kafka connection_error ai_generated true

UnknownHostException: broker DNS lookup failed

ID: kafka/client-dns-lookup-failure

Also available as: JSON · Markdown
82%Fix Rate
86%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3 active — — —

Root Cause

Cannot resolve broker hostname.

generic

Workarounds

  1. 90% success Verify DNS resolution for all brokers in bootstrap.servers
  2. 88% success Set client.dns.lookup=use_all_dns_ips for multi-IP resolution

Dead Ends

Common approaches that don't work:

  1. Use /etc/hosts for all brokers 72% fail

    Not scalable

  2. Hardcode IP in bootstrap.servers 78% fail

    Breaks on IP change