Files
the-littlest-jupyterhub/tljh/systemd.py
2021-11-03 23:53:41 +01:00

93 lines
2.0 KiB
Python

"""
Wraps systemctl to install, uninstall, start & stop systemd services.
If we use a debian package instead, we can get rid of all this code.
"""
import subprocess
import os
def reload_daemon():
"""
Equivalent to systemctl daemon-reload.
Makes systemd discover new units.
"""
subprocess.run(['systemctl', 'daemon-reload'], check=True)
def install_unit(name, unit, path='/etc/systemd/system'):
"""
Install unit with given name
"""
with open(os.path.join(path, name), 'w') as f:
f.write(unit)
def uninstall_unit(name, path='/etc/systemd/system'):
"""
Uninstall unit with given name
"""
subprocess.run(['rm', os.path.join(path, name)], check=True)
def start_service(name):
"""
Start service with given name.
"""
subprocess.run(['systemctl', 'start', name], check=True)
def stop_service(name):
"""
Start service with given name.
"""
subprocess.run(['systemctl', 'stop', name], check=True)
def restart_service(name):
"""
Restart service with given name.
"""
subprocess.run(['systemctl', 'restart', name], check=True)
def enable_service(name):
"""
Enable a service with given name.
This most likely makes the service start on bootup
"""
subprocess.run(['systemctl', 'enable', name], check=True)
def disable_service(name):
"""
Enable a service with given name.
This most likely makes the service start on bootup
"""
subprocess.run(['systemctl', 'disable', name], check=True)
def check_service_active(name):
"""
Check if a service is currently active (running)
"""
try:
subprocess.run(['systemctl', 'is-active', name], check=True)
return True
except subprocess.CalledProcessError:
return False
def check_service_enabled(name):
"""
Check if a service is enabled
"""
try:
subprocess.run(['systemctl', 'is-enabled', name], check=True)
return True
except subprocess.CalledProcessError:
return False