How can I convert a non-HA KOTS+kURL cluster into an HA one?

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1

How can I convert a non-HA KOTS+kURL cluster into a Highly-Available cluster?

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Re-run the installation script on the master with “ha” specified.

So if the original script was:
curl -sSL https://kurl.sh/supergoodtool | sudo bash

Then add a “-s ha” at the end to make it:
curl -sSL https://kurl.sh/supergoodtool | sudo bash -s ha