coredns_forward_healthcheck_broken_count
[OpenMetrics V2] counter of when all upstreams are unhealthyDimensions:None
Available on:
Datadog (1)
Interface Metrics (1)
Dimensions:None
Related Insights (1)
Forward Plugin Upstream DNS Failurescritical
CoreDNS cannot reach upstream DNS servers, causing external domain resolution failures while internal cluster DNS continues to work. This indicates network connectivity or upstream DNS server issues.
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