![]() If the node reports that the etcd cluster is healthy, a snapshot is created from it and optionally uploaded to S3. Generating the Snapshot from etcd Nodes įor each etcd node in the cluster, the etcd cluster health is checked. It's always recommended to take a new snapshot before any upgrades. Restore etcd, Kubernetes versions and cluster configuration: This option should be used if you changed both the Kubernetes version and cluster configuration when upgrading.Restore etcd and Kubernetes version: This option should be used if a Kubernetes upgrade is the reason that your cluster is failing, and you haven't made any cluster configuration changes.Restore just the etcd contents: This restore is similar to restoring to snapshots in Rancher before v2.4.0.The multiple components of the snapshot allow you to select from the following options if you need to restore a cluster from a snapshot: The cluster configuration in the form of the cluster.ymlīecause the Kubernetes version is now included in the snapshot, it is possible to restore a cluster to a prior Kubernetes version.When Rancher creates a snapshot, it includes three components: How Snapshots Work Snapshot Components ![]() The advantages of configuring S3 is that if all etcd nodes are lost, your snapshot is saved remotely and can be used to restore the cluster. Snapshots of the etcd database are taken and saved either locally onto the etcd nodes or to a S3 compatible target. Additionally, one-time snapshots can easily be taken as well. Rancher recommends configuring recurrent etcd snapshots for all production clusters. # docker info Client: Debug Mode: false Server: Containers: 12 Running: 10 Paused: 0 Stopped: 2 Images: 8 Server Version: 19.03.5 Storage Driver: overlay2 Backing Filesystem: xfs Supports d_type: true Native Overlay Diff: true Logging Driver: json-file Cgroup Driver: systemdįor reference please check docker official document.In the Rancher UI, etcd backup and recovery for Rancher launched Kubernetes clusters can be easily performed. To format an xfs filesystem correctly, use the flag -n ftype=1.
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