gce/Vm Serial Logs Check

Searches for predefined good or bad patterns in the serial logs of a GCE VM.

Product: Compute Engine
Step Type: AUTOMATED STEP

Description

This diagnostic step checks the VM’s serial logs for patterns that are indicative of successful operations (‘GOOD_PATTERN’) or potential issues (‘BAD_PATTERN’). Based on the presence of these patterns, the step categorizes the VM’s status as ‘OK’, ‘Failed’, or ‘Uncertain’.

Failure Reason

Anomalies detected in the serial logs which align with the investigated bad patterns

Failure Remediation

Investigate potential issues through the serial console. If GRUB_TIMEOUT is greater than 0, access the interactive session for more insights. Explore rescue options for inaccessible VMs or review possible guest OS issues,

If escalating Guest OS related issues to Google Cloud Support do check to ensure is in line with GCP’s Guest OS support policy

Success Reason

The VM’s Linux OS shows no signs of interested anomalies, indicating a likely stable operational state.

Uncertain Reason

Lack of serial log data prevented a thorough assessment of the VM’s operational state. Result is inconclusive

Uncertain Remediation

Confirm the VM’s operational status by reviewing available serial logs. Address any detected guest OS issues using the provided documentation, keeping in mind certain guest OS faults may be beyond GCP’s support scope.