[keycloak-user] 4.5.0.Final failing to start

Graham Burgess graham.burgess at razer.com
Wed Dec 5 19:47:16 EST 2018 

I am getting the follow stack trace from the logs when 4.5.0.Final tries to start on 2 of my Keycloak cluster (thankfully both non-production):

00:42:40,128 WARN  [org.jboss.modules.define] (main) Failed to define class org.jboss.as.server.BootstrapImpl$ShutdownHook in Module "org.jboss.as.server" version 5.0.0.Final from local module loader @2b95e48b (finder: local module finde
r @4a3329b9 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base)): java.lang.NoClassDefFoundError: Failed to link org/jboss/as/server/BootstrapImpl$Shutdow
nHook (Module "org.jboss.as.server" version 5.0.0.Final from local module loader @2b95e48b (finder: local module finder @4a3329b9 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/
modules/system/layers/base))): datadog/trace/agent/tooling/context/FieldBackedProvider$ContextAccessor$java$lang$Runnable$datadog$trace$bootstrap$instrumentation$java$concurrent$State
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
        at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:423)
        at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:519)
        at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:339)
        at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:126)
        at org.jboss.modules.Module.loadModuleClass(Module.java:731)
        at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:247)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:410)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
        at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
        at org.jboss.as.server.BootstrapImpl.<init>(BootstrapImpl.java:67)
        at org.jboss.as.server.Bootstrap$Factory.newInstance(Bootstrap.java:275)
        at org.jboss.as.server.Main.main(Main.java:105)
        at org.jboss.modules.Module.run(Module.java:352)
        at org.jboss.modules.Module.run(Module.java:320)
        at org.jboss.modules.Main.main(Main.java:593)

java.lang.NoClassDefFoundError: Failed to link org/jboss/as/server/BootstrapImpl$ShutdownHook (Module "org.jboss.as.server" version 5.0.0.Final from local module loader @2b95e48b (finder: local module finder @4a3329b9 (roots: /opt/jboss/
keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base))): datadog/trace/agent/tooling/context/FieldBackedProvider$ContextAccessor$java$lang$Runnable$datadog$trace$bootstrap$ins
trumentation$java$concurrent$State
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
        at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:423)
        at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:519)
        at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:339)
        at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:126)
        at org.jboss.modules.Module.loadModuleClass(Module.java:731)
        at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:247)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:410)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
        at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
        at org.jboss.as.server.BootstrapImpl.<init>(BootstrapImpl.java:67)
        at org.jboss.as.server.Bootstrap$Factory.newInstance(Bootstrap.java:275)
        at org.jboss.as.server.Main.main(Main.java:105)
        at org.jboss.modules.Module.run(Module.java:352)
        at org.jboss.modules.Module.run(Module.java:320)
        at org.jboss.modules.Main.main(Main.java:593)
00:42:40,251 FATAL [org.jboss.as.server] (main) WFLYSRV0239: Aborting with exit code 1

Thankfully my production cluster is up at the moment but I fear that if it restarts (for whatever reason) it too will fail.

Anyone else seen and solve this one?

For the record, I am already looking at upgrading to 4.7.0.Final but that has it's own set of issues that I am currently working through.
Best regards,
Graham Burgess
RΛZΞR|stormmore
Sr. DevOps Engineer (USA)
Email: graham.burgess at razer.com
DID: (415) 374 0639
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