Restricting the number of alerts returned by the data layer to the Alert Viewer

By default, the data layer returns all the alerts that match the filter in the Alert Viewer. If this has the potential to cause performance issues on the backend, you can restrict the number of alerts to be returned by the data layer.

Note: When increasing this limit an increase to CPU and memory resources may also be required.

Edit the aiops-ui-configurations ConfigMap with your required values. You can perform this task from the command line or the console UI.

Command line

Run the command:
```
oc edit cm aiops-ui-configurations
```
Add the following line under the data section:
```
IR_UI_MAX_ALERT_FETCH_LIMIT: "x"
```
Where "x" equals the number of alerts that are returned by the data layer.
Save your changes to the ConfigMap file.

Red Hat OpenShift Container console

Log in to the Red Hat OpenShift Container console as a user with cluster administrator access.
From the navigation menu, click Workloads > Config Maps.
Search for aiops-ui-configurations.
Click ... > Edit Config Map.
Add the following line under the data section:
```
IR_UI_MAX_ALERT_FETCH_LIMIT: "x"
```
Where "x" equals the number of alerts that are returned by the data layer.
Click Submit and wait for the aiops-akora-ui pod to restart.

Example

# Please edit the object below. Lines beginning with a '#' will be ignored,
# and an empty file will abort the edit. If an error occurs while saving this file will be
# reopened with the relevant failures.
#
apiVersion: v1
data:
  IR_UI_MAX_ALERT_FETCH_LIMIT: "5"
  cacertVersion: "41802278"
  prerequisiteCheck: Complete
  productVersion: 4.5.0
  zenVersion: 5.1.1
kind: ConfigMap
metadata:
  annotations:
    consoleui.aiops.ibm.com/controller-workload: ibm-watson-aiops-ui-operator-controller-manager-5cbd547bcbz7nbk-1708622477
  creationTimestamp: "2024-02-20T00:41:57Z"
  labels:
    app.kubernetes.io/component: aiops-aiops-ui-configurations
    app.kubernetes.io/instance: aiops-aiops-ui-configurations-4.5.0
    app.kubernetes.io/managed-by: ibm-watson-aiops-ui-operator
    app.kubernetes.io/name: aiops-aiops-ui-configurations
    app.kubernetes.io/specs: aiops
    release: aiops
  name: aiops-ui-configurations
  namespace: cp4waiops
  ownerReferences:
  - apiVersion: consoleui.aiops.ibm.com/v1
    blockOwnerDeletion: true
    controller: true
    kind: BaseUI
    name: baseui-instance
    uid: 0d85b930-3f93-458f-8426-cf631545de7d
  resourceVersion: "46263896"
  uid: 91f04ab8-61a8-4cc1-8d5c-361a30def34d

A message on the Alert Viewer indicates when the list has been configured to limit the number of alerts displayed.