When you create the cluster nodes that make up vRealize Operations, the associated setup within your network environment is critical to the inter-node communication and proper operation.
- The primary and replica nodes must use a static IP address, or fully qualified domain name (FQDN) with a static IP address.
Data and remote collector nodes can use dynamic host control protocol (DHCP).
- You can successfully reverse-DNS all nodes, including remote collectors, to their FQDN, currently the node hostname.
Nodes deployed by OVF have their hostnames set to the retrieved FQDN by default.
- All nodes, including remote collectors, must be bidirectionally routable by IP address or FQDN.
- Do not separate analytics cluster nodes with network address translation (NAT), load balancer, firewall, or a proxy that inhibits bidirectional communication by IP address or FQDN.
- Analytics cluster nodes must not have the same hostname.
- Place analytics cluster nodes within the same data center and connect them to the same local area network (LAN).
- Place analytics cluster nodes on same Layer 2 network and IP subnet.
A stretched Layer 2 or routed Layer 3 network is not supported.
- Do not span the Layer 2 network across sites, which might create network partitions or network performance issues.
- With Continuous Availability activated, separate analytics cluster nodes into fault domains, stretched across vSphere clusters
- Packet Round Trip Time between the analytics cluster nodes must be 5 ms or lower.
- Network bandwidth between the analytics cluster nodes must be one gbps or higher.
- Do not distribute analytics cluster nodes over a wide area network (WAN).
To collect data from a WAN, a remote or separate data center, or a different geographic location, use remote collectors.
- Remote collectors are supported through a routed network but not through NAT.
- Do not include an underscore in the hostname of any cluster node.
- Cloud proxies must have a proper DNS resolution to the vRealize Operations nodes when using short/long FQDN names. This is applicable to on-prem cloud proxy.