SSH Client improvements

SSH Client improvements

This article is going to concentrate several SSH client related topics and optimisations I have implemented. Amongst are: SSH client modular configuration Initially, the configuration for SSH client should be present (per-user) in the user’s home directory, under .ssh/config. I believe that this configuration file is not modular enough, and when you want to add/edit/remove…

Oracle Linux 8 RPM installation broken
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Oracle Linux 8 RPM installation broken

I got the following error message when attempting to upgrade RPM packages: Oracle Linux 8 introduced a bug with a package called rpm-plugin-selinux (details: rpm-plugin-selinux-4.14.3-28.0.1.el8_9) which prevents RPM packages from being installed correctly, either by dnf/yum or manually. The solution, as shown in this Oracle community forum is to downgrade the package rpm-plugin-selinux like that:…

Replace Old NTP Commands With “chronyc” on a Modern Linux

Replace Old NTP Commands With “chronyc” on a Modern Linux

With the migration of Enterprise Linux to ‘chronyd’ ntp clock toolset, some of the more common commands were deprecated, and do not exist anymore. In this article I will go over the most common uses I have in the context of NTP, and how to address them using ‘chronyc’ command line. Perform ‘ntpdate’ command A…

Gain Control of the Storage Controller Loading Order
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Gain Control of the Storage Controller Loading Order

I encountered an intriguing issue recently after replacing my motherboard. Some block devices underwent a change in their order, causing /dev/sda to appear as /dev/sdy due to a modification in the PCI-e enumeration. This change, though seemingly insignificant, led to an unexpected consequence. Since the disk was subject to a specific mdadm filter, its altered…