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On Mon, Feb 9, 2026 at 7:22 PM Heitor Peralles <[email protected]> wrote: > Please remove me from this list > > *Heitor G. Peralles* > *Direct**:* +55 21 979 661 187 <https://wa.me/5521979661187> > *Email:* [email protected] > *LinkedIn:* linkedin.com/in/heitorperalles > <https://www.linkedin.com/in/heitorperalles/> > > On Mon, Feb 9, 2026, 20:50 Oakley, Craig (NIH/NLM/NCBI) [C] via users < > [email protected]> wrote: > > > We noticed that KerberosPlugin.class is found in > > solr-8.11.1/dist/solr-core-8.11.1.jar and in > > solr-8.11.1/server/solr-webapp/webapp/WEB-INF/lib/solr-core-8.11.1.jar > > > > Is there any clarification where to find it in Solr9.2? > > > > -----Original Message----- > > From: Oakley, Craig (NIH/NLM/NCBI) [C] via users <[email protected]> > > Sent: Friday, February 6, 2026 11:15 AM > > To: [email protected] > > Cc: Oakley, Craig (NIH/NLM/NCBI) [C] <[email protected]> > > Subject: [EXTERNAL] Where to find KerberosPlugin in Solr 9.2 > > > > I am trying to get Kerberos to work with Solr 9.2 > > > > After following the instructions of > > > https://solr.apache.org/guide/solr/9_2/deployment-guide/kerberos-authentication-plugin.html > > the instance was not restarting, complaining > > "org.apache.solr.common.SolrException: Error loading class > > 'solr.KerberosPlugin'" and "ClassNotFoundException: > solr.KerberosPlugin": I > > searched under solr-9.2.1/modules for files which sounded as though they > > might relate to Kerberos, and so added hadoop_auth to SOLR_MODULES: that > > allows Solr to run without errors, but it does not allow me to do > anything > > (complaining "GSSException: Failure unspecified at GSS-API level > (Mechanism > > level: Invalid argument (400) - Cannot find key of appropriate type to > > decrypt AP-REQ - AES256 CTS mode with HMAC SHA1-96)"; I then noticed a > > separate section of the documentation for Hadoop Authentication with a > > different security.json (and no requirements for specifying JAAS config > > files nor keytab files): I tried that security.json (with & without JAAS > > config files and/or keytab files), but continue to get similar > GSSException > > errors. > > > > Running "jar tvf" for all the jar files under all of solr-9.2.1, nothing > > seems to have solr.KerberosPlugin; I don't know whether finding a > solution > > to this SolrException would solve the problem (without Hadoop) or if you > > may have other suggestions > > > > Craig Oakley > > Contract Worker (Other) > > National Library of Medicine > > National Institutes of Health > > Building 45, room 6AS37D-57 > > 301-496-6175 > > [email protected]<mailto:[email protected]> > > > > CAUTION: This email originated from outside of the organization. Do not > > click links or open attachments unless you recognize the sender and are > > confident the content is safe. > > > > > -- http://www.needhamsoftware.com (work) https://a.co/d/b2sZLD9 (my fantasy fiction book)
