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* canonicized rollbacks.md * canonicized troubleshooting.md * canonicized upgrades.md there were two corresponding pages for 2.0-2.4, one for helm 2 and one for helm 3, so i added canonical refs for both * canonicized feature-flags 2.0-2.4 and 2.5 pages were in different folders * corrected url on feature flags
This commit is contained in:
Marty Hernandez Avedon
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---
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title: Rollbacks
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/rollbacks"/>
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</head>
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## Additional Steps for Rollbacks with Rancher v2.6.4+
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Rancher v2.6.4 upgrades the cluster-api module from v0.4.4 to v1.0.2. Version v1.0.2 of the cluster-api, in turn, upgrades the Cluster API's Custom Resource Definitions (CRDs) from `cluster.x-k8s.io/v1alpha4` to `cluster.x-k8s.io/v1beta1`. The CRDs upgrade to v1beta1 causes rollbacks to fail when you attempt to move from Rancher v2.6.4 to any previous version of Rancher v2.6.x. This is because CRDs that use the older apiVersion (v1alpha4) are incompatible with v1beta1.
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title: Troubleshooting the Rancher Server Kubernetes Cluster
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/troubleshooting"/>
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</head>
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This section describes how to troubleshoot an installation of Rancher on a Kubernetes cluster.
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### Relevant Namespaces
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---
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title: Upgrades
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades"/>
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</head>
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The following instructions will guide you through upgrading a Rancher server that was installed on a Kubernetes cluster with Helm. These steps also apply to air-gapped installs with Helm.
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For the instructions to upgrade Rancher installed with Docker, refer to [this page.](../other-installation-methods/rancher-on-a-single-node-with-docker/upgrade-docker-installed-rancher.md)
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title: Feature Flags
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/installation-references/feature-flags"/>
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</head>
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With feature flags, you can try out optional or experimental features, and enable legacy features that are being phased out.
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To learn more about feature values and how to enable them, see [Enabling Experimental Features](../../../pages-for-subheaders/enable-experimental-features.md).
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title: Rollbacks
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/rollbacks"/>
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</head>
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### Rolling Back to Rancher v2.2-v2.4
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For Rancher installed on Kubernetes, follow the procedure detailed here: [Restoring Backups for Kubernetes installs.](../../../how-to-guides/new-user-guides/backup-restore-and-disaster-recovery/restore-rancher-launched-kubernetes-clusters-from-backup.md) Restoring a snapshot of the Rancher Server cluster will revert Rancher to the version and state at the time of the snapshot.
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title: Troubleshooting the Rancher Server Kubernetes Cluster
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/troubleshooting"/>
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</head>
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This section describes how to troubleshoot an installation of Rancher on a Kubernetes cluster.
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### Relevant Namespaces
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title: Upgrading Rancher Installed on Kubernetes with Helm 2
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades"/>
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</head>
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> Helm 3 has been released. If you are using Helm 2, we recommend [migrating to Helm 3](https://helm.sh/blog/migrate-from-helm-v2-to-helm-v3/) because it is simpler to use and more secure than Helm 2.
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>
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> The [current instructions for Upgrading Rancher Installed on Kubernetes](../../../../pages-for-subheaders/upgrades.md) use Helm 3.
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@@ -3,7 +3,7 @@ title: Upgrades
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/air-gapped-upgrades"/>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades"/>
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</head>
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The following instructions will guide you through upgrading a Rancher server that was installed on a Kubernetes cluster with Helm. These steps also apply to air gap installs with Helm.
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title: Feature Flags
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/installation-references/feature-flags"/>
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</head>
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Feature flags were introduced to allow you to try experimental features that are not enabled by default.
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To learn about feature values and how to enable features, refer [here](../../pages-for-subheaders/enable-experimental-features.md).
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title: Rollbacks
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/rollbacks"/>
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</head>
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- [Rolling Back to Rancher v2.5.0+](#rolling-back-to-rancher-v2-5-0)
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- [Rolling Back to Rancher v2.2-v2.4+](#rolling-back-to-rancher-v2-2-v2-4)
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- [Rolling Back to Rancher v2.0-v2.1](#rolling-back-to-rancher-v2-0-v2-1)
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title: Troubleshooting the Rancher Server Kubernetes Cluster
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/troubleshooting"/>
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</head>
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This section describes how to troubleshoot an installation of Rancher on a Kubernetes cluster.
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### Relevant Namespaces
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title: Upgrades
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades"/>
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</head>
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The following instructions will guide you through upgrading a Rancher server that was installed on a Kubernetes cluster with Helm. These steps also apply to air gap installs with Helm.
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For the instructions to upgrade Rancher installed on Kubernetes with RancherD, refer to [this page.](../other-installation-methods/install-rancher-on-linux/upgrade-rancherd.md)
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title: Feature Flags
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/installation-references/feature-flags"/>
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</head>
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With feature flags, you can try out optional or experimental features.
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To learn more about feature values and how to enable them, see [Enabling Experimental Features](../../pages-for-subheaders/enable-experimental-features.md).
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title: Rollbacks
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/rollbacks"/>
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</head>
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## Rolling Back to Rancher v2.5.0+
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To roll back to Rancher v2.5.0+, use the **Rancher Backups** application and restore Rancher from backup.
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title: Troubleshooting the Rancher Server Kubernetes Cluster
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/troubleshooting"/>
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</head>
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This section describes how to troubleshoot an installation of Rancher on a Kubernetes cluster.
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### Relevant Namespaces
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+5
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---
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title: Upgrades
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades"/>
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</head>
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The following instructions will guide you through upgrading a Rancher server that was installed on a Kubernetes cluster with Helm. These steps also apply to air-gapped installs with Helm.
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For the instructions to upgrade Rancher installed with Docker, refer to [this page.](../other-installation-methods/rancher-on-a-single-node-with-docker/upgrade-docker-installed-rancher.md)
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+4
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title: Feature Flags
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/installation-references/feature-flags"/>
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</head>
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With feature flags, you can try out optional or experimental features, and enable legacy features that are being phased out.
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To learn more about feature values and how to enable them, see [Enabling Experimental Features](../../../pages-for-subheaders/enable-experimental-features.md).
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