Nodetool describeclustercông việc

I have an Apache Cassandra cluster with five nodes. When I run "nodetool status" command, it shows all the five nodes in the cluster. But when I run a command like "nodetool -h decommission" or even "nodetool -h status", I get an error saying "Failed to connect to :7199. I have tried everything that the online documentation says, and various replies on stackoverflow suggest, but no success. I have disabled Firewall and still no luck. Perhaps I am missing something somewhere. I would like someone to help me troubleshoot this problem, using TeamViewer. For an experienced Apache Cassandra professional, it should be easy to solve.

...scripting Docker registry knowledge Services, system from fedora Basic network knowledge and troubleshooting (IP, Whois, dig, port scanning, firewalls) Logrotate setup and maintenance SQL knowledge (cqlsh) Prefered BONUS POINTS: Background in eCommerce Background in Agile methodologies Experience managing distributed systems Kafka/Zookeeper knowledge Cassandra set up and maintenance (rolling restarts, nodetool repair)...

...myself a few different ways and writing the cassandra mailing list for help. But so far I've had no luck. And this is a problem because we can't perform database cleanup actions on the ring with the dead node still there. So that's where we need help. The only thing you would need to do is remove this dead cassandra node from the ring. Such that you can issue this command: [root@beta-new:~] #nodetool status Datacenter: datacenter1 ======================= Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tokens Owns Host ID Rack UN 212.74 KB 256 49.4% fd2f76ae-8dcf-4e93-a37f-bf1e9088696e rack1 DN ? 256 50.6% f2a48fc7-a362-43f5-9061-4bb3739fdeaf rack1 A...