querytype: "TXT"
      minrecords: 1
      exactreply: ["google-site-verification=IIE1aJuvqseLUKSXSIhu2O2lgdU_d8csfJjjIQVc-q0"]
      timeout: 10
      thresholdMillis: 1000
    - server: 8.8.8.8
      port: 53
      query: "flanksource.com"
      querytype: "NS"
      minrecords: 1
      exactreply:
        - "ns-91.awsdns-11.com."
        - "ns-908.awsdns-49.net."
        - "ns-1450.awsdns-53.org."
        - "ns-1896.awsdns-45.co.uk."
      timeout: 10
      thresholdMillis: 1000
  #  - server: 8.8.8.8
  #    port: 53
  #    querytype: "SRV"
  #    query: "_test._tcp.test"
  #    timeout: 10
  #    srvReply:
  #      target: ""
  #      port: 0
  #      priority: 0
  #      weight: 0*
Field Description Scheme Required
description Description for the check string
exactreply Expected exact match result(s) []string
server Address of DNS server to query string Yes
icon Icon for overwriting default icon on the dashboard string
minrecords Minimum records int
name Name of the check string
port Port to query DNS server on int Yes
query Domain name to lookup string
querytype Record type to query string Yes
thresholdMillis Threshold response time from DNS server int Yes
timeout Maximum timeout for DNS query int Yes