Tag: READONLY

Errors when writing to a read-only Redis replica.

ID	Title	Description	Category	Technology	Tags
CRE-2025-0072 Critical Impact: 10/10 Mitigation: 7/10	Redis Out-Of-Memory → Persistence Crash → Replica/ACL Write Failures	Detects a cascade of critical Redis failure modes in a single session: - Redis refuses writes when maxmemory is exceeded (OOM). - RDB snapshot (BGSAVE) fails (MISCONF) due to simulated full-disk. - Replica refuses writes (READONLY). - ACL denies a write (NOPERM).	In-Memory Database Problems	redis	Redis Out of Memory Persistence RDB MISCONF READONLY ACL Security
CRE-2025-0081 Critical Impact: 9/10 Mitigation: 8/10	Temporal Server Fails Persistence on Read-Only Database	Detects critical failures where Temporal Server is unable to perform essential database write operations (e.g., starting workflows, recording history, completing tasks) because its underlying SQL database (e.g., PostgreSQL) is in a read-only state. This leads to a halt or severe degradation in workflow processing and can cause cluster instability.	Temporal Server Failure	temporal	Temporal PostgreSQL READONLY
CRE-2025-0178 Critical Impact: 5/10 Mitigation: 9/10	Redis Read-Only Replica Write Attempt Error	Detects attempts to perform write operations on Redis read-only replicas. This error indicates application misconfiguration where clients are incorrectly routing write commands to replica instances instead of the master.	In-Memory Database Problems	redis	Redis READONLY Replica Replication Write Error
CRE-2025-0200 Critical Impact: 10/10 Mitigation: 7/10	Redis Comprehensive Troubleshooting - Multiple Common Issues Detection	Comprehensive detection rule for multiple common Redis troubleshooting scenarios including: 1. Out-of-Memory (OOM) errors when maxmemory limit exceeded 2. Connection timeouts and connectivity issues 3. Authentication failures and permission denials 4. Invalid commands and argument errors 5. Background save (BGSAVE) conflicts and persistence issues 6. Slow query performance problems 7. Read-only replica write attempts 8. Disk persistence failures (MISCONF errors) 9. Client connection limits exceeded 10. Memory pressure and eviction warnings	In-Memory Database Problems	redis	Redis Redis CLI Redis Py Out of Memory Connection Authentication Persistence Performance READONLY MISCONF ACL Public