[jira] [Created] (AIRAVATA-2687) Distributed agents on compute resources to communicate with Airavata server

["Dimuthu Upeksha (JIRA)" <ji...@apache.org>]

Dimuthu Upeksha created AIRAVATA-2687:
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             Summary: Distributed agents on compute resources to communicate with Airavata server 
                 Key: AIRAVATA-2687
                 URL: https://issues.apache.org/jira/browse/AIRAVATA-2687
             Project: Airavata
          Issue Type: New Feature
            Reporter: Dimuthu Upeksha
            Assignee: Dimuthu Upeksha


Currently Airavata talk to compute resources through SSH communication. However there are scenarios where this might not work.
 # Airavata can not setup a SSH connection when the compute resource is set behind a firewall or the system administrators do not allow to create a SSH connections to the compute resource. 
 # Doing a burst of SSH call to a particular compute resource leads to the false detection of Airavata server doing DoS attack on the compute resource.

As an alternative, we think of an another approach to create the communication between Airavata server and the compute resource. Suggestion is to install an agent on the compute resource and agent creates a connection to the Airavata server when required. This might eliminate the firewall issue as the compute resource is the one which initiates the connection. Then Server can send commands. Communication protocol might be application specific but it should support both request response and fire and forget model.

However there challenges,
 # How does the agent find the Airavata server
 # What happens when an agent failed? How does Airavata server knows it?
 # When Airavata server needs to execute a command on a compute resource where an agent is installed, how does it find the correct agent connection?

At the first stage, we need to send linux commands to be executed on the compute resource and transfer files through the agent.

 

 



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