Manager nodes provide optimized stability and performance for ExtraHop recordstore clusters and are required for clusters with six or more nodes. A manager-only node is dedicated to cluster management tasks and does not store records. This guide provides guidelines for adding three manager-only nodes to new and existing clusters with six to nine data-only nodes.
|Important:||If your recordstore cluster contains fewer than six nodes, you do not need to configure manager nodes.|
Manager nodes are virtual appliances with reduced resource specifications. Recordstore clusters typically require that all nodes match in both appliance type (virtual or physical) and size (resource specifications). However, manager-only nodes are the exception: a virtual manager-only node can be added to a cluster that has physical nodes and different resource specifications. Your data-only nodes should still match.
- Configure a new cluster with six or more data-only nodes and three manager-only nodes
- Convert an existing cluster that already includes one dedicated manager-only node to a cluster with three manager-only nodes
- Configure an existing cluster with six or more data-only nodes to add three manager-only nodes
Depending on your virtual implementation, download the package or instance associated with the smallest Explore node and modify the disk size to match the specifications listed below.
|Important:||For KVM deployments, you must delete the data disk that is preconfigured in the package and then add a new 12 GB disk before first boot.|
|Type||vCPUs||RAM||Boot Disk||Data Disk||Network||Size|
|AWS||4||8 GB||4 GB||25 GB||1 management vNIC||m5.xlarge|
|Azure||4||8 GB||4 GB||25 GB||1 management vNIC||Standard_F4s_v2|
|Hyper-V||4||8 GB||4 GB||12 GB||1 management vNIC||EXA-Hyper-V Package|
|KVM||4||8 GB||4 GB||12 GB||1 management vNIC||5100v Extra-Small Package|
|VMware||4||8 GB||4 GB||12 GB||1 management vNIC||5100v Manager Node|