Managed Kubernetes such as AWS EKS come with their own limitations. One such limitation is how many PODs a Worker node can have based on the type of EC2 instance For example, t3.medium can have only 17 pods t3.large can have 35 pods These limitations are there for operational reasons.[...]
Read moreAuthor: Sarav AK
How to Apply Pending Modifications in RDS - AWS | Devops Junction
This short article lets us see how to apply pending modifications to AWS RDS. Sometimes when we modify the RDS database instance for reasons such as Changing the Instance type Changing Parameter Group Scale up the Disk Size allocated and the maximum disk Size Upgrading the DB Version (major/minor) Or[...]
Read moreWhy we need POD in Kubernetes | Devops Junction
In this article let us explore the reasons why we need POD in Kubernetes and why cannot we deploy the container directly to Kubernetes. Before we start with our reasoning, Let us refresh our memory with what is POD POD ( as in a pod of whales or a pod[...]
Read moreKubeNodeUsage -Disk, Memory, CPU Usage viewer Kubernetes | DevopsJunction
Kubernetes Node Usage or KubeNodeUsage is a CLI tool to get the Memory, CPU and Disk Usage of Kubernetes Nodes it is designed in Python and relies on the kubectl installed in your local. No Authentication data are directly handled. You can think of Kube-Node-Usage as a wrapper over kubectl get nodes command Kube-Node-Usage simply execute the kubectl get[...]
Read moreCloudWatch Alarm to Slack via AWS Chatbot - Example | Devops Junction
Monitoring and Observability are crucial elements for Production uptime and site reliability. Whether your infrastructure is serverless, microservices, containerized or traditional monolith you cannot run away from the observability needs. While observability became indispensable, the product you choose for observability defines how far can you go. There are lot of[...]
Read moreHow to enable Cross Account S3 Access - Direct Access or Assume Role
Most of the organizations using AWS as their cloud platform have multiple AWS accounts to isolate NonProd and PROD to the minimum. In some cases, there could be dedicated AWS accounts for each environment like Dev, QA, Stage etc. In such cases, when you want to access a resource (let's[...]
Read moreHow to Create and limit user to a specific Namespace - Kubernetes RBAC | Devops Junction
Kubernetes RBAC is a vast subject and it continuously evolves as I pen down this article. In this article let us see some basics of Kubernetes RBAC and move to our objective How to restrict the access of users or groups to a specific namespace. Kubernetes RBAC is powered by[...]
Read moreAnsible URI module Examples - How to use Ansible URI | Devops Junction
Ansible has become a widely accepted automation platform not just for Infrastructure Automation but for various other use cases Some of them are Web and API automation, Monitoring Automation, Cloud Automation and Infrastructure as a code like Terraform In this article, we are going to see how to use Ansible[...]
Read moreAnsible Wait for URL to respond or Retry - WEB and API | Devops Junction
Ansible is used for various types of Automations and use cases. Web Automation, Web Scraping and API Automation are some of them when it comes to Web or API automation there are a lot of URLs and endpoints Sometimes they respond immediately the first time, and sometimes you have to[...]
Read moreAnsible Playbook to install Tomcat - how-to guide | Devops Junction
In this article, we are going to share the Ansible playbook for tomcat installation. If you are new to Ansible, refer to our introductory article on the Ansible playbook and come back. Now let us move on with our objective. Tomcat, A web application server powered by J2EE and the most[...]
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