Troubleshooting and Debugging for Thanos (https://github.com/thanos-io/thanos)
Techniques and tools for identifying and resolving issues with Thanos.
What is Troubleshooting and Debugging?
Troubleshooting and debugging refer to the processes of identifying and resolving issues in software, such as the Thanos project (https://github.com/thanos-io/thanos). These processes involve various techniques and tools to help developers understand the root cause of errors, analyze logs, and implement fixes.
Why is Troubleshooting and Debugging important?
Effective troubleshooting and debugging are crucial for maintaining the stability and performance of software projects like Thanos. They help developers quickly identify and address issues, ensuring that the system remains functional and reliable for users. Additionally, the insights gained from troubleshooting and debugging can inform future improvements and enhancements to the project.
Insights
Upgrade components
- Upgrade sidecar, ruler, and receive to version 0.13.0+.
Compactor issues
- The compactor may be blocked for some time, but if it is urgent, mitigate by removing overlap or backing up somewhere else. You can rename the block ULID to a non-ULID.
- Determine who uploaded the block by searching for logs with this ULID across all sidecars and rulers. Check access logs to object storage. Check debug/metas or meta.json of the problematic block to see how it looks and what the
sourceis.
Misconfigurations
- Determine what you misconfigured.
Reporting issues
- If all looks sane and you have double-checked everything, post an issue on Github. Bugs can happen, but the team heavily tests against such problems.
Recent fixes
- #7083: Store Gateway: Fix lazy expanded postings with 0 length that failed to be cached.
- #7080: Receive: race condition in handler Close() when stopped early.
For more information, see the MAINTAINERS.md document.
Version
0.35.0-dev
