Install ingest-attachment failed Elasticsearch

Hello y’all,

i just installed a new instance of Rocky Linux 8.8 and i followed the instructions to install and set up zammad. The issue I am having, is that after I installed Elasticsearch. When I try to run the “sudo /usr/share/elasticsearch/bin/elasticsearch-plugin install ingest-attachment” command, i get the following error message.

→ Installing ingest-attachment
→ Failed installing ingest-attachment
→ Rolling back ingest-attachment
→ Rolled back ingest-attachment
Exception in thread “main” javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:130)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:378)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:321)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:316)
at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1318)
at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.onConsumeCertificate(CertificateMessage.java:1195)
at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.consume(CertificateMessage.java:1138)
at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:393)
at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:476)
at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:447)
at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:201)
at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:172)
at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1506)
at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1421)
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:455)
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:426)
at java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:586)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:187)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:141)
at org.elasticsearch.plugins.cli.InstallPluginAction.urlExists(InstallPluginAction.java:446)
at org.elasticsearch.plugins.cli.InstallPluginAction.getElasticUrl(InstallPluginAction.java:400)
at org.elasticsearch.plugins.cli.InstallPluginAction.download(InstallPluginAction.java:316)
at org.elasticsearch.plugins.cli.InstallPluginAction.execute(InstallPluginAction.java:242)
at org.elasticsearch.plugins.cli.InstallPluginCommand.execute(InstallPluginCommand.java:88)
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:77)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:112)
at org.elasticsearch.cli.MultiCommand.execute(MultiCommand.java:95)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:112)
at org.elasticsearch.cli.Command.main(Command.java:77)
at org.elasticsearch.plugins.cli.PluginCli.main(PluginCli.java:36)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:388)
at java.base/sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:271)
at java.base/sun.security.validator.Validator.validate(Validator.java:256)
at java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:230)
at java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:132)
at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1302)
… 25 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:148)
at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:129)
at java.base/java.security.cert.CertPathBuilder.build(CertPathBuilder.java:297)
at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:383)
… 30 more

Consider using Elasticsearch 8 over Elasticsearch 7 with this fairly new distribution. Also make sure Rocky Linux 8.8 is actually supported by it. It’s not part of our supported distributions so you’re alone with this third party application I’m afraid.