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Hi

Good day

My backups were running before now, all of a sudden they started failing because of this error:

 

Unable to communicate with remote machine {Linux media Agent} to start data pipe. Please check the following:
1. Network connectivity exists between client and remote machine

  1. Product servuces are running on remote machine.
  2. Firewall is setup properly between client and remote machine
  3. Error Connection failed on oracle_dba with these errors: 1 Couldn/t complete tunnel connection to tape_linux)server on 192.168.1.112:8413: No route to host

All these seem like network issues. I tried to add entries into the host files of all clients affected. It still keeps failing.

 

This is the case

I want to backup oracle files and instances to tape, via a linux media agent. The backups ran some days ago, and all of a sudden they have failed with the errors i quoted up here. Someone should help me resolve this challenge.

 

Thanks.

Hello @zadok001 

Thanks for the great question!
The CVFWD.log is going to have all the tunnel connection details between the MA’s and the clients. 
I would check on the client you see a tunnel opening up and the same on the Media agent that is reporting the issue. 

If you want to reproduce the error without starting a job you can setup a “persistent” tunnel between the two servers and validate that it gets established. 
https://documentation.commvault.com/2023e/expert/direct_connections_using_basic_or_advanced_network_settings.html

This is a tunnel that the client will always try to keep open and the CVFWD log will either show a successful attempt or a failed attempt every 15 seconds. 

If all else fails, Support ticket is the way to go :D

Kind regards
Albert Williams

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