check_yum plugin shows 0 non-security updates about nagios-plugins HOT 4 CLOSED

Thanks for raising this, could you please paste the full output with -v -v -v so that I can debug your exact situation and find out why it's not picking up the non-security updates any more.

It's likely that updates to cover newer releases has broken this recently as this has been known working for many years, or it's possible that the output format has changed.

from nagios-plugins.

Thanks for the quick response.
The following was done on Rocky 8.6

./check_yum -v -v -v
Nagios Plugin for Yum updates on RedHat/CentOS systems - Version 0.12.3
Author: Hari Sekhon

setting plugin timeout to 30 seconds
running command: /usr/bin/yum --security check-update
Returncode: '100'
Output: 'Last metadata expiration check: 0:25:01 ago on Tue 07 Jun 2022 02:05:57 PM CEST.

c-ares.x86_64 1.13.0-6.el8 LCSB-BaseOS
grub2-common.noarch 1:2.02-123.el8 LCSB-BaseOS
grub2-efi-x64.x86_64 1:2.02-123.el8 LCSB-BaseOS
grub2-tools.x86_64 1:2.02-123.el8 LCSB-BaseOS
grub2-tools-extra.x86_64 1:2.02-123.el8 LCSB-BaseOS
grub2-tools-minimal.x86_64 1:2.02-123.el8 LCSB-BaseOS
kernel.x86_64 4.18.0-372.9.1.el8 LCSB-BaseOS
kernel-core.x86_64 4.18.0-372.9.1.el8 LCSB-BaseOS
kernel-modules.x86_64 4.18.0-372.9.1.el8 LCSB-BaseOS
kernel-tools.x86_64 4.18.0-372.9.1.el8 LCSB-BaseOS
kernel-tools-libs.x86_64 4.18.0-372.9.1.el8 LCSB-BaseOS
libsmbclient.x86_64 4.15.5-5.el8 LCSB-BaseOS
libssh.x86_64 0.9.6-3.el8 LCSB-BaseOS
libssh-config.noarch 0.9.6-3.el8 LCSB-BaseOS
libwbclient.x86_64 4.15.5-5.el8 LCSB-BaseOS
openssh.x86_64 8.0p1-13.el8 LCSB-BaseOS
openssh-clients.x86_64 8.0p1-13.el8 LCSB-BaseOS
openssh-server.x86_64 8.0p1-13.el8 LCSB-BaseOS
openssl.x86_64 1:1.1.1k-6.el8_5 LCSB-BaseOS
openssl-libs.x86_64 1:1.1.1k-6.el8_5 LCSB-BaseOS
polkit.x86_64 0.115-13.el8_5.2 LCSB-BaseOS
polkit-libs.x86_64 0.115-13.el8_5.2 LCSB-BaseOS
python3-perf.x86_64 4.18.0-372.9.1.el8 LCSB-BaseOS
samba-client.x86_64 4.15.5-5.el8 LCSB-BaseOS
samba-client-libs.x86_64 4.15.5-5.el8 LCSB-BaseOS
samba-common.noarch 4.15.5-5.el8 LCSB-BaseOS
samba-common-libs.x86_64 4.15.5-5.el8 LCSB-BaseOS
Obsoleting Packages
grub2-tools.x86_64 1:2.02-123.el8 LCSB-BaseOS
grub2-tools.x86_64 1:2.02-106.el8.0.2 @anaconda
grub2-tools-efi.x86_64 1:2.02-123.el8 LCSB-BaseOS
grub2-tools.x86_64 1:2.02-106.el8.0.2 @anaconda
grub2-tools-extra.x86_64 1:2.02-123.el8 LCSB-BaseOS
grub2-tools.x86_64 1:2.02-106.el8.0.2 @anaconda
grub2-tools-minimal.x86_64 1:2.02-123.el8 LCSB-BaseOS
grub2-tools.x86_64 1:2.02-106.el8.0.2 @anaconda
'
YUM CRITICAL: 28 Security Updates Available. 0 Non-Security Updates Available | security_updates_available=28 non_security_updates_available=0 total_updates_available=28

But there are many pending non-security updates.

dnf check-update
Last metadata expiration check: 0:00:19 ago on Tue 07 Jun 2022 02:33:16 PM CEST.

ModemManager-glib.x86_64 1.18.2-1.el8 LCSB-BaseOS
NetworkManager.x86_64 1:1.36.0-4.el8 LCSB-BaseOS
NetworkManager-libnm.x86_64 1:1.36.0-4.el8 LCSB-BaseOS
NetworkManager-team.x86_64 1:1.36.0-4.el8 LCSB-BaseOS
NetworkManager-tui.x86_64 1:1.36.0-4.el8 LCSB-BaseOS
...

Cheers,
Karim

from nagios-plugins.

Ah, this is because DNF is not outputting a summary line with the non-security updates like yum used to do, even though DNF answers the same call.

If you run like the plugin is doing:

yum --security check-update

you'll see it's not outputting the non-security updates with the --security switch and because it is no longer printing a summary line the plugin can't parse the number of unmentioned updates because the tool literally isn't returning them.

In this case we probably need to make a choice to perhaps not return any mention of non-security updates because that mode of the system command doesn't give us the info we need.

You can work around the issue by running this plugin twice in 2 different checks - once in default mode which will use yum --security and once for --all updates.

from nagios-plugins.

Thank you for the information @HariSekhon.
I'm currently running both checks as suggested.

from nagios-plugins.