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Check if nothing got defreezed during the freezing process

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This commit is contained in:
Kevin Veen-Birkenbach 2023-12-14 17:12:42 +01:00
parent f279c7000b
commit f73ea74cd5
2 changed files with 46 additions and 22 deletions
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4
group_vars/all
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@ -70,6 +70,10 @@ system_maintenance_cleanup_services:
- "cleanup-disc-space"
- "cleanup-failed-docker-backups"
### Freeze services (wait until they are finished to be sure that nobody else is doing stuff in the fridge)
- "system-maintenance-service-freeze"
- "system-maintenance-service-defrost"
### Services that Manipulate the System
system_maintenance_manipulation_services:
- "heal-docker"

64
roles/system-maintenance-service-freezer/files/system-maintenance-service-freezer.py
View File

@ -28,34 +28,54 @@ def check_service_active(service_name):
"""Check if a service is active or activating."""
result = subprocess.run(['systemctl', 'is-active', service_name], stdout=subprocess.PIPE)
service_status = result.stdout.decode('utf-8').strip()
return service_status in ['active', 'activating']
return_value=service_status in ['active', 'activating']
if return_value:
print(f"Service {service} is active.");
else:
print(f"Service {service} is not active.");
return return_value
def check_any_service_active(services):
"""Check if any service in the list is active or activating."""
for service in services:
if check_service_active(service_name):
return True
return False
def freeze(services_to_wait_for, ignored_services, timeout_sec):
break_time_sec=5
attempt=0
max_attempts=timeout_sec/break_time_sec
# Filter services that exist and are not in the ignored list
for service in services_to_wait_for:
print(f"\nFreezing: {service}")
if service in ignored_services:
print(f"{service} will be ignored.")
else:
while check_service_active(service):
current_time_iso = datetime.now().isoformat()
attempt += 1
print(f"{current_time_iso}#{attempt}/{max_attempts}: Waiting for {break_time_sec} seconds for {service} to stop...")
time.sleep(break_time_sec)
if attempt > max_attempts:
raise Exception(f"Error: Maximum attempts ({max_attempts}) reached. Exit.")
# Stop and disable the corresponding timer, if it exists
if service_file_exists(service,"timer"):
timer_name = service + ".timer"
subprocess.run(['systemctl', 'stop', timer_name])
subprocess.run(['systemctl', 'disable', timer_name])
print(f"{timer_name} stopped and disabled.")
any_service_active=True
print("Checking if any services is active.")
# This guaranties that no service will be started in the between time
while any_service_active:
# Filter services that exist and are not in the ignored list
for service in services_to_wait_for:
print(f"\nFreezing: {service}")
if service in ignored_services:
print(f"{service} will be ignored.")
else:
print(f"Skipped.")
while check_service_active(service):
current_time_iso = datetime.now().isoformat()
attempt += 1
print(f"{current_time_iso}#{attempt}/{max_attempts}: Waiting for {break_time_sec} seconds for {service} to stop...")
time.sleep(break_time_sec)
if attempt > max_attempts:
raise Exception(f"Error: Maximum attempts ({max_attempts}) reached. Exit.")
# Stop and disable the corresponding timer, if it exists
if service_file_exists(service,"timer"):
timer_name = service + ".timer"
subprocess.run(['systemctl', 'stop', timer_name])
subprocess.run(['systemctl', 'disable', timer_name])
print(f"{timer_name} stopped and disabled.")
else:
print(f"No timer to stop.")
print("Checking if any of the previous deactivated services is active.")
any_service_active=check_any_service_active(services_to_wait_for)
print("\nAll required services have stopped.")
def defrost(services_to_wait_for, ignored_services):