Load balancing architecture is to increase the availability and reliability of applications, so if a certain number of clients request some…

To benchmark persistent disk performance, use FIO instead of other disk benchmarking tools such as dd. By default, dd uses a very low I/O queue depth, so it is difficult to ensure that the benchmark is generating a sufficient number of I/Os and bytes to accurately test disk performance. To…

In this article will cover to push/save all docker images from local machine and save to remote machine or private registry Example 1: Save all Docker images and load to another machine Save all docker images in local machine docker save $(docker images --format '{{.Repository}}:{{.Tag}}') -o allinone.tar scp it to…

This story describes how you can easily set up a local or externally accessible Docker registry for hosting your own built Docker images. First method (Basic Registry) show registry configurations that are only appropriate for testing (also explain gotchas in this basic registry configuration). A production-ready registry must be protected…

Rancher is a complete software stack for teams adopting containers. It addresses the operational and security challenges of managing multiple Kubernetes clusters, while providing DevOps teams with integrated tools for running containerized workloads. Prerequisites: 1. Private Docker Registry: To Push rancher images to that registry from machine-1. (Ref: https://vineetcic.medium.com/create-own-docker-registry-with-gui-using-harbor-9e63f38f8753) 2. A machine-1…

The Tuleap Community Edition docker image allows you to test Tuleap quickly by skipping the installation and customization part. It gives you a fully working Tuleap in minutes with everything preconfigured with sensible defaults. Prerequisites: The following sections assume that you are going to run the Tuleap container as the only…

If you are familiar with Amazon EC2 and EBS volume, you might have experiences modifying the size of EBS volume. AWS provide an easy way to increase the size of your EBS volume. In fact, we could increase it without detaching the volume or restarting the instance. …

Rsyslog is a powerful, secure and high-performance log processing system which accepts data from different types of source (systems/applications) and outputs it into multiple formats It has evolved from a regular syslog daemon to a fully-featured, enterprise level logging system. It is designed in a client/server model, therefore it can…

1. Copy Data From a Pod to Local Machine: kubectl cp <some-namespace>/<some-pod>:/tmp/foo /tmp/bar and just vice versa i.e. from local machine to POD kubectl cp /tmp/bar <some-namespace>/<some-pod>:/tmp/foo 2. Display Pod Details Only three Columns (NodeName, POD name, Name space) kubectl get pods --all-namespaces --output ‘jsonpath={range .items[*]}{.spec.nodeName}{“ “}{.metadata.namespace}{“\t “}{.metadata.name}{“\n”}{end}’