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Billy Tat
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title: Choosing a Rancher Version
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weight: 1
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---
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import Tabs from '@theme/Tabs';
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import TabItem from '@theme/TabItem';
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This section describes how to choose a Rancher version.
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For a high-availability installation of Rancher, which is recommended for production, the Rancher server is installed using a **Helm chart** on a Kubernetes cluster. Refer to the [Helm version requirements]({{<baseurl>}}/rancher/v2.6/en/installation/resources/helm-version) to choose a version of Helm to install Rancher.
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For Docker installations of Rancher, which is used for development and testing, you will install Rancher as a **Docker image**.
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<Tabs>
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<TabItem value="Helm Charts">
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When installing, upgrading, or rolling back Rancher Server when it is [installed on a Kubernetes cluster]({{<baseurl>}}/rancher/v2.6/en/installation/install-rancher-on-k8s/), Rancher server is installed using a Helm chart on a Kubernetes cluster. Therefore, as you prepare to install or upgrade a high availability Rancher configuration, you must add a Helm chart repository that contains the charts for installing Rancher.
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Refer to the [Helm version requirements]({{<baseurl>}}/rancher/v2.6/en/installation/resources/helm-version) to choose a version of Helm to install Rancher.
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### Helm Chart Repositories
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Rancher provides several different Helm chart repositories to choose from. We align our latest and stable Helm chart repositories with the Docker tags that are used for a Docker installation. Therefore, the `rancher-latest` repository will contain charts for all the Rancher versions that have been tagged as `rancher/rancher:latest`. When a Rancher version has been promoted to the `rancher/rancher:stable`, it will get added to the `rancher-stable` repository.
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| Type | Command to Add the Repo | Description of the Repo |
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| -------------- | ------------ | ----------------- |
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| rancher-latest | `helm repo add rancher-latest https://releases.rancher.com/server-charts/latest` | Adds a repository of Helm charts for the latest versions of Rancher. We recommend using this repo for testing out new Rancher builds. |
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| rancher-stable | `helm repo add rancher-stable https://releases.rancher.com/server-charts/stable` | Adds a repository of Helm charts for older, stable versions of Rancher. We recommend using this repo for production environments. |
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| rancher-alpha | `helm repo add rancher-alpha https://releases.rancher.com/server-charts/alpha` | Adds a repository of Helm charts for alpha versions of Rancher for previewing upcoming releases. These releases are discouraged in production environments. Upgrades _to_ or _from_ charts in the rancher-alpha repository to any other chart, regardless or repository, aren't supported. |
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<br/>
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Instructions on when to select these repos are available below in [Switching to a Different Helm Chart Repository](#switching-to-a-different-helm-chart-repository).
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> **Note:** All charts in the `rancher-stable` repository will correspond with any Rancher version tagged as `stable`.
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### Helm Chart Versions
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Rancher Helm chart versions match the Rancher version (i.e `appVersion`). Once you've added the repo you can search it to show available versions with the following command:<br/>
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`helm search repo --versions`
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If you have several repos you can specify the repo name, ie. `helm search repo rancher-stable/rancher --versions` <br/>
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For more information, see https://helm.sh/docs/helm/helm_search_repo/
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To fetch a specific version of your chosen repo, define the `--version` parameter like in the following example:<br/>
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`helm fetch rancher-stable/rancher --version=2.4.8`
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### Switching to a Different Helm Chart Repository
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After installing Rancher, if you want to change which Helm chart repository to install Rancher from, you will need to follow these steps.
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> **Note:** Because the rancher-alpha repository contains only alpha charts, switching between the rancher-alpha repository and the rancher-stable or rancher-latest repository for upgrades is not supported.
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{{< release-channel >}}
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1. List the current Helm chart repositories.
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```plain
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helm repo list
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NAME URL
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stable https://charts.helm.sh/stable
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rancher-<CHART_REPO> https://releases.rancher.com/server-charts/<CHART_REPO>
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```
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2. Remove the existing Helm Chart repository that contains your charts to install Rancher, which will either be `rancher-stable` or `rancher-latest` depending on what you had initially added.
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```plain
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helm repo remove rancher-<CHART_REPO>
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```
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3. Add the Helm chart repository that you want to start installing Rancher from.
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```plain
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helm repo add rancher-<CHART_REPO> https://releases.rancher.com/server-charts/<CHART_REPO>
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```
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4. Continue to follow the steps to [upgrade Rancher]({{<baseurl>}}/rancher/v2.6/en/installation/install-rancher-on-k8s/upgrades) from the new Helm chart repository.
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</TabItem>
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<TabItem value="Docker Images">
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When performing [Docker installs]({{<baseurl>}}/rancher/v2.6/en/installation/other-installation-methods/single-node-docker), upgrades, or rollbacks, you can use _tags_ to install a specific version of Rancher.
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### Server Tags
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Rancher Server is distributed as a Docker image, which have tags attached to them. You can specify this tag when entering the command to deploy Rancher. Remember that if you use a tag without an explicit version (like `latest` or `stable`), you must explicitly pull a new version of that image tag. Otherwise, any image cached on the host will be used.
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| Tag | Description |
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| -------------------------- | ------ |
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| `rancher/rancher:latest` | Our latest development release. These builds are validated through our CI automation framework. These releases are not recommended for production environments. |
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| `rancher/rancher:stable` | Our newest stable release. This tag is recommended for production. |
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| `rancher/rancher:<v2.X.X>` | You can install specific versions of Rancher by using the tag from a previous release. See what's available at DockerHub. |
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> **Notes:**
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>
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> - The `master` tag or any tag with `-rc` or another suffix is meant for the Rancher testing team to validate. You should not use these tags, as these builds are not officially supported.
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> - Want to install an alpha review for preview? Install using one of the alpha tags listed on our [announcements page](https://forums.rancher.com/c/announcements) (e.g., `v2.2.0-alpha1`). Caveat: Alpha releases cannot be upgraded to or from any other release.
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</TabItem>
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</Tabs>
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