Using Skopeo to work with Container Images in a dockerless world

Skopeo is one of the specialized tool that performs various operations on container images and image repositories.

Skopeo can perform operations which consist of:

  • Copying an image from and to various storage mechanisms. For example you can copy images from one registry to another, without requiring privilege.
  • Inspecting a remote image showing its properties including its layers, without requiring you to pull the image to the host.
  • Deleting an image from an image repository.
  • Syncing an external image repository to an internal registry for air-gapped (aka offline) deployments.
  • When required by the repository, skopeo can pass the appropriate credentials and certificates for authentication.
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Get a grip on searching file contents with grep

Who doesn’t have to search files for specific content in them. At some point, when working with computers, you would like to find files containing specific text/data/string/content/information or whatever term you use. Linux users have always boasted of being able to use grep utility. Windows users have relied on finding files using easy user interface and Select-String cmdlet. With WSL2, you can use traditional linux utilities to assist with your work on Windows OS as well. Let’s see the few variants of grep to help us searching the information that we seek.

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Working with pods with podman generate and podman play

Podman pods are a way to manage group of application containers together as one pod. It is similar in that way to Kubernetes pods. While you may add many containers as you need with a pod, it would be easier if you can export and import pod manifests entirely. This would allow you to easily create pod with requisite containers rather than running a bunch of commands. You can also use generated manifest to create kubernetes pods. podman generate is a way to generate pod definition manifest yaml format. Similarly, podman play is to import pod definition and spin up a pod for you.

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Error Handling Improvements in PowerShell 7

PowerShell 7 has made some improvements in the way error handling and made it more useful. This includes changes in the default error view, new error action preference and introduction of new cmdlet, Get-Error as well.

Changes in the Error View

A new view called $ConciseView has been created to improve the readability of the errors. This generates a single line error. Before PowerShell 7, the default view used to be $NormalView, which used to generate multi-line error and enhanced view. We can view the current default by using variable $errorview:

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Auto Update Container Images for Kubernetes workloads with Argo CD Image Updater

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. It follows the GitOps pattern of using git repositories as the source of truth for defining the desired application state. With ArgoCD, application deployments can be automated and updates to application can be made at the simple git commit events without the need of any complicated Continuous Integration and/or Deployment Pipelines.

This is our sixth post in the series of blog post on deploying and managing application with Kubernetes and Argo CD. You can find the series index here.

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Deploy Application with Kustomize Manifests on Kubernetes Clusters with Argo CD

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. It follows the GitOps pattern of using git repositories as the source of truth for defining the desired application state. With ArgoCD, application deployments can be automated and updates to application can be made at the simple git commit events without the need of any complicated Continuous Integration and/or Deployment Pipelines.

This is our fifth post in the series of blog post on deploying and managing application with Kubernetes and Argo CD. You can find the series index here.

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Deploy Helm Charts on Kubernetes Clusters with Argo CD

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. It follows the GitOps pattern of using git repositories as the source of truth for defining the desired application state. With ArgoCD, application deployments can be automated and updates to application can be made at the simple git commit events without the need of any complicated Continuous Integration and/or Deployment Pipelines.

This is our fourth post in the series of blog post on deploying and managing application with Kubernetes and Argo CD. You can find the series index here.

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Control Resource Deployment and Lifecycle on Kubernetes with Sync Options in Argo CD

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. It follows the GitOps pattern of using git repositories as the source of truth for defining the desired application state. With ArgoCD, application deployments can be automated and updates to application can be made at the simple git commit events without the need of any complicated Continuous Integration and/or Deployment Pipelines.

This is our third post in the series of blog post on deploying and managing application with Kubernetes and Argo CD. In the first two posts, we discussed how to install and setup Argo CD, how to deploy application, view and manage application health and manage application lifecycle. You can find the series index here.

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