Question

我在这台服务器上使用Neo4j超过3个月。不知道发生了什么变化，但今天早上我无法启动Neo4j服务器。

直到今天一切都很好，我知道Neo4j或其他任何东西都没有变化。我目前正在使用neo4j 3.1.0。

以下是错误日志。

    xxx@dataserver:~$ sudo neo4j console
Starting Neo4j.
WARNING: Max 1024 open files allowed, minimum of 40000 recommended. See the Neo4j manual.
2017-05-01 03:09:17.948+0000 INFO  Starting...
2017-05-01 03:09:18.616+0000 INFO  Bolt enabled on 0.0.0.0:7687.
2017-05-01 03:09:20.766+0000 ERROR Failed to start Neo4j: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@2241b683' was successfully initialized, but failed to start. Please see attached cause exception. Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@2241b683' was successfully initialized, but failed to start. Please see attached cause exception.
org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@2241b683' was successfully initialized, but failed to start. Please see attached cause exception.
        at org.neo4j.server.exception.ServerStartupErrors.translateToServerStartupError(ServerStartupErrors.java:68)
        at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:227)
        at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:91)
        at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:68)
        at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:28)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.server.database.LifecycleManagingDatabase@2241b683' was successfully initialized, but failed to start. Please see attached cause exception.
        at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:443)
        at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
        at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:199)
        ... 3 more
Caused by: java.lang.RuntimeException: Error starting org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory, /var/lib/neo4j/data/databases/default.graphdb
        at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(GraphDatabaseFacadeFactory.java:193)
        at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:124)
        at org.neo4j.server.CommunityNeoServer.lambda$static$0(CommunityNeoServer.java:57)
        at org.neo4j.server.database.LifecycleManagingDatabase.start(LifecycleManagingDatabase.java:89)
        at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:433)
        ... 5 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.recovery.Recovery@4b1ec7fa' failed to initialize. Please see attached cause exception.
        at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.init(LifeSupport.java:415)
        at org.neo4j.kernel.lifecycle.LifeSupport.init(LifeSupport.java:62)
        at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:98)
        at org.neo4j.kernel.NeoStoreDataSource.start(NeoStoreDataSource.java:517)
        at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:433)
        at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
        at org.neo4j.kernel.impl.transaction.state.DataSourceManager.start(DataSourceManager.java:100)
        at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:433)
        at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
        at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(GraphDatabaseFacadeFactory.java:189)
        ... 9 more
Caused by: java.lang.IllegalArgumentException: Unknown entry type -1 for version -1. At position LogPosition{logVersion=94, byteOffset=157773910} and entry version V2_1
        at org.neo4j.kernel.impl.transaction.log.entry.LogEntryVersion.entryParser(LogEntryVersion.java:141)
        at org.neo4j.kernel.impl.transaction.log.entry.VersionAwareLogEntryReader.readLogEntry(VersionAwareLogEntryReader.java:84)
        at org.neo4j.kernel.impl.transaction.log.LogEntryCursor.next(LogEntryCursor.java:54)
        at org.neo4j.kernel.recovery.LatestCheckPointFinder.find(LatestCheckPointFinder.java:78)
        at org.neo4j.kernel.recovery.PositionToRecoverFrom.apply(PositionToRecoverFrom.java:53)
        at org.neo4j.kernel.recovery.DefaultRecoverySPI.getPositionToRecoverFrom(DefaultRecoverySPI.java:80)
        at org.neo4j.kernel.recovery.Recovery.init(Recovery.java:80)
        at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.init(LifeSupport.java:405)
        ... 18 more

Answer 1

停止服务

在neo4j配置文件中将dbms.allow_upgrade更改为true

重新启动服务

我遇到了同样的问题，升级数据库解决了它。如果您仍在使用默认密码，我也建议更改密码。启动服务后，它应该升级数据库，升级后，如果您不希望neo4j自动更新，则可以再次将dbms.allow_upgrade更改为false。

Neo4j服务无法启动

1 个答案: