<\/p>\n\n\n\n
Typically you’ll need to reboot a server after an update if the Linux Kernel was updated. It is possible that services need to be restarted. <\/p>\n\n\n\n
There is some good information here https:\/\/serverfault.com\/questions\/122178\/how-can-i-check-from-the-command-line-if-a-reboot-is-required-on-rhel-or-centos<\/p>\n\n\n\n
Install the needs-restarting utility<\/p>\n\n\n\n
sudo dnf install -y yum-utils<\/pre>\n\n\n\nOnce installed, we can check if we need to reboot with<\/p>\n\n\n\n
sudo needs-restarting -r<\/pre>\n\n\n\nThe -r option only reports if a reboot is required.<\/p>\n\n\n\n
If we wanted to automatically check and reboot, we could do<\/p>\n\n\n\n
sudo needs-restarting -r || sudo shutdown -r<\/pre>\n\n\n\n<\/p>\n\n\n\n
Alternative way<\/h2>\n\n\n\n
We could alternatively just check the kernel version and if it is different, manually reboot the machine. Note that there could be a couple cases where the kernel didn’t update, but you still need a reboot, or services needed to be restarted View links below for more information.<\/p>\n\n\n\n
<\/p>\n\n\n\n
LAST_KERNEL=$(rpm -q --last kernel | perl -pe 's\/^kernel-(\\S+).*\/$1\/' | head -1)\nCURRENT_KERNEL=$(uname -r)\n\ntest $LAST_KERNEL = $CURRENT_KERNEL || shutdown -r<\/pre>\n","protected":false},"excerpt":{"rendered":"Typically you’ll need to reboot a server after an update if the Linux Kernel was updated. It is possible that services need to be restarted. There is some good information here https:\/\/serverfault.com\/questions\/122178\/how-can-i-check-from-the-command-line-if-a-reboot-is-required-on-rhel-or-centos Using Yum Utilities needs-restarting Install the needs-restarting utility … Continue reading