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Add RKE command to show available K8s versions

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Catherine Luse
2019-12-30 16:19:11 -07:00
parent f4db93e23e
commit 315cfe10c6
1 changed files with 9 additions and 1 deletions
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content/rke/latest/en/upgrades/_index.md
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@@ -9,12 +9,20 @@ After RKE has deployed Kubernetes, you can upgrade the versions of the component
> **Note:** RKE does not support rollback to previous versions.
To upgrade the Kubernetes version of an RKE provisioned cluster set the `kubernetes_version` string in the `cluster.yml` to the desired version from the list of supported Kubernetes versions for the specific version of RKE. You can find the list of supported Kubernetes versions for a specific version of RKE as documented at [Listing Supported Kubernetes Versions]({{< baseurl >}}/rke/latest/en/config-options/#listing-supported-kubernetes-versions.).
To upgrade the Kubernetes version of an RKE-provisioned cluster, set the `kubernetes_version` string in the `cluster.yml` to the desired version from the list of supported Kubernetes versions for the specific version of RKE:
```yaml
kubernetes_version: "v1.15.5-rancher1-1"
```
You can find the list of supported Kubernetes versions for a specific version of RKE as documented at [Listing Supported Kubernetes Versions]({{< baseurl >}}/rke/latest/en/config-options/#listing-supported-kubernetes-versions.).
To see all of the Kubernetes versions that are available for your version of RKE, run the following command:
```
rke config -l -a
```
> **Note:** In case both `kubernetes_version` and `system_images` are defined, the `system_images` configuration will take precedence over `kubernetes_version`. In addition, if neither `kubernetes_version` nor `system_images` are configured in the `cluster.yml`, RKE will apply the default Kubernetes version for the specific version of RKE used to invoke `rke up`. The default Kubernetes version for each RKE version can be found in [the RKE release notes](https://github.com/rancher/rke/releases/).
Having configured the `kubernetes_version`, ensure that any `system_images` configuration is absent from the `cluster.yml`, and then invoke `rke up` to upgrade Kubernetes.