linkerd / linkerd/linkerd2

Update the proxy injector MWC to include reinvocationPolicy

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help wanted
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Go
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Description

K8s 1.15 introduces the reinvocationPolicy in the MWC and VWC allowing the webhook to be re-evaluated during a single admission request. This will ensure defaults defined by certain admission controllers like PodSecurityPolicy and LimitRanger are automatically added to the Linkerd proxy and proxy-init containers.

We should update the MWC template to include this property with the value IfNeeded, so that K8s 1.15+ users can take advantage of it.

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the MWC template and reviewing how the MWC and VWC are represented. Add reinvocationPolicy with the value IfNeeded to the MWC, then verify that the rendered webhook configuration contains the property for Kubernetes 1.15+ users.

Written by the indexing model from the issue text.

Assessment

Tech stack
kubernetes
Domain
infrastructure
Issue type
Feature
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
50/100

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