介绍

Nacos /nɑ:kəʊs/ 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，帮助您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 帮助您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。

准备条件

• Kubernetes 1.10+
• Helm v3
• PV provisioner support in the underlying infrastructure
  • 部署 openebs-lvmlocalpv
  • Kubernetes 使用 helm 部署 NFS Provisioner
• mysql
  • kubernetes deploy standalone mysql demo

创建数据库、用户名、导入表结构

$  mysql -h 192.168.23.21 -u root  -P 30006  -p'password'
mysql> create database nacos_config character set utf8;
mysql> create user 'nacos'@'%' identified by 'nacos';
mysql> grant all privileges ON nacos_config.* TO 'nacos'@'%';
mysql>use nacos_config;	

$ wget https://raw.githubusercontent.com/alibaba/nacos/develop/distribution/conf/mysql-schema.sql
$  mysql -h 192.168.23.21 -u root  -P 30006  -p'password' -D nacos_config < mysql-schema.sql
$  mysql -h 192.168.23.21 -u root  -P 30006  -p'password' -D nacos_config
mysql> show tables;
+------------------------+
| Tables_in_nacos_config |
+------------------------+
| config_info            |
| config_info_aggr       |
| config_info_beta       |
| config_info_tag        |
| config_tags_relation   |
| group_capacity         |
| his_config_info        |
| permissions            |
| roles                  |
| tenant_capacity        |
| tenant_info            |
| users                  |
+------------------------+
12 rows in set (0.00 sec)

定制 values.yaml

git clone https://github.com/nacos-group/nacos-k8s.git
cd nacos-k8s/helm
vim values.yaml

# Default values for nacos.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

global:
  mode: standalone
#  mode: cluster

############################nacos###########################
namespace: default
nacos:
  image:
    repository: nacos/nacos-server
    tag: latest
    pullPolicy: IfNotPresent
  plugin:
    enable: true
    image:
      repository: nacos/nacos-peer-finder-plugin
      tag: 1.1
      pullPolicy: IfNotPresent
  replicaCount: 1
  podManagementPolicy: Parallel
  domainName: cluster.local
  preferhostmode: hostname
  serverPort: 8848
  health:
    enabled: false
  storage:
    type: embedded
#    type: mysql
#    db:
#      host: localhost
#      name: nacos
#      port: 3306
#      username: usernmae
#      password: password
#      param: characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false

persistence:
  enabled: false
  data:
    accessModes:
      - ReadWriteOnce
    storageClassName: manual
    resources:
      requests:
        storage: 5Gi


service:
  #type: ClusterIP
  type: NodePort
  port: 8848
  nodePort: 30000


ingress:
  enabled: false
  # apiVersion: extensions/v1beta1
  apiVersion: networking.k8s.io/v1
  annotations: { }
    # kubernetes.io/ingress.class: nginx
    # kubernetes.io/tls-acme: "true"
    # For Kubernetes >= 1.18 you should specify the ingress-controller via the field ingressClassName
    # See https://kubernetes.io/blog/2020/04/02/improvements-to-the-ingress-api-in-kubernetes-1.18/#specifying-the-class-of-an-ingress
    # ingressClassName: nginx
  ingressClassName: "nginx"
  hosts:
    - host: nacos.example.com
      #paths: [ ]

  tls: [ ]
  #  - secretName: chart-example-tls
  #    hosts:
  #      - chart-example.local

resources:
  # We usually recommend not to specify default resources and to leave this as a conscious
  # choice for the user. This also increases chances charts run on environments with little
  # resources, such as Minikube. If you do want to specify resources, uncomment the following
  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
  # limits:
  #   cpu: 100m
  #   memory: 128Mi
  requests:
    cpu: 500m
    memory: 2Gi
annotations: { }

nodeSelector: { }

tolerations: [ ]

affinity: { }

部署

helm  install  nacos  ./

输出：

NAME: nacos
LAST DEPLOYED: Mon Sep  4 20:10:59 2023
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
1. Get the application URL by running these commands:
  export NODE_PORT=$(kubectl get --namespace default -o jsonpath="{.spec.ports[0].nodePort}" services  nacos-cs)
  export NODE_IP=$(kubectl get nodes --namespace default -o jsonpath="{.items[0].status.addresses[0].address}")
  echo http://$NODE_IP:$NODE_PORT/nacos
2. MODE:
   standalone: you need to modify replicaCount in the values.yaml, .Values.replicaCount=1
   cluster: kubectl scale sts default-nacos --replicas=3

检查

$ kubectl get all
NAME          READY   STATUS    RESTARTS   AGE
pod/nacos-0   1/1     Running   0          8m36s

NAME                 TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                       AGE
service/kubernetes   ClusterIP   10.96.0.1       <none>        443/TCP                                                       48d
service/nacos-cs     NodePort    10.99.163.228   <none>        8848:32575/TCP,9848:30113/TCP,9849:30338/TCP,7848:30000/TCP   8m36s

NAME                     READY   AGE
statefulset.apps/nacos   1/1     8m37s

登陆

执行：

  export NODE_PORT=$(kubectl get --namespace default -o jsonpath="{.spec.ports[0].nodePort}" services  nacos-cs)
  export NODE_IP=$(kubectl get nodes --namespace default -o jsonpath="{.items[0].status.addresses[0].address}")
  echo http://$NODE_IP:$NODE_PORT/nacos

访问：https://192.168.23.14:
用户：nacos
密码：nacos