Red Hat Leftovers

posted by Roy Schestowitz on Dec 22, 2022

• Automate JBoss Web Server deployment with the Red Hat Certified Content Collection for JWS | Red Hat Developer

  According to several sources we queried, more than 33 percent of the world's web servers are running Apache Tomcat, while other sources show that it's 48 percent of application servers. Some of these instances have been containerized over the years, but many still run in the traditional setup of a virtual machine with Linux.

  Red Hat JBoss Web Server (JWS) combines a web server (Apache HTTPD), a servlet engine (Apache Tomcat), and modules for load balancing (mod_jk and mod_cluster). Ansible is an automation engine that provides a suite of tools for managing an enterprise at scale. In this article, we'll show how 1+1 becomes 11 by using Ansible to completely automate the deployment of a JBoss Web Server instance on a Red Hat Enterprise Linux 8 server.

  A prior article covered this subject, but now you can use the Red Hat certified content collection for JBoss Web Server, which has been available since the 5.7 release.

• Why we added restartable sequences support to glibc in RHEL 9 | Red Hat Developer

  Restartable sequences (rseq) are a Linux feature that can maintain per-CPU data structures in userspace without relying on atomic instructions. A restartable sequence is written under the assumption that it runs from beginning to end without the kernel interrupting it and running some other code on that CPU. It can therefore access per-CPU data without further synchronization.

  Restartable refers to the fallback mechanism that kicks in if the kernel has to reschedule execution. In this case, control is transferred to a fallback path, which can retry the execution or use a different algorithm to implement the required functionality. It turns out that this facility is sufficient to implement a variety of algorithms using per-CPU data, especially if combined with an explicit memory barrier system call.

• 5 automation predictions for 2023 from IT leaders

  What’s on the horizon for IT automation in the New Year? In short: Plenty more of it.

  Of course, the longer-form answer to that question includes more nuance and complexity than that. There are real business and technology issues driving the growth of automation through IT stacks and organizations.

  With that in mind, we asked various IT leaders what’s on their minds in terms of automation now and in the year ahead. Automation is, of course, a big sweeping term – and so we’re treating it as such, covering everything from containerization and orchestration to security automation to AI/ML and more.

• Top 7 leadership books for 2023

  Looking to take your leadership skills to the next level in 2023? Having trouble navigating the world of hybrid and remote work? Or are you making a resolution to finally read the stack of books that’s been piling up on your desk? We’ve got you covered with our annual list of leadership must-reads.