首次成功后，Neo4j HA备份失败

Question

我已经使用2.0.2版企业成功设置了neo4j 3实例HA群集，但是使用内置备份脚本（../ bin / neo4j-backup）时出现问题。

我手动运行：

./bin/neo4j-backup -from ha://10.6.10.48:5001 -to /usr/local/neo4j/backup

...在主服务器上，第一次运行正常，将数据转储到../neo4j/backup。

使用相同命令的后续尝试仅在命令行上生成：

Could not find backup server in cluster neo4j.ha at 10.6.10.48:5001, operation timed out

，这在messages.log中：

2014-04-29 17:08:00.919+0000 DEBUG [o.n.c.p.c.ClusterState$4]: ClusterState: entered-[configurationRequest]->entered from:cluster://10.6.10.48:5002 conversation-id:-1/8# payload:-1:cluster://0.0.0.0:5002/?name=Backup
2014-04-29 17:08:00.922+0000 ERROR [o.n.c.c.NetworkSender]: Receive exception:
java.nio.channels.ClosedChannelException: null
        at org.jboss.netty.channel.socket.nio.AbstractNioWorker.cleanUpWriteBuffer(AbstractNioWorker.java:409) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.channel.socket.nio.AbstractNioWorker.writeFromUserCode(AbstractNioWorker.java:127) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:83) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.channel.Channels.write(Channels.java:725) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.doEncode(OneToOneEncoder.java:71) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:59) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.channel.Channels.write(Channels.java:704) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.channel.Channels.write(Channels.java:671) ~[netty-3.6.3.Final.jar:na]
        at org.jboss.netty.channel.AbstractChannel.write(AbstractChannel.java:248) ~[netty-3.6.3.Final.jar:na]
        at org.neo4j.cluster.com.NetworkSender$2.run(NetworkSender.java:266) ~[neo4j-cluster-2.0.2.jar:2.0.2]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) ~[na:1.7.0_15]
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) ~[na:1.7.0_15]
        at java.util.concurrent.FutureTask.run(FutureTask.java:166) ~[na:1.7.0_15]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_15]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_15]
        at java.lang.Thread.run(Thread.java:722) [na:1.7.0_15]

（异常每隔5秒重复一次）

相关的neo4j.properties值：

online_backup_enabled=true
online_backup_server=127.0.0.1:6362
ha.cluster_server=10.6.10.48:5001

我已检查所有实例的所有防火墙设置。

任何帮助将不胜感激！

Answer 1

与single://<host>相比，以一般方式运行在线备份与ha://<host>相比更加轻松。从功能视角来看，ha://没有优势。

所以你可以改变

online_backup_server = 10.6.10.48：6362

然后运行

/bin/neo4j-backup -single ha://10.6.10.48:6362 -to /usr/local/neo4j/backup