Send Command to a linux host using workflows

Platform Automations
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1

Good day everyone, I am currently working with EdgeConnect because I want to send commands to a Linux host to restart a process. I remember seeing an EdgeConnect application for workflows, is that correct?

If that app no longer exists, how can I send that command to my host through a workflow?

2

Hello @Jorge3229 using ansible does the trick.

https://xxxxxxxx.apps.dynatrace.com/ui/apps/dynatrace.hub/browse/all?search=ansible&details=dynatrace.redhat.ansible

with this you can create an action to launch a job template in Red Hat Ansible Automation Controller.

3

You can take a look at Kubernetes Automation: Kubernetes Connector — Dynatrace Docs

This leverages EdgeConnect on Kubernetes, and you can leverage several actions (e.g., apply configuration or restart deployment) to perform certain tasks.

In theory you can also try to use a Kubernetes job/workload to execute a command on another host.

Please also refer to @DanielS post about using Red Hat Ansible, that’s a perfect alternative.

4

You can use a server in your host to allow restarting the process.
I do prefer the Ansible solution as it is more scalable than this approach.
But something like this should work.

import ssl
from http.server import HTTPServer, BaseHTTPRequestHandler
import subprocess

class RequestHandler(BaseHTTPRequestHandler):
    def do_POST(self):
        if self.path == '/restart-process':
            # Add authentication check here if needed
            self.restart_process()
        else:
            self.send_error(404, "Not Found")

    def restart_process(self):
        try:
            # Replace this with your actual restart command
            subprocess.run(["systemctl", "restart", "your-process-name"], check=True)
            self.send_response(200)
            self.send_header('Content-type', 'text/plain')
            self.end_headers()
            self.wfile.write(b"Process restarted successfully")
        except subprocess.CalledProcessError:
            self.send_error(500, "Failed to restart process")

def run_server():
    server_address = ('your-linux-host.internal', 443)  # Use the appropriate hostname and port
    httpd = HTTPServer(server_address, RequestHandler)

    # SSL wrapping
    context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
    context.load_cert_chain('server.crt', 'server.key')
    httpd.socket = context.wrap_socket(httpd.socket, server_side=True)

    print(f"Server running on https://{server_address[0]}:{server_address[1]}")
    httpd.serve_forever()

if __name__ == '__main__':
    run_server()

server.crt and server.key used for HTTPS
 The restart_process method uses subprocess.run to execute the restart command. Replace “your-process-name” with the actual process name