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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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