Munin graph shows 3 Upgradable security packages (red alert) but apt does not install them

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Munin graph shows 3 Upgradable security packages (red alert) but apt does not install them – Managing your servers can streamline the performance of your team by allowing them to complete complex tasks faster. Plus, it can enable them to detect problems early on before they get out of hand and compromise your business. As a result, the risk of experiencing operational setbacks is drastically lower.

But the only way to make the most of your server management is to perform it correctly. And to help you do so, this article will share nine tips on improving your server management and fix some problem about linux, apt, munin, , .

I’m using this munin plugin :

The server is an ubuntu 10.04 up to date.


This is my munin server, which on its own munin graph shows me a red alert on System, its an alert of “3 Security Upgradable Packages”.

But does packages are kept back.

What Should I do to make the alarm disapear?

root@fbmmu01:/home/admmarc# **apt-get update**
Hit lucid Release.gpg
.......[some repos which show no error]
Reading package lists... Done
root@fbmmu01:/home/admmarc# **apt-get upgrade**
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages have been kept back:
  linux-generic linux-headers-generic linux-image-generic
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.


Solution :

Ok, from the munin-exchange plugin page itself, on the comments I found this:

Written by C. Alex Roeber on ‘Oct. 25,
2010, 18:54.

Remember that apt-update will not do
the kernel or a few other security
packages. run apt-get upgrade and it
will tell you which are not being
upgrade. Then run apt-get install on


So I’ve done as it says:

apt-get install linux-generic

And after this:

root@fbmmu01:/home/admmarc# /etc/munin/plugins/apt-ubuntu 
security.value 0
updates.value 0
proposed.value 0
backports.value 0
other.value 0
total.value 0

So, its just becouse kernel packages don’t care about upgrade, they need to be installed.

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