Question

我是Cassandra的新手，我正在尝试在两个测试ec2 ubuntu实例上建立一个简单的2节点集群。但复制不起作用，nodetool ring不显示两个实例。我能做错什么？我正在使用cassandra版本2.0.11。

这是我在两台机器上配置的内容：

listen_address: <private_ip>
rpc_address: <private_ip>
broadcast_address: <public_ip>
seeds: <private_ip_of_other_machine>
endpoint_snitch: Ec2Snitch

我已配置EC2安全组以允许这些实例之间所有端口上的所有流量。我在这做错了什么？如果需要，我可以提供cassandra日志。谢谢。

编辑：我目前得到的错误是：

java.lang.RuntimeException: Unable to gossip with any seeds
    at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1340)
    at org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:543)
    at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:766)
    at org.apache.cassandra.service.StorageService.initServer(StorageService.java:693)
    at org.apache.cassandra.service.StorageService.initServer(StorageService.java:585)
    at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:300)
    at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:516)
    at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:625)
ERROR 15:08:03 Exception encountered during startup
java.lang.RuntimeException: Unable to gossip with any seeds
        at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1340) ~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:543) ~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:766) ~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:693) ~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:585) ~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:300) [apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:516) [apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:625) [apache-cassandra-2.2.5.jar:2.2.5]
WARN  15:08:03 No local state or state is in silent shutdown, not announcing shutdown

Answer 1

我看到的第一件事就是你的种子：清单错了。两个节点都应该具有相同的种子：list。对于简单的2节点测试设置，您只需要1个种子（选择一个）。如果节点位于同一个AZ中，则可以使用专用IP。

设置2个节点（ec2 ubuntu实例）Cassandra集群

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