apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-m-cnf
data:
  config: |-
    [mysqld]
    bind-address=0.0.0.0
    port=3306
    skip-name-resolve
    basedir=/var/lib/mysql
    datadir=/var/lib/mysql/data
    log-bin=/var/lib/mysql/logs
    plugin_dir=/var/lib/mysql/plugin
    socket=/var/lib/mysql/mysql.sock
    pid-file=/var/lib/mysql/mysqld.pid
    log-error=/var/lib/mysql/logs/mysqld.log
    max_allowed_packet=16M
    character-set-server=utf8mb4
    collation-server=utf8mb4_unicode_ci
    
    # Extended
    sql_mode=STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
    binlog_format=row
    expire_logs_days=30
    max_connections=5000 
    innodb_buffer_pool_size=4G
    innodb_log_file_size=1G
    innodb_flush_log_at_trx_commit=2
    sync_binlog=0

    [client]
    port=3306
    socket=/var/lib/mysql/mysql.sock
    default-character-set=utf8mb4
    plugin_dir=/var/lib/mysql/plugin

    [manager]
    port=3306
    socket=/var/lib/mysql/mysql.sock
    pid-file=/var/lib/mysql/mysqld.pid

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mysql-m
spec:
  replicas: 1
  serviceName: mysql
  selector:
    matchLabels:
      app: mysql-m
  template:
    metadata:
      labels:
        app: mysql-m
    spec:
      initContainers:
        - name: init
          image: busybox
          imagePullPolicy: IfNotPresent
          command: 
          - sh
          - -c 
          - |
            sysctl -w net.ipv4.tcp_keepalive_time=300
            sysctl -w net.ipv4.tcp_keepalive_intvl=10
            sysctl -w net.ipv4.tcp_keepalive_probes=3
          securityContext:
            privileged: true
      containers:
      - name: mysql
        image: mysql:8.0.33
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: "Beaconfire@2099"
        - name: MYSQL_DATABASE
          value: "test"
        - name: MYSQL_USER
          value: "app"
        - name: MYSQL_PASSWORD
          value: "HelloBeaconfire!"
        volumeMounts:
        - name: mysql-m
          mountPath: /var/lib/mysql
        - name: mysql-m-cnf
          mountPath: /etc/my.cnf
          subPath: my.cnf
          readOnly: true
      volumes:
      - name: mysql-m
        hostPath:
          path: /data/prod/mysql-m
      - name: mysql-m-cnf
        configMap:
          name: mysql-m-cnf
          items:
          - key: config
            path: my.cnf
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: "kubernetes.io/hostname"
                operator: In
                values:
                - bfs-k8snode-10-2-2-90.hetzner.base.beaconfireinc.com
      tolerations:
        - key: "app.kubernetes.io/name"
          operator: "Equal"
          value: "mysql"
          effect: "NoSchedule"
---
apiVersion: v1
kind: Service
metadata:
  name: mysql-m
  labels:
    app: mysql-m
spec:
  ports:
  - protocol: TCP
    port: 3306
    targetPort: 3306
  selector:
    app: mysql-m
  type: ClusterIP