HA Groups¶
An HA (high-availability) group in NereidHorizon organizes multiple edge nodes into a high-availability cluster so that services can be deployed redundantly across the group. Use HA groups when a workload must keep running even if one member node is lost.
Create an HA group¶
- Open the HA Groups page and start a new group.
- Enter a unique group name — this is required.
- Optionally add a description and choose member nodes.
Edit membership¶
In the edit view, add nodes to the group or remove existing members. Each node can belong to only one HA group, so a node already in another group cannot be added until it is removed there.
Delete an HA group¶
Remove all member nodes first; a group that still has members cannot be deleted.
Error codes¶
| Code | Meaning |
|---|---|
| 400 | Group name missing or invalid |
| 409 | A group with that name already exists |
| 502 | Exchange unreachable |