Cassandra集群设置 - 无法与任何种子闲话 [英] Cassandra Cluster Set up - Unable to gossip with any seeds

问题描述

我想设置一个3节点Cassandra VM群集。

我从datastax包安装cassandra到个人vms，然后修改以下内容：

1. Seed - vm1（在所有vm配置中设置IP地址）




2. 使用listen_address作为主机ip更新了配置，添加了rpc_broadcast_address




3. 在防火墙规则中添加了cassandra端口以允许inter vm通信

   也尝试使用SSH连接到vms

在尝试所有这些之后，我启动了cassandra种子节点当我使用nodetool检查状态时，我看到节点状态是UN（Up / Normal）。
然后我在其他集群节点上启动cassandra。它无法启动与无法八卦与任何种子错误。
任何帮助将非常感谢！

堆栈跟踪：

  java.lang.RuntimeException：无法使用任何种子gossip 
在org.apache.cassandra.gms.Gossiper.doShadowRound（Gossiper.java:1334）〜[apache-cassandra-2.1.9.jar： 2.1.9] 
 at org.apache.cassandra.service.StorageService.checkForEndpointCollision（StorageService.java:540）〜[apache-cassandra-2.1.9.jar：2.1.9] 
 at org。 apache.cassandra.service.StorageService.prepareToJoin（StorageService.java:783）〜[apache-cassandra-2.1.9.jar：2.1.9] 
 at org.apache.cassandra.service.StorageService.initServer（StorageService .java：720）〜[apache-cassandra-2.1.9.jar：2.1.9] 
 at org.apache.cassandra.service.StorageService.initServer（StorageService.java:611）〜[apache-cassandra- 2.1.9.jar：2.1.9] 
 at org.apache.cassandra.service.CassandraDaemon.setup（CassandraDaemon.java:378）[apache-cassandra-2.1.9.jar：2.1.9] 
 at org.apache.cassandra.service.CassandraDaemon.activate（CassandraDaemon.java:537）[apache-cassandra-2.1.9.jar：2.1.9] 
 at org.apache.cassandra.service.CassandraDaemon .main（CassandraDaemon.java:626）[apache-cassandra-2.1.9.jar：2.1.9] 
  

谢谢！

解决方案

好的，花了一天时间之后，发现了问题。这的确是一个防火墙问题。除了在iptables中输入规则之外，还要确保ACCEPT规则出现在REJECT规则 - >顺序问题之前。
在更改顺序并重新启动iptables服务和cassandra之后，它开始工作，节点能够使用种子进行八卦。

I am trying to set up a 3 node Cassandra VM cluster.

I installed cassandra from datastax package on individual vms and then modified the following:

1. Seed - vm1 (set the ip address in all the vm configs)

2. Updated the config with listen_address as the host ip, added the rpc_broadcast_address

3. Added the cassandra ports in the firewall rules to allow for inter vm communication

4. Also tried connecting to the vms using SSH

After trying all of this, I started the cassandra seed node, it comes up fine and when I check for the status using nodetool, I see that the node status is UN (Up/Normal). I then start cassandra on the other cluster nodes. It fails to start up with unable to gossip with any seeds error. Any help will be greatly appreciated!

Stack Trace:

java.lang.RuntimeException: Unable to gossip with any seeds
    at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1334) ~[apache-cassandra-2.1.9.jar:2.1.9]
    at org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:540) ~[apache-cassandra-2.1.9.jar:2.1.9]
    at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:783) ~[apache-cassandra-2.1.9.jar:2.1.9]
    at org.apache.cassandra.service.StorageService.initServer(StorageService.java:720) ~[apache-cassandra-2.1.9.jar:2.1.9]
    at org.apache.cassandra.service.StorageService.initServer(StorageService.java:611) ~[apache-cassandra-2.1.9.jar:2.1.9]
    at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:378) [apache-cassandra-2.1.9.jar:2.1.9]
    at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:537) [apache-cassandra-2.1.9.jar:2.1.9]
    at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:626) [apache-cassandra-2.1.9.jar:2.1.9]

Thanks!

解决方案

Ok, after spending a day on this, found the issue. It was indeed a firewall issue. In addition to entering the rules in iptables, ensure that the ACCEPT rules appear before the REJECT rules -> ordering matters. After changing the order and restarting the iptables service and cassandra, it started working, the nodes were able to gossip with the seed.

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