On 4/2/23 15:17, Jan Høydahl wrote:
Shawn, the PKI auth that requires these special properties during rolling 
upgrade has nothing with SSL cert auth.

It is needed for Solr’s internal traffic between nodes regardless of SSL. We 
call that PKI auth and it changed formats. So even with basic auth enabled in 
your cluster Solr may decide to use PKI for certain calls between nodes, and 
even search calls in case of a sharper collection.

Interesting. I was not aware that anything like this existed. Is that a SolrCloud feature? Where can I find more info about it?

Thanks,
Shawn

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