Technologies/CoreDNS/coredns_forward_healthcheck_broken_count
CoreDNSCoreDNSMetric

coredns_forward_healthcheck_broken_count

[OpenMetrics V2] counter of when all upstreams are unhealthy
Dimensions:None
Available on:DatadogDatadog (1)
Interface Metrics (1)
DatadogDatadog
[OpenMetrics V2] counter of when all upstreams are unhealthy
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.