(Bug) recover when token expires #337
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When the sveltos-agent runs in the management cluster, it receives the managed cluster's kubeconfig from a Secret. These kubeconfigs can expire (e.g., GKE tokens have a maximum lifespan of 48 hours). Sveltos includes a mechanism to proactively renew these tokens. The SveltosCluster controller can be configured to periodically refresh tokens before they expire, preventing disruptions. However, prior to this change, the sveltos-agent, when deployed in the management cluster, lacked the ability to retrieve an updated kubeconfig. Consequently, upon kubeconfig expiration, the agent encountered numerous authorization errors, effectively ceasing operation. This pull request addresses this issue by implementing a mechanism to detect kubeconfig expiration. Upon detection, the sveltos-agent retrieves a fresh, valid kubeconfig. This triggers a restart of the controller-runtime manager (and all associated controllers) as well as the evaluation manager, ensuring continued operation.
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When the sveltos-agent runs in the management cluster, it receives the managed cluster's kubeconfig from a Secret. These kubeconfigs can expire (e.g., GKE tokens have a maximum lifespan of 48 hours).
Sveltos includes a mechanism to proactively renew these tokens. The SveltosCluster controller can be configured to periodically refresh tokens before they expire, preventing disruptions.
However, prior to this change, the sveltos-agent, when deployed in the management cluster, lacked the ability to retrieve an updated kubeconfig. Consequently, upon kubeconfig expiration, the agent encountered numerous authorization errors, effectively ceasing operation.
This pull request addresses this issue by implementing a mechanism to detect kubeconfig expiration. Upon detection, the sveltos-agent retrieves a fresh, valid kubeconfig. This triggers a restart of the controller-runtime manager (and all associated controllers) as well as the evaluation manager, ensuring continued operation.
Fixes #336