Kubernetes ConfigMaps
Jump to navigation
Jump to search
↑ https://github.com/kubernetes/enhancements/issues/1412
A ConfigMap
is an API object used to store non-confidential data in key-value pairs. Pods can consume ConfigMaps
as environment variables, command-line arguments, or as configuration files in a volume.
https://kubernetes.io/docs/concepts/configuration/configmap/
Commands
kubectl create configmap <map-name> <data-source>
kubectl get configmaps
kubectl describe configmaps YOUR_CONFIG_MAP_NAME
kubectl edit configmap
helm list Error: configmaps is forbidden: User "system:serviceaccount:kube-system:default" cannot list resource "configmaps" in API group "" in the namespace "kube-system"
Activities
- CKA v1.23: Use ConfigMaps and Secrets to configure applications
- CKA v1.15, CKA v1.21: Understand ConfigMaps
News
- Aug 2020 Kubernetes v1.19 Immutable Secrets and ConfigMaps [1]
Errors
Warning: resource configmaps/kube-root-ca.crt is missing the kubectl.kubernetes.io/last-applied-configuration annotation which is required by kubectl apply. kubectl apply should only be used on resources created declaratively by either kubectl create --save-config or kubectl apply. The missing annotation will be patched automatically. secret/default-token-7z4zd created Error from server (Conflict): error when applying patch: .../... to: Resource: "/v1, Resource=configmaps", GroupVersionKind: "/v1, Kind=ConfigMap" Name: "kube-root-ca.crt", Namespace: "your-namespace" for: "your.yaml": Operation cannot be fulfilled on configmaps "kube-root-ca.crt": the object has been modified; please apply your changes to the latest version and try again
Related terms
- Deployment, Service, Secrets
- Terraform: kubernetes_config_map https://registry.terraform.io/providers/hashicorp/kubernetes/latest/docs/resources/config_map (ConfigMap)
kind: ConfigMap
- Terraform resource: kubernetes_config_map
- Sidecar container
aws-auth
configmap- Kustomize
configMapRef:
data:
Error: kind ConfigMap
Error: UPGRADE FAILED: kind ConfigMap with the name "you-configmap-name" in "your-env" already exists
- Already exists in the cluster
- Kubernetes HostPath volume provider
projected
See also
- AWS IAM Authenticator for Kubernetes:
aws-auth, kubectl edit -n kube-system configmap/aws-auth, eksctl create iamidentitymapping
,mapUsers:, mapRoles:, mapAccounts:
- ConfigMaps:
kubectl [ get | edit | describe | create | delete ] configmaps
,aws-auth
, Kustomize,kind: ConfigMap, ConfigMapRef, envFrom
- Kubectl information commands:
cluster-info
|view
|pods
|nodes
|services
|version
|describe | logs
Advertising: