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When experimenting with Cassandra I've observed that Cassandra listens to the following ports:
- TCP *:8080
- TCP *:8888
- TCP *:57311
- TCP *:57312
- TCP 127.0.0.1:7000
- TCP 127.0.0.1:9160
- UDP 127.0.0.1:700
How does Cassandra use each of the ports listed?
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Ports 57311 and 57312 are randomly assigned ports used for RMI communication. These ports change each time Cassandra starts up, but need to be open in the firewall, along with 8080/7199 (depending on version), to allow for remote JMX access. Something that doesn't appear to be particularly well documented, but has tripped me up in the past.