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https://issues.apache.org/jira/browse/HDFS-12027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16065223#comment-16065223
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Rushabh S Shah commented on HDFS-12027:
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I too am getting the CNF exception {{java.lang.ClassNotFoundException}}
{noformat}
SEVERE: Servlet.service() for servlet jmx-servlet threw exception
java.lang.ClassNotFoundException: org.mortbay.jetty.Handler
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1698)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1544)
at org.apache.hadoop.jmx.JMXJsonServlet.doGet(JMXJsonServlet.java:174)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.hadoop.crypto.key.kms.server.KMSMDCFilter.doFilter(KMSMDCFilter.java:84)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:636)
at
org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationFilter.doFilter(DelegationTokenAuthenticationFilter.java:294)
at
org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:588)
at
org.apache.hadoop.crypto.key.kms.server.KMSAuthenticationFilter.doFilter(KMSAuthenticationFilter.java:129)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:610)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:503)
at java.lang.Thread.run(Thread.java:745)
{noformat}
> Add KMS API to get service version and health check
> ---------------------------------------------------
>
> Key: HDFS-12027
> URL: https://issues.apache.org/jira/browse/HDFS-12027
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: kms
> Reporter: patrick white
> Priority: Minor
>
> Enhancement request, add an API to the Key Management Server which can be
> used for health monitoring as well as programatic version checks, such as to
> return the service version identifier, suggest this;
> GET http://HOST:PORT/kms/v1/key/kms_version
> This API would be useful for production monitoring tools to quickly do KMS
> instance reporting (dashboards) and basic health checks, as part of overall
> monitoring of a Hadoop stack installation.
> Such an API would also be useful for debugging initial bring-up of a service
> instance, such as validation of the KMS webserver and its interaction with ZK
> before the key manager(s) are necessarily working. Currently i believe a
> valid key needs to be setup and available before calls can return success.
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