How to setup MSSQL exporter

A short note for setting up MSSQL monitoring using Prometheus and Prometheus MSSQL Exporter.

First, create a new database user.

CREATE LOGIN MSSQLExporter WITH PASSWORD = ‘<PASSWORD>’;
CREATE USER MSSQLExporter FOR LOGIN MSSQLExporter;
GRANT VIEW ANY DEFINITION TO MSSQLExporter;
GRANT VIEW SERVER STATE TO MSSQLExporter;

Then, create a deployment manifest.

# mssql-exporter.yaml
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mssql-exporter
  labels:
    app.kubernetes.io/name: mssql-exporter
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: mssql-exporter
  template:
    metadata:
      labels:
        app.kubernetes.io/name: mssql-exporter
    spec:
      containers:
        - name: mssql-exporter
          image: awaragi/prometheus-mssql-exporter:v1.3.0
          ports:
            - containerPort: 4000
          env:
            - name: USERNAME
              value: "MSSQLExporter"
            - name: PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mssql-exporter
                  key: MSSQL_EXPORTER_PASSWORD
            - name: SERVER
              value: mssql.example.local
            - name: PORT
              value: "1433"
---
apiVersion: v1
kind: Service
metadata:
  name: mssql-exporter
  labels:
    app.kubernetes.io/name: mssql-exporter
spec:
  type: ClusterIP
  ports:
    - port: 4000
      targetPort: 4000
      protocol: TCP
  selector:
    app.kubernetes.io/name: mssql-exporter
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: mssql-exporter
  labels:
    app.kubernetes.io/name: mssql-exporter
spec:
  endpoints:
    - targetPort: 4000
  namespaceSelector:
    matchNames:
      - mssql
  selector:
    matchLabels:
      app.kubernetes.io/name: mssql-exporter

Finally, apply.

kubectl apply -f mssql-exporter.yaml