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Veritas InfoScale™ for Kubernetes Environments 8.0.300 - Linux

Last Published: 2023-12-12

Product(s): InfoScale & Storage Foundation (8.0.300)

Monitoring InfoScale

With InfoScale installed in OpenShift or Kubernetes environments, monitoring tools like Prometheus, Grafana, and AlertManager are enabled for monitoring of your InfoScale installation. These tools are the monitoring mechanism that OpenShift and Kubernetes provide. Prometheus collects massive data at regular intervals and presents the data as 'Metrics'. You can use this data for monitoring of cluster components and analyze performance of your InfoScale installation.

Note:

For a deported diskgroup, metrics is not visible.

On an OpenShift cluster, after you install InfoScale and configure InfoScale clusters, Prometheus monitoring is automatically installed.

On a Kubernetes cluster, following are the additional steps to install Prometheus

Check if helm is available on the Kubernetes cluster.
If it is available, go to step 4.
Run the following steps -
url -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
chmod 700 get_helm.sh
./get_helm.sh
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
helm install <RELEASE_NAME> prometheus-community/kube-prometheus-stack

On an OpenShift cluster, following is the additional step

Create/Edit cluster-monitoring-config in the openshift-monitoring namespace as under

apiVersion: v1                          
kind: ConfigMap
metadata:
  name: cluster-monitoring-config
  namespace: openshift-monitoring
data:
  config.yaml: |
    enableUserWorkload: true

Run the following commands to verify -

whether pods are created oc/kubectl get pods -A |grep infoscale

whether Prometheus monitoring pods are successfully installed.

On an OpenShift cluster - oc get pods -n {openshift-monitoring} | grep prometheus

On a Kubernetes cluster - kubectl get pods -n {namespace} | grep prometheus

Complete the following steps to enable Prometheus.

Run the following command to know the REST server name.
oc/kubectl get svc -n {Namespace where InfoScale is installed} |grep rest | awk '{print $1}'
Note infoscale-sds-rest-<numerical value> from the command output.

Optionally, to collect metrics with TLS verification; a client certificate is required. Copy the following content into prom-secret.yaml and apply the file.

apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: infoscale-prom-cert
  namespace: infoscale-vtas
spec:
  commonName: infoscale-prom
  usages:
  - client auth
  duration: 2880h0m0s
  issuerRef:
    kind: ClusterIssuer
    name: infoscale-cert-issuer
  renewBefore: 720h0m0s
  secretName: infoscale-prom-tls

Copy the following content into podmonitor.yaml and apply the file. Ensure that you update serverName .

apiVersion: monitoring.coreos.com/v1
kind: PodMonitor
metadata:
  name: infoscale-metrics
  namespace: infoscale-vtas
  labels:
    release: kube-prometheus
spec:
  selector:
    matchLabels:
      cvmmaster: "true"
  podMetricsEndpoints:
  - path: /infoscale/api/2.0/metrics
    port: rest-endpoint
    interval: 2m
    scrapeTimeout: 30s
    scheme: https
    tlsConfig:
      ca:
        secret:
          key: ca.crt
          name: infoscale-prom-tls
      cert:
        secret:
          key: tls.crt
          name: infoscale-prom-tls
      keySecret:
        key: tls.key
        name: infoscale-prom-tls
      serverName: infoscale-sds-rest-<Cluster ID>