12/27/2023 0 Comments Configuring data backup solutionTo restore the cluster, you need to use the exact same installer version as in the original one. To restore a cluster, follow the steps below: The node ID of the node that will become the seed node in the cluster.The IP address of the target machine for each node.The backup of each node is stored in a dedicated directory whose name is based on the node identifier, in the format node_ (for example, node_1, node_5, etc). You'll need this information during the restore. Sudo adduser dynatrace & sudo chown -R dynatrace:dynatrace Ensure the installer has read permissions to the NFS.This path is referred to as in the steps below. On each target node, mount the backup storage to, for example, /mnt/backup.Make sure that system users created for Dynatrace Managed have the same UID:GID identifiers on all nodes.Make sure the existing cluster is stopped to prevent two clusters with the same ID connecting to Dynatrace Mission Control.You risk losing the cluster configuration if you attempt to restore to a cluster that is more than two nodes short of the original backed up cluster. In exceptional cases, it's possible to restore to a cluster with up to two nodes fewer than the backed up cluster. We recommend that you restore the cluster to the same number of nodes as the backed up cluster. The snapshots are incremental, but Elasticsearch merges data segments over time, which results in certain duplicates in the backup. Since Dynatrace keeps some of the older snapshots, backup size grows regardless of the current size on disk. Older snapshots are removed gradually once they are five (5) days old. Initially, Dynatrace copies the entire data set and then creates snapshots of the differences. The snapshot is performed, by default, every 2 hours and it is incremental. While the data is replicated across nodes and there are two replicas in addition to the primary shard, the backup excludes the replicated data.
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