Hi,
I am running into errors installing plugins on a new Jenkins installation on Linux. # cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.9 (Maipo) I followed the instructions here: https://www.jenkins.io/doc/book/installing/linux/#red-hat-centos to install Jenkins. Here is the error: java.security.cert.CertificateException: No subject alternative DNS name matching updates.jenkins.io found. at java.base/sun.security.util.HostnameChecker.matchDNS(HostnameChecker.java:207) at java.base/sun.security.util.HostnameChecker.match(HostnameChecker.java:98) at java.base/sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:459) at java.base/sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:434) at java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:233) at java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:129) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1313) Caused: javax.net.ssl.SSLHandshakeException: No subject alternative DNS name matching updates.jenkins.io found. at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:128) at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:321) at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:264) at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:259) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1329) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.onConsumeCertificate(CertificateMessage.java:1204) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.consume(CertificateMessage.java:1151) at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392) at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:444) at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:421) at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:178) at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:164) at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1152) at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1063) at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:402) at java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:567) at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1581) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1509) at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:245) at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1291) Caused: java.io.IOException: Failed to load https://updates.jenkins.io/download/plugins/git/4.11.4/git.hpi to /var/lib/jenkins/plugins/git.jpi.tmp at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1302) Caused: java.io.IOException: Failed to download from https://updates.jenkins.io/download/plugins/git/4.11.4/git.hpi at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1336) at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:1893) at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:2205) at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1867) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:121) at java.base/java.lang.Thread.run(Thread.java:834) Can someone please let me know how to resolve the issue. Regards, Sunil -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/CAJ-nt3Cx9-oJzcR%2BJ0GAwBDOeqaYupWUdsdw3SXLsOCiWv9DgA%40mail.gmail.com.
