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rfc: tap-style trace-logging #2705

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siggy opened this issue Apr 16, 2019 · 1 comment
Open

rfc: tap-style trace-logging #2705

siggy opened this issue Apr 16, 2019 · 1 comment
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area/cli area/proxy rfc

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@siggy
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siggy commented Apr 16, 2019

Summary

Trace-level logging in the proxy is useful for debugging. Currently to achieve this, users redeploy the proxy with logging turned up:
#2703 (comment)

Proposal

Introduce a CLI command that provides trace-level information from a specific proxy:

# linkerd trace [flags] (RESOURCE)
linkerd trace po/pod-foo-bar
linkerd trace -n emojivoto deploy/web

This command could follow a similar model to tap, and would complete the linkerd metrics command nicely.
@grampelberg
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Related to #2005.

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@grampelberg @siggy