830 lines
21 KiB
Markdown
830 lines
21 KiB
Markdown
<h1><center>Nacos 实战</center></h1>
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作者：行癫（盗版必究）
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------
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## 一：Nacos简介
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#### 1.简介
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Nacos是 Dynamic Naming and Configuration Service的首字母简称，一个更易于构建云原生应用的动态服务发现、配置管理和服务管理平台；Nacos 致力于帮助您发现、配置和管理微服务；Nacos 提供了一组简单易用的特性集，快速实现动态服务发现、服务配置、服务元数据及流量管理；Nacos 更敏捷和容易地构建、交付和管理微服务平台；Nacos 是构建以“服务”为中心的现代应用架构 (例如微服务范式、云原生范式) 的服务基础设施
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<img src="https://xingdian-image.oss-cn-beijing.aliyuncs.com/xingdian-image/image-20230718210341659.png" alt="image-20230718210341659" style="zoom:50%;" />
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## 二：基于Kubernetes部署Nacos
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#### 1.环境部署
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kubernetes集群环境：
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nacos版本：2.2.0
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#### 2.Nacos部署
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##### 数据持久化准备
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NFS-Server部署：
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```shell
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[root@nfs-server ~]# yum -y install nfs-utils
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[root@nfs-server ~]# systemctl restart nfs
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```
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创建共享目录/data/nfs-share（Nacos使用）
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创建共享目录/data/mysql（Mysql使用）
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共享脚本：
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```shell
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[root@xingdiancloud nacos]# cat nfs.sh
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#!/bin/bash
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read -p "请输入您要创建的共享目录：" dir
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if [ -d $dir ];then
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echo "请重新输入共享目录: "
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read again_dir
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mkdir $again_dir -p
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echo "共享目录创建成功"
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read -p "请输入共享对象：" ips
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echo "$again_dir ${ips}(rw,sync,no_root_squash)" >> /etc/exports
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xingdian=`cat /etc/exports |grep "$again_dir" |wc -l`
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if [ $xingdian -eq 1 ];then
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echo "成功配置共享"
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exportfs -rv >/dev/null
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exit
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else
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exit
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fi
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else
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mkdir $dir -p
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echo "共享目录创建成功"
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read -p "请输入共享对象：" ips
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echo "$dir ${ips}(rw,sync,no_root_squash)" >> /etc/exports
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xingdian=`cat /etc/exports |grep "$dir" |wc -l`
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if [ $xingdian -eq 1 ];then
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echo "成功配置共享"
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exportfs -rv >/dev/null
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exit
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else
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exit
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fi
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fi
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```
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例如：
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##### 部署Nacos-Mysql服务
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```yaml
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[root@xingdiancloud mysql]# cat mysql-nfs.yaml
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: mysql
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labels:
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name: mysql
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spec:
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replicas: 1
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revisionHistoryLimit: 5
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selector:
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matchLabels:
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name: mysql
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template:
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metadata:
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labels:
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name: mysql
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spec:
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containers:
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- name: mysql
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image: nacos/nacos-mysql:5.7
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ports:
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- containerPort: 3306
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volumeMounts:
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- name: mysql-data
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mountPath: /var/lib/mysql
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env:
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- name: MYSQL_ROOT_PASSWORD
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value: "root"
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- name: MYSQL_DATABASE
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value: "nacos_devtest"
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- name: MYSQL_USER
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value: "nacos"
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- name: MYSQL_PASSWORD
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value: "nacos"
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volumes:
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- name: mysql-data
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nfs:
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server: 10.9.12.250
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path: /opt/mysql_nacos
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: mysql
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labels:
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name: mysql
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spec:
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ports:
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- port: 3306
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targetPort: 3306
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selector:
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name: mysql
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[root@xingdiancloud mysql]# kubectl create -f mysql-nfs.yaml
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```
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验证：
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##### 部署NFS-Client
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注意：由于本集群采用Kubernetes 1.27.3版本；故NFS-Client采用4.0.2版本；低版本Kubernetes采用Nacos提供即可
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创建RBAC：
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```yaml
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[root@xingdiancloud deploy]# cat rbac.yaml
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: nfs-client-provisioner
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# replace with namespace where provisioner is deployed
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namespace: default
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---
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kind: ClusterRole
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: nfs-client-provisioner-runner
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rules:
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- apiGroups: [""]
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resources: ["nodes"]
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verbs: ["get", "list", "watch"]
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- apiGroups: [""]
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resources: ["persistentvolumes"]
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verbs: ["get", "list", "watch", "create", "delete"]
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- apiGroups: [""]
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resources: ["persistentvolumeclaims"]
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verbs: ["get", "list", "watch", "update"]
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- apiGroups: ["storage.k8s.io"]
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resources: ["storageclasses"]
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verbs: ["get", "list", "watch"]
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- apiGroups: [""]
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resources: ["events"]
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verbs: ["create", "update", "patch"]
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---
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kind: ClusterRoleBinding
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: run-nfs-client-provisioner
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subjects:
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- kind: ServiceAccount
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name: nfs-client-provisioner
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# replace with namespace where provisioner is deployed
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namespace: default
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roleRef:
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kind: ClusterRole
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name: nfs-client-provisioner-runner
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apiGroup: rbac.authorization.k8s.io
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---
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kind: Role
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: leader-locking-nfs-client-provisioner
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# replace with namespace where provisioner is deployed
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namespace: default
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rules:
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- apiGroups: [""]
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resources: ["endpoints"]
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verbs: ["get", "list", "watch", "create", "update", "patch"]
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---
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kind: RoleBinding
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: leader-locking-nfs-client-provisioner
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# replace with namespace where provisioner is deployed
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namespace: default
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subjects:
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- kind: ServiceAccount
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name: nfs-client-provisioner
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# replace with namespace where provisioner is deployed
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namespace: default
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roleRef:
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kind: Role
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name: leader-locking-nfs-client-provisioner
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apiGroup: rbac.authorization.k8s.io
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[root@xingdiancloud deploy]# kubectl create -f rbac.yaml
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```
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指定NFS-Server的地址：10.9.12.250；修改共享目录
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```yaml
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[root@xingdiancloud deploy]# cat deployment.yaml
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: nfs-client-provisioner
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labels:
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app: nfs-client-provisioner
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# replace with namespace where provisioner is deployed
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namespace: default
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spec:
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replicas: 1
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strategy:
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type: Recreate
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selector:
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matchLabels:
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app: nfs-client-provisioner
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template:
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metadata:
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labels:
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app: nfs-client-provisioner
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spec:
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serviceAccountName: nfs-client-provisioner
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containers:
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- name: nfs-client-provisioner
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image: 10.9.12.201/xingdian/nfs:v4.0.2
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volumeMounts:
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- name: nfs-client-root
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mountPath: /persistentvolumes
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env:
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- name: PROVISIONER_NAME
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value: fuseim.pri/ifs
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- name: NFS_SERVER
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value: 10.9.12.250
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- name: NFS_PATH
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value: /data/nfs-share
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volumes:
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- name: nfs-client-root
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nfs:
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server: 10.9.12.250
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path: /data/nfs-share
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[root@xingdiancloud deploy]# kubernetes create -f deployment.yaml
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```
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创建storageclass：
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```yaml
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[root@xingdiancloud deploy]# cat class.yaml
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apiVersion: storage.k8s.io/v1
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kind: StorageClass
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metadata:
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name: managed-nfs-storage
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provisioner: fuseim.pri/ifs
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parameters:
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archiveOnDelete: "false"
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[root@xingdiancloud deploy]# kubernetes create -f class.yaml
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```
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验证：
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##### 部署Nacos服务
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注意：部署nacos采用statefulset方式
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```yaml
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[root@xingdiancloud nacos]# cat nacos-pvc-nfs.yaml
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: nacos-headless
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labels:
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app: nacos
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spec:
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publishNotReadyAddresses: true
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ports:
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- port: 8848
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name: server
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targetPort: 8848
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- port: 9848
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name: client-rpc
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targetPort: 9848
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- port: 9849
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name: raft-rpc
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targetPort: 9849
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## 兼容1.4.x版本的选举端口
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- port: 7848
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name: old-raft-rpc
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targetPort: 7848
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clusterIP: None
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selector:
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app: nacos
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---
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: nacos-cm
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data:
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mysql.host: "mysql"
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mysql.db.name: "nacos_devtest"
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mysql.port: "3306"
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mysql.user: "nacos"
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mysql.password: "nacos"
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---
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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: nacos
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spec:
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podManagementPolicy: Parallel
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serviceName: nacos-headless
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replicas: 3
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template:
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metadata:
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labels:
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app: nacos
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annotations:
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pod.alpha.kubernetes.io/initialized: "true"
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spec:
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affinity:
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podAntiAffinity:
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requiredDuringSchedulingIgnoredDuringExecution:
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- labelSelector:
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matchExpressions:
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- key: "app"
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operator: In
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values:
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- nacos
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topologyKey: "kubernetes.io/hostname"
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serviceAccountName: nfs-client-provisioner
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initContainers:
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- name: peer-finder-plugin-install
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image: nacos/nacos-peer-finder-plugin:1.1
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imagePullPolicy: Always
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volumeMounts:
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- mountPath: /home/nacos/plugins/peer-finder
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name: data
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subPath: peer-finder
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containers:
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- name: nacos
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imagePullPolicy: Always
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image: nacos/nacos-server:v2.2.0
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resources:
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requests:
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memory: "2Gi"
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cpu: "500m"
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ports:
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- containerPort: 8848
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name: client-port
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- containerPort: 9848
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name: client-rpc
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- containerPort: 9849
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name: raft-rpc
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- containerPort: 7848
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name: old-raft-rpc
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env:
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- name: NACOS_REPLICAS
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value: "3"
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- name: SERVICE_NAME
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value: "nacos-headless"
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- name: DOMAIN_NAME
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value: "cluster.local"
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- name: POD_NAMESPACE
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valueFrom:
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fieldRef:
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apiVersion: v1
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fieldPath: metadata.namespace
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- name: MYSQL_SERVICE_HOST
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valueFrom:
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configMapKeyRef:
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name: nacos-cm
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key: mysql.host
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- name: MYSQL_SERVICE_DB_NAME
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valueFrom:
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configMapKeyRef:
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name: nacos-cm
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key: mysql.db.name
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- name: MYSQL_SERVICE_PORT
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valueFrom:
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configMapKeyRef:
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name: nacos-cm
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key: mysql.port
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- name: MYSQL_SERVICE_USER
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valueFrom:
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configMapKeyRef:
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name: nacos-cm
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key: mysql.user
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- name: MYSQL_SERVICE_PASSWORD
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valueFrom:
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configMapKeyRef:
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name: nacos-cm
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key: mysql.password
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- name: SPRING_DATASOURCE_PLATFORM
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value: "mysql"
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- name: NACOS_SERVER_PORT
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value: "8848"
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- name: NACOS_APPLICATION_PORT
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value: "8848"
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- name: PREFER_HOST_MODE
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value: "hostname"
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volumeMounts:
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- name: data
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mountPath: /home/nacos/plugins/peer-finder
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subPath: peer-finder
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- name: data
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mountPath: /home/nacos/data
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subPath: data
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- name: data
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mountPath: /home/nacos/logs
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subPath: logs
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volumeClaimTemplates:
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- metadata:
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name: data
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annotations:
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volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
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spec:
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accessModes: [ "ReadWriteMany" ]
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resources:
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requests:
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storage: 20Gi
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selector:
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matchLabels:
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app: nacos
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[root@xingdiancloud nacos]# kubectl create -f nacos-pvc-nfs.yaml
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```
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验证：
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##### 部署外部访问
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注意：
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为了安全期间；是不应该进行外部暴露，但是在实验环境为了配置nacos，需要单独创建Services
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此处固定了ClusterIP，防止因为重启改变
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同时暴露8848；9848
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注意selector；否则无法绑定Nacos服务
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```yaml
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[root@xingdiancloud nacos]# cat svc.yaml
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apiVersion: v1
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kind: Service
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metadata:
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labels:
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app: nacos
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name: nacos-ss
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spec:
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clusterIP: 10.96.211.199
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clusterIPs:
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- 10.96.211.199
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ports:
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- name: imdgss
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port: 8848
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protocol: TCP
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targetPort: 8848
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nodePort: 30050
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- name: xingdian
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port: 9848
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protocol: TCP
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targetPort: 9848
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nodePort: 30051
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selector:
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app: nacos
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type: NodePort
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[root@xingdiancloud nacos]# kubectl create -f svc.yaml
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```
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访问地址：IP+端口/nacos
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用户名：nacos
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密码：nacos
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##### 配置项目数据库
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```yaml
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[root@xingdiancloud mysql]# cat mysql-cloud.yaml
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: mysql-cloud
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labels:
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name: mysql-cloud
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spec:
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replicas: 1
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revisionHistoryLimit: 5
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selector:
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matchLabels:
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name: mysql-cloud
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template:
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metadata:
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labels:
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name: mysql-cloud
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spec:
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containers:
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- name: mysql
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image: nacos/mysql:5.7
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ports:
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- containerPort: 3306
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volumeMounts:
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- name: mysql-data-1
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mountPath: /var/lib/mysql
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env:
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- name: MYSQL_ROOT_PASSWORD
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value: "123456"
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- name: MYSQL_DATABASE
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value: "cloud"
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- name: MYSQL_USER
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value: "cloud"
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- name: MYSQL_PASSWORD
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value: "123456"
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volumes:
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- name: mysql-data-1
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nfs:
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server: 10.9.12.250
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path: /opt/mysql
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: mysql-cloud
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labels:
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name: mysql-cloud
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spec:
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type: NodePort
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ports:
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- port: 3306
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targetPort: 3306
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nodePort: 30052
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selector:
|
||
name: mysql-cloud
|
||
[root@xingdiancloud mysql]# kubectl create -f mysql-cloud.yaml
|
||
```
|
||
|
||
#### 3.配置Nacos
|
||
|
||
注意：此处的配置为了完成以下应用
|
||
|
||
##### 创建Namespaces
|
||
|
||
|
||
|
||
备用namespacesID
|
||
|
||
|
||
|
||
##### 创建配置Configurations
|
||
|
||
|
||
|
||
|
||
|
||
注意：Data ID 来自下图中的标注
|
||
|
||
|
||
|
||
|
||
|
||
#### 4.项目准备
|
||
|
||
##### 项目源码地址
|
||
|
||
https://gitee.com/kunyun_code/cloud_customer.git
|
||
|
||
https://gitee.com/kunyun_code/cloud_provider.git
|
||
|
||
修改项目中nacos地址，数据库连接信息
|
||
|
||
##### 项目构建
|
||
|
||
略
|
||
|
||
##### 构建镜像Dockerfile文件
|
||
|
||
```shell
|
||
[root@xingdiancloud nacos]# cat Dockerfile
|
||
FROM 10.9.12.201/xingdian/centos:7
|
||
ADD jdk-8u211-linux-x64.tar.gz /usr/local/
|
||
ENV JAVA_HOME=/usr/local/java
|
||
ENV PATH=$JAVA_HOME/bin:$PATH
|
||
ENV CATALINA_HOME=/usr/local/tomcat
|
||
ENV export JAVA_HOME PATH
|
||
WORKDIR /usr/local
|
||
RUN mv jdk1.8.0_211 java
|
||
COPY cloud_customer-1.0-SNAPSHOT.jar /
|
||
EXPOSE 8181
|
||
CMD java -Xms128m -Xmx512m -jar /cloud_customer-1.0-SNAPSHOT.jar
|
||
```
|
||
|
||
```shell
|
||
[root@xingdiancloud nacos]# cat Dockerfile_1
|
||
FROM 10.9.12.201/xingdian/centos:7
|
||
ADD jdk-8u211-linux-x64.tar.gz /usr/local/
|
||
ENV JAVA_HOME=/usr/local/java
|
||
ENV PATH=$JAVA_HOME/bin:$PATH
|
||
ENV export JAVA_HOME PATH
|
||
RUN echo "ulimit -n 65535" >> /etc/profile
|
||
RUN source /etc/profile
|
||
WORKDIR /usr/local
|
||
RUN mv jdk1.8.0_211 java
|
||
COPY cloud_provider-1.0-SNAPSHOT.jar /
|
||
EXPOSE 8180
|
||
CMD java -jar /cloud_provider-1.0-SNAPSHOT.jar
|
||
```
|
||
|
||
#### 5.项目发布
|
||
|
||
##### 项目发布yaml文件
|
||
|
||
```yaml
|
||
[root@xingdiancloud nacos]# cat cloud_1.yaml
|
||
---
|
||
apiVersion: apps/v1
|
||
kind: Deployment
|
||
metadata:
|
||
annotations: {}
|
||
labels:
|
||
k8s.kuboard.cn/name: cloud-1
|
||
name: cloud-1
|
||
namespace: default
|
||
resourceVersion: '3280839'
|
||
spec:
|
||
progressDeadlineSeconds: 600
|
||
replicas: 1
|
||
revisionHistoryLimit: 10
|
||
selector:
|
||
matchLabels:
|
||
k8s.kuboard.cn/name: cloud-1
|
||
strategy:
|
||
rollingUpdate:
|
||
maxSurge: 25%
|
||
maxUnavailable: 25%
|
||
type: RollingUpdate
|
||
template:
|
||
metadata:
|
||
annotations:
|
||
kubectl.kubernetes.io/restartedAt: '2023-07-17T18:16:19+08:00'
|
||
creationTimestamp: null
|
||
labels:
|
||
k8s.kuboard.cn/name: cloud-1
|
||
spec:
|
||
containers:
|
||
- image: '10.9.12.201/xingdian/cloud-customer:v6'
|
||
imagePullPolicy: IfNotPresent
|
||
name: cloud
|
||
ports:
|
||
- containerPort: 8181
|
||
name: http
|
||
protocol: TCP
|
||
resources: {}
|
||
terminationMessagePath: /dev/termination-log
|
||
terminationMessagePolicy: File
|
||
dnsPolicy: ClusterFirst
|
||
restartPolicy: Always
|
||
schedulerName: default-scheduler
|
||
securityContext: {}
|
||
terminationGracePeriodSeconds: 30
|
||
|
||
---
|
||
apiVersion: v1
|
||
kind: Service
|
||
metadata:
|
||
annotations: {}
|
||
labels:
|
||
k8s.kuboard.cn/name: cloud-1
|
||
name: cloud-1
|
||
namespace: default
|
||
resourceVersion: '3087574'
|
||
spec:
|
||
clusterIP: 10.99.204.46
|
||
clusterIPs:
|
||
- 10.99.204.46
|
||
externalTrafficPolicy: Cluster
|
||
internalTrafficPolicy: Cluster
|
||
ipFamilies:
|
||
- IPv4
|
||
ipFamilyPolicy: SingleStack
|
||
ports:
|
||
- name: rf5cws
|
||
nodePort: 30053
|
||
port: 8181
|
||
protocol: TCP
|
||
targetPort: 8181
|
||
selector:
|
||
k8s.kuboard.cn/name: cloud-1
|
||
sessionAffinity: ClientIP
|
||
sessionAffinityConfig:
|
||
clientIP:
|
||
timeoutSeconds: 10800
|
||
type: NodePort
|
||
```
|
||
|
||
```shell
|
||
[root@xingdiancloud nacos]# cat cloud_2.yaml
|
||
---
|
||
apiVersion: apps/v1
|
||
kind: Deployment
|
||
metadata:
|
||
annotations: {}
|
||
labels:
|
||
k8s.kuboard.cn/name: cloud-2
|
||
name: cloud-2
|
||
namespace: default
|
||
resourceVersion: '3437643'
|
||
spec:
|
||
progressDeadlineSeconds: 600
|
||
replicas: 1
|
||
revisionHistoryLimit: 10
|
||
selector:
|
||
matchLabels:
|
||
k8s.kuboard.cn/name: cloud-2
|
||
strategy:
|
||
rollingUpdate:
|
||
maxSurge: 25%
|
||
maxUnavailable: 25%
|
||
type: RollingUpdate
|
||
template:
|
||
metadata:
|
||
creationTimestamp: null
|
||
labels:
|
||
k8s.kuboard.cn/name: cloud-2
|
||
spec:
|
||
containers:
|
||
- image: '10.9.12.201/xingdian/cloud_provider:v4'
|
||
imagePullPolicy: IfNotPresent
|
||
name: cloud-2
|
||
ports:
|
||
- containerPort: 8180
|
||
name: http
|
||
protocol: TCP
|
||
resources: {}
|
||
terminationMessagePath: /dev/termination-log
|
||
terminationMessagePolicy: File
|
||
dnsPolicy: ClusterFirst
|
||
restartPolicy: Always
|
||
schedulerName: default-scheduler
|
||
securityContext: {}
|
||
terminationGracePeriodSeconds: 30
|
||
|
||
---
|
||
apiVersion: v1
|
||
kind: Service
|
||
metadata:
|
||
annotations: {}
|
||
labels:
|
||
k8s.kuboard.cn/name: cloud-2
|
||
name: cloud-2
|
||
namespace: default
|
||
resourceVersion: '3276493'
|
||
spec:
|
||
clusterIP: 10.98.2.186
|
||
clusterIPs:
|
||
- 10.98.2.186
|
||
externalTrafficPolicy: Cluster
|
||
internalTrafficPolicy: Cluster
|
||
ipFamilies:
|
||
- IPv4
|
||
ipFamilyPolicy: SingleStack
|
||
ports:
|
||
- name: dwxakr
|
||
nodePort: 30055
|
||
port: 8180
|
||
protocol: TCP
|
||
targetPort: 8180
|
||
selector:
|
||
k8s.kuboard.cn/name: cloud-2
|
||
sessionAffinity: ClientIP
|
||
sessionAffinityConfig:
|
||
clientIP:
|
||
timeoutSeconds: 10800
|
||
type: NodePort
|
||
```
|
||
|
||
##### 发布
|
||
|
||
```shell
|
||
[root@xingdiancloud nacos]# kubectl create -f cloud_1.yaml
|
||
[root@xingdiancloud nacos]# kubectl create -f cloud_2.yaml
|
||
```
|
||
|
||
|
||
|
||
|
||
|
||
#### 6.项目接口调试
|
||
|
||
cloud-1测试接口：IP+端口/customer/version
|
||
|
||
|
||
|
||
cloud-2测试接口：IP+端口/customer/echo/任意字符串
|
||
|
||
 |