EDR: Services Fail to Start on Solr (NoClassDefFoundError)

[#1]

Environment

• EDR: All Versions

Symptoms

Services fail to start. 
Solr debug logs shows this error

2021-05-10 20:09:26,813 - [ERROR] - from org.apache.solr.core.SolrCore in main []
null:java.lang.NoClassDefFoundError: Could not initialize class com.carbonblack.cbfs.solr.CbContext
        at com.carbonblack.cbfs.solr.handler.CbHttpShardHandlerFactory.init(CbHttpShardHandlerFactory.java:27)
        at org.apache.solr.handler.component.ShardHandlerFactory.newInstance(ShardHandlerFactory.java:51)
        at org.apache.solr.core.CoreContainer.load(CoreContainer.java:680)
        at org.apache.solr.servlet.SolrDispatchFilter.createCoreContainer(SolrDispatchFilter.java:275)
        at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:184)
        at org.eclipse.jetty.servlet.FilterHolder.initialize(FilterHolder.java:134)
        at org.eclipse.jetty.servlet.ServletHandler.lambda$initialize$0(ServletHandler.java:767)
        at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734)
        at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658)
        at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:791)
        at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:360)
        at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1445)
        at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1409)
        at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:855)
        at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:275)
        at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:524)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72)
        at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:46)
        at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:188)
        at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:513)
        at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:154)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:173)
        at org.eclipse.jetty.deploy.providers.WebAppProvider.fileAdded(WebAppProvider.java:447)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:66)
        at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:784)
        at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:753)
        at org.eclipse.jetty.util.Scanner.scan(Scanner.java:641)
        at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:540)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:146)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72)
        at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:599)
        at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:249)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
        at org.eclipse.jetty.server.Server.start(Server.java:408)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:117)
        at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
        at org.eclipse.jetty.server.Server.doStart(Server.java:372)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72)
        at org.eclipse.jetty.xml.XmlConfiguration.lambda$main$1(XmlConfiguration.java:1929)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1878)
        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 org.eclipse.jetty.start.Main.invokeMain(Main.java:218)
        at org.eclipse.jetty.start.Main.start(Main.java:491)
        at org.eclipse.jetty.start.Main.main(Main.java:77)

 

Cause

Typo in /etc/cb/cb.conf

Resolution

1. Check for the area where the typo is located. It will most likely be a space. 

   cat -A /etc/cb/cb.conf | grep '\s\$'

2. Update the configuration file with the correction
3. Restart services. EDR: How to Restart Server Services