kubernetes docker java BS问题：k8s部署Nacos Could not resolve placeholder ‘NACOS

官网文档2.X

Kubernetes Nacos

Nacos镜像： nacos/nacos-server:latest

我按照官方文档执行到

验证Nacos节点启动成功

 然后pods一直重启,查看pod日志

这个参数怎么会少呢？

启动pod的Yaml文件

---

apiVersion: v1

kind: Service

metadata:

name: nacos-headless

labels:

app: nacos

spec:

publishNotReadyAddresses: true

ports:

- port: 8848

name: server

targetPort: 8848

- port: 9848

name: client-rpc

targetPort: 9848

- port: 9849

name: raft-rpc

targetPort: 9849

## 兼容1.4.x版本的选举端口

- port: 7848

name: old-raft-rpc

targetPort: 7848

clusterIP: None

selector:

app: nacos

---

apiVersion: v1

kind: ConfigMap

metadata:

name: nacos-cm

data:

mysql.host: "10.110.240.135"

mysql.db.name: "nacos_devtest"

mysql.port: "3306"

mysql.user: "nacos"

mysql.password: "nacos"

---

apiVersion: apps/v1

kind: StatefulSet

metadata:

name: nacos

spec:

podManagementPolicy: Parallel

serviceName: nacos-headless

replicas: 3

template:

metadata:

labels:

app: nacos

annotations:

pod.alpha.kubernetes.io/initialized: "true"

spec:

affinity:

podAntiAffinity:

requiredDuringSchedulingIgnoredDuringExecution:

- labelSelector:

matchExpressions:

- key: "app"

operator: In

values:

- nacos

topologyKey: "kubernetes.io/hostname"

serviceAccountName: nfs-client-provisioner

initContainers:

- name: peer-finder-plugin-install

image: nacos/nacos-peer-finder-plugin:1.1

imagePullPolicy: Always

volumeMounts:

- mountPath: /home/nacos/plugins/peer-finder

name: data

subPath: peer-finder

containers:

- name: nacos

imagePullPolicy: Always

image: nacos/nacos-server:latest

resources:

requests:

memory: "200m"

cpu: "500m"

ports:

- containerPort: 8848

name: client-port

- containerPort: 9848

name: client-rpc

- containerPort: 9849

name: raft-rpc

- containerPort: 7848

name: old-raft-rpc

env:

- name: NACOS_REPLICAS

value: "3"

- name: SERVICE_NAME

value: "nacos-headless"

- name: DOMAIN_NAME

value: "cluster.local"

- name: POD_NAMESPACE

valueFrom:

fieldRef:

apiVersion: v1

fieldPath: metadata.namespace

- name: MYSQL_SERVICE_HOST

valueFrom:

configMapKeyRef:

name: nacos-cm

key: mysql.host

- name: MYSQL_SERVICE_DB_NAME

valueFrom:

configMapKeyRef:

name: nacos-cm

key: mysql.db.name

- name: MYSQL_SERVICE_PORT

valueFrom:

configMapKeyRef:

name: nacos-cm

key: mysql.port

- name: MYSQL_SERVICE_USER

valueFrom:

configMapKeyRef:

name: nacos-cm

key: mysql.user

- name: MYSQL_SERVICE_PASSWORD

valueFrom:

configMapKeyRef:

name: nacos-cm

key: mysql.password

- name: SPRING_DATASOURCE_PLATFORM

value: "mysql"

- name: NACOS_SERVER_PORT

value: "8848"

- name: NACOS_APPLICATION_PORT

value: "8848"

- name: PREFER_HOST_MODE

value: "hostname"

volumeMounts:

- name: data

mountPath: /home/nacos/plugins/peer-finder

subPath: peer-finder

- name: data

mountPath: /home/nacos/data

subPath: data

- name: data

mountPath: /home/nacos/logs

subPath: logs

volumeClaimTemplates:

- metadata:

name: data

annotations:

volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"

spec:

accessModes: [ "ReadWriteMany" ]

resources:

requests:

storage: 20Gi

selector:

matchLabels:

app: nacos

尝试修改配置文件增加环境变量env:

-name: NACOS_AUTH_IDENTITY_KEY

  value: serverIdentity

但是依然无效

上面参数官方文档上有相关描述

Nacos Docker 快速开始

 尝试切换nacos镜像版本：v2.2.0   docker pull nacos/nacos-server:v2.2.0

然后在启动就这样了

第一种情况（没有执行sql初始化语句）的解决办法：

https://github.com/nacos-group/nacos-k8s/issues/205

在GitHub上找到了答案，感谢这位大佬

在前面的流程中，看到了这个sql的初始化语言，由于当时打开链接404就没有管了

这个文件已经不再这个地方了  

 nacos-k8s/nacos-mysql.sql at master · nacos-group/nacos-k8s · GitHubzz

执行SQL完成后，启动终于成功了！ 

 没有重启次数了

第二种（nacos-pvc-nfs.yaml配置的mysql service地址变更了）情况的解决办法：

原因：在nacos-pvc-nfs.yaml 文件中的mysql.host: "10.102.179.83" (msyql service地址)变更了，导致nacos启动时找不到数据库

修改mysql service 地址

参考文章

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