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What is the best way to upgrade k3s?
The manual upgrade process for K3s involves simply replacing the existing binary with the new one, rather than a complex multi-step procedure.
Automated upgrades for K3s can be managed using Rancher's system-upgrade-controller, a Kubernetes-native approach that handles the entire upgrade process.
The system-upgrade-controller replaces the K3s binary and kills the old process, allowing the supervisor to restart K3s with the new version.
K3s upgrade plans using the system-upgrade-controller will refuse to downgrade K3s, ensuring the cluster is always upgraded to a newer version.
Upgrading K3s manually involves downloading the desired binary, stopping the old process, and launching the new binary - a straightforward three-step process.
Automated K3s upgrades leveraging the system-upgrade-controller can be configured using custom resource definitions (CRDs) and a controller to handle the entire workflow.
The system-upgrade-controller is responsible for orchestrating the K3s binary replacement and restarting the cluster with the new version.
Upgrading a K3s cluster can be done in a Kubernetes-native way using the system-upgrade-controller, without the need for complex scripting or manual intervention.
Rancher's integration with K3s enables seamless upgrades of K3s clusters, with the ability to choose from available versions and initiate the upgrade process.
When upgrading a K3s cluster, the system-upgrade-controller ensures that the cluster is never downgraded, providing a safeguard against accidental regressions.
The system-upgrade-controller can be used as a basis for upgrading K3s clusters through third-party Infrastructure-as-Code tools like Terraform.
Upgrading K3s using the system-upgrade-controller is a Kubernetes-native approach, leveraging the platform's built-in capabilities to handle the upgrade process.
The system-upgrade-controller's handling of the K3s binary replacement and process restart ensures a smooth and reliable upgrade experience.
Rancher's support for K3s clusters includes the ability to easily upgrade them, simplifying the management of the Kubernetes distribution.
The system-upgrade-controller's use of custom resource definitions (CRDs) allows for a declarative and Kubernetes-native approach to managing K3s upgrades.
Upgrading K3s manually or using the system-upgrade-controller can be done without the need for complex scripting or significant downtime.
The system-upgrade-controller's handling of the K3s binary replacement process ensures that the upgrade is performed in a controlled and reliable manner.
Rancher's integration with K3s provides a user-friendly interface for managing K3s clusters, including the ability to initiate upgrades.
The system-upgrade-controller's ability to refuse downgrade attempts helps maintain the stability and integrity of the K3s cluster.
Upgrading K3s using the system-upgrade-controller is a Kubernetes-native approach that leverages the platform's built-in features to streamline the upgrade process.
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