hashicorp/nomad · error

failed to retrieve node %s: %v

Error message

failed to retrieve node %s: %v

What it means

While handling an alloc update, the server's memdb state store returned an error when looking up the target node by ID; this wraps the underlying store failure, indicating state access problems rather than a bad request.

Source

Thrown at nomad/node_endpoint.go:1538

	}

	defer metrics.MeasureSince([]string{"nomad", "client", "update_alloc"}, time.Now())

	// Ensure at least a single alloc
	if len(args.Alloc) == 0 {
		return fmt.Errorf("must update at least one allocation")
	}

	// Ensure the node is allowed to update allocs.
	// The node needs to successfully heartbeat before updating its allocs.
	targetNodeID := args.Alloc[0].NodeID
	if targetNodeID == "" {
		return fmt.Errorf("missing node ID")
	}

	node, err := n.srv.State().NodeByID(nil, targetNodeID)
	if err != nil {
		return fmt.Errorf("failed to retrieve node %s: %v", targetNodeID, err)
	}
	if node == nil {
		return fmt.Errorf("node %s not found", targetNodeID)
	}
	if !aclObj.AllowClientOp(node.NodePool) {
		return structs.ErrPermissionDenied
	}
	if err := auth.AuthorizeSameNode(args.GetIdentity(), targetNodeID); err != nil {
		return err
	}
	if node.UnresponsiveStatus() {
		return fmt.Errorf("node %s is not allowed to update allocs while in status %s", targetNodeID, node.Status)
	}

	// Ensure that evals aren't set from client RPCs
	// We create them here before the raft update
	if len(args.Evals) != 0 {
		return fmt.Errorf("evals field must not be set")

View on GitHub (pinned to 482b49bf1a)

Solutions

1. Check server health and Raft leadership; the state store may be unavailable on a follower or during leader election
2. Retry the request against a healthy server
3. Inspect server logs for state store or Raft errors

When it happens

Trigger: Thrown at nomad/node_endpoint.go:1538 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hashicorp/nomad@482b49bf1a (2026-09-04). Data as JSON: /api/errors/9218f9428efb98d2. Report an issue: GitHub.