How Long Do I Have to Wait to File for Disabilty Again
Your Linux organisation is taking too long to shut down? Here are the steps you can take to find out what is causing the delayed shutdown and fix the consequence.
I hope y'all are a tad bit familiar with the sigterm and sigkill concept.
When you shut down your Linux system, it sends the sigterm and politely asks the running processes to cease. Some processes misbehave and they ignore the sigterm and keep on running.
This could cause a delay to the shutdown process as your system volition wait for the running processes to stop for a predefined time period. Afterwards this time period, information technology sends the kill signal to force stop all the remaining running processes and shuts down the organisation. I recommend reading well-nigh sigterm vs sigkill to sympathise the difference.
In fact, in some cases, you would meet a message like 'a cease job is running' on the black screen.
If your organisation is taking also long in shutting down, you can do the following:
- Bank check which process/service is taking too long and if yous can remove or reconfigure it to behave properly.
- Alter the default waiting period before your arrangement force stops the running processes. [Quick and dirty fix]
I am using Ubuntu here which uses systemd. The commands and steps here are valid for whatever Linux distribution that uses systemd (about of them do).
Check which processes are causing long shutdown in Linux
If you desire to effigy out what's incorrect, yous should check what happened at the last shutdown. Utilise this command to get the ability of 'I know what you did last session' (pun intended):
journalctl -rb -1 The journalctl control allows yous to read system logs. With options '-b -i' yous filter the logs for the concluding boot session. With option '-r', the logs are shown in reverse chronological gild.
In other words, the 'journalctl -rb -1' control will evidence the system logs but before your Linux organisation was shutdown the concluding fourth dimension. This is what you demand to analyze the long shutdown problem in Linux.
No journal logs? Here's what you should do
If there are no periodical logs, please make certain that your distribution uses systemd.
Even on some Linux distributions with systemd, the journal logs are not activated by default.
Brand sure that /var/log/journal exists. If it doesn't, create it:
sudo mkdir /var/log/journal Yous should also cheque the content of /etc/systemd/journald.conf file and make sure that the value of Storage is set to either motorcar or persistent.
Practise you find something suspicious in the logs? Is there a procedure/service refusing to cease? If yes, investigate if y'all could remove it without side effects or if you could reconfigure it. Don't go blindly removing stuff here, please. You should accept noesis of the process.
Speed up shutdown in Linux by reducing default stop timeout [Quick fix]
The default wait period for the shut downwardly is usually set at ninety seconds. Your system tries to force stop the services after this time flow.
If you want your Linux arrangement to close down quickly, you tin can alter this waiting period.
You lot'll find all the systemd settings in the config file located at /etc/systemd/organisation.conf. This file should be filled with lots of line starting with #. They correspond the default values of the entries in the file.
Before you exercise anything, it will be a skilful idea to brand a copy of the original file.
sudo cp /etc/systemd/organization.conf /etc/systemd/system.conf.orig Await for DefaultTimeoutStopSec here. Information technology should probably be set to ninety sec.
#DefaultTimeoutStopSec=90s You take to change this value to something more convenient similar 5 or 10 seconds.
DefaultTimeoutStopSec=5s If you don't know how to edit the config file in terminal, use this command to open the file for editing in your system's default text editor (like Gedit):
sudo xdg-open /etc/systemd/system.conf 
Don't forget to remove the # earlier DefaultTimeoutStopSec. Save the file and reboot your organization.
This should help you lot reduce the shutdown delay for your Linux organization.
Watchdog outcome!
Linux has a module named watchdog that is used for monitoring whether sure services are running or non. Information technology could be configured to automatically reboot systems if they are hanged due to software error.
It is unusual to employ Watchdog on desktop systems because you can manually shutdown or reboot the organization. It is often used on remote servers.
Start check watchdog is running:
ps -af | grep scout* If watchdog is running on your system, y'all can modify the ShutdownWatchdogSec value from 10 minutes to something lower in the systemd config file /etc/systemd/system.conf.
Were you able to fix the lengthy shutdown?
I promise this tutorial helped y'all in investigating and fixing the long shutdown issue on your organization. Practise permit me know in the comments if you lot managed to fix it.
Source: https://itsfoss.com/long-shutdown-linux/
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