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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
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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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@@ -2,6 +2,10 @@
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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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