Jaeger Cassandra Schema Not Initialized
Jaeger cannot store spans when Cassandra schema is not created.
Category archive
Monitoring fixes
Published troubleshooting guides for monitoring issues.
Lightstep Satellite Connection Failed
Lightstep satellite cannot forward spans when collector is unreachable.
Honeycomb Dataset Write Key Invalid
Honeycomb events are rejected when write key does not match dataset.
OpenSearch Security Plugin Auth Failed
OpenSearch security plugin authentication fails when internal user is locked.
OpenSearch ISM Policy Not Rolling
OpenSearch ISM policies do not roll over indices when conditions are not met.
OpenSearch Dashboards Not Connecting
OpenSearch Dashboards cannot connect to OpenSearch when URL or auth is wrong.
OpenSearch Cluster Health Red
OpenSearch cluster health is red when primary shards are unassigned.
Splunk Search Head Captain Stepped Down
Splunk SHC captain steps down when quorum is lost.
Splunk Indexer Cluster Peers Down
Splunk indexer cluster has peers down when replication factor cannot be maintained.
Splunk Universal Forwarder Disconnected
Splunk forwarder is disconnected when deployment server is unavailable.
Dynatrace OneAgent Not Monitoring
Dynatrace OneAgent does not monitor processes when technology is not supported.
New Relic APM Agent Disconnected
New Relic APM agent disconnects when collector endpoint is unreachable.
New Relic Infrastructure Agent Offline
New Relic infrastructure agent is offline when license key is invalid.
Datadog APM Trace Sample Rate Wrong
Datadog trace sampling rate drops too many spans when rate is set too low.
Datadog Integration Config Invalid
Datadog integrations fail when check configuration YAML is invalid.
Datadog Agent Log Collection Failed
Datadog agent does not collect logs when container paths are not mounted.
Datadog Agent Trace APM Disabled
Datadog APM does not receive traces when apm_config.enabled is false.
Vector Source Bind Address In Use
Vector cannot bind to port when another process is already listening.
Vector Transform Drop Failed
Vector transform conditions fail when VRL expressions have syntax errors.
Vector Sink Not Flushing
Vector sinks do not flush events when batch configuration is too large or timeout is too long.
Chrony NTP Desync
Chrony time synchronization fails when NTP servers are unreachable or offset is too large.
Telegraf Secret Store Unavailable
Telegraf cannot access secrets when secret store plugin is not initialized.
Telegraf Processor Order Wrong
Telegraf processors apply in wrong order when plugin execution order is misconfigured.
Telegraf Output Plugin Buffer Full
Telegraf drops metrics when output buffer is full and retry limit is exceeded.
Telegraf Input Plugin Failed
Telegraf input plugins fail to collect metrics when target service is unreachable.
InfluxDB Write Precision Mismatch
InfluxDB writes fail when timestamp precision does not match bucket configuration.
InfluxDB Bucket Organization Wrong
InfluxDB bucket operations fail when organization ID does not match.
InfluxDB Auth Token Expired
InfluxDB API requests fail when authentication token has expired.
InfluxDB Flux Query Timeout
InfluxDB Flux queries timeout when query complexity exceeds executor limits.
InfluxDB Continuous Query Not Running
InfluxDB continuous queries do not run when service is overloaded or syntax is wrong.
InfluxDB Shard Group Expiration Failed
InfluxDB cannot expire old shard groups when retention enforcement is disabled.
InfluxDB WAL Corrupted
InfluxDB write-ahead log is corrupted after power failure causing startup failure.
Grafana Plugin Catalog Unavailable
Grafana cannot install plugins when grafana.com is unreachable or signature is invalid.
Grafana OAuth Login Disabled
Grafana OAuth login is disabled when provider configuration is invalid.
Grafana LDAP Auth Failed
Grafana LDAP authentication fails when server connection or user search is misconfigured.
Grafana Organization Quota Exceeded
Grafana org cannot create dashboards when dashboard quota limit is reached.
Grafana Tempo Trace Ingestion Failed
Grafana Tempo does not receive traces when OTLP endpoint is misconfigured.
Grafana Loki Log Ingestion Failed
Grafana Loki does not ingest logs when Promtail is not shipping or labels are invalid.
Grafana Alerting Evaluation Failed
Grafana alert rules fail to evaluate when datasource returns invalid data.
Grafana Dashboard Not Rendering
Grafana dashboards do not render when panel queries return errors or timeouts.
Prometheus Exporter Not Exposing Metrics
Prometheus exporters do not expose metrics when target application is unhealthy.
Prometheus Grafana Datasource Unavailable
Grafana cannot query Prometheus datasource when URL or authentication is misconfigured.
Prometheus Thanos Sidecar Upload Failed
Prometheus Thanos sidecar cannot upload blocks to object storage when credentials are wrong.
Prometheus Remote Write Queue Full
Prometheus remote write samples are dropped when queue is full and backoff fails.
Prometheus Federation Slow
Prometheus federation scrapes timeout when upstream has too many metrics.
Prometheus Service Discovery Not Updating
Prometheus service discovery does not update targets when Kubernetes API is unreachable.
Prometheus Rules Evaluation Failed
Prometheus recording or alerting rules fail when PromQL expressions are invalid.
Prometheus Alertmanager Not Sending
Prometheus Alertmanager does not send notifications when receiver configuration is wrong.
Prometheus TSDB Head Chunks Persist Failed
Prometheus cannot persist data when disk is full or write permissions are denied.
Prometheus Scrape Target Down
Prometheus cannot scrape metrics when target endpoint is unreachable or authentication fails.