𝑼𝒏𝒅𝒆𝒓𝒔𝒕𝒂𝒏𝒅𝒊𝒏𝒈 𝑲𝒖𝒃𝒆𝒓𝒏𝒆𝒕𝒆𝒔 𝑷𝒐𝒅 𝒇𝒂𝒊𝒍𝒖𝒓𝒆𝒔
Pods can have startup and runtime errors. Startup errors include: ✅ ImagePullBackoff✅ ImageInspectError✅ ErrImagePull✅ ErrImageNeverPull✅ RegistryUnavailable✅ InvalidImageName Runtime errors include: 📌 ✅ CrashLoopBackOff✅ RunContainerError✅ KillContainerError✅ VerifyNonRootError✅ RunInitContainerError✅…
What is Pause container in Kubernetes?
The “pause container” is a special, internal container created and managed by Kubernetes within each pod. Its primary purpose is to serve as a placeholder for the…
List of Commands example for working with containerd using ctr
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
List of Commands example for working with crictl
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
What is difference between crictl and ctr
crictl and ctr are both command-line tools for managing containers in Kubernetes. However, they have different purposes and use cases. crictl is a tool for managing containers…
What is Kubernetes Static Pods with example?
Static Pods are a special type of Pod in Kubernetes that are managed directly by the kubelet daemon on a specific node, without the API server observing…
What is Kubernetes Pod disruption budget and Explained with example
A Kubernetes Pod disruption budget (PDB) is a policy that defines the minimum number of pods that must be available at any given time for a particular…
Kubernetes Tutorials: What is Preemption in kubernetes with example
A PriorityClass in Kubernetes is a non-namespaced object that defines a mapping from a priority class name to an integer value of the priority. The higher the…
List of CNI plugins used in kubernetes
Here is a list of some of the most popular CNI plugins used in Kubernetes: Other popular CNI plugins include: Container Network Interface (CNI) is an open…
List of Ingress controllers in Kubernetes
Here is a list of Ingress controllers for Kubernetes: NGINX Ingress Controller: The NGINX Ingress Controller is a widely used and battle-tested solution for managing external access…
Compare the differences between Calico, Flannel, Weave and Cilium
Feature Calico Flannel Weave Cilium Networking model Layer 3 Layer 3 overlay Layer 2 mesh eBPF Performance High Good Good High Scalability High High High High Security…
Dynatrace Tutorials: Define new applications for Real User Monitoring (RUM)
USING Application detection rules Step 1 – Access Web on Dynatrace App Step 2 – Click on “Edit detection Rules” Step 3 – Click on “Add Item”…
System Design Components
System design components are the building blocks that make up a system. They can be hardware, software, or a combination of both. Some common system design components…
Jenkins X Tutorials: Install and Configurations
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
API Gateway Architecture
API gateway architecture is a design pattern that uses an API gateway as a single point of entry for all API requests. The API gateway sits in…
Load Balancers Vs Api Gateway Vs Reverse Proxy
Load balancers, API gateways, and reverse proxies are all important components of web applications. They can be used to improve performance, security, and scalability. Load balancers distribute…
Introduction of Oauth 2.0
OAuth 2.0 is an open standard for authorization. It enables applications to obtain limited access to user accounts on HTTP services, such as Facebook, GitHub, and Google,…
List of Popular Design Pattern
A design pattern is a general reusable solution to a commonly occurring problem in software design. It is not a finished design that can be transformed directly…
Kubernetes in a Nutshell
1+ 4 Kubernetes, also known as K8s, is an open-source container orchestration platform. It automates many of the manual processes involved in deploying, managing, and scaling containerized…
RabbitMQ vs Kafka Vs ActiveMQ
RabbitMQ, Kafka, and ActiveMQ are all popular messaging brokers, but they have different strengths and weaknesses. RabbitMQ is a message queue that is known for its flexibility…
Jira Tutorials: How to create new Issues Types?
Creating new issue types in Jira allows you to customize the types of tasks or work items that your project can track. By defining your own issue…
Jira Tutorials: How to add Custom Field
Adding custom fields in Jira is a powerful way to tailor your Jira projects to your team’s specific needs. Custom fields allow you to capture and track…
Jira Tutorials: Working with Workflow
What is a Jira workflow? A Jira workflow is the path that an issue takes from creation to completion. It is made up of a series of…
List of Popular Projects at Github for Sample Lab and Exercise
ASP.NET eShopOnWeb Sample ASP.NET Core 7.0 reference application, powered by Microsoft, demonstrating a layered application architecture with monolithic deployment model. Download the eBook PDF from docs folder.URL…
Dynatrace Tutorials: Dynatrace Managed Cluster on the AWS Cloud
This Quick Start sets up a highly available, secure AWS environment, and automatically launches a Dynatrace Managed cluster into a new or existing Virtual Private Cloud (VPC)….
Dynatrace Tutorials: How to Generate a Dynatrace API Token
To configure the SL1 system to monitor Dynatrace resources using the DynatracePowerPack, you must firstgenerate a Dynatrace API token.To do so: Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate…
Kubernetes Tutorials: How to modify CHANGE-CAUSE in Deployment revision
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Difference Between snowflake vs databricks
Snowflake and Databricks are two powerful cloud-based platforms, each offering a distinct approach to data processing and analytics. Here’s a comparison highlighting their differences: Rajesh KumarI’m a…
Types of API Testing
There are many different types of API testing, but some of the most common include: In addition to these general types of API testing, there are also…
List of Popular Secret Manager
AWS Secrets Manager AWS Secrets Manager is a managed service that helps you protect and manage secrets used in your applications. Secrets Manager provides a central location…