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+3  Q: 

Expanding a Cassandra cluster with one additional node: what ports need to be open?

Assume a Cassandra cluster with hosts A and B. This cluster shall now be extended with another host C. Assume that Cis on a firewalled network were all packets are dropped by default.

Which ports and protocols must be opened up between C <> A and C <> B for the new node C to function properly?

+2  A: 

7000 TCP (the internal communication port) Btw, take a look at this question

Schildmeijer  2010-04-21 11:23:59
Excellent answer! Thanks!
knorv  2010-04-22 14:33:06

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