Overview of the Rescale operation
This page shows how the Altinity Cloud Manager with an Altinity.Anywhere installation to remotely rescale a customer’s on-prem cluster.
The Ubuntu host the Kubernetes installation is installed on shows the various commmands use to verify the changes made from the ACM.
Figure 1 - Selecting Actions > Rescale from the cluster to modify.
Figure 2 - Changing the number of Shards from 1 to 2.
Figure 3 - Rescale confirmation.
Figure 4 - Nodes in the process of rescaling.
Rescaling a cluster on the ACM
Select a cluster, then use the Actions > Rescale menu to bring up the Rescale Cluster window, then in the Desired Cluster Size, change the Number of Shards from 1 to 2 then press OK, then CONFIRM.
The nodes online pill box will show grey, 2/4 nodes online, then after several minutes, turn green showing 4/4 nodes online. If you do not see the grey 2/4 nodes online, and the nodes online is green and shows 2/2 nodes online, try the rescale operation again.
Ubuntu Kubernetes Commands
kubectl -n altinity-cloud-managed-clickhouse... showing the Altinity clusters before the rescale operation.
Figure 5 - Kubernetes command
kubectl -n <Altinity cluster name> running on-prem, that is managed from also by the ACM.
Figure 6 - The newly added nodes …-demo-1-0-0 after the rescale operation are now listed, showing Pending.
kubectl get nodes before the rescale operation.
Figure 7 - Kubernetes command
kubectl get nodes shows all the nodes on the Altinity ClickHouse cluster.
Figure 8 - The pending node is added as 192.168.149.238 and is spinning up.
The newly spun up shard in cluster-x now reads 4/4 nodes online.
Figure 9 - The Altinity Cloud Manager showing the remotely managed cluster-y with 4/4 nodes online.