getHealth RPC Method

Returns the current health of the node. A healthy node is one that is within HEALTH_CHECK_SLOT_DISTANCE slots of the latest cluster confirmed slot.

Parameters

None

Result

If the node is healthy: "ok"

If the node is unhealthy, a JSON RPC error response is returned. The specifics of the error response are UNSTABLE and may change in the future

Code sample

curl https://api.devnet.solana.com -s -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc":"2.0","id":1, "method":"getHealth"}
'

Response

Healthy Result:

{ "jsonrpc": "2.0", "result": "ok", "id": 1 }

Unhealthy Result (generic):

{
  "jsonrpc": "2.0",
  "error": {
    "code": -32005,
    "message": "Node is unhealthy",
    "data": {}
  },
  "id": 1
}

Unhealthy Result (if additional information is available)

{
  "jsonrpc": "2.0",
  "error": {
    "code": -32005,
    "message": "Node is behind by 42 slots",
    "data": {
      "numSlotsBehind": 42
    }
  },
  "id": 1
}