Veritas InfoScale™ for Kubernetes Environments 8.0.300 - Linux

Configuring alert manager on an OpenShift cluster

1. Be ready with the expression and its message for the alert you want to configure. See Table: Alert expressions with the messages.
2. Copy the following and save the file as alertmanager.yaml.

   apiVersion: monitoring.coreos.com/v1
   kind: PrometheusRule
   metadata:
     name: dr-alert
     namespace: <Namespace you want to monitor>
   spec:
     groups:
     - name: dralert
       rules:
       - alert: <Name of the Alert>
         annotations:
           message: '<Alert Message>'
         expr: |
           <Alert Expression>
         for: 5m
         labels:
           severity: critical
           prometheus: openshift-monitoring/k8s

   Note:

   Ensure that you update the alert message and expression.

3. Run the following command on the bastion node.

   oc apply -f alertmanager.yaml

4. You can update and apply alertmanager.yaml for other alerts.

Using OpenShift console to configure alerts

1. Access the OpenShift console. Select Operators > Installed Operators in the left frame.
2. Click InfoScale Cluster. Ensure that the cluster is in a 'Running' state.
3. Select Observe > Targets in the left frame.
4. Enter InfoScale as the search string as under. InfoScale deployment is displayed.
   
5. Select Observe > Metrics in the left frame.
6. In the screen that opens, you can add a new query or run saved queries.
   
7. Click Add query to configure a new query.
8. Assign a name to the query and select the Container.
9. You can then select diskgroup, job, namespace, or pods. Click the parameter and select the value for which you want to configure an alert.
10. Save the query. The saved query now gets listed. You can select a query in the main frame and click Run queries.
11. You can also See Table: Alert expressions with the messages. and enter a query to search.

    After you save the alert, the alert is listed in Observe > Alerts.

Using OpenShift console to silence or stop configured alerts

1. Select Observe > Alerts in the left frame.
2. Select the Alert you want to silence.
3. Click the Actions menu (three vertical dots) at the end of the page.

   Alert details are listed.

4. Click Silence to stop the alert.

Configuring alert manager on a Kubernetes cluster

1. Be ready with the expression and its message for the alert you want to configure. See Table: Alert expressions with the messages.
2. Copy the following and save the file as alertmanager.yaml.

   apiVersion: monitoring.coreos.com/v1
   kind: PrometheusRule
   metadata:
     annotations:
       meta.helm.sh/release-name: prometheus
       meta.helm.sh/release-namespace: default
     generation: 1
     labels:
       app: kube-prometheus-stack
       app.kubernetes.io/instance: prometheus
       app.kubernetes.io/managed-by: Helm
       app.kubernetes.io/part-of: kube-prometheus-stack
       app.kubernetes.io/version: 45.31.1
       chart: kube-prometheus-stack-45.31.1
       heritage: Helm
       release: prometheus
     name: prometheus-kube-prometheus-alertmanager-infoscale1.rules
     namespace: infoscale-vtas
   spec:
     groups:
       - name: dralert.rules
         rules:
           - alert: <Alert>
             annotations:
               description: <Message>
   
               summary: <Summary>
             expr: |-
               <Expression>
             labels:
               severity: critical

   Note:

   Ensure that you update the alert message and expression.

3. Run the following command on the master node.

   kubectl apply -f alertmanager.yaml

4. You can update and apply alertmanager.yaml for other alerts.