k8s安装redmine

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课程内容：各种k8s部署方式。包括minikube部署，kubeadm部署，kubeasz部署，rancher部署，k3s部署。包括开发测试环境部署k8s，和生产环境部署k8s。

腾讯课堂连接地址https://ke.qq.com/course/478827?taid=4373109931462251&tuin=ba64518

腾讯课堂连接地址https://ke.qq.com/course/484107?tuin=ba64518

介绍主要的k8s资源的使用配置和命令。包括configmap，pod，service，replicaset，namespace，deployment，daemonset，ingress，pv，pvc，sc，role，rolebinding，clusterrole，clusterrolebinding，secret，serviceaccount，statefulset，job，cronjob，podDisruptionbudget，podSecurityPolicy,networkPolicy,resourceQuota，limitrange，endpoint，event，conponentstatus，node，apiservice，controllerRevision等。
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详细介绍helm命令，学习helm chart语法，编写helm chart。深入分析各项目源码，学习编写helm插件

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mysql数据库：

apiVersion: v1
kind: ReplicationController
metadata:
  name: mariadb-master
  labels:
    name: mariadb-master
spec:
  replicas: 1
  selector:
    name: mariadb-master
  template:
    metadata:
      labels:
        name: mariadb-master
    spec:
      nodeSelector:
        deploy: app
      containers:
        - name: mariadb-master
          image: mariadb:10.2.13
          env:
            - name: MYSQL_DATABASE
              value: redmine
            - name: MYSQL_ROOT_PASSWORD
              value: admin
          ports:
            - containerPort: 3306
              name: mariadb-master
          volumeMounts:
            - name: mariadb-persistent-storage
              mountPath: /var/lib/mysql
          livenessProbe:
            tcpSocket:
              port: 3306
            initialDelaySeconds: 30
            timeoutSeconds: 1
      volumes:
        - name: mariadb-persistent-storage
          persistentVolumeClaim:
            claimName: pvc-mariadb

apiVersion: v1
kind: Service
metadata:
  name: mariadb-master
  labels:
    name: mariadb-master
spec:
  ports:
    - port: 3306
      targetPort: 3306
      protocol: TCP
  selector:
    name: mariadb-master

存储：

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  labels:
    app: pvc-mariadb
  name: pvc-mariadb
spec:
  accessModes:
  - ReadWriteMany
  storageClassName: glusterfs-storage
  resources:
    requests:
      storage: 8Gi

redmine：

apiVersion: v1
kind: ReplicationController
metadata:
  name: redmine
  labels:
    name: redmine
spec:
  replicas: 3
  selector:
    name: redmine
  template:
    metadata:
      labels:
        name: redmine
    spec:
      nodeSelector:
        deploy: app
      containers:
        - name: redmine
          image: registry.cn-hangzhou.aliyuncs.com/hxpapp/redmine:3.4.4
          env:
            - name: REDMINE_DB_MYSQL
              value: mariadb-master
            - name: REDMINE_DB_USERNAME
              value: root
            - name: REDMINE_DB_PASSWORD
              value: admin
            - name: REDMINE_DB_DATABASE
              value: redmine
          ports:
            - containerPort: 3000
              protocol: TCP
          livenessProbe:
            httpGet:
              path: /
              port: 3000
            initialDelaySeconds: 60
            timeoutSeconds: 1

apiVersion: v1
kind: Service
metadata:
  name: redmine
  labels:
    name: redmine
spec:
  type: ClusterIP
  ports:
    - port: 80
      targetPort: 3000
      protocol: TCP
  selector:
    name: redmine

外部访问：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: redmine-ingress
  labels: 
    app: redmine
spec:
  rules:
  - host: redmine.youben.demo
    http:
      paths:
      - backend:
          serviceName: redmine
          servicePort: 80