cqlsh控制台中的NoHostAvailable错误 [英] NoHostAvailable error in cqlsh console

问题描述

我以后可以摆脱此错误，但是我不确定我所做的是正确的.1)

I was able to get rid of this error later but i am not sure what i did is correct. 1 )

CREATE KEYSPACE myKeySpace WITH replication = 
  {'class': 'NetworkTopologyStrategy', 'dc1': '1', 'dc2': '2'}
  AND durable_writes = true;

执行创建表，然后选择表.这会在控制台中引发"NoHostAvailable:"错误.

Execute create table and select table after this. This throws "NoHostAvailable:" error in the console.

2)如果我将create语句更改为下面的语句，则选择查询有效.

2 ) If I change the create statement to the below one, the select query works.

CREATE KEYSPACE myKeySpace WITH replication = 
  {'class': 'NetworkTopologyStrategy', 'datacenter1': '1', 'dc2': '2'}
  AND durable_writes = true; 

如果我有一个默认的datacenter1，它可以工作.我无法理解为什么仅在给datacenter1时它才起作用.请帮忙.

If I have a default datacenter1, it works. I'm not able to understand why it is only working when I give datacenter1. Please help.

推荐答案

执行 nodetool状态时，您看到哪个数据中心?

Which data centers do you see when you execute a nodetool status?

您指定为键空间 的复制因子(RF)的数据中心必须在 cassandra-rackdc.properties 或 cassandra-拓扑.properties 文件(取决于您配置的Snitch).

The data centers that you specify as the replication factor (RF) for your keyspace must be predefined in either your cassandra-rackdc.properties or cassandra-topology.properties files (depending the Snitch you configured).

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