Мабуть, всі користувались операторами в Kubernetes, наприклад – PostgreSQL operator, VictoriaMetircs Operator. Але що там відбувається “під капотом”? Як і до чого застосовуються CustomResourceDefinition (CRD), і що таке, власне “оператор”? І, врешті решт – в чому різниця між “Kubernetes Operator” та “Kubernetes Controller”? В п...| RTFM: Linux, DevOps та системне адміністрування
Perhaps everyone has used operators in Kubernetes, for example, PostgreSQL operator, VictoriaMetrics Operator. But what’s going on under the hood? How and to what are CustomResourceDefinition (CRD) applied, and what is an “operator”? And finally, what is the difference between a Kubernetes Operator and a Kubernetes Controller? In the previous part – Kubernetes: Kubernetes APIs,… Read More » The post Kubernetes: what are the Kubernetes Operator and CustomResourceDefinition first app...| RTFM: Linux, DevOps, and system administration
It’s difficult to describe in one post what thousands of books have been written about in a thousand pages, but today we’ll try to quickly review the basics of how hosts communicate on a network. First, let’s talk about the OSI and TCP/IP models, then about packet structure and connection establishment, and finally, we’ll… Read More » The post TCP/IP: OSI and TCP/IP models, TCP packets, Linux sockets and ports first appeared on RTFM: Linux, DevOps, and system administration.| RTFM: Linux, DevOps, and system administration