To check if Cpanel/WHM server need reboot from command line, run
whmapi1 system_needs_reboot
Example
On a server with latest kernal
[root@ns522466 ~]# whmapi1 system_needs_reboot
---
data:
details: {}
needs_reboot: 0
metadata:
command: system_needs_reboot
reason: OK
result: 1
version: 1
[root@ns522466 ~]#
On a server that need reboot
[root@server22 ~]# whmapi1 system_needs_reboot
---
data:
details:
kernel:
boot_version: 3.10.0-962.3.2.lve1.5.42.el7.x86_64
running_version: 3.10.0-962.3.2.lve1.5.39.el7.x86_64
updates:
glibc: 2.17-323.el7_9
linux-firmware: 20200421-80.git78c0348.el7_9
openssl-libs: 1:1.0.2k-21.el7_9
needs_reboot: 1
metadata:
command: system_needs_reboot
reason: OK
result: 1
version: 1
[root@server22 ~]#

