How to check if a host needs to reboot?

Latest response

Hello Community,

I'd like to know how to figure out if a host needs to be rebooted after the installation of updates. Is there any way to determine wether a reboot is needed or not?

By know I could use the following script to create a file if a reboot is necessary:

#!/bin/bash
LAST_KERNEL=$(rpm -q --last kernel | perl -pe 's/^kernel-(\S+).*/$1/' | head -1)CURRENT_KERNEL=$(uname -r)

if [[ ! $LAST_KERNEL = $CURRENT_KERNEL ]];
then
  touch /var/run/reboot-required
fi

But I'm not sure if a new kernelversion is the only reason that requires a reboot.

On SLES there is the command zypper ps -s to check for running processes which use deleted files. Is there a similar mechanism in RHEL? Or are there no running processes which use deleted files because these are reloaded every time an update changes files used by some process?

Kind regards,
Joerg

JK

Responses