PostgreSQL exposes object-level permissions through Access Control Lists (ACLs). While the SQL GRANT and REVOKE commands are familiar to most administrators, the internal ACL representation—especially when viewed through psql’s \dp command—can be confusing at first glance. One of the most…
PostgreSQL offers a sophisticated and layered security model that precisely controls how users authenticate and access data. To properly secure a PostgreSQL cluster, it is critical to understand the difference between two often-confused concepts: Although both are required for a…
If you’ve worked with PostgreSQL long enough, you’ve probably seen something like this: And the result looked like: At first glance, $user feels mysterious. Is it a variable? A placeholder? A real schema? Let’s unpack what $user actually means, how…
Red Hat has quietly crossed an important milestone for enterprise Kubernetes users: OpenShift 4.18, 4.19, and 4.20 are now generally available on VMware vSphere Foundation 9 (VVF 9) and VMware Cloud Foundation 9 (VCF 9). If you’re running OpenShift on…
Running databases in the cloud is always a balancing act. You want enough performance to handle production workloads, enough flexibility for growth, and — ideally — a bill that doesn’t spiral out of control. At re:Invent 2025, AWS quietly rolled…
Software management isn’t the most exciting part of an operating system — until it breaks. In Red Hat Enterprise Linux 10.1, Red Hat has rolled out a set of updates to RPM and DNF, the two tools responsible for installing,…
If you’re in IT operations, you know the pain: Your team leans on Red Hat’s Ansible Automation Platform to streamline critical workflows—until a shaky database brings everything to a standstill. Ansible excels at standardizing tasks, scaling across cloud and on-prem…
Linux doesn’t usually suffer from a lack of powerful interfaces. What it sometimes lacks is something far more basic: usable documentation. The Linux kernel’s “new mount API” is a perfect example. Introduced back in 2019 with Linux 5.2, it took…
The next Linux kernel development cycle—expected to become Linux 6.20, or more likely Linux 7.0—is shaping up to deliver a meaningful improvement to io_uring, specifically around how IOPOLL polling is handled. It’s not the kind of change that grabs headlines.…
CachyOS is not a name most people associate with servers. It’s an Arch-based distribution, best known for aggressive performance tuning, gaming-focused optimizations, and squeezing every last bit of speed out of modern CPUs. So when CachyOS quietly revealed plans for…
