Tag: DNS
Problems related to DNS, such as hostname resolution failures, or DNS server misconfigurations
| ID | Title | Description | Category | Technology | Tags |
|---|---|---|---|---|---|
| prequel-2025-0076 Medium Impact: 6/10 Mitigation: 4/10 | NATS Route Error caused by DNS Resolution Failure | A NATS server establishes a TCP route, logs **“Route connection created”**, but within milliseconds DNS resolution for its peer fails; the server reports ``` Error trying to connect to route [nats://cluster-b:6222]: lookup for host cluster-b no such host ``` and immediately closes the socket. When this sequence happens repeatedly the cluster oscillates between **full mesh** and **partitioned** states, leading to intermittent publish / subscribe errors and duplicate message deliveries. | NATS Problems | nats | NATSDNS |