准备机器3台

• 192.168.1.160
• 192.168.1.161
• 192.168.1.162

docker安装

CentOS 7下安装Docker及基础操作

安装

mysql

• 基于docker安装mysql

  docker run \
  -p 3306:3306 \
  --name nacos-mysql \
  -v $PWD/conf:/etc/mysql/conf.d \
  -v $PWD/logs:/logs \
  -v $PWD/data:/var/lib/mysql \
  -v /etc/localtime:/etc/localtime:ro \
  -e TZ=Asia/Shanghai \
  -e MYSQL_ROOT_PASSWORD=root \
  -d mysql:5.7
  

• 初始化sql
  sql脚本入口: https://github.com/alibaba/nacos/blob/master/distribution/conf/nacos-mysql.sql

Nacos

• 创建Nacos的工作目录

  // 每个节点都创建
  mkdir -p /usr/local/docker/nacos-server
  mkdir -p /usr/local/docker/nacos-server/env
  mkdir -p /usr/local/docker/nacos-server/logs
  mkdir -p /usr/local/docker/nacos-server/init.d
  

• 调整custom.properties

  vim /usr/local/docker/nacos-server/init.d/custom.properties
  
  // 添加以下配置
  #spring.security.enabled=false
  #management.security=false
  #security.basic.enabled=false
  #nacos.security.ignore.urls=/**
  #management.metrics.export.elastic.host=http://localhost:9200
  # metrics for prometheus
  management.endpoints.web.exposure.include=*
  
  # metrics for elastic search
  #management.metrics.export.elastic.enabled=false
  #management.metrics.export.elastic.host=http://localhost:9200
  
  # metrics for influx
  #management.metrics.export.influx.enabled=false
  #management.metrics.export.influx.db=springboot
  #management.metrics.export.influx.uri=http://localhost:8086
  #management.metrics.export.influx.auto-create-db=true
  #management.metrics.export.influx.consistency=one
  #management.metrics.export.influx.compressed=true
  
  

• 调整nacos-hostname.env

  vim /usr/local/docker/nacos-server/env/nacos-hostname.env
  
  #nacos dev env
  # 首选主机模式
  PREFER_HOST_MODE=hostname
  # 当前主机的IP
  NACOS_SERVER_IP=192.168.1.160
  # 集群的各个节点
  NACOS_SERVERS=192.168.1.160:8848 192.168.1.161:8848 192.168.1.162:8848
  # 数据库的配置
  MYSQL_SERVICE_HOST=192.168.1.100
  MYSQL_SERVICE_DB_NAME=nacos
  MYSQL_SERVICE_PORT=3306
  MYSQL_SERVICE_USER=root
  MYSQL_SERVICE_PASSWORD=root
  
  # 从节点 这里就使用单节点测试,因此就不配置从节点
  #MYSQL_SLAVE_SERVICE_HOST=xxx 
  #MYSQL_SLAVE_SERVICE_PORT=3306
  
  # JVM参数 默认是2G 如果使用虚拟机,内存没有2G,就需要调整这里的参数,否则将无法启动
  JVM_XMS=256m
  JVM_XMX=256m
  JVM_XMN=256m
  

• 将配置文件拷贝到其他两台机器

  scp -r /usr/local/docker/nacos-server/env/nacos-hostname.env  root@192.168.1.161:/usr/local/docker/nacos-server/env/nacos-hostname.env
  scp -r /usr/local/docker/nacos-server/env/nacos-hostname.env  root@192.168.1.162:/usr/local/docker/nacos-server/env/nacos-hostname.env
  
  scp -r /usr/local/docker/nacos-server/init.d/custom.properties  root@192.168.1.161:/usr/local/docker/nacos-server/init.d/custom.properties
  scp -r /usr/local/docker/nacos-server/init.d/custom.properties  root@192.168.1.162:/usr/local/docker/nacos-server/init.d/custom.properties
  

• docker启动(3个节点)

  docker run \
  -p 8848:8848 \
  --restart=always \
  --name nacos-node \
  --env-file=/usr/local/docker/nacos-server/env/nacos-hostname.env \
  -v /usr/local/docker/nacos-server/logs:/home/nacos/logs \
  -v /usr/local/docker/nacos-server/init.d/custom.properties:/home/nacos/init.d/custom.properties \
  -d nacos/nacos-server
  

  

• 异常查看

  // 如果出现异常,可以在/usr/local/docker/nacos-server/logs目录下查看
  tail -f /usr/local/docker/nacos-server/logs/nacos.log
  

测试

访问任意节点的8848端口; 如: 192.168.1.160:8848/nacos 默认用户名和密码为: nacos/nacos ;登录之后查看节点即可看到如下效果.

当停用任何一个节点,都不会影响正常的使用

Nginx代理Nacos集群

• 创建nacos.conf；添加以下配置

  upstream nacos_server {
     server 192.168.1.160:8848;
     server 192.168.1.161:8848;
     server 192.168.1.162:8848;
  }
  
  server {
      listen 80;
      listen 443 ssl;
      #填写绑定证书的域名
      server_name nacos.你的域名;
      #ssl on;
      ssl_certificate /你的证书路径.crt;
      ssl_certificate_key /你的密钥路径.key;
      ssl_session_timeout 5m;
      #按照这个协议配置
      ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
      #按照这个套件配置
      ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
      ssl_prefer_server_ciphers on;
  
      charset utf-8;
  
      resolver 223.5.5.5 223.6.6.6 1.2.4.8 114.114.114.114 valid=3600s;
  
      location / {
          proxy_read_timeout 90;
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection $http_connection;
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_cache_bypass $http_upgrade;
  
          proxy_pass http://nacos_server;
      }
  }
  

• 重启服务

  sbin/nginx -t
  sbin/nginx -s reload