feat: adding support to launch MAPDL on remote HPC clusters

[germa89]

...

HIGHLY UNDER DEVELOPMENT!!

Description

As the title.

Notes

• Consider to return two objects, Mapdl and job (object to query/manage the HPC job status)
• Sanitaze the input parameters. https://app.deepsource.com/directory/analyzers/python/issues/BAN-B601

Example

from ansys.mapdl.core.hpc import launch_on_remote_hpc
import os

from ansys.mapdl.core import LOG

LOG.setLevel("DEBUG")
LOG.log_to_file("mylog.log")

mapdl = launch_on_remote_hpc(
    hostname="myhostname",
    username="user",
    password="mypass",
    exec_file="/ansys_inc/v242/ansys/bin/ansys242",
    run_location="/home/user/simulation",
    # loglevel="DEBUG",
    scheduler_options={"partition": "partition"},
    replace_env_vars={"ANSYS_LOCK": "OFF"},
    nproc=2, # required
    )

mapdl.input("apdl.inp")

print(mapdl.jobid)

print(mapdl.prep7())

mapdl.exit()

print("Ended")

Issue linked

NA

Checklist

• I have visited and read Develop PyMAPDL.
• I have tested my changes locally
• I have added necessary documentation or updated existing documentation.
• I have followed the PyMAPDL coding style guidelines.
• I have added appropriate unit tests that also ensure the minimal coverage criteria.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have marked this PR as draft if it is not ready to be reviewed yet.
• I have made sure that the title of my PR follows Commit naming conventions (e.g. feat: adding new MAPDL command)

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@ansys-reviewer-bot review

To fix the problem, we need to change the missing host key policy from AutoAddPolicy to RejectPolicy. This ensures that the SSH connection will only be established if the host key is already known and trusted, thereby preventing potential man-in-the-middle attacks.

• Change the set_missing_host_key_policy method call to use RejectPolicy instead of AutoAddPolicy.
• Ensure that the paramiko.RejectPolicy is imported if it is not already.