Root Cause Identified: Connection Tracking Table Exhaustion
Primary Issue:
Starting at approximately 19:05:58 UTC, the system experienced a severe netfilter connection tracking table exhaustion, indicated by the kernel message:
nfconntrack: nfconntrack: table full, dropping packet
Key Findings:
- Connection Tracking Limits:
- Maximum connections allowed: 4,096 (
nf_conntrack_max
)
- Current connections (now): 132 (normal level)
- During the incident: T...