Tag: Timeout

Detects high-severity failures in self-hosted PostgreSQL high-availability clusters managed by Patroni, Zalando, or similar HA controllers.This rule targets catastrophic conditions that break replication or cluster consensus:

• WAL streaming failures due to missing replication slots (usually after disk full or crash events)
• Persistent errors resolving HA controller endpoints (etcd/consul) and loss of HA controller quorum
• Disk saturation leading to WAL write errors and replication breakage

In OpenStack deployments using Neutron with the OVN ML2 driver, ports could be bound to agents that were not alive. This behavior led to virtual machines experiencing network interface plug timeouts during provisioning, as the port binding would not complete successfully.

The OpenTelemetry Collector may intermittently fail to export telemetry data when the backend API is unavailable or overloaded. These failures manifest as timeouts (`context deadline exceeded`) or transient HTTP 502 responses. While retry logic is typically enabled, repeated failures can introduce delay or backpressure.

NGINX reports an upstream timeout error when it cannot establish or maintain a connection to backend services within the configured timeout threshold. This occurs when backend services are unresponsive, overloaded, or when the timeout values are set too low for normal operation conditions.The error indicates that NGINX attempted to proxy a request to an upstream server, but the connection or read operation timed out before completion.

Detects high-severity MongoDB replica set primary election failures that result in no primary node being available,causing complete service unavailability. This rule targets catastrophic conditions that break replica set consensus:

• Primary node failures followed by election timeouts where no secondary can become primary
• Network partitions isolating replica set members and preventing quorum formation
• Heartbeat failures and connectivity issues leading to election failures
• Replica set state transitions indicating election problems