Free online Kubernetes Secret & ConfigMap generator tool. Instantly convert .env files, TLS certificates, and Docker registry credentials into production-ready Kubernetes v1 ConfigMap and Secret manifests with automatic Base64 data encoding, stringData options, and kubectl CLI commands.
Choose between ConfigMap (non-sensitive app settings), Secret Opaque (key-value credentials), Secret TLS (ingress certificates), or Secret Docker Registry (imagePullSecrets). Specify resource name and namespace.
Manually enter key-value configuration rows or click 'Import .env' to paste multi-line environment variable blocks for automated parsing.
For Secrets, select Base64 (data:) for auto-encoded UTF-8 strings or Plaintext (stringData:) mode for human-readable definitions.
Add optional Kubernetes metadata labels and annotations, and optionally toggle 'immutable: true' to lock configuration state in etcd.
Instantly copy or download the generated production-ready .yaml file, or copy the equivalent kubectl create CLI terminal command.
Eliminate manual Base64 string encoding by pasting local .env files to instantly generate production-ready Kubernetes ConfigMap and Secret YAMLs.
Format public SSL certificates (tls.crt) and private keys (tls.key) into structured kubernetes.io/tls secrets for HTTPS ingress termination.
Automatically encode Docker Hub, GitHub Container Registry (GHCR), or AWS ECR credentials into kubernetes.io/dockerconfigjson objects.
Inject immutable: true flags into ConfigMaps and Secrets to prevent accidental configuration drift and cut etcd memory consumption by up to 40%.
Instantly generate matching kubectl create secret generic or kubectl create configmap CLI commands for automated terminal execution and shell scripts.
In modern cloud-native software engineering, decoupling application binary code from runtime configuration settings is a fundamental pillar of the Twelve-Factor App methodology. In Kubernetes, this separation is achieved through two core API primitives: ConfigMaps (kind: ConfigMap) and Secrets (kind: Secret).
Our Kubernetes Secret & ConfigMap Generator provides an interactive, client-side visual environment for composing, parsing, encoding, and validating configuration manifests according to official Kubernetes v1 core API standards.
| Specification Feature | ConfigMap (kind: ConfigMap) | Secret (kind: Secret) |
|---|---|---|
| Primary Purpose | Non-sensitive app properties, feature flags, configuration files (nginx.conf). | Sensitive credentials, API keys, database passwords, TLS certs, SSH keys. |
| Encoding Standard | Plaintext UTF-8 strings (data: or stringData:). | Base64-encoded strings (data:) or Plaintext (stringData:). |
| etcd Storage | Stored unencrypted in etcd by default. | Stored as Base64; can be encrypted at rest via KMS plugins in etcd. |
| Default Permissions | Standard pod read access via RBAC. | Restricted read access via fine-grained RBAC roles. |
| Supported Subtypes | Single general-purpose format. | Opaque, kubernetes.io/tls, kubernetes.io/dockerconfigjson, kubernetes.io/ssh-auth. |
.env File (Input):app-config.yaml):db-credentials.yaml):kubectl CLI Terminal Command:A critical misunderstanding among cloud developers is assuming that Kubernetes Secrets provide native encryption.
A-Z, a-z, 0-9, +, /). Anyone with access to a Secret YAML file or kubectl get secret -o yaml permission can immediately decode the data using echo 'Y2x1c3Rlcl9hZG1pbg==' | base64 --decode.get, list, and watch permissions on secrets resources using Kubernetes Role and ClusterRole definitions.EncryptionConfiguration).SealedSecrets for GitOps-compliant secret management.type: kubernetes.io/tls)Used by Ingress Controllers (NGINX, Traefik, HAProxy, Envoy) to terminate SSL/TLS connections at the edge:
type: kubernetes.io/dockerconfigjson)Required by Kubernetes nodes to pull private images from authentication-protected container registries (GitHub GHCR, Docker Hub, Amazon ECR, Quay):
immutable: true FlagIntroduced in Kubernetes v1.19, setting immutable: true on ConfigMaps or Secrets tells the kubelet that the configuration data will never change during the pod lifecycle.
kubelet from periodically polling the Kubernetes API server to check for configuration changes.Create production Kubernetes Deployment, Service, Ingress, ConfigMap, and Secret manifests.
Visually build and validate production-ready Kubernetes NetworkPolicy manifests to enforce Zero-Trust microservice isolation, pod ingress/egress filtering, and CIDR ipBlock rules.
Calculate Pod CPU & Memory requests/limits, estimate cluster node capacity requirements, determine QoS classes, and generate ResourceQuota & Helm YAML manifests.