Production-Grade Container Orchestration

This page shows how to create a Pod that uses a Secret to pull an image from a private container image registry or repository. There are many private registries in use. This task uses Docker Hub as an example registry. 🛇 This item links to a third party project or product that is not part of Kubernetes itself. More information Before you begin You need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster.

This section is relevant for people adopting a new built-in sidecar containers feature for their workloads. Sidecar container is not a new concept as posted in the blog post. Kubernetes allows running multiple containers in a Pod to implement this concept. However, running a sidecar container as a regular container has a lot of limitations being fixed with the new built-in sidecar containers support. FEATURE STATE: Kubernetes v1.33 [stable] (enabled by default: true) Objectives Understand the need for sidecar containers Be able to troubleshoot issues with the sidecar containers Understand options to universally "inject" sidecar containers to any workload Before you begin You need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster.

This page shows how to perform a rollback on a DaemonSet. Before you begin You need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. If you do not already have a cluster, you can create one by using minikube or you can use one of these Kubernetes playgrounds:

Synopsis Create a config map based on a file, directory, or specified literal value. A single config map may package one or more key/value pairs. When creating a config map based on a file, the key will default to the basename of the file, and the value will default to the file content. If the basename is an invalid key, you may specify an alternate key. When creating a config map based on a directory, each file whose basename is a valid key in the directory will be packaged into the config map.

Caution:kubeadm alpha provides a preview of a set of features made available for gathering feedback from the community. Please try it out and give us feedback! Currently there are no experimental commands under kubeadm alpha. What's next kubeadm init to bootstrap a Kubernetes control-plane node kubeadm join to connect a node to the cluster kubeadm reset to revert any changes made to this host by kubeadm init or kubeadm join

Synopsis Roll back to a previous rollout. kubectl rollout undo (TYPE NAME | TYPE/NAME) [flags] Examples # Roll back to the previous deployment kubectl rollout undo deployment/abc # Roll back to daemonset revision 3 kubectl rollout undo daemonset/abc --to-revision=3 # Roll back to the previous deployment with dry-run kubectl rollout undo --dry-run=server deployment/abc Options --allow-missing-template-keys     Default: true If true, ignore any errors in templates when a field or map key is missing in the template.

FEATURE STATE: Kubernetes v1.22 [stable] (enabled by default: true) Kubernetes supports multiple appliers collaborating to manage the fields of a single object. Server-Side Apply provides an optional mechanism for your cluster's control plane to track changes to an object's fields. At the level of a specific resource, Server-Side Apply records and tracks information about control over the fields of that object. Server-Side Apply helps users and controllers manage their resources through declarative configuration.

Once you connected your Application with Service following steps like those outlined in Connecting Applications with Services, you have a continuously running, replicated application, that is exposed on a network. This tutorial helps you look at the termination flow for Pods and to explore ways to implement graceful connection draining. Termination process for Pods and their endpoints There are often cases when you need to terminate a Pod - be it to upgrade or scale down.

Production-Grade Container Orchestration