# IB Nodes Down

LLMS index: [llms.txt](/llms.txt)

---

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## IB Nodes Down Alert

**Alert ID:** `ib_nodes_down`
**Category:** Integration Broker
**Default threshold:** Immediate

### What This Alert Detects

This alert triggers when there are entries in the PeopleSoft table `PSNODESDOWN`. An entry in this table indicates that a message node is **blocked** or **offline**.

When the Integration Broker attempts to publish a message to an external or remote node and the connection fails, the system registers the node as "down" in `PSNODESDOWN`. While the node is down, all subsequent publication contracts to that node are automatically paused/blocked and remain queued in the database until the node status is resolved.

### Severity Logic

|                 Condition                  | Severity |
| ------------------------------------------ | -------- |
| Message node entry exists in `PSNODESDOWN` | Critical |

### What Gets Checked

The alert queries `PSNODESDOWN` for any active rows. For each row found, it groups the results by message node and counts the number of blocked transactions.

### Alert Details

Each alert item includes:

- The name of the offline message node
- The count of blocked transactions queueing for the node
- A link to the Node detail page in the browser showing connection diagnostics

### Configuration

```yaml
alerts:
  checks:
    ib_nodes_down:
      enabled: true
```

|  Setting  | Default |          Description          |
| --------- | ------- | ----------------------------- |
| `enabled` | `true`  | Whether this check is active. |

### How to Respond

1. Click the node link in the alert to inspect the node configuration and test connectivity.
2. Check if the external target service (e.g. an external API gateway, third-party system, or another PeopleSoft application node) is offline or undergoing maintenance.
3. Verify network routing and gateway connector configurations.
4. Once the external endpoint is confirmed to be healthy, delete the down-node status entry in PeopleSoft (typically via the **Service Operations Monitor > Administration > Nodes Down** page) and resubmit or force retry the stalled publication contracts.