Option to remove old kernels

[alefattorini (Alessio Fattorini)]

@Jim

why don’t you talk about this soon?

What are you meaning here? A small training hangout about templates-custom?
If I’m not mistaken @nas can also lend a hand

[EddieA (Eddie Atherton)]

@giacomo

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

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.

Well, that doesn’t seem to be what’s happening.

None of the kernels in my yumdb have the installonly key set, the installonly_limit in /etc/yum.conf is set to 5. But after installing the latest updates today, which included a new kernel, I now have 8 kernels installed in /boot.

Cheers.

[filippo_carletti]

I just checked the first NethServer I’ve installed, running since 3.5 years: there are only 5 kernels in /boot.

-rwxr-xr-x  1 root root 4269008 Oct  5 02:41 /boot/vmlinuz-2.6.32-642.6.1.el6.x86_64
-rwxr-xr-x. 1 root root 4268880 Aug 23 22:04 /boot/vmlinuz-2.6.32-642.4.2.el6.x86_64
-rwxr-xr-x. 1 root root 4265936 Jul 12 20:39 /boot/vmlinuz-2.6.32-642.3.1.el6.x86_64
-rwxr-xr-x. 1 root root 4264432 Jun  1 00:02 /boot/vmlinuz-2.6.32-642.1.1.el6.x86_64
-rwxr-xr-x. 1 root root 4264528 May 10 19:32 /boot/vmlinuz-2.6.32-642.el6.x86_64

[EddieA (Eddie Atherton)]

-rwxr-xr-x. 1 root root 4221232 Dec 15  2015 /boot/vmlinuz-2.6.32-573.12.1.el6.x86_64
-rwxr-xr-x. 1 root root 4221968 Feb  9  2016 /boot/vmlinuz-2.6.32-573.18.1.el6.x86_64
-rwxr-xr-x. 1 root root 4222448 Mar 22  2016 /boot/vmlinuz-2.6.32-573.22.1.el6.x86_64
-rwxr-xr-x. 1 root root 4222832 May  3 18:27 /boot/vmlinuz-2.6.32-573.26.1.el6.x86_64
-rwxr-xr-x. 1 root root 4264432 May 31 15:02 /boot/vmlinuz-2.6.32-642.1.1.el6.x86_64
-rwxr-xr-x  1 root root 4265936 Jul 12 11:39 /boot/vmlinuz-2.6.32-642.3.1.el6.x86_64
-rwxr-xr-x  1 root root 4268880 Aug 23 13:04 /boot/vmlinuz-2.6.32-642.4.2.el6.x86_64
-rwxr-xr-x  1 root root 4269008 Oct  4 17:41 /boot/vmlinuz-2.6.32-642.6.1.el6.x86_64

Cheers.

[flatspin (Ralf Jeckel)]

Just look out of insterest. I’ve installed 9 in total.

In yum.conf is installonly_limit=5. Didn’t change anything from original.

-rwxr-xr-x. 1 root root 4221968 Feb 10 2016 /boot/vmlinuz-2.6.32-573.18.1.el6.x86_64
-rwxr-xr-x. 1 root root 4222448 Mar 23 2016 /boot/vmlinuz-2.6.32-573.22.1.el6.x86_64
-rwxr-xr-x. 1 root root 4222832 May 4 03:27 /boot/vmlinuz-2.6.32-573.26.1.el6.x86_64
-rwxr-xr-x. 1 root root 4220560 Jul 23 2015 /boot/vmlinuz-2.6.32-573.el6.x86_64
-rwxr-xr-x. 1 root root 4264432 Jun 1 00:02 /boot/vmlinuz-2.6.32-642.1.1.el6.x86_64
-rwxr-xr-x 1 root root 4265936 Jul 12 20:39 /boot/vmlinuz-2.6.32-642.3.1.el6.x86_64
-rwxr-xr-x 1 root root 4268880 Aug 23 22:04 /boot/vmlinuz-2.6.32-642.4.2.el6.x86_64
-rwxr-xr-x 1 root root 4269008 Oct 5 02:41 /boot/vmlinuz-2.6.32-642.6.1.el6.x86_64
-rwxr-xr-x. 1 root root 4264528 May 10 19:32 /boot/vmlinuz-2.6.32-642.el6.x86_64

[filippo_carletti]

I checked all my servers and I found only one that has 10 kernels installed.
Now I have to discover what differences it has from the rest.

[flatspin (Ralf Jeckel)]

Just identified my problem I think: virtualbox.

-------- Uninstall Beginning --------
Module: vboxhost
Version: 5.0.20
Kernel: 2.6.32-573.26.1.el6.x86_64 (x86_64)

Status: Before uninstall, this module version was ACTIVE on this kernel.
Removing any linked weak-modules

[Jim]

It’s certainly not VirtualBOX…
My Microserver NethServer instance has 7 old kernel

And my installonly_limit in /etc/yum.conf is set to 2

[filippo_carletti]

And it’s not the presence of weak-updates, I have some systems with weak-updates modules that have 5 kernels.

[filippo_carletti]

@filippo_carletti

I checked all my servers and I found only one that has 10 kernels installed.

I’ve discovered the problem: that lone server had kernel-debug installed, doubling the count of kernels. So it really has 5 kernels installed.
We’re back to start: I can’t reproduce the problem, all servers have 5 kernels installed.

[Jim]

look at this:

who has got more kernels?

[alefattorini (Alessio Fattorini)]

Is it a contest?

[Jim]

Hi,

I’m now with 11 kernels…`

What’s up docs ?

[EddieA (Eddie Atherton)]

Let’s resurrect this zombie thread.

Now running NS7 and this is in /etc/yum.conf:

installonly_limit=5

But, here’s the relevant part of an ls from boot after the last couple of updates:

[root@Nethserver ~]# cd /boot
[root@Nethserver boot]# ls -lrt vmlinuz-*
-rwxr-xr-x. 1 root root 5392080 Nov 22  2016 vmlinuz-3.10.0-514.el7.x86_64
-rwxr-xr-x  1 root root 5392752 Feb 22 19:16 vmlinuz-3.10.0-514.6.2.el7.x86_64
-rwxr-xr-x. 1 root root 5392080 Mar  1 16:56 vmlinuz-0-rescue-13ad7b333d3e4171a17342c53d60c4c0
-rwxr-xr-x  1 root root 5393008 Mar  2 16:15 vmlinuz-3.10.0-514.10.2.el7.x86_64
-rwxr-xr-x  1 root root 5396240 Apr 12 08:15 vmlinuz-3.10.0-514.16.1.el7.x86_64
-rwxr-xr-x  1 root root 5397552 May 25 10:16 vmlinuz-3.10.0-514.21.1.el7.x86_64
-rwxr-xr-x  1 root root 5397520 Jun 20 05:36 vmlinuz-3.10.0-514.21.2.el7.x86_64
-rwxr-xr-x  1 root root 5397328 Jun 29 09:16 vmlinuz-3.10.0-514.26.1.el7.x86_64
-rwxr-xr-x  1 root root 5397008 Jul  4 08:15 vmlinuz-3.10.0-514.26.2.el7.x86_64
[root@Nethserver boot]#

Guess it still isn’t working as designed.

Cheers.

[fasttech]

[root@server9b ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
                   22G   13G  7.8G  62% /
tmpfs                 939M     0  939M   0% /dev/shm
/dev/sda1             504M  465M   14M  98% /boot

I have 18 kernels on this bone default production mail server and now any update attempts from the gui fail.

Removed:
  kernel.x86_64 0:2.6.32-504.el6                kernel.x86_64 0:2.6.32-504.23.4.el6           kernel.x86_64 0:2.6.32-504.30.3.el6
  kernel.x86_64 0:2.6.32-573.7.1.el6            kernel.x86_64 0:2.6.32-573.8.1.el6            kernel.x86_64 0:2.6.32-573.12.1.el6
  kernel.x86_64 0:2.6.32-573.18.1.el6           kernel.x86_64 0:2.6.32-573.22.1.el6           kernel.x86_64 0:2.6.32-573.26.1.el6
  kernel.x86_64 0:2.6.32-642.1.1.el6            kernel.x86_64 0:2.6.32-642.3.1.el6            kernel.x86_64 0:2.6.32-642.4.2.el6
  kernel.x86_64 0:2.6.32-642.6.2.el6            kernel.x86_64 0:2.6.32-642.11.1.el6

Complete!
[root@server9b boot]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
                       22G   11G  9.3G  54% /
tmpfs                 939M     0  939M   0% /dev/shm
/dev/sda1             504M  115M  364M  25% /boot

[Jim]

I think you desserve a new badge for this

[fasttech]

@Jim my next goal is 24, maybe with compression or something.

[rowihei]

Hallo,
some years ago I found this for CentOS:
root#> yum install yum-utils
…
root#> package-cleanup --oldkernels --count=2

–count=[number of kernels to stay]
I created a 2kernel.sh including the last line.

[pike (Michael Kicks)]

Today i installed kernel 3.10.957.10.1; after the update…

rpm -qa kernel
kernel-3.10.0-862.11.6.el7.x86_64
kernel-3.10.0-957.5.1.el7.x86_64
kernel-3.10.0-957.1.3.el7.x86_64
kernel-3.10.0-862.14.4.el7.x86_64
kernel-3.10.0-957.10.1.el7.x86_64
now installed on my ritual-murder box

[danb35 (Dan)]

Current versions of Neth should limit themselves to five installed kernels. It’s probably more than are needed, but there still should be cleanup going on.