How Bonsai Manages Watermarks
The following article applies to Business and Enterprise tiers with dedicated single tenant clusters. These watermark alerts do not apply to Sandbox, Staging, or Standard tiers on shared multitenant clusters; instead, these tiers will be notified once an overage is detected on at least one metered metric.
- Alert watermark. When a node in a single tenant cluster reaches 70% disk or higher, Bonsai sends out an alert to the user.
- Low watermark. When a node reaches its low watermark stage(Bonsai defaults to 70% disk used), the cluster will no longer allocate new shards to this node.
- High watermark. When a node reaches its high watermark stage(Bonsai defaults to 75% disk used), the cluster will actively try to move shards off the node.
- Flood stage. When a node reaches its flood stage watermark(Bonsai uses 95% disk used), the cluster will put all open indices into a state that only allows for reads and deletes.