Develop Reference

Demoting a subprocess call from running as admin

I'm running a python script through powershell:
python.exe script.py
powershell is configured to run as Admin on the machine (Windows). Inside the script I'm trying to run subprocess:
test_process = subprocess.Popen("subscript.exe")
What I need for the "subscript.exe" process (subprocess) not to run as an admin on the machine, while not stopping the execution of the original script.

If Powershell and python need to run as admin, but you want just the subscript to run with basic user privileges, you can probably do something like this (not sure if you need to add arguments separately):
subprocess.Popen('runas /trustlevel:0x20000 subscript.exe')
I don't have python on my machine at the moment, but here's what it looks like running a new Powershell process that requires admin permissions for example:
trust level 0x20000 equates to Basic User, which you can see with runas /showtrustlevels. In my case, it's only one available.

Asterisk AGI AWS "ProfileNotFound: The config profile (foo) could not be found"

To give you some background I have a bash script being launched from Asterisk via a Python AGI that runs against Amazon Polly and generates a .sln file. I have this working on a CentOS server but am attempting to migrate it to a Debian Server.
This is the line item of code that is giving me problems
aws polly synthesize-speech --output-format pcm --debug --region us-east-2 --profile asterisk --voice-id $voice --text "$1" --sample-rate 8000 $filename.sln >/dev/null
I keep getting this error
ProfileNotFound: The config profile (foo) could not be found
This is an example of my /root/.aws/config
[default]
region = us-east-2
output = json
[profile asterisk]
region = us-east-2
output = json
[asterisk]
region = us-east-2
output = json
The /root/.aws/credentials looks similar but with the keys in them.
I've even tried storing all this data in environment variables and going with default so as to get past this, but then I have the issue where it throws unable to locate credentials, or must define region (got past that by defining the region inline). It's almost like, Asterisk is somehow running this out of some isolated session that I can't get the credentials or config/credentials file to. Which from research and how I set it up it is currently running as Root so that should not be an issue.
Any help is much appreciated, thanks!

Asterisk should be runned under asterisk user for security.
Likly on your prevous install it was under root, so all was working.
Please ensure you have setuped AWS Polly for asterisk user or create sudo entry and use sudo.
If you use System command it also have no shell(bash), so you have start it via bash script and setup PATH and other required variables yourself.

Python code deployment in saltstack

How can we deploy a python code from master to minion using saltstack? I am working on localhost.
I've done the installation things
I am not trying to completely understand it, I just want to know how the deployment could be.

You can use cmd state module to execute a script from master to a minion,
run_python:
cmd.script:
- name: script_optional_name
- source: salt://test/script.py
The script will be executed in a minion.

How run a command (python file) on boot on AWS EC2 server

I'm having some problem making a python file run everytime the AWS server boots.
I am trying to run a python file to start a web server on Amazon Webservice EC2 server.
But I am limited to edit systemd folder and other folders such as init.d
Is there anything wrong?
Sorry I don't really understand EC2's OS, it seems a lot of methods are not working on it.
What I usually do via ssh to start my server is:
python hello.py
Can anyone tell me how to run this file automatically every time system reboots?

It depends on your linux OS but you are on the right track (init.d). This is exactly where you'd want to run arbitrary shell scripts on start up.
Here is a great HOWTO and explanation:
https://www.tldp.org/HOWTO/HighQuality-Apps-HOWTO/boot.html
and another stack overflow specific to running a python script:
Run Python script at startup in Ubuntu
if you want to share you linux OS I can be more specific.
EDIT: This may help, looks like they have some sort of launch wizard:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html
When you launch an instance in Amazon EC2, you have the option of
passing user data to the instance that can be used to perform common
automated configuration tasks and even run scripts after the instance
starts. You can pass two types of user data to Amazon EC2: shell
scripts and cloud-init directives. You can also pass this data into
the launch wizard as plain text, as a file (this is useful for
launching instances using the command line tools), or as
base64-encoded text (for API calls).

Installing and Starting a CherryPy server script as Windows service (using sc.exe)

I am trying to install and start a simple CherryPy server as a Windows service.
Here is the script: (Removed some lines to cut it short. It's fully working when executing manually from the command-line)
app = AdminMediaHandler(django.core.handlers.wsgi.WSGIHandler())
logged_app = TransLogger(app)
server = wsgiserver.CherryPyWSGIServer( ('127.0.0.1', 8632), logged_app, server_name='localhost', numthreads=20 )
try:
server.start()
except KeyboardInterrupt:
server.stop()
I'm using sc.exe to install and start the service. Installation goes fine, but I can't seem to start the service.
The command used is: (note there're spaces in the paths, though I'm handeling this with double-quotes, and the binPath is working when executing its string manually through the command-line)
> sc.exe create "ServiceName" binPath= "\"C:\Path to Python\python.exe\" \"C:\Path to CherryPy Script\cherryserver.py\""
> sc.exe start "ServiceName"
I keep getting this error, no matter if attempting to start the service using sc.exe or through services.msc GUI:
[SC] StartService FAILED 1053:
The service did not respond to the start or control request in a timely fashion.
From what I understand, this is happenning because python.exe doesn't implement the Windows Service API.
I do not wish to create an .exe from the script, using py2exe.
I have found this answer that suggests to install the service using different tools than sc.exe, called srvany.exe & instsrv.exe. However, I can't find them in the Win2K Resource Kit website.
Does anybody know how to install & start this .py as a Windows succesfully?
Does anybody know

CherryPy ships with a module for starting as a Windows service. See this other SO question for instructions on how to install and run it. You'll probably want to switch from your current approach (of passing the Django app directly to the WSGIServer) and use cherrypy.tree.graft instead.

I prefer nssm for installing normal scripts as a service.
You can copy the nssm.exe in the C:\Windows\system32 or C:\Windows\SysWOW64 directory depending on your system. After that you are able to install a Service as follow:
nssm install yourservicename
For a python script you must set the application path to your python.exe and the argument is your script self.
Other common commands for start/stop/edit your service are:
nssm start yourservicename
nssm stop yourservicename
nssm edit yourservicename

I eventually used ServiceInstaller aka SMaster, as stated in this answer. The URL in the given answer is broken, and I couldn't find a working URL. I just had srunner.exe available locally beforehand.
Note there was another obstacle to overcome though, as ServiceInstaller can't handle files with spaces in their paths.
So, I used the old DOS path formatting for service registration.
Instead of registering C:\Program Files\MyApp\python.exe, I registered C:\PROGRA~1\MyApp\python.exe.