Install testing kernels in Fedora
··465 words·3 mins
If you’re on the latest Fedora release, you’re already running lots of modern packages.
Kernel
2018
2015
GRE tunnels with systemd-networkd
··868 words·5 mins
Switching to systemd-networkd for managing your networking interfaces makes things quite a bit simpler over standard networking scripts or NetworkManager.
Stumbling into the world of 4K displays [UPDATED]
··638 words·3 mins
Woot suckered me into buying a 4K display at a fairly decent price and now I have a Samsung U28D590D sitting on my desk at home.
Book Review: Linux Kernel Development
··760 words·4 mins
I picked up a copy of Robert Love’s book, Linux Kernel Development, earlier this year and I’ve worked my way through it over the past several weeks.
Keep old kernels with yum and dnf
··206 words·1 min
When you upgrade packages on Red Hat, CentOS and Fedora systems, the newer package replaces the older package.
Review: Lenovo X1 Carbon 3rd generation and Linux
··852 words·4 mins
After a boatload of challenges with what I thought would be my favorite Linux laptop, the Dell XPS 13 9343, I decided to take the plunge on a new Lenovo X1 Carbon (3rd gen). My late-2013 MacBook Pro Retina (MacbookPro11,1) had plenty of quirks when running Linux and I was eager to find a better platform.
Lessons learned from a kernel bisection
··494 words·3 mins
I’m far from being a kernel developer, but I found myself staring down a [peculiar touchpad problem][2] with my new Dell XPS 13.
2013
Moving from OS X to Linux: Day One
··1418 words·7 mins
The thought of using Linux as a manager in a highly Windows- and Mac-centric corporate environment isn’t something to be taken lightly.
Installing the Xen hypervisor on Fedora 19
··596 words·3 mins
It’s been a little while since I last posted about installing Xen on Fedora, so I figured that Fedora 19’s beta release was as good a time as any to write a new post.
2011
Xen 4.1 on Fedora 15 with Linux 3.0
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If you haven’t noticed already, full Xen dom0 support was added in the Linux 3.
Keep all old kernels when upgrading via yum
··204 words·1 min
Some might call me paranoid, but I get nervous when my package manager automatically removes a kernel.
2010
Tap into your Linux system with SystemTap
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One of the most interesting topics I’ve seen so far during my RHCA training at Rackspace this week is SystemTap.
Keep web servers in sync with DRBD and OCFS2
··535 words·3 mins
The guide to redundant cloud hosting that I wrote recently will need some adjustments as I’ve fallen hard for the performance and reliability of DRBD and OCFS2.
Legacy tty1 and block device support for Xen guests with pvops kernels
··311 words·2 mins
The discussions about the paravirt_ops, or “pvops”, support in upstream kernels at Xen Summit 2010 last month really piqued my interest.
2009
Parse kernel.org changelogs with wget and grep
··108 words·1 min
I try to keep up with the latest kernel update from kernel.
Fedora 11 httpd: alloc_listener: failed to get a socket for (null)
··129 words·1 min
If you use Fedora 11 in a virtualized environment, you may have seen this error recently if you’ve updated to apr-1.
Two great signals: SIGSTOP and SIGCONT
··278 words·2 mins
The best uses I’ve found for the SIGSTOP and SIGCONT signals are times when a process goes haywire, or when a script spawns too many processes at once.
Linux: emergency reboot or shutdown with magic commands
··416 words·2 mins
Most linux distributions use some type of mechanism to gracefully stop daemons and unmount storage volumes during a reboot or shutdown.
Linux: Adjust storage kernel module load order
··528 words·3 mins
I set up a system at home that has two SATA controllers: one is on the motherboard (nvidia chipset), while the other is on a Silicon Image SATA card that has three eSATA ports.
2008
Reducing inode and dentry caches to keep OOM killer at bay
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When it comes to frustrating parts of the Linux kernel, OOM killer takes the cake.
Reduce disk I/O for small reads using memory
··353 words·2 mins
Many applications that are used on a standard server perform quite a few of small writes to the disk (like MySQL or Apache).
Rebuilding the initial ram disk (initrd)
··85 words·1 min
Installing new hardware may mean that new kernel need to be loaded when your server boots up.