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Overview
The consul-k8s-control-plane binary includes first-class integrations between Consul and
Kubernetes. The project encapsulates multiple use cases such as syncing
services, injecting Connect sidecars, and more.
The Kubernetes integrations with Consul are
documented directly on the Consul website.
This README will present a basic overview of use cases and installing the Helm charts, but for full documentation please reference the Consul website.
This project is versioned separately from Consul. Supported Consul versions
for each feature will be noted below. By versioning this project separately,
we can iterate on Kubernetes integrations more quickly and release new versions
without forcing Consul users to do a full Consul upgrade.
⚠️Please note: We take Consul's security and our users' trust very seriously. If
you believe you have found a security issue in Consul K8s, please responsibly disclose
by contacting us at [email protected].
Features
Consul Service Mesh (Connect):
Run Consul Service Mesh (aka Consul Connect) on Kubernetes. This feature
injects Envoy sidecars and registers your Pods with Consul.
Catalog Sync:
Sync Consul services into first-class Kubernetes services and vice versa.
This enables Kubernetes to easily access external services and for
non-Kubernetes nodes to easily discover and access Kubernetes services.
Installation
consul-k8s is distributed in multiple forms:
The recommended installation method is the official
Consul Helm chart. This will
automatically configure the Consul and Kubernetes integration to run within
an existing Kubernetes cluster.
Consul K8s CLI, distributed as consul-k8s, can be used to install and uninstall Consul Kubernetes. See the Consul K8s CLI Reference for more details on usage.
Raw binaries are available in the HashiCorp releases directory.
These can be used to run consul-k8s directly or build custom packages.
Helm
Within the 'charts/consul' directory is the official HashiCorp Helm chart for installing
and configuring Consul on Kubernetes. This chart supports multiple use
cases of Consul on Kubernetes, depending on the values provided.
For full documentation on this Helm chart along with all the ways you can
use Consul with Kubernetes, please see the
Consul and Kubernetes documentation.
Prerequisites
Helm 3.2+ (Helm 2 is not supported)
Kubernetes 1.19+ - This is the earliest version of Kubernetes tested.
It is possible that this chart works with earlier versions, but it is
untested.
Usage
Detailed installation instructions for Consul on Kubernetes are found here.
Ensure you have access to the Consul Helm chart and you see the latest chart version listed. If you have previously added the
HashiCorp Helm repository, run helm repo update.
helm search repo hashicorp/consul
Now you're ready to install Consul! To install Consul with the default configuration using Helm 3.2 run the following command below.
This will create a consul Kubernetes namespace if not already present, and install Consul on the dedicated namespace.
helm install consul hashicorp/consul --set global.name=consul --create-namespace -n consul
Please see the many options supported in the values.yaml
file. These are also fully documented directly on the
Consul website.
Tutorials
You can find examples and complete tutorials on how to deploy Consul on
Kubernetes using Helm on the HashiCorp Learn website.
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