Operations | Monitoring | ITSM | DevOps | Cloud

If you're using a Linux server, you're probably familiar with the term load average/system load. Measuring the load average is critical to understanding how your servers are performing; if overloaded, you need to kill or optimize the processes consuming high amounts of resources, or provide more resources to balance the workload. But how do you determine if your server has sufficient load capacity, and when should you be worried? Let's dive in and find out.

In today’s post, we’ll learn how to build a Rails app that can support multiple subdomains. Let’s assume that we have a gaming website funkygames.co and we want to support multiple subdomains such as app.funkygames.co, api.funkygames.co, and dev.funkygames.co with a single Rails application. We want to ensure that proper authentication is performed for all subdomains and that there are no duplicate routes.

Nearly eight years ago, Cory and I started on a journey to help developers build software quickly and painlessly. As software developers ourselves, we had felt the pain of being afraid to ship and spending late nights tracking down bugs. In 2013, we launched Rollbar into the world so that developers could build software faster, shipping often without fear. These days, lots of people talk about continuous delivery, and nearly all of them focus on automating releases.

The ability to search through individual error events (we call them Notices) has been one of our most requested features. Today we are shipping an updated section to our Errors page that allows you to do exactly that.

Certificates can be difficult to track and opaque to administrators, and if any expire without someone noticing, embarrassing outages can happen. At Grafana Labs we strive to make all things visible and observable; why should certificates be any exception? In this post we will explore an easy way to expose and monitor certificate expirations using Grafana and Prometheus.

Yesterday, we sent out notifications to all our clients that are affected by the Let's Encrypt mass revocation of SSL certificates. In this post, we'll share the details how we found those certificates. Now, the morning after, we're well rested and in good shape to do a proper write-up on the matter.

Over 100 million users across 400,000 organizations use Citrix virtual apps and desktops technologies for accessing different types of business applications. There are many software products for monitoring the availability, performance, and usage of Citrix technologies. Of these, Microsoft SCOM is the most popular.

Pandora FMS and Toshiba met each other on a cold winter morning, they exchanged looks and… This would be a great start to a love story, wouldn’t it? However, the relationship between Pandora FMS and Toshiba has a different nature: teamwork. By now you know Pandora FMS, don’t you? That flexible and complete monitoring software, with which you can monitor all your devices, from networks, servers, UX, IoT, applications or business processes, to virtual environments, etc.

Have you ever looked at your website logs and realized they don’t make sense to you? Maybe your log levels have been abused, and now every log categorizes as “Error.” Or your logs fail to give clear information on what went wrong, or they reveal sensitive information that hackers may harvest. Fixing these problems is possible! Let’s explore how you can write meaningful log messages and use log levels correctly.

Welcome to Stackify’s guide to C# exception handling. Why is this topic so important? In modern languages like C#, “problems” are typically modeled using exceptions. Jeff Atwood (of StackOverflow fame) once called exceptions “the bread and butter of modern programming languages.” That should give you an idea of how important this construct is.