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Hello,
I understand that you are experiencing following error when running telnet command to troubleshoot your MSK serverless endpoint:
telnet: could not resolve abc.c2.kafka-serverless.us-west-2.amazonaws.com/9098: Name or service not known
I would request you to please check your telnet command and run the command again to confirm your network connectivity.
Telnet command syntax:
telnet <endpoint> <port number>
From the error message, I can see you are passing port number along with your endpoint (abc.c2.kafka-serverless.us-west-2.amazonaws.com/9098) due to which you are receiving above error. Correct telnet command syntax is shared below:
telnet abc.c2.kafka-serverless.us-west-2.amazonaws.com 9098
[+] Troubleshooting your Amazon MSK cluster - Unable to access cluster from within AWS: Networking issues - https://docs.aws.amazon.com/msk/latest/developerguide/troubleshooting.html#networking-trouble
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