You need to configure Solr to use a "truststore" that contains the certificate you want it to trust. With a solr cloud setup, that usually involves configuring the "keystore" and the "truststore" to both contain the same keys...
https://lucene.apache.org/solr/guide/6_6/enabling-ssl.html : Date: Sat, 21 Apr 2018 14:40:08 -0700 (MST) : From: kway <kelly.r...@rackspace.com> : Reply-To: solr-user@lucene.apache.org : To: solr-user@lucene.apache.org : Subject: Re: Solr 6.6.2 Master/Slave SSL Replication Error : : ... looking at this line, I am wondering if this is an issue because I am : using a Self-Signed Certificate: : : Caused by: javax.net.ssl.SSLHandshakeException: : sun.security.validator.ValidatorException: PKIX path building failed: : sun.security.provider.certpath.SunCertPathBuilderException: unable to find : valid certification path to requested target : : How would I get this to work with a self-signed cert? : : Regards, : : Kelly : : : : -- : Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html : -Hoss http://www.lucidworks.com/