This happened after upgrading from 2.338 (which worked fine) to 2.340. Jenkins fails to start with the following log:
SEVERE winstone.Logger#logInternal: Container startup failed
winstone.WinstoneException: Please set --httpsKeyStore
at winstone.AbstractSecuredConnectorFactory.configureSsl(AbstractSecuredConnectorFactory.java:88)
at winstone.Http2ConnectorFactory.start(Http2ConnectorFactory.java:59)
at winstone.Launcher.spawnListener(Launcher.java:255)
Caused: java.io.IOException: Failed to start a listener: winstone.Http2ConnectorFactory
at winstone.Launcher.spawnListener(Launcher.java:261)
at winstone.Launcher.<init>(Launcher.java:191)
at winstone.Launcher.main(Launcher.java:405)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at Main._main(Main.java:304)
at Main.main(Main.java:108)
Dmitry Erastov
added a comment - Could be due to https://github.com/jenkinsci/winstone/releases/tag/winstone-5.23 or https://github.com/jenkinsci/packaging/pull/296?
Yes, Winstone 5.23 (i.e., Jenkins core 2.339 and later) removed the automatic generation of a self signed certificate if TLS is specified (either by httpsPort or http2Port) but no keystore is specified.
In our case we specifically don't want Jenkins to handle HTTPS
HTTP/2 over TLS is de facto mandatory, and Jenkins only supports HTTP/2 over TLS. Previously, Jenkins automatically generated a self signed certificate in such cases. Now, it no longer does.
I believe your options are either to use another web server to serve HTTP/2 (configured with its own certificate) or to use Jenkins/Winstone to serve HTTP/2 with an explicit keystore.
Basil Crow
added a comment - Yes, Winstone 5.23 (i.e., Jenkins core 2.339 and later) removed the automatic generation of a self signed certificate if TLS is specified (either by httpsPort or http2Port ) but no keystore is specified.
In our case we specifically don't want Jenkins to handle HTTPS
HTTP/2 over TLS is de facto mandatory , and Jenkins only supports HTTP/2 over TLS. Previously, Jenkins automatically generated a self signed certificate in such cases. Now, it no longer does.
I believe your options are either to use another web server to serve HTTP/2 (configured with its own certificate) or to use Jenkins/Winstone to serve HTTP/2 with an explicit keystore.
Thanks for the quick response. We disabled http2 in the Jenkins config and instead now fully rely on the web server for that. Version 2.340 now starts without issues!
Dmitry Erastov
added a comment - Thanks for the quick response. We disabled http2 in the Jenkins config and instead now fully rely on the web server for that. Version 2.340 now starts without issues!
As far as the resolution goes, I think the docs at https://www.jenkins.io/doc/book/installing/initial-settings/#using-http2 are a bit unclear about the need to configure https if enabling http2. I'll take a stab at updating them.
Basil Crow
added a comment - Fixed in jenkins-infra/jenkins.io#5021 . Thanks for the PR!
Dmitry Erastov
Dmitry Erastov
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Could be due to https://github.com/jenkinsci/winstone/releases/tag/winstone-5.23 or https://github.com/jenkinsci/packaging/pull/296?