This is especially upsetting in an OpenStack and server environment where external DNS is being used to reach/resolve API endpoints and other systems such as database servers. A small outage to DNS becomes a potentially unbounded outage when the SERVFAIL responses are cached indefinitely, requiring manual intervention on each host in addition to fixing the cause of the SERVFAIL.
** Tags added: canonical-bootstack -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1668771 Title: systemd-resolved negative caching for extended period of time To manage notifications about this bug go to: https://bugs.launchpad.net/systemd/+bug/1668771/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
