March 2020
Intermediate to advanced
626 pages
14h 45m
English
Content preview from Mastering Service Mesh
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Trace sampling
When we installed Istio using a demo profile, the sampling rate was set to 100%.
- Let's confirm this:
# kubectl -n istio-system get deploy istio-pilot -o yaml | grep "name: PILOT_TRACE_SAMPLING" -A1 - name: PILOT_TRACE_SAMPLING value: "100"
When we access the productpage,
we will see a corresponding trace in the dashboard. The 100% sample is OK for a test or low traffic environment. For performance reasons, we can lower the sampling rate in a high traffic mesh by editing the istio-pilot deployment to change the value of PILOT_TRACING_SAMPLING to a lower number, say, 1%.
- As an example, let's modify the sampling rate to 99%:
$ kubectl -n istio-system patch deployment istio-pilot --type json -p '[{"op": "replace","path": "/spec/template/spec/containers/0/env/4/value","value": ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.