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Questions tagged [linux-kernel]

The Linux kernel is the operating system kernel used by the Linux family of Unix-like operating systems. It is one of the most prominent examples of free and open source software.

The Linux kernel is the operating system kernel used by the Linux family of Unix-like operating systems. It is one of the most prominent examples of free and open source software.

The Linux kernel is released under the GNU General Public License version 2 (GPLv2) (plus some firmware images with various non-free licenses[citation needed]), and is developed by contributors worldwide. Day-to-day development discussions take place on the Linux kernel mailing list.

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Size of modules within initrd

I am currently trying to manually replace the kernel within ubuntu-core on an embedded device with a custom kernel. However when I try to update the initrd my initrd becomes much bigger. Here is what I did: Extract the initrd that was shipped with…
LiKao
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Nonstandard kernel on CentOS

CentOS/RH is very widely supported as a server distro, but it mounts a somewhat older kernels. For example now it runs kernel 2.6, while 3.6 is already out. I found several tutorials about upgrading the kernel, anyhow my question is: what are the…
Mascarpone
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yum security update - message indicating kernel version not up to date

Running yum --security check-update returns this message: Security: kernel-3.x.x-x.63 is an installed security update Security: kernel-3.x.x-x.29 is the currently running version I already ran the yum security update on the kernel, but it looks…
JMC
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CentOS: Prevent the kernel from updating?

I have installed a non-rpm custom kernel. I have a cron job which does yum -y update in the background. Is it sufficent to remove the kernel packages to prevent them from being updated?
dongle26
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Is it possible to disable or tune filesystem cache sharing for OpenVZ?

For OpenVZ, an implementation of container-based virtualization, it seems that host and all guests are sharing the filesystem cache. This sounds paradoxical when talking about virtualization, but this is actually a feature of OpenVZ. It makes sense…
gertvdijk
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How do I correct the kernel version loaded by Grub2 in Ubuntu 12.04

I have a linux vps running Ubuntu 12.04 and when I run uname-r it replies: paul@webforms:~$ uname -r 2.6.32.33-kvm-i386-20111128-dirty paul@webforms:~$ sudo grub-install -v grub-install (GRUB) 1.99-21ubuntu3.1 if I run update-grub I…
Paul D'Ambra
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kernel + libc6 issue upgrading to squeeze

I used to run Debian testing, and I haven't upgraded or dist-upgraded for about 2 years. Yesterday I made the mistake of trying that... it didn't work (I don't remember the exact error messages), so I tried squeeze instead. Well, packages were…
einpoklum
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NFS4: rpc.idmapd or nfs.idmap upcall?

https://www.kernel.org/doc/Documentation/filesystems/nfs/idmapper.txt states: The file /etc/request-key.conf will need to be modified so /sbin/request-key can direct the upcall. The following line should be added: #OP TYPE DESCRIPTION…
SystemParadox
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linux sever interfaces automation

I am using a CentOS server which has about 6 active interfaces with different IPs, I'd want to automatically bring down all the interfaces when any one of the 6 interfaces is down. Is there a way this can be done? I've been trying to find a method…
Ralf
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Making directories visible only by owners

I am in the process of creating a secured shared hosting and, between the hosting features, I want to give SSH access. I've already chrooted the users via SSH, FTP and PHP (using PHP-FPM), and would like to improve the hosting's security even…
Alessio Periloso
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Compiling linux kernel - `make install` asks for LILO. Now what?

So I am following this guide to compile my custom kernel - http://library.linode.com/linode-platform/custom-instances/pv-grub-custom-compiled-kernel#sph_compile-and-install-the-kernel So far so good, but I hit a little road block with make install. …
Calvin Cheng
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Kernel panic on Linux Red Hat server

Linux server has been running fine, no updates installed recently, but out of the blue this morning the server stopped responding. I went to check it and it was saying there is a problem with the filesystem, and stated 'you should run fsck…
HathawayP
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Does Linux support IPsec service out of the box?

As per subject. I have heard of default IPsec support on later versions of Linux kernel (without need to recompile or install special packages) but maybe it's a rumour? Interested in both VPN connectivity scenarios: - Server-to-Server (e.g.…
Alex
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Debian squeeze kernel backports upgrade - moving forward?

It was suggested to update my Debian Squeeze kernel to something more recent. We chose 2.6.38 and used Debian Backports to install linux-image-2.6.38-bpo.2-amd64 following these instructions summarized below. nano /etc/apt/sources.list Add the…
jimg
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Need rpcsec_gss_krb5 and Linux kernel 2.6.35+ on EC2

I am trying to do Kerberos-auth:d NFS4 on EC2. In order to do this, it seems one wants a kernel at least 2.6.35 in order to get decent encryption algos. The distro I could find that provides this is Ubuntu/Natty, which has 2.6.38. However, the…
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