在遇到Cassandra CQLsh客户端无法连接的问题时，通过调整cassandra.yaml文件中rpc_address和listen_address的配置，成功解决了IP地址错误导致的连接失败。此经验分享了在StackOverflow上找到的解决方案，帮助开发者正确配置Cassandra节点，实现客户端的正常连接。
cassandra 的 cqlsh 客户端进不了，狂看各种教程，终于在stackoverflow 找到灵感。
开始报错：Connection error: Could not connect to 192.168.1.254:9160
原因是 IP 不对，IP 应该是 rpc_address ,这是在cassandra.yaml 里配置的。
我这里的 rpc_address:192.168.1.254
所以，在终端输入： cqlsh 192.168.1.254 9160
就可以登进去了。
来源：http://stackoverflow.com/questions/29121904/cassandra-cqlsh-connection-refused
灵感来源：You need to edit cassandra.yaml on the node you are trying to connect to and set the node ip address for rpc_address and listen_address and restart Cassandra.
rpc_address is the address on which Cassandra listens to the client calls.
listen_address is the address on which Cassandra listens to the other Cassandra nodes.
开始报错：Connection error: Could not connect to 192.168.1.254:9160
原因是 IP 不对，IP 应该是 rpc_address ,这是在cassandra.yaml 里配置的。
我这里的 rpc_address:192.168.1.254
所以，在终端输入： cqlsh 192.168.1.254 9160
就可以登进去了。
来源：http://stackoverflow.com/questions/29121904/cassandra-cqlsh-connection-refused
灵感来源：You need to edit cassandra.yaml on the node you are trying to connect to and set the node ip address for rpc_address and listen_address and restart Cassandra.
rpc_address is the address on which Cassandra listens to the client calls.
listen_address is the address on which Cassandra listens to the other Cassandra nodes.
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