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If I apply a TLS cert to our workers' distributed TLS settings through the UI (or via console, in instance.yml), one by one, and then apply the cert to the leader, control plane communication will be down for each worker until I finish with the leader. Will other communication (data plane, in particular) be broken during that time, as well? I'd like to know if I should plan for data loss during that period.
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TLS Certificate Application Disrupts Control Plane Communication For Workers Until Leader Is Updated
Best answer by Brandon McCombs
Only if you muck with any certs that the data plane needs on those workers (or for any sources that require leader comms), other than the workers needing to restart to load the new cert that you are mucking with for the leader connection.
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