Option to remove old kernels

robb · February 8, 2016, 12:38pm

We obviously have a different way of helping others. I prefer the polite way.

zamboni · February 8, 2016, 12:41pm

well… english is not my language, but I help everyday people in english… I helped Jim and I’m quite sure I was not unpolite…

moreover, Jim seems grown enough to defend himself.

anyway, as usual, you’re free to think what you want and welcome when you express your thoughts

Jim · February 8, 2016, 1:25pm

I had totally missed this answer, where there’s the right information.

Now I have a doubt… the information is in the dnf.conf or somewhere (cause of SME/NS)?
I’m at work and can’t verify by myself, now

giacomo · February 8, 2016, 1:45pm

The option is inside /etc/yum.conf and it’s called installonly_limit.

Jim · February 9, 2016, 1:42pm

Becuse learning is always the best way to improve our knowlege:

Jim · February 14, 2016, 12:31pm

Did I need to reboot?
Because now I have a bunch of 6 kernel

Jim · February 14, 2016, 7:11pm

Finally to clean to system… I had to install yun-utils

# yum install yum-utils

and clean up

# package-cleanup --oldkernels --count=2

Nas · February 15, 2016, 7:24am

@Jim you can also make a custom template for yum.conf file in order not to delete old kernels by your own.

Jim · February 15, 2016, 11:07am

I’m curious to know why this parameter don’t work…

This e-smith layer… Let’s talk about it

Nas · February 15, 2016, 11:10am

It works!

it Indeed keeps 5 kernels

Jim · February 15, 2016, 11:32am

But I put it at 2…
And NS keep 6 Kernels

Jim

Nas · February 15, 2016, 11:37am

@Jim

cat /etc/yum.conf
installonly_limit=5

[root@host1 etc]# ll /boot | grep -c vmli
5

giacomo · February 15, 2016, 1:19pm

The option doesn’t clean up old kernels on a running system, but it will be used by yum only when a new kernel is installed.

Example:

installonly_limit = 2
you have 5 kernels installed
CentOS releases a new kernel, and you execute yum update
at the end of the process you will have only 2 kernels installed

Jim · February 15, 2016, 1:46pm

When I found this parameter, I was thinking exactly as you describe @giacomo…
But the reality is different, to be clear, see the exact timeline:
- I had 5 kernels, and the installonly_limit = 5 ( before I
changed )
- I change installonly_limit = 2 … And waited ( still with 5
kernels )
- Past thuesday or friday, there’s a kernel update… I expected
to see only 2 kernels, but I found 6 kernels.!!! :OMG:

What’s happened?
Now I had two kernel because I made a manual cleanup.

When there’s an update by the CenterSoftware, the parameter installonly_limit = 2 seem to be ignored…

giacomo · February 15, 2016, 2:04pm

It seems you’re right, from man yum.conf

installonly_limit Number of packages listed in installonlypkgs to keep installed at the same time. Setting to 0 disables this
feature. Default is ’3’. Note that this functionality used to be in the “installonlyn” plugin, where this option was altered via
tokeep. Note that as of version 3.2.24, yum will now look in the yumdb for a installonly attribute on installed packages. If
that attribute is “keep”, then they will never be removed.

Jim · February 15, 2016, 3:59pm

What can be do to improve?

-It’s a bug in the softwarecenter?
-A missing feature?

a plugin that not work as expected?
an e-smith surprise (@nas )?

Nas · February 15, 2016, 4:11pm

installonly_limit=2
I’l try to test this

Jim · March 24, 2016, 5:29pm

Today, there’s a kernel update…
I setup to have only two kernels…
But it seem that’s wrong yet.

Edit What’s happen?

Jim · March 25, 2016, 1:34am

In the yum.comf the installonly_limit=5

There’s something that erase my yum.conf to erame my value.

I would like to know what.
Is there a way to fix this?

giacomo · March 25, 2016, 7:57am

It’ a template.

To create a template custom:

mkdir -p /etc/e-smith/templates-custom/etc/yum.conf/
cp /etc/e-smith/templates/etc/yum.conf/10base /etc/e-smith/templates-custom/etc/yum.conf/

Edit the file and execute:

expand-template /etc/yum.conf