Hello

Using jenkins version 2.226 I wanted today to upgrade it with all his plugins

so i started with the plugins

however, it's not working. lugins update shows red failure with those messages:

sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:145)
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:131)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)
Caused: sun.security.validator.ValidatorException: PKIX path building failed
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)
at sun.security.validator.Validator.validate(Validator.java:260)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1460)
Caused: javax.net.ssl.SSLHandshakeException
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1937)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1478)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:212)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:914)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1050)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1363)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1391)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1375)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:563)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.followRedirect0(HttpURLConnection.java:2661)
at sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2583)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1769)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2942)
at java.net.URLConnection.getHeaderFieldLong(URLConnection.java:629)
at java.net.URLConnection.getContentLengthLong(URLConnection.java:501)
at java.net.URLConnection.getContentLength(URLConnection.java:485)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getContentLength(HttpsURLConnectionImpl.java:398)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1230)
Caused: 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
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1889)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1884)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1883)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1456)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1246)
Caused: java.io.IOException: Failed to load https://updates.jenkins.io/download/plugins/plugin-util-api/1.7.0/plugin-util-api.hpi to /opt/jenkins/builds/plugins/plugin-util-api.jpi.tmp
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1253)
Caused: java.io.IOException: Failed to download from https://updates.jenkins.io/download/plugins/plugin-util-api/1.7.0/plugin-util-api.hpi (redirected to: https://get.jenkins.io/plugins/plugin-util-api/1.7.0/plugin-util-api.hpi)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1287)
at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:1835)
at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:2113)
at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1809)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:111)
at java.lang.Thread.run(Thread.java:745)

I have added https://updates.jenkins.io/ certificate on java keystore, and rebooted, still not working

tried also https://updates.jenkins.io/ or http://updates.jenkins.io/ on options..

I am using java 8

any idea to fix this?

thanks