Fresh install of RHEL5.2
yum install openjdk
wget hudson.war
java -jar hudson.war
firefox http://localhost:8080/
Goto plugin management
Set up the proxy settings
Go to list of available plugins
Select any plugin for installation
Click install

get barf:

javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error:
java.security.InvalidAlgorithmParameterException: the trustAnchors parameter
must be non-empty
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1316)
at java.security.AccessController.doPrivileged(Native Method)
at
sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1310)
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:964)
at
sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
at hudson.model.UpdateCenter$InstallationJob.run(UpdateCenter.java:459)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Caused by: javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected
error: java.security.InvalidAlgorithmParameterException: the trustAnchors
parameter must be non-empty
at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1611)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1574)
at sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1557)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1150)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1127)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:423)
at
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:997)
at
sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2072)
at java.net.URLConnection.getHeaderFieldInt(URLConnection.java:596)
at java.net.URLConnection.getContentLength(URLConnection.java:491)
at
sun.net.www.protocol.https.HttpsURLConnectionImpl.getContentLength(HttpsURLConnectionImpl.java:398)
at hudson.model.UpdateCenter$InstallationJob.run(UpdateCenter.java:458)
... 6 more
Caused by: java.lang.RuntimeException: Unexpected error:
java.security.InvalidAlgorithmParameterException: the trustAnchors parameter
must be non-empty
at sun.security.validator.PKIXValidator.(PKIXValidator.java:75)
at sun.security.validator.Validator.getInstance(Validator.java:178)
at
sun.security.ssl.X509TrustManagerImpl.getValidator(X509TrustManagerImpl.java:129)
at
sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:225)
at
sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:270)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:973)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:142)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:533)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:471)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:904)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1116)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1143)
... 15 more
Caused by: java.security.InvalidAlgorithmParameterException: the trustAnchors
parameter must be non-empty
at java.security.cert.PKIXParameters.setTrustAnchors(PKIXParameters.java:200)
at java.security.cert.PKIXParameters.(PKIXParameters.java:120)
at java.security.cert.PKIXBuilderParameters.(PKIXBuilderParameters.java:104)
at sun.security.validator.PKIXValidator.(PKIXValidator.java:73)
... 26 more