用K8S部署高可用NACOS集群
我们先来单点部署NACOS服务:apiVersion: v1
kind: Service
metadata:
name: nacos
namespace: {namespace}
labels:
app: nacos
spec:
ports:
- protocol: TCP
port: 8848
targetPort: 8848
name: nacos-http
selector:
app: nacos
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: nacos
namespace: {namespace}
spec:
serviceName: nacos
selector:
matchLabels:
app: nacos
replicas: 1
template:
metadata:
labels:
app: nacos
spec:
containers:
- name: nacos
image: nacos/nacos-server:2.0.1
resources:
requests:
memory: "1024Mi"
cpu: "256m"
limits:
memory: "2048Mi"
cpu: "512m"
ports:
- containerPort: 8848
name: nacos-http
env:
- name: MODE
value: "standalone" 我们用集群的方式部署：
1.我们要准备好NFS服务器,建好PV和PVC
apiVersion: v1
kind: Namespace
metadata:
name: {namespace}
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: nfs-pv-{namespace}
labels:
pv: nfs-pv-{namespace}
annotations:
volume.beta.kubernetes.io/mount-options: "noatime,nodiratime,noresvport,nolock,proto=udp,rsize=1048576,wsize=1048576,hard"
spec:
capacity:
storage: 100Gi
accessModes:
- ReadWriteMany
persistentVolumeReclaimPolicy: Retain
nfs:
path: /nfs/{namespace}
server: 192.168.0.2
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: nfs-pvc
namespace: {namespace}
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 100Gi
selector:
matchLabels:
pv: nfs-pv-{namespace} 2.准备好数据库，我们集群里面是有数据库，这里我就不做配置直接使用，只是导入数据库而已
数据库的地址: mysql
数据库名称: nacos
数据库的账号: root
数据库的密码: 123456
然后导入https://github.com/alibaba/nacos/blob/develop/distribution/conf/nacos-mysql.sql
3.创建配置文件
apiVersion: v1
kind: ConfigMap
metadata:
name: nacos-cm
namespace: {namespace}
data:
mysql.db.name: "nacos"
mysql.db.host: "mysql"
mysql.port: "3306"
mysql.user: "root"
mysql.password: "123456" 4.创建部署文件
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: nacos
namespace: {namespace}
spec:
serviceName: nacos-headless
selector:
matchLabels:
app: nacos
replicas: 3
template:
metadata:
labels:
app: nacos
spec:
initContainers:
- name: peer-finder-plugin-install
image: nacos/nacos-peer-finder-plugin:1.1
imagePullPolicy: Always
volumeMounts:
- mountPath: /home/nacos/plugins/peer-finder
name: nacos-data
subPath: peer-finder
containers:
- name: nacos
image: nacos/nacos-server:2.0.1
resources:
requests:
memory: "1024Mi"
cpu: "256m"
limits:
memory: "2048Mi"
cpu: "512m"
ports:
- containerPort: 8848
name: nacos-http
- containerPort: 9848
name: nacos-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.db.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: NACOS_SERVER_PORT
value: "8848"
- name: NACOS_APPLICATION_PORT
value: "8848"
- name: PREFER_HOST_MODE
value: "hostname"
- name: NACOS_SERVERS
value: "nacos-0.nacos-headless.{namespace}.svc.cluster.local:8848 nacos-1.nacos-headless.{namespace}.svc.cluster.local:8848 nacos-2.nacos-headless.{namespace}.svc.cluster.local:8848"
volumeMounts:
- name: nacos-data
mountPath: /home/nacos/plugins/peer-finder
subPath: peer-finder
- name: nacos-data
mountPath: /home/nacos/data
subPath: data
- name: nacos-data
mountPath: /home/nacos/logs
subPath: logs
volumes:
- name: nacos-data
persistentVolumeClaim:
claimName: nfs-pvc 5.创建服务
apiVersion: v1
kind: Service
metadata:
name: nacos-headless
namespace: {namespace}
labels:
app: nacos
annotations:
service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
spec:
ports:
- protocol: TCP
port: 8848
targetPort: 8848
name: nacos-http
- protocol: TCP
port: 9848
targetPort: 9848
name: nacos-rpc
- protocol: TCP
port: 9849
targetPort: 9849
name: raft-rpc
- protocol: TCP
port: 7848
targetPort: 7848
name: old-raft-rpc
clusterIP: None
selector:
app: nacos
---
apiVersion: v1
kind: Service
metadata:
name: nacos
namespace: {namespace}
labels:
app: nacos
annotations:
service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
spec:
ports:
- protocol: TCP
port: 8848
targetPort: 8848
name: nacos-http
- protocol: TCP
port: 9848
targetPort: 9848
name: nacos-rpc
- protocol: TCP
port: 9849
targetPort: 9849
name: raft-rpc
- protocol: TCP
port: 7848
targetPort: 7848
name: old-raft-rpc
selector:
app: nacos 以上文章参考https://github.com/nacos-group/nacos-k8s
只是nacos-k8s这个里面有个坑，就是缺了
- name: MYSQL_SERVICE_HOST
valueFrom:
configMapKeyRef:
name: nacos-cm
key: mysql.db.host
同时为方便集群访问，我这里建立一个nacos服务直接访问集群
以上需要将{namespace}修改为自己的命名空间
页:
[1]