feat(packetparser): break down parsed packets and conntrack GCed entries by reason#2505
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Signed-off-by: Matthew McKeen <matthew.mckeen@fastly.com>
Signed-off-by: Matthew McKeen <matthew.mckeen@fastly.com>
Signed-off-by: Matthew McKeen <matthew.mckeen@fastly.com>
Signed-off-by: Matthew McKeen <matthew.mckeen@fastly.com>
Signed-off-by: Matthew McKeen <matthew.mckeen@fastly.com>
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Description
When debugging high levels of reported packets and drop events, it's useful to see the reasons why they were reported in order to properly tune sampling and other tunables.
It is the same for entries in the conntrack table that are GCed, the state the connection was in when GCed helps to tune for missed metrics.
Add a
reasonlabel to the current metrics to keep track of this.Also adds visibility into conntrack bytes and connections missing a known direction (
is_reply), useful to validate conntrack accuracy.Related Issue
#1760
Checklist
git commit -S -s ...). See this documentation on signing commits.Screenshots (if applicable) or Testing Completed
Deployed in cluster, metrics show reasonable debugging into parsed packets.
Additional Notes
Along the way I found a bug where we never report the final packet during graceful TCP connection teardown, fix that as well.
Please refer to the CONTRIBUTING.md file for more information on how to contribute to this project.