Switching to systemd-networkd for managing your networking interfaces makes things quite a bit simpler over standard networking scripts or NetworkManager.
I’ve decided to start a series of posts called “Chronicles of SELinux” where I hope to educate more users on how to handle SELinux denials with finesse rather than simply disabling it entirely.
I talked a bit about systemd’s network device name in my earlier post about systemd-networkd and bonding and I received some questions about how systemd rolls through the possible names of network devices to choose the final name.
My SANS classmates were learning how to set and recognize file permissions on a Linux server and we realized it would be helpful to display the octal value of the permissions next to the normal rwx display.
Most of my websites run on a pair of Supermicro servers that I purchased from Silicon Mechanics (and I can’t say enough good things about them and their servers).
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.
I’ve converted one of my KVM hypervisors from CentOS 6 to Fedora 18 and now comes the task of migrating my virtual machines off of my single remaining CentOS 6 hypervisor.
Changing my ssh port from the default port (22) has been one of my standard processes for quite some time when I build new servers or virtual machines.
As promised in my earlier post entitled Kerberos for haters, I’ve assembled the simplest possible guide to get Kerberos up an running on two CentOS 5 servers.
Although Citrix recommends against using software RAID with XenServer due to performance issues, I’ve had some pretty awful experiences with hardware RAID cards over the last few years.
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.
In the event that your system is running out of file descriptors, or you simply want to know what your users are doing, you can review their count of open files by running this command:
When you find yourself in a pinch, and you don’t know the limits of a certain Red Hat Enterprise Linux version, you can find this information in one place.
Making Java keystores at the same time as you create a CSR and key is pretty easy, but if you have a pre-made private key that you want to throw into a keystore, it can be difficult.
If you find that /dev/null is no longer a block device, and it causes issues during init on Red Hat boxes, you will need to follow these steps to return things to normal:
If you find that memory limits differ between root and other users when PHP scripts are run from the command line, there may be an issue with your php.