Uh oh, the site’s certificate has expired. How do we generate a new one? Where’s the private key? Which servers need the new cert? What even goes in the cert? If this sounds all too familiar, rest assured you’re not alone. Outages due to expired certs are far too common and it happens to sites of all sizes (one recent example includes Microsoft Teams going down for several hours due to an expired cert). Disruptions like this are entirely preventable with proper monitoring in place.

Over the last 10 years, the landscape that we manage, maintain, and control as operators and developers has changed dramatically. We’ve shifted from monolith to microservices, from bare metal to VMs to containers to function-based computing — and it’s changed how we need to approach monitoring and observability.

In today’s fast-growth, faster-results market, your customers expect your applications to be always available and up-to-date. Meeting that demand often involves migrating to the cloud, which offers increased scalability and flexibility, allowing engineering teams to innovate more quickly and produce the delightful user experiences customers are looking for.

Assets were one of the biggest additions in Sensu Go. How have new and experienced Sensu users reacted to Sensu assets as a workflow? And what's on the roadmap for Sensu contributors?

This is a guest post from Ava Franklin of GoodCore Software. No matter how high your aspirations, you need someone to guide you through the initial steps of your career. For developers who have just started taking up real projects, we have prepared a checklist of best programming practices recommended by software development industry experts.

Because Sensu is a tool made for (and by!) operators, I wanted to share our own favorite tools in the DevOps ecosystem (aside from Sensu, of course!). I surveyed the fine folks who work at Sensu on what their favorite DevOps tools are, and why. And while we don’t always agree on a specific tool (everyone has their own favorite text editor), it’s safe to say that open source is a constant theme. Read on to learn about our tools of choice for editors, programming, storage, IaC, and more.

Oh man, did I get ahead of myself in my last post! I started chatting tools, and I realize now that I really should have been talking more about why I’m using Sensu and Gremlin. But it didn’t occur to me until last year at Monitorama. John Allspaw gave the keynote talk (Taking Human Performance Seriously). While you can watch the talk here, I’ll highlight a few points...

The following is a guest post from Trey Dockendorf of Tailored Automation. He is a maintainer and the top contributor to the Sensu Puppet module. Trey has been developing Puppet modules for 10 years and specializes in system administration for high-performance computing.

A monitoring infrastructure is not much use if you’re not sure if it’s working correctly. In order to ensure its functionality, you may find a need to debug or test specific pieces of this infrastructure. In those cases, a debug handler can be a great tool to have in your Sensu Go toolbox.