nacos standalone with MySQL On K8S

原创
2019/11/06 16:51
阅读数 1K

nacos 部署在k8s 上的例子是使用的stateful 三节点加 MySQL 主从,对于测试环境来说太占资源了。官方给出的 docker-compose 单节点也是 MySQL 主从,对于测试环境没必要。所以在测试环境上基于官方的例子作出一些修改,部署一个单节点的 nacos-server 和 单节点MySQL,记录一些使用的文件。 Dockerfile:

FROM openjdk

ENV TIME_ZONE=Asia/Shanghai \
    MODE="standalone" \
    PREFER_HOST_MODE="ip"\
    BASE_DIR="/home/nacos" \
    CLASSPATH=".:/home/nacos/conf:$CLASSPATH" \
    CLUSTER_CONF="/home/nacos/conf/cluster.conf" \
    FUNCTION_MODE="all" \
    NACOS_USER="nacos" \
    JVM_XMS="2g" \
    JVM_XMX="2g" \
    JVM_XMN="1g" \
    JVM_MS="128m" \
    JVM_MMS="320m" \
    NACOS_DEBUG="n" \
    TOMCAT_ACCESSLOG_ENABLED="false" \
    JAVA="/usr/java/openjdk-13/bin/java"

WORKDIR /$BASE_DIR

RUN set -x && \
    yum update -y && \
    yum install iputils nc libcurl -y  && \
    ln -snf /usr/share/zoneinfo/$TIME_ZONE /etc/localtime && echo '$TIME_ZONE' > /etc/timezone && \
    yum autoremove && yum clean all

COPY ./nacos /home/nacos
# set startup log dir
RUN mkdir -p logs \
	&& cd logs \
	&& touch start.out \
	&& ln -sf /dev/stdout start.out \
	&& ln -sf /dev/stderr start.out

EXPOSE 8848
ENTRYPOINT ["bin/docker-startup.sh"]

application.properties

# spring
server.servlet.contextPath=${SERVER_SERVLET_CONTEXTPATH:/nacos}
server.contextPath=/nacos
server.port=${NACOS_SERVER_PORT:8848}
spring.datasource.platform=${SPRING_DATASOURCE_PLATFORM:""}
nacos.cmdb.dumpTaskInterval=3600
nacos.cmdb.eventTaskInterval=10
nacos.cmdb.labelTaskInterval=300
nacos.cmdb.loadDataAtStart=false
db.num=${MYSQL_DATABASE_NUM:2}
db.url.0=jdbc:mysql://${MYSQL_MASTER_SERVICE_HOST}:${MYSQL_MASTER_SERVICE_PORT:3306}/${MYSQL_MASTER_SERVICE_DB_NAME}?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=${MYSQL_MASTER_SERVICE_USER}
db.password=${MYSQL_MASTER_SERVICE_PASSWORD}
server.tomcat.accesslog.enabled=${TOMCAT_ACCESSLOG_ENABLED:false}
server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D
# default current work dir
server.tomcat.basedir=
## spring security config
### turn off security

nacos.security.ignore.urls=/,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/v1/auth/login,/v1/console/health/**,/v1/cs/**,/v1/ns/**,/v1/cmdb/**,/actuator/**,/v1/console/server/**
# metrics for elastic search
management.metrics.export.elastic.enabled=false
management.metrics.export.influx.enabled=false

nacos.naming.distro.taskDispatchThreadCount=10
nacos.naming.distro.taskDispatchPeriod=200
nacos.naming.distro.batchSyncKeyCount=1000
nacos.naming.distro.initDataRatio=0.9
nacos.naming.distro.syncRetryDelay=5000
nacos.naming.data.warmup=true

MySQL PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nacos-mysql-pvc
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: rook-ceph-block
  resources:
    requests:
      storage: 5Gi

MySQL Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nacos-mysql
spec:
  selector:
    matchLabels:
      app: nacos-mysql
  template:
    metadata:
      labels:
        app: nacos-mysql
    spec:
      containers:
      - name: nacos-mysql
        image: nacos/nacos-mysql-master:latest
        resources:
          limits:
            memory: "1024Mi"
            cpu: "1000m"
          requests:
            memory: "512Mi"
        ports:
        - containerPort: 3306
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: "root"
        - name: MYSQL_USER
          value: "nacos"
        - name: MYSQL_PASSWORD
          value: "nacos"
        - name: MYSQL_REPLICATION_USER
          value: 'nacos_ru'
        - name: MYSQL_REPLICATION_PASSWORD
          value: 'nacos_ru'
        volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
          subPath: mysql
          readOnly: false
      volumes:
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: nacos-mysql-pvc
---
apiVersion: v1
kind: Service
metadata:
  name: nacos-mysql
  labels:
    name: nacos-mysql
spec:
  selector:
    app: nacos-mysql
  ports:
  - name mysql-remote
     port: 3306

nacos PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nacos-server-plugindir
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: rook-ceph-block
  resources:
    requests:
      storage: 5Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nacos-server-datadir
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: rook-ceph-block
  resources:
    requests:
      storage: 5Gi

nacos deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nacos-server
spec:
  selector:
    matchLabels:
      app: nacos-server
  template:
    metadata:
      labels:
        app: nacos-server
    spec:
      containers:
      - name: nacos-server
        image: registry.cn-hangzhou.aliyuncs.com/private/nacos-server:standalone-1.0
        resources:
          limits:
            memory: "640Mi"
            cpu: "500m"
          requests:
            memory: "256Mi"
        ports:
        - containerPort: 8848
        env:
          - name: MYSQL_MASTER_SERVICE_DB_NAME
            value: "nacos_devtest"
          - name: MYSQL_MASTER_SERVICE_PORT
            value: "3306"
          - name: MYSQL_MASTER_SERVICE_USER
            value: "nacos"
          - name: MYSQL_MASTER_SERVICE_PASSWORD
            value: "nacos"
          - name: MYSQL_MASTER_SERVICE_HOST
            value: "nacos-mysql"
          - name: NACOS_SERVER_PORT
            value: "8848"
          - name: PREFER_HOST_MODE
            value: "hostname"
        readinessProbe:
          httpGet:
            port: 8848
            path: /nacos/v1/console/health/readiness
          initialDelaySeconds: 60
          timeoutSeconds: 3
        livenessProbe:
          httpGet:
            port: 8848
            path: /nacos/v1/console/health/liveness
          initialDelaySeconds: 60
          timeoutSeconds: 3
        volumeMounts:
          - name: plugindir
            mountPath: /home/nacos/plugins/peer-finder
          - name: datadir
            mountPath: /home/nacos/data
      volumes:
      - name: plugindir
        persistentVolumeClaim:
          claimName: nacos-server-plugindir
      - name: datadir
        persistentVolumeClaim:
          claimName: nacos-server-datadir
---
apiVersion: v1
kind: Service
metadata:
  name: nacos-server
  labels:
    name: nacos-server
spec:
  selector:
    app: nacos-server
  ports:
  - name: nacos-client
    port: 8848
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