k8s部署zabbix监控系统

zabbix简介

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Zabbix 是一种网络监视、管理系统，基于 Server-Client 架构。可用于监视各种网络服务、服务器和网络机器等状态。Zabbix 使用 MySQL、PostgreSQL、SQLite、Oracle 或 IBM DB2 储存资料。Server 端基于 C语言、Web 前端则是基于 PHP 所制作的。Zabbix 可以使用多种方式监视。可以只使用 Simple Check 不需要安装 Client 端，亦可基于 SMTP 或 HTTP 等各种协定做死活监视。在客户端如 UNIX、Windows 中安装 Zabbix Agent 之后，可监视 CPU 负荷、网络使用状况、硬盘容量等各种状态。而就算没有安装 Agent 在监视对象中，Zabbix 也可以经由 SNMP、TCP、ICMP检查，以及利用 IPMI、SSH、telnet 对目标进行监视。另外，Zabbix 包含 XMPP 等各种 Item 警示功能。

zabbix特性

安装部署简单
web可视化管理界面
开源
分布式
实时绘图

实验环境

Kubernetes版本1.16.0
zabbix版本4.4.5（官方镜像）
mysql版本8.0.19（官方镜像）

zabbix k8s部署

部署mysql（采用hostpath做数据持久化）

1.创建pv

vim mysql-pv.yaml

kind: PersistentVolume
apiVersion: v1
metadata:
  name: mysql-pv-volume
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 20Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pv-claim
spec:
  storageClassName: manual
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi

2.创建mysql配置文件（configMap）

vim mysql-config.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-config
data:
  custom.cnf: |
    [mysqld]
    default_storage_engine=innodb
    skip_external_locking
    skip_host_cache
    skip_name_resolve
    default_authentication_plugin=mysql_native_password

3.创建mysql密码（secret）

[root@k8s-master-01 mysql]# echo -n password|base64
cGFzc3dvcmQ=
vim mysql-secret.yaml

apiVersion: v1
kind: Secret
metadata:
  name: mysql-user-pwd
data:
  mysql-root-pwd: cGFzc3dvcmQ=

4.创建mysql部署文件

vim mysql-deploy.yaml

apiVersion: v1
kind: Service
metadata:
  name: mysql
spec:
  type: NodePort
  ports:
  - port: 3306
    nodePort: 30006
    protocol: TCP
    targetPort: 3306 
  selector:
    app: mysql

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - image: mysql
        name: mysql
        imagePullPolicy: IfNotPresent
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-user-pwd
              key: mysql-root-pwd
        ports:
        - containerPort: 3306
          name: mysql
        volumeMounts:
        - name: mysql-config
          mountPath: /etc/mysql/conf.d/
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
        - name: timezone
          mountPath: /etc/localtime
      volumes:
      - name: mysql-config
        configMap:
          name: mysql-config
      - name: timezone
        hostPath:
          path: /usr/share/zoneinfo/Asia/Shanghai
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: mysql-pv-claim

5.使用kubectl命令及以上yaml文件部署mysql

[root@k8s-master-01 mysql]# kubectl apply -f ./      
configmap/mysql-config created
service/mysql created
deployment.apps/mysql created
persistentvolume/mysql-pv-volume created
persistentvolumeclaim/mysql-pv-claim created
secret/mysql-user-pwd created

部署zabbix-server

vim zabbix-server-deploy.yaml

apiVersion: v1
kind: Service
metadata:
  name: zabbixserver
spec:
  type: NodePort
  ports:
  - port:  10051
    nodePort: 30051
    protocol: TCP
    targetPort: 10051
  selector:
    app: zabbix-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: zabbix-server
spec:
  replicas: 1
  selector:
    matchLabels:
      app: zabbix-server
  template:
    metadata:
      labels:
        app: zabbix-server
    spec:
      containers:
        - name: zabbix-server
          image: zabbix/zabbix-server-mysql
          imagePullPolicy: IfNotPresent
          ports:
          - containerPort: 10051
            name: server
            protocol: TCP
          readinessProbe:
            tcpSocket:
              port: server
            initialDelaySeconds: 5
            periodSeconds: 10
          livenessProbe:
            tcpSocket:
              port: server
            initialDelaySeconds: 15
            periodSeconds: 20
          env:
          - name: DB_SERVER_HOST
            value: "mysql"
          - name: MYSQL_USER
            value: "zabbix"
          - name: MYSQL_PASSWORD
            value: "zabbix"
          - name: MYSQL_DATABASE
            value: "zabbix"
          - name: ZBX_CACHESIZE
            value: "1024M"
          - name: ZBX_TRENDCACHESIZE
            value: "1024M"
          - name: ZBX_HISTORYCACHESIZE
            value: "2048M"
          - name: ZBX_HISTORYINDEXCACHESIZE
            value: "1024M"
          - name: ZBX_STARTTRAPPERS
            value: "5"
          - name: ZBX_STARTPREPROCESSORS
            value: "10"
          - name: ZBX_STARTDBSYNCERS
            value: "10"
          - name: DB_SERVER_PORT
            value: "3306"
        - name: zabbix-agent
          image: zabbix/zabbix-agent
          imagePullPolicy: Always
          ports:
          - containerPort: 10050
            name: zabbix-agent
          env:
          - name: ZBX_HOSTNAME
            value: "Zabbix server"
          - name: ZBX_SERVER_HOST
            value: "127.0.0.1"
          - name: ZBX_PASSIVE_ALLOW
            value: "true"
          - name: ZBX_STARTAGENTS
            value: "3"
          - name: ZBX_TIMEOUT
            value: "10"
          securityContext:
            privileged: true

部署zabbix-web

vim zabbix-web.yaml

apiVersion: v1
kind: Service
metadata:
  name: zabbix-web
spec:
  type: NodePort
  ports:
  - port: 80
    protocol: TCP
    nodePort: 30080
    targetPort: 80
  selector:
    app: zabbix-web
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: zabbix-web
spec:
  replicas: 2
  selector:
    matchLabels:
      app: zabbix-web
  template:
    metadata:
      labels:
        app: zabbix-web
    spec:
      containers:
      - image: zabbix/zabbix-web-nginx-mysql
        name: zabbix-web
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80
          name: web
          protocol: TCP
        env:
        - name: DB_SERVER_HOST
          value: "mysql"
        - name:  ZBX_SERVER_HOST
          value: "zabbixserver"
        - name: MYSQL_USER
          value: "zabbix"
        - name: MYSQL_PASSWORD
          value: "zabbix"
        - name: TZ
          value: "Asia/Shanghai"

使用kubectl命令及以上yaml文件部署

[root@k8s-master-01 zabbix]# kubectl apply -f ./
service/zabbixserver created
deployment.apps/zabbix-server created
service/zabbix-web created
deployment.apps/zabbix-web created

查看部署的组件状态

[root@k8s-master-01 zabbix]# kubectl get deploy,pod,svc,cm,secret,pv,pvc -o wide
NAME                            READY   UP-TO-DATE   AVAILABLE   AGE     CONTAINERS                   IMAGES                                           SELECTOR
deployment.apps/mysql           1/1     1            1           15m     mysql                        mysql                                            app=mysql
deployment.apps/zabbix-server   1/1     1            1           3m23s   zabbix-server,zabbix-agent   zabbix/zabbix-server-mysql,zabbix/zabbix-agent   app=zabbix-server
deployment.apps/zabbix-web      2/2     2            2           3m23s   zabbix-web                   zabbix/zabbix-web-nginx-mysql                    app=zabbix-web

NAME                                READY   STATUS    RESTARTS   AGE     IP             NODE          NOMINATED NODE   READINESS GATES
pod/mysql-ffcc44677-g2tlr           1/1     Running   0          15m     10.244.0.126   k8s-node-01              
pod/zabbix-server-75cdd8865-rnxhx   2/2     Running   0          3m24s   10.244.0.127   k8s-node-01              
pod/zabbix-web-856989975-8k45c      1/1     Running   0          3m23s   10.244.0.128   k8s-node-01              
pod/zabbix-web-856989975-hxdfl      1/1     Running   0          3m24s   10.244.1.118   k8s-node-02              

NAME                   TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)           AGE     SELECTOR
service/kubernetes     ClusterIP   10.0.0.1             443/TCP           88d     
service/mysql          NodePort    10.0.0.15            3306:30006/TCP    15m     app=mysql
service/zabbix-web     NodePort    10.0.0.189           80:30080/TCP      3m23s   app=zabbix-web
service/zabbixserver   NodePort    10.0.0.234           10051:30051/TCP   3m23s   app=zabbix-server

NAME                     DATA   AGE
configmap/mysql-config   1      15m

NAME                         TYPE                                  DATA   AGE
secret/default-token-7qhlz   kubernetes.io/service-account-token   3      88d
secret/mysql-user-pwd        Opaque                                1      15m
secret/tls-secret            kubernetes.io/tls                     2      61d

NAME                               CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                    STORAGECLASS   REASON   AGE   VOLUMEMODE
persistentvolume/mysql-pv-volume   20Gi       RWO            Retain           Bound    default/mysql-pv-claim   manual                  15m   Filesystem

NAME                                   STATUS   VOLUME            CAPACITY   ACCESS MODES   STORAGECLASS   AGE   VOLUMEMODE
persistentvolumeclaim/mysql-pv-claim   Bound    mysql-pv-volume   20Gi       RWO            manual         15m   Filesystem

通过浏览器访问测试

浏览器地址栏输入任意node节点的ip:30080 k8s部署zabbix监控系统

输入用户名及密码访问

默认用户：Admin
默认密码：zabbix

k8s部署zabbix监控系统

至此k8s部署zabbix-server测试完成。

本文暂不展开说明k8s基础环境部署，后期再专门就k8s基础环境部署做专门说明。

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