There are two basic ways to deploy to Kubernetes: Imperative acts as a command which is active and immediate, whereas declarative is passive, by writing manifest file and using kubectl apply.
The imperative command is the first mode of managing objects, to use CLI for CUD (Create, Update, Delete) objects on Kubernetes cluster without specifying on manifest file ahead of time. They are a blessing for Kubernetes application developers and administrators because they are very easy to remember and handy. According to K8s, it’s like a ‘Swiss Army Knife” of container orchestration and management.
Imperative commands can help in getting tasks done quickly, as well as generating definition file templates easily. It saves a considerable amount of time and prevents human errors.
Networking plays an important role in connecting the components of infrastructure. AWS networking feature works with various types of workloads and provides security, availability, and manageability. Now as most of the IT companies are working on cloud environments for cost reduction, high availability, data security, we are getting some interesting networking features as services. We can manage these quite easily too. Among those services is Elastic Network Interface (ENI) which we get by default when we create an EC2 instance on AWS and can be seen while the instance is being created. It may surprise many of us that the security group is attached to this elastic network interface.
Kubernetes is an open-source container orchestration platform used for running distributed applications and services at scale. Merely knowing the basics of Kubernetes won’t be sufficient enough in order to leverage the many advantages that it offers. It’s important to first understand the complete Kubernetes architecture, its components and how they interact with each other to know how Kubernetes actually works. Let’s take a brief look and explore how the different components of Kubernetes work together.
Nginx is one of the most popular and widely used web servers mostly because of its speed and reliability. Nevertheless, it is paramount to keep track of the performance and availability that would help you to proactively prepare yourself for the worst scenarios like sudden/unexpected hikes in traffic. It will also keep you updated about the current state and health of your application.
This article will guide you on how to get Nginx Web Server metrics and visualize them. The main goal is a quick deployment and configuration using well-known open-source projects like Grafana, Prometheus, and Telegraf.
Prometheus: An open-source, time-series database for event monitoring and alerting managed by the Cloud Native Computing Foundation (CNCF).
Grafana: An Open-source project for analytics software and visualization of the metrics from any database.
Telegraf: An Open-source project, plugin-driven agent to collect and send metrics.