Client Go Configmap Example, The Metadata and Spec of both Statefulset and Deployment are identical except for their names. watch contains an example showing how to implement a simple and fairly robust watcher using client-go. How does a ConfigMap work? A ConfigMap is a dictionary of key-value pairs that store configuration The Go client uses librdkafka, the C client, internally and exposes it as Go library using cgo. Jul 11, 2023 · I am mounting a ConfigMap volume to a pod using Go k8 cient where template-conf is a file (deployed helm yaml in the namespace) pod. Dec 17, 2025 · func ExtractConfigMapFrom (configMap *corev1. Secrets. The ConfigMap API resource stores configuration data as key-value pairs. Go client for Kubernetes. The ConfigMap affects every VirtualServer and VirtualServerRoute resources. See examples and ConfigMap vs. ConfigMap, fieldManager string, subresource string) (*ConfigMapApplyConfiguration, error) func (b *ConfigMapApplyConfiguration) GetAPIVersion () *string We would like to show you a description here but the site won’t allow us. Note the http client provided takes precedence over the configured transport values. Apr 24, 2025 · This example creates a ConfigMap object named you-first-configmap (as defined in the ConfigMap metadata section) as well as a key named database_addr whose value is 10. 20. Following the example, I am creating the inClusterConfig for the client. However, the fields of those resources allow overriding some ConfigMap keys. Create a ConfigMap ConfigMap – Kubernetes Example with YAML A ConfigMap stores configuration settings that your Kubernetes Pods consume. ConfigMaps ConfigMaps allow you to decouple configuration artifacts from image content to keep containerized applications portable. go, you can add key-value Jan 20, 2024 · Building a client-go controller In the world of Kubernetes, client-go is the official Go library designed for interacting with the Kubernetes API server from your Go programs or applications. Starting with confluent-kafka-go v1. There are four sample directories, each containing a different example: load contains an example showing possibly the simplest method I've yet found for loading a configmap using the configmap. This field is optional. g. Volumes, corev1. 4. ConfigMap, fieldManager string, subresource string) (*ConfigMapApplyConfiguration, error) func (b *ConfigMapApplyConfiguration) GetAPIVersion () *string # For example, if configuring Argo CD with self-hosted Dex, you will need a separate client ID # for the 'localhost' (CLI) client to Dex. 2 Regarding configmap Thanks Ivan, got that. The Kubernetes Retriever will access flags in a Kubernetes ConfigMap via the Kubernetes Go Client. In this tutorial, we’ll explain ConfigMaps and give you the complete example YAML to create and use a ConfigMap. Contribute to kubernetes/client-go development by creating an account on GitHub. Load() method. Dec 17, 2025 · NewForConfigAndClient creates a new CoreV1Client for the given config and http client. Nov 27, 2023 · The ConfigMap concept allow you to decouple configuration artifacts from image content to keep containerized applications portable. dev/k8s. Dec 17, 2025 · Client configuration is typically loaded from kubeconfig files containing server and credential configuration. Feb 3, 2021 · After that I created a Go file (test. The data provides the configurations for system components for the nginx-controller. Jan 20, 2026 · TypeFilter accepts instances of types to check against and returns a function transformer that would only let the call to f through if value is assignable to any one of types of ts. TypeFilter (&config. Volumes = append (pod. You can find more detail in our Ultimate ConfigMap Guide. e. Locally, you set that variable to loca Dec 27, 2022 · This article uses the Kubernetes Go Client to call respective apis that reads the configuration from the K8s ConfigMap, and then create a watcher and subscribe for any updates to the ConfigMap. . 40. In order to overwrite nginx-controller configuration values as seen in config. if we try to take an example of Pod object instead. I want all pods (created by Statefulset and Deployment) refer to these Configmap and Secret in their Env variables. go. 2. Example: F := configmap. For example, the connect-timeout field of the upstream overrides the proxy-connect-timeout ConfigMap key. This retriever is useful when you are using Kubernetes and want to use ConfigMaps to store your configuration files. Another general confusion is whether we need to write methods for other resources like Pods etc. Ingress NGINX Controller for Kubernetes. Here is a code example you can use: The Go client uses librdkafka, the C client, internally and exposes it as Go library using cgo. You could use this configuration if you need your container to connect to a database that is available at the IP address 10. Contribute to kubernetes/ingress-nginx development by creating an account on GitHub. For example, imagine that you are developing an application that you can run on yourown computer (for development) and in the cloud (to handle real traffic). Contribute to ScarletTanager/configmap-watcher-example development by creating an account on GitHub. Dec 14, 2021 · 8 You need to have your Kubernetes client configured with your Kubernetes cluster and then create ConfigMap/Secret struct and call Kubernetes API. Domain # `client-go` Basic Usage (without using Shared Informer) https://pkg. go above) to create a Statefulset and a Deployment. Also, I have created a role and a roleBinding for deployment SA to get, list and watch ConfigMap objects. Volume { Loads the configuration from a Kubernetes ConfigMap. 30. You write the code to look in an environment variable named DATABASE_HOST. Apr 7, 2021 · If you’ve ever worked with the kubernetes API, whether directly by writing your own client library or with the client-go library, you may already know that watchers are not remotely configmap-specific. Several plugins for obtaining credentials from external sources are available, but are not loaded by default. Use a ConfigMap for setting configuration data separately from application code. Below is a step-by-step guide. For example, you can download and run the same container image to spin up containers for the purposes of local development, system test, or running a live end-user workload. 🏷️ Sep 5, 2025 · What is a ConfigMap in Kubernetes? Learn how to create, mount and update them. 0, the librdkafka client is now included in the Go client and no separate installation of librdkafka is required for the supported platforms (Linux (glibc and musl based), and Mac OSX). Spec. func createPod and func deletePod as an use case of informer(). io/client-go@v0. May 10, 2022 · I am trying to create a simple deployment on Kubernetes using client-go. For more information, view the VirtualServer and VirtualServerRoute resources topic. Despite these restrictions, you can manage and update your ConfigMaps effectively using the Go Kubernetes client. Domain {}) (f) The result is a function F (name string, value interface {}) that will call the underlying function f (name, value) iff value is a *config. shqhtb, foige, wxnx, xsvpm, 7sodb, xwjgu, yste, wkv50, z25rs, uufeo,