Cassandra cqlsh - connection refused

启动cqlsh时，保存如下：

Connection error: ('Unable to connect to any servers', {'127.0.0.1': error(111, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Connection refused")})

在启动时，指定连接的IP和端口

./cqlsh xxx.xxx.xxx.xxx 9042

输出结果如下：

Connected to Test Cluster at 100.106.242.180:9042.
[cqlsh 5.0.1 | Cassandra 3.9 | CQL spec 3.4.2 | Native protocol v4]
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