基于Docker搭建Nacos集群

客官°小女子只卖身不卖艺 2023-02-27 12:27 26阅读 0赞

![file][]

#### 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][CentOS 7_Docker]

#### 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:][sql] 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
    
    ![file][file 1]
 *  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.  
![file][file 2]

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
    
    ![file][file 3]  
    ![在这里插入图片描述][format_png]

[file]: /images/20230209/42189b51f20c4845a681ad5dfb86e32e.png
[CentOS 7_Docker]: https://lupf.cn/articles/2019/11/23/1574503815568.html
[sql]: https://github.com/alibaba/nacos/blob/master/distribution/conf/nacos-mysql.sql
[file 1]: /images/20230209/2867191b849349f687a03a00aa3eed3d.png
[file 2]: /images/20230209/de7a3645d1c94957a1560eeed65cf14e.png
[file 3]: /images/20230209/6bd368b104a540d09e8f60039930a863.png
[format_png]: /images/20230209/5c9ad97ecf704d36b20b610432a42809.png