---
apiVersion: v1
kind: ConfigMap
metadata:
  name: mysqld-exporter
data:
  config: |-
    [client]
    user = exporter
    password = beaconfire@2024!

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-exporter
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql-exporter
  template:
    metadata:
      labels:
        app: mysql-exporter
    spec:
      containers:
      - name: mysql-exporter
        image: prom/mysqld-exporter:v0.15.1
        imagePullPolicy: Always
        args:
        - "--config.my-cnf=/etc/my.cnf"
        - "--no-collect.info_schema.innodb_cmp"
        - "--no-collect.info_schema.innodb_cmpmem"
        - "--no-collect.global_variables"
        volumeMounts:
        - name: config-my-cnf
          mountPath: /etc/my.cnf
          subPath: my.cnf
          readOnly: true
        resources: 
          requests:
            cpu: 0.01
            memory: 128Mi
          limits:
            cpu: 0.1
            memory: 512Mi
      volumes:
      - name: config-my-cnf
        configMap:
          name: mysqld-exporter
          items:
          - key: config
            path: my.cnf
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: "app.kubernetes.io/component"
                operator: In
                values:
                - mysql
      tolerations:
        - key: "app.kubernetes.io/component"
          operator: "Equal"
          value: "mysql"
          effect: "NoSchedule"
---
apiVersion: v1
kind: Service
metadata:
  name: mysql-exporter
spec:
  type: ClusterIP
  ports:
    - name: http
      protocol: TCP
      port: 8761
      targetPort: http
  selector:
    app: mysql-exporter