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csi: retry controller client RPCs on next controller #8561

Merged
merged 1 commit into from
Aug 6, 2020
Merged

csi: retry controller client RPCs on next controller #8561

merged 1 commit into from
Aug 6, 2020

Commits on Jul 30, 2020

  1. csi: retry controller client RPCs on next controller 

    The documentation encourages operators to run multiple controller plugin
instances for HA, but the client RPCs don't take advantage of this by retrying
when the RPC fails in cases when the plugin is unavailable (because the node
has drained or the alloc has failed but we haven't received an updated
fingerprint yet).

This changeset tries all known controllers on ready nodes before giving up,
and adds tests that exercise the client RPC routing and retries.
    @tgross
    tgross committed Jul 30, 2020
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