check_dns 270 B

123456789
  1. check_dns
  2. [normal]
  3. 127.0.0.1
  4. DNS ok - +[\.0-9]+ seconds response time, Address\(es\) is\/are 127\.0\.0\.1
  5. [critical]
  6. $nullhost
  7. DNS (problem - Probably a non-existent host/domain|CRITICAL - Non-existent host/domain|CRITICAL - Connection timed out after [0-9]+ seconds)