![]() ![]() Set Kubernetes environment variables using the Linux CLI When deployed, this pod is configured with the variable STORAGE_DIR set to the value /local_storage. The second way to set environment variables in Kubernetes is to include the variable definition in the YAML file used to create a pod, as in the following example. Set Kubernetes environment variables with YAML kubectl set env deployment/example-deployment STORAGE_DIR=/local_storage 2. The first option is to define Kubernetes environment variables using the set env command in kubectl, a command-line tool for controlling Kubernetes clusters.įor example, the following code sets or updates the value of the environment variable STORAGE_DIR to /local_storage for a deployment named example-deployment. Set Kubernetes environment variables with kubectl ![]() There are three main ways to define and update environment variables in Kubernetes: kubectl, a YAML file or the Linux CLI. How to set environment variables in Kubernetes The following environment variable, for example, defines the key that an application could use to find a username's value. env:Įnvironment variables can also reference secrets that an application requires, such as usernames and passwords. ![]() What are environment variables in Kubernetes?Ī Kubernetes environment variable is a dynamic value that configures some aspect of the environment in which a Kubernetes-based application runs.įor example, to use an environment variable to define the IP address or network port for a containerized application, include a section like the following when creating a Kubernetes pod. In this walkthrough, learn how to set environment variables in Kubernetes via the command line or a YAML file, and compare the pros and cons of using environment variables to manage Kubernetes configurations and secrets. These configurations determine how the containers or Kubernetes pods that host the application will run and help them access secrets. For many applications, environment variables play a key role in defining configuration data. ![]()
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