在Kubernetes上部署Nacos
<p>这里使用的是外部 mysql 数据库，所以没有使用官方提供的 mysql 和存储方案。</p><p>1、clone 项目</p>
<pre><code class="language-shell">git clone https://github.com/nacos-group/nacos-k8s.git
</code></pre>
<p>2、修改 yaml 文件，这里要注意 NACOS_SERVERS 的格式</p>
<pre><code class="language-shell">vim nacos-k8s/deploy/nacos/nacos-quick-start.yaml
</code></pre>
<pre><code class="language-yaml">---
# 添加一个 namespace
apiVersion: v1
kind: Namespace
metadata:
name: nacos
---
apiVersion: v1
kind: Service
metadata:
name: nacos-headless
namespace: nacos
labels:
app: nacos-headless
spec:
type: NodePort
ports:
- port: 8848
name: server
targetPort: 8848
nodePort: 30112 # 添加 nodePort 曝光控制台
- port: 9848
name: client-grpc
targetPort: 9848
nodePort: 31112 # 客户端gRPC请求服务端端口，用于客户端向服务端发起连接和请求
- port: 9849
name: raft-grpc
targetPort: 9849
nodePort: 31113 # 服务端gRPC请求服务端端口，用于服务间同步等
- port: 7848
name: old-raft-rpc
targetPort: 7848 # 兼容1.4.x版本的选举端口
selector:
app: nacos
---
apiVersion: v1
kind: ConfigMap
metadata:
name: nacos-cm
namespace: nacos
data:
mysql.db.host: "192.168.10.4" # 添加外部 mysql 访问地址
mysql.db.name: "nacos_config"
mysql.port: "3306"
mysql.user: "nacos"
mysql.password: "china801"
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: nacos
namespace: nacos
spec:
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-headless
topologyKey: "kubernetes.io/hostname"
containers:
- name: nacos
imagePullPolicy: Always
image: nacos/nacos-server:latest
resources:
requests:
memory: "2Gi"
cpu: "500m"
ports:
- containerPort: 8848
name: client
- containerPort: 9848
name: client-rpc
- containerPort: 9849
name: raft-rpc
- containerPort: 7848
name: old-raft-rpc
env:
- name: NACOS_REPLICAS
value: "3"
- name: MYSQL_SERVICE_DB_NAME
valueFrom:
configMapKeyRef:
name: nacos-cm
key: mysql.db.name
- name: MYSQL_SERVICE_HOST # 添加 mysql 访问地址的环境变量
valueFrom:
configMapKeyRef:
name: nacos-cm
key: mysql.db.host
- 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: PREFER_HOST_MODE
value: "hostname"
- name: NACOS_SERVERS
value: "nacos-0.nacos-headless.nacos.svc.cluster.local:8848 nacos-1.nacos-headless.nacos.svc.cluster.local:8848 nacos-2.nacos-headless.nacos.svc.cluster.local:8848" # 修改 namespace 名称
selector:
matchLabels:
app: nacos
</code></pre>
<p>3、部署 nacos</p>
<pre><code class="language-shell">kubectl apply -f nacos-quick-start.yaml
</code></pre>
<p>4、查看服务状态</p>
<pre><code class="language-shell">kubectl get po -n nacos
</code></pre>
<p>正常情况效果如下：</p>
<p><img src="https://img2020.cnblogs.com/blog/1005945/202006/1005945-20200612155304812-90182665.png"></p>
<p>参考文档</p>
<ul>
<li>https://nacos.io/zh-cn/docs/cluster-mode-quick-start.html</li>
<li>https://nacos.io/zh-cn/docs/use-nacos-with-kubernetes.html</li>
<li>https://hub.docker.com/r/nacos/nacos-server</li>
<li>https://github.com/nacos-group/nacos-k8s/blob/master/README-CN.md</li>
<li>https://github.com/alibaba/spring-cloud-alibaba/wiki/Nacos-config</li>
</ul><br><br>
来源：https://www.cnblogs.com/keithtt/p/13099918.html
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