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PASSEDcache / dns_failure
Redis 7.2 DNS Resolution Failing — Cannot Resolve Dependencies on Ubuntu 22.04 LTS
Redis 7.2 cannot resolve DNS names for its dependencies. All outbound connections failing with ENOTFOUND.
Pattern
DNS_FAILURE
Severity
HIGH
Confidence
68%
Remediation
Auto-Heal
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | DNS_FAILURE | DNS_FAILURE | |
| Severity Assessment | HIGH | HIGH | |
| Incident Correlation | N/A | None | |
| Cascade Escalation | N/A | No | |
| Remediation | — | Auto-Heal — Corax resolves autonomously |
Scenario Conditions
Ubuntu 22.04 LTS. Redis 7.2 DNS resolver unreachable or returning SERVFAIL. /etc/resolv.conf pointing to unreachable nameserver. All DNS-dependent operations failing.
Injected Error Messages (1)
Redis 7.2 on Ubuntu 22.04 LTS — ENOTFOUND, dns resolution failed for all dependencies, nameserver unreachable, all outbound connections failing, redis-server cannot resolve hostnames
Neural Engine Root Cause Analysis
DNS resolution failed — domain may be misconfigured or DNS propagation is pending.
Remediation Plan
Verify DNS records are correct. Check domain registrar and nameserver configuration.
Tested: 2026-04-02Monitors: 1 | Incidents: 1Test ID: cmnhnvmsh01uwlijg8dpce6rh