The Prometheus community moves so fast that some of the documents I wrote earlier have become outdated. I’ve recently started paying attention to observability again, filling in some of the gaps in my operations knowledge. 1. Terminology Grafana A visualization tool that provides a variety of visualization panels and supports many data sources, including Prometheus, OpenTSDB, MySQL, and others.

1. Kubectl Basic Commands 1.1 Creating Objects 1 2 3 4 5 6 7 8 # Create resources; a remote URL also works kubectl create -f ./my.yaml # Create resources from multiple files kubectl create -f ./my1.yaml -f ./my2.yaml # Create resources using all manifest files in a directory kubectl create -f .

There are many performance tools on the Linux platform, enough to make your head spin, but long-term exploration and experience have shown that the most useful ones are still those time-tested, simple little utilities. Below are the command-line tools collected from system performance expert Brendan D. Gregg’s talk on Linux performance (Linux Performance Tools).