tailscale.node.health.messages

Health warning count

Dimensions:None

Available on:

Prometheus (1)

Summary

Current number of active health warning messages reported by this Tailscale node. Health messages indicate configuration problems, connectivity issues, or operational degradation. Non-zero values require investigation as they signal degraded operational state, while increasing counts indicate accumulating problems. Essential for proactive issue detection before complete failures occur.

Interface Metrics (1)

Prometheus

tailscale_health_messages

Number of active health warning messages for this Tailscale node

Dimensions:None

Sources

tailscale_health_messagesgithub.com

Technical Annotations (28)

Configuration Parameters (2)

tailscale.web.portrecommended: 5252

required ACL port for remote metrics collection over tailnet

versionrecommended: pre-1.90.6 or later patch release

Version 1.90.6 appears to introduce the unresponsive daemon issue

Error Signatures (3)

DNS failure for ts.net hostnamelog pattern

Tailscale could not connect to the 'Seattle' relay server. Your Internet connection might be down, or the server might be temporarily unavailable.

log pattern

magicsock: ReSTUN("derp-map-update") ignored; stopped, no private keylog pattern

CLI Commands (9)

tailscale status --json | jq '.BackendState, .Self.DNSName, .Self.Online'diagnostic

sudo journalctl -u tailscaled -n 50 --no-pagerdiagnostic

tailscale metrics printdiagnostic

tailscale metrics writemonitoring

curl 100.100.100.100/metricsdiagnostic

tailscale webmonitoring

tailscale statusdiagnostic

tailscale netcheckdiagnostic

tailscale bugreportdiagnostic

Technical References (14)

subnet routerscomponentexit nodescomponentapp connectorscomponenttailscaledcomponentBackendStateconcept100.100.100.100componenttextfile collectorcomponentts.netcomponentTailscale daemoncomponentcoordination servercomponentDERP mapconceptDERP relay servercomponentmagicsockcomponenttailnet profileconcept

Related Insights (8)

Node health issues indicate connectivity or configuration problemswarning

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Tailscaled daemon not running or in error state prevents all connectivitycritical

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Subnet router health monitoring requires metrics collection setupinfo

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Health messages indicate client connectivity or configuration issueswarning

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Tailscale daemon becomes unresponsive requiring restart after upgrade to 1.90.6critical

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Coordination server downtime prevents new DERP server discovery but retains cached mapwarning

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Tailnet profile switch causes DERP relay connection failure and stalled connectionwarning

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Node health warnings indicating degraded operational statewarning

When tailscale.node.health.messages reports warnings, the node is experiencing operational issues that may not cause immediate failure but indicate degraded state. These warnings can include DNS resolution problems, firewall traversal issues, or coordination server connectivity problems.

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