gke/WARN/2021_006
GKE nodes aren’t reporting conntrack issues.
Product: Google Kubernetes Engine
Rule class: WARN - Something that is possibly wrong
Description
The following string was found in the serial logs:
nf_conntrack: table full. This indicates that the Linux Kernel connection
tracking table is full.
Remediation
See the GKE Troubleshooting guide linked below.
To find the matching log lines, use the following filter in Cloud Logging:
resource.type="gce_instance"
log_id("serialconsole.googleapis.com/serial_port_1_output")
textPayload:"nf_conntrack: table full"