![]() ![]() ![]() Kubectl knows where to look for your cluster configuration. ToĪdd the file path to your KUBECONFIG environment variable so that Installing AWS CLI to your home directory in the AWS CloudShell User Guide.ĪWS IAM Authenticator for Kubernetes PrerequisiteĪWS IAM Authenticator for Kubernetes installed on your device. The AWS CLI version installed in the AWS CloudShell may also be several versions behind the latest version. Installing, updating, and uninstalling the AWS CLI and Quick configuration with aws configure in the AWS Command Line Interface User Guide. This namespace will be used as we apply the Helm charts used behind the hood. The KUBENAMESPACE specifies the Kubernetes namespace to target with the deployments. It can be done with kubectl command itself. The KUBECONTEXT specifies the context used for the connection, its provided by the GitLab Agent for Kubernetes. A Context in Kubernetes is used to group access parameters under convenient names in a kubeconfig file. Homebrew for macOS are often several versions behind the latest version of the AWS CLI. The general syntax for kubectl usage is: kubectl command TYPE NAME flags Copy Set Context and Configuration Before using kubectl commands on a Kubernetes cluster, we have to set the configuration and context first. You can check your current version with aws -version | cut -d / -f2 | cut -d ' ' -f1. Version 2.11.3 or later or 1.27.93 or later of the AWS CLI installed and configured on your device or AWS CloudShell. For additional information, see Specifying Credentials & Using AWS Profiles on If you don't specify a profile, then theĭefault profile is used. The start of the env: line, and remove # at See Set up kubectl to use authentication tokens provided by AWS Of the default AWS credential provider chain. Lets start by deploying a new namespace and an example pod so that we have something to work with.The IAM role that you want to perform cluster operations with instead No more logging in and being dumped into the default namespace. Overview of 'kubectl get pod' command: The 'kubectl get pod' command is used to retrieve information about pods running within a Kubernetes cluster. kubectl config get-contexts CURRENT NAME CLUSTER AUTHINFO NAMESPACE minikube minikube minikube default rpi-cluster rpi-cluster admin/rpi-cluster rpi-foo rpi. Remember in the previous post where we talked about namespaces and how we could logically separate our Kubernetes cluster? Now we can use KUBECONFIG and context to set our default namespaces. Retrieving container information for a pod. So a context would include a cluster, a user and a namespace. Lastly, the KUBECONFIG file stores contexts.Ĭontexts group access information under an easily recognizable name. It also stores authentication information such as username/passwords, certificates or tokens. Take note of its name as we will need it in the next steps. oc get pods Note the name of the pod running SQL Server. kubectl get namespaces Look for the namespace that is stuck in the 'Terminating' state. To verify failure and recovery, you can delete the pod with the following steps: List the pod running SQL Server. ![]() Use kubectl get services to verify that the IP address for the new container is the same. For the application of jq, please refer to My jq Cheatsheet. Generally, it is the most powerful method since jq can meet 99 of the scenarios. The KUBECONFIG file contains several things of interest including the cluster information so that kubectl is executing commands on the correct cluster. Use kubectl get pods to verify that a new pod is deployed. kubectl get pod -n namespace -ojson jq ‘filter’. This is why you would’ve needed to add this file to your $PATH variable so that it could be used correctly by the kubectl commands. ![]() Kubectl commands will target the selected context’s cluster using the referenced credentials. Each context is assigned a cluster URL, user account, and namespace. When you use kubectl to execute commands, it gets the correct communication information from this KUBECONFIG file. Kubectl contexts are a way to encapsulate multiple logical cluster connections in a single config file. This is the KUBECONFIG file and it is used to store information about your connection to the Kubernetes cluster. When you first setup your Kubernetes cluster you created a config file likely stored in your $HOME/.kube directory. This might be a good time to introduce Kubernetes KUBECONFIG files and context so you can more easily use all of these different resources. You’ve been working with Kubernetes for a while now and no doubt you have lots of clusters and namespaces to deal with now. ![]()
0 Comments
Leave a Reply. |