I was trying to integrate neo4j with elastic-search using https://github.com/neo4j-contrib/neo4j-elasticsearch official docs.
I had placed neo4j-elasticsearch-3.2.3.jar file into /var/lib/neo4j/plugins directory and changed neo4j.conf which was there given in the official docs.But now when i start neo4j.
sudo service neo4j start and if i checksudo service neo4j status.It gives error.
I have cleared and installed neo4j couple of times but the problem still persists.Though there are many other similar looking questions as well closest being Integration of elasticsearch with neo4j database but none of them seems to give a solution.
Here is my /var/log/neo4j/neo4j.log file
Mar 02 10:32:59 nikhil-computer systemd[1]: Started Neo4j Graph Database.
Mar 02 10:32:59 nikhil-computer neo4j[12008]: Active database: graph.db
Mar 02 10:32:59 nikhil-computer neo4j[12008]: Directories in use:
Mar 02 10:32:59 nikhil-computer neo4j[12008]: home: /var/lib/neo4j
Mar 02 10:32:59 nikhil-computer neo4j[12008]: config: /etc/neo4j
Mar 02 10:32:59 nikhil-computer neo4j[12008]: logs: /var/log/neo4j
Mar 02 10:32:59 nikhil-computer neo4j[12008]: plugins: /var/lib/neo4j/plugins
Mar 02 10:32:59 nikhil-computer neo4j[12008]: import: /var/lib/neo4j/import
Mar 02 10:32:59 nikhil-computer neo4j[12008]: data: /var/lib/neo4j/data
Mar 02 10:32:59 nikhil-computer neo4j[12008]: certificates: /var/lib/neo4j/certificates
Mar 02 10:32:59 nikhil-computer neo4j[12008]: run: /var/run/neo4j
Mar 02 10:32:59 nikhil-computer neo4j[12008]: Starting Neo4j.
Mar 02 10:33:00 nikhil-computer neo4j[12008]: 2018-03-02 05:03:00.100+0000 INFO ======== Neo4j 3.3.3 ========
Mar 02 10:33:00 nikhil-computer neo4j[12008]: 2018-03-02 05:03:00.136+0000 INFO Starting...
Mar 02 10:33:00 nikhil-computer neo4j[12008]: 2018-03-02 05:03:00.792+0000 ERROR Failed to start Neo4j: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@48bb62' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.kernel.configuration.Settings.setting(Ljava/lang/String;Ljava/util/function/Function;Ljava/lang/String;)Lorg/neo4j/graphdb/config/BaseSetting;". Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@48bb62' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.kernel.configuration.Settings.setting(Ljava/lang/String;Ljava/util/function/Function;Ljava/lang/String;)Lorg/neo4j/graphdb/config/BaseSetting;".
Mar 02 10:33:00 nikhil-computer neo4j[12008]: org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@48bb62' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.kernel.configuration.Settings.setting(Ljava/lang/String;Ljava/util/function/Function;Ljava/lang/String;)Lorg/neo4j/graphdb/config/BaseSetting;".
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.exception.ServerStartupErrors.translateToServerStartupError(ServerStartupErrors.java:68)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:219)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:111)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:79)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:32)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.server.database.LifecycleManagingDatabase@48bb62' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.kernel.configuration.Settings.setting(Ljava/lang/String;Ljava/util/function/Function;Ljava/lang/String;)Lorg/neo4j/graphdb/config/BaseSetting;".
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:466)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:211)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: ... 3 more
Mar 02 10:33:00 nikhil-computer neo4j[12008]: Caused by: java.lang.RuntimeException: Error starting org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory, /var/lib/neo4j/data/databases/graph.db
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(GraphDatabaseFacadeFactory.java:211)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:126)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.CommunityNeoServer.lambda$static$0(CommunityNeoServer.java:58)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.server.database.LifecycleManagingDatabase.start(LifecycleManagingDatabase.java:88)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:445)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: ... 5 more
Mar 02 10:33:00 nikhil-computer neo4j[12008]: Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.extension.KernelExtensions@5b218417' failed to initialize. Please see the attached cause exception "org.neo4j.kernel.configuration.Settings.setting(Ljava/lang/String;Ljava/util/function/Function;Ljava/lang/String;)Lorg/neo4j/graphdb/config/BaseSetting;".
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.init(LifeSupport.java:427)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.lifecycle.LifeSupport.init(LifeSupport.java:62)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:98)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(GraphDatabaseFacadeFactory.java:207)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: ... 9 more
Mar 02 10:33:00 nikhil-computer neo4j[12008]: Caused by: java.lang.NoSuchMethodError: org.neo4j.kernel.configuration.Settings.setting(Ljava/lang/String;Ljava/util/function/Function;Ljava/lang/String;)Lorg/neo4j/graphdb/config/BaseSetting;
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.elasticsearch.ElasticSearchKernelExtensionFactory$ElasticSearchSettings.<clinit>(ElasticSearchKernelExtensionFactory.java:24)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.elasticsearch.ElasticSearchKernelExtensionFactory.newInstance(ElasticSearchKernelExtensionFactory.java:40)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.elasticsearch.ElasticSearchKernelExtensionFactory.newInstance(ElasticSearchKernelExtensionFactory.java:18)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.extension.KernelExtensions.newInstance(KernelExtensions.java:78)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.extension.KernelExtensions.init(KernelExtensions.java:61)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.init(LifeSupport.java:406)
Mar 02 10:33:00 nikhil-computer neo4j[12008]: ... 12 more
Mar 02 10:33:00 nikhil-computer neo4j[12008]: 2018-03-02 05:03:00.794+0000 INFO Neo4j Server shutdown initiated by request
Mar 02 10:33:00 nikhil-computer systemd[1]: neo4j.service: Main process exited, code=exited, status=1/FAILURE
Mar 02 10:33:00 nikhil-computer systemd[1]: neo4j.service: Unit entered failed state.
Mar 02 10:33:00 nikhil-computer systemd[1]: neo4j.service: Failed with result 'exit-code'.
Mar 02 10:33:00 nikhil-computer systemd[1]: neo4j.service: Service hold-off time over, scheduling restart.
Mar 02 10:33:00 nikhil-computer systemd[1]: Stopped Neo4j Graph Database.
Kindly guide me a way to connect neo4j-3.3.3 with elastic-search or refer to some latest official docs.
Thanks in Advance Cheers
/var/log/neo4j/debug.log? Have you perform an upgrade of ubuntu ? – logisima