Connecting to Casandra from remote machine

Question

Hi All,

I want to ask for your help on how i can connect to my cassandra DB on my droplet from remote machine. I did everything that is written in this article: Install Cassandra but when I try to connect from my C# code:

            cluster = Cassandra.Cluster.Builder().WithCredentials("abc", "abc")
             .AddContactPoints(new[] { "12.34.56.78" })
             .WithPort(9168)
             .Build();

            var session = cluster.Connect();
            var keyspace = "Test";
            session.CreateKeyspaceIfNotExists(keyspace);
            session.ChangeKeyspace(keyspace);

I’m getting-> Exception thrown: ‘Cassandra.NoHostAvailableException’ in Cassandra.dll

Additional information: None of the hosts tried for query are available (tried: 12.34.56.78:9168)

I also tried from other Cassandra GUI Clients like DBeaver but I;m getting the same error.

My Droplet is Ubuntu 14.04. From localhost I have no problem with Casandra my only problem is from remote.

Thank you in advance.

alinabrett4 · Answer

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Patrick Ancillotti · Answer

Hi @fstafai , It sounds like either your local droplet firewall rules, or your cassandra configuration are blocking this. The easiest way to check is to look in your cassandra configuration for the listen_address, or listen_interface directives (as described in : https://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html ) and confirm that it’s listening on the right interface, and the right address.

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