Monitoring a K8s Cluster with MetricFire

Monitoring a K8s Cluster with MetricFire

Table of Contents


Kubernetes (K8s) is a popular container orchestration solution, but monitoring its performance can be quite challenging. Luckily, there's a solution that makes it easier - MetricFire. It's a cloud-based monitoring and visualization platform that provides comprehensive metrics, alerts, and dashboards for K8s clusters. The platform offers amazing cloud-based monitoring and visualization services that can make the K8s monitoring seamless. MetricFire allows you to monitor the different aspects of your K8s infrastructure, such as nodes, pods, deployments, and services, in real time. This ensures that your cluster remains healthy and performs optimally. In this blog post, we'll learn the features and benefits of MetricFire for Kubernetes monitoring as well as how we can use monitor K8s resources with MetricFire.


Key Takeaways

  1. Kubernetes (K8s) is a widely used container orchestration solution, but monitoring its performance can be challenging. MetricFire is a cloud-based monitoring and visualization platform that simplifies K8s monitoring by providing comprehensive metrics, alerts, and dashboards for K8s clusters.
  2. A Kubernetes cluster is a group of computers that work together to run applications and services.
  3. It is critical to monitor Kubernetes clusters to ensure the health and optimal performance of the cluster, helping to detect and resolve issues preemptively. 
  4. Kubernetes offers scalability, high availability, easy application management, and portability as major benefits. By monitoring a K8s cluster with MetricFire, users can optimize resource utilization, achieve cost savings, and ensure the reliable availability of applications.


What is K8s?

Kubernetes is known as K8s. It is an open-source software for container orchestration. The platform was originally developed by Google and is now managed by CNCF - the Cloud Native Computing Foundation which is a community-driven organization that focuses on advancing cloud-native computing.


K8s Basics

K8s was invented to automate the deployment, scaling, and management of containerized applications. Containerization is a technology that allows developers to package an application with its dependencies into a container. This makes it easier to deploy and run the application across different environments including the developer’s local machine and cloud platforms.


K8s help with container orchestration by providing a layer of abstraction between the application and the underlying infrastructure. It does this by organizing containers into logical units called pods, which are then deployed to nodes, which are the underlying compute resources. Services are then used to expose the pods to the network, making them accessible to other applications.


K8s Key Components

  • Nodes: The underlying compute resources that run the containers. Nodes can be physical or virtual machines.

  • Pods: The smallest deployable units in K8s, consisting of one or more containers that share the same network namespace.

  • Services: An abstraction layer that provides a stable IP address and DNS name for a set of pods.

  • Controllers: Responsible for managing the desired state of K8s objects (e.g., pods, services) and ensuring they are running as expected.


K8s Benefits

Kubernetes, among many, provides four major benefits to users.

  • Scalability: K8s allows applications to scale up or down depending on the demand. Using this, users can optimize resources, which can result in cost savings.

  • High availability: It provides automatic failover and has self-recovering capabilities, which can ensure that applications are always available in the event of node failures or other incidents.

  • Easy application management: K8s can simplify the process of deploying and updating applications. Using this, developers can focus on writing code and reduce efforts on the maintenance side.

  • Portability: K8s allows applications to be deployed across different cloud providers. Developers can use this feature to workloads between environments.


K8s Use Cases

K8s is widely used in various industries and it has many use cases. Some of the most common ones are using it for developing web applications, processing big data, and building machine learning models.

  • Web applications: K8s can be used to deploy and scale web applications.

  • Big data processing: You can use K8s to deploy and manage big data processing frameworks like Apache Spark and Hadoop.

  • Machine learning: Users can utilize K8s to perform training machine learning models and generate inferences.


Some of the well-known companies that use K8s for their services include Spotify, Airbnb, and Lyft.


K8s Ecosystem

K8s has a large and growing ecosystem with a good amount of tools and recent technologies. Some of the most popular ecosystem components are Helm, Prometheus, and Istio.


  • Helm: A package manager for K8s that makes it easy to install and manage applications.

  • Prometheus: A monitoring system for K8s that collects and stores metrics about the cluster and its applications.

  • Istio: A service mesh for K8s that provides advanced networking and security features.


These tools and technologies enhance the functionality of K8s and make it easier to manage complex applications.


What Is a Kubernetes Cluster?

To better understand Kubernetes, we also need to learn the Kubernetes cluster. A Kubernetes cluster is a group of computers that work together to run applications and services. These computers mainly play two roles - master and worker. You can consider the master node as the brain of the cluster. It manages and coordinates all the tasks and workload distribution. The worker nodes, in contrast, are the ones that perform actual work like processing web requests or running databases.


Kubernetes Containers

When you deploy an application to a Kubernetes cluster, it is broken into smaller units called containers. These containers contain all the dependent components to run the application. K8s then schedules and distributes these containers across the worker nodes considering their available resources. This distribution capability is one of the major strengths that Kubernetes has since it enables scaling. For instance, if you experience a sudden spike in traffic to your application, K8s can automatically add more worker nodes to provide more resources.


Kubernetes Cluster Monitoring

Since there are many moving elements in the Kubernetes cluster, it is critical to have visibility into what is happening in the cluster. It is strongly recommended to implement a monitoring mechanism to see how the cluster is performing. Also, that is to detect and diagnose issues preemptively and quickly and ensure your applications and services are running reliably.


One of the key benefits of monitoring a Kubernetes cluster is alerting. When you, for example, have failing nodes or overloaded containers, you can get a notification in real time. This helps you to prevent an issue from getting widespread and causing major damage to the business. Another key benefit is that monitoring can help optimize resource utilization. With a close eye on the cluster's performance metrics, you can identify areas of inefficiency and make adjustments to ensure that resources are used as effectively as possible.


How To Monitor a K8s Cluster with MetricFire

We learned that what a Kubernetes cluster is and why it's important to monitor it. Let's take a look at how we can monitor it using MetricFire. MetricFire is a cloud-based monitoring platform that provides a comprehensive solution for monitoring Kubernetes clusters. It offers a wide range of tools and integrations to help you to monitor all aspects of your cluster's performance. That includes resource utilization, application performance, and container health.


Getting Started

To get started with MetricFire, create an account and start connecting your Kubernetes cluster to the MetricFire platform by signing up for a free trial. MetricFire provides comprehensive guides on how to start, and they offer several different methods for connecting your cluster. You can use the Kubernetes API tokens or Prometheus exporters. Plus, if you have trouble, you can get support from a domain expert from MetricFire, which can further suit your circumstances and speed up troubleshooting.


Collecting Metrics

When your cluster is connected, MetricFire automatically starts collecting metrics and logs from all of your nodes and containers in the cluster. It also provides a powerful dashboard system that allows you to easily create customized dashboards to monitor your cluster components in real time.


MetricFire Key Features for Kubernetes Monitoring

MeticFire offers numerous features for Kubernetes monitoring. One of the powerful features that it provides is alerts and notifications. You can set up specific conditions to trigger alerts and notifications to put more focus on what is critical. For instance, you can create an alert to notify you when a pod is using too much memory or when a node goes offline. You can utilize various channels such as email, SMS, or Slack. 


Another useful feature is MetricFire's integration with popular Kubernetes tools like Helm and kubectl. This integration lets you manage your Kubernetes cluster directly from the MetricFire platform. This makes it easier to deploy new applications, scale your resources, and perform other regular tasks. MetricFire also provides tools for monitoring other parts of your infrastructure that is related to Kubernetes, such as databases, servers, and applications. With a one-spot dashboard, you can access a complete view of your entire infrastructure's performance.



Kubernetes has been widely used by businesses globally thanks to the benefits we learned. Due to the large adoption, industries seek an efficient solution for ensuring the health and performance of their applications and infrastructure, because when it fails, it can have large consequences. However, monitoring a Kubernetes cluster can be a daunting task. Especially, when you have to cover large-scale infrastructure, it can require a lot of resources. 


MetricFire provides a powerful and flexible monitoring solution for Kubernetes clusters. You can monitor all aspects of your cluster's performance and stay on top of any issues with MetricFire. With its comprehensive set of tools and integrations, the platform makes it easy to visualize your metrics, set up alerts and notifications, and manage your cluster directly from the platform. Visit MetricFire today and try a free trial.


Choose hosted solutions from MetricFire and create a secure monitoring environment. Get a MetricFire free trial or book a demo with our experts to learn more about how MetricFire can help you.

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