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1. Container Management (Lifecycle) CommandPurposeExample docker psList running containers.docker ps -a (to see all containers, including those that exited with errors). docker runCreate and start a container.docker run -d --name web nginx (r...
1. System Observability & Performance CommandPurposeReal-World SRE Example top / htopProcess monitoring.htop (to visually identify which CPU core is pinned at 100%). uptimeSystem load average.uptime (to check if the load average exceeds the n...
Automate to scale, not just to survive In the world of Site Reliability Engineering (SRE), not all automation is created equal. There is a silent enemy that consumes engineer’s time, stalls innovation, and drains operational budgets: Toil. If your da...
In infrastructure, you don't guess—you verify. Whether you're debugging a Kubernetes CNI or a cloud-native database, knowing the underlying protocol is the key to faster troubleshooting. Here is a cheat sheet of the 25 most important protocols and th...
The Incident Doesn't End at the "Fix" In the daily life of an SRE, the first reaction to a downtime is the "Quick Fix": restarting a pod, scaling a node, or triggering a rollback. However, an incident isn’t truly closed when the service returns to no...
In SRE (Site Reliability Engineering), time is not just a number; it is the core resource that determines whether we meet or breach our SLO (Service Level Objective). To manage incidents professionally, we must deconstruct the timeline into specific ...
In the world of infrastructure, we often obsess over whether a server is "alive" (ping). But a business doesn't care about a ping; it cares about the user experience. To understand this, let's step away from the data center for a moment and imagine w...
In the world of Cloud Engineering, security is not an afterthought; it’s a foundation. When hosting a portfolio or a home lab, the old-school method of Port Forwarding is a major security risk. It exposes your home IP and leaves your network vulnerab...
When I decided to host my personal brand site, https://www.UpToDeploy.com, I faced a classic dilemma: pay for a VPS or use the hardware I already own. I chose my Raspberry Pi, but as someone focused on Security and Reliability, simply opening ports o...
