Prerequisites and Guidelines
Cloud deployments are supported starting with Nexus Dashboard, Release 2.0.2b. Earlier releases support only the physical form factor described in Deploying as Physical Appliance.
Before you proceed with deploying the Nexus Dashboard cluster in Linux KVM, you must:
Review and complete the general prerequisites described in the Deployment Overview.
Note that this document describes how to initially deploy a three-node Nexus Dashboard cluster. If you want to expand an existing cluster with additional nodes (such as
standby), see the "Deploying Additional Nodes" section of the Cisco Nexus Dashboard User Guide instead.
The guide is available from the Nexus Dashboard UI or online at Cisco Nexus Dashboard User Guide
Ensure that the KVM form factor supports your scale and application requirements.
Scale and application co-hosting vary based on the cluster form factor. You can use the Nexus Dashboard Capacity Planning tool to verify that the virtual form factor satisfies your deployment requirements.
Ensure you have enough system resources:
Table 1. Deployment Requirements Orchestrator Version Requirements
Earlier releases are not supported.
3.10.0-957.el7.x86_64or later with KVM
48 GB of RAM
800 GB disk
Each node requires a dedicated disk partition
The disk must have I/O latency of 20ms or less.
You can verify the I/O latency using the following command:
# fio --rw=write --ioengine=sync --fdatasync=1 --directory=test-data_with_se --size=22m --bs=2300 --name=mytest
And confirm that the
fsync/fdatasync/sync_file_rangesection is under 20ms.
We recommend that each Nexus Dashboard node is deployed in a different KVM server.