Alibaba Nacos配置中心初体验

拼搏现实的明天。 2022-12-16 13:05 164阅读 0赞

> 官方文档：[https://nacos.io/en-us/docs/use-nacos-with-kubernetes.html][https_nacos.io_en-us_docs_use-nacos-with-kubernetes.html]

# 安装部署 #

### **依赖** ###

1.  64bit OS: Linux/Unix/Mac/Windows supported, Linux/Unix/Mac recommended.
2.  64bit JDK 1.8+: [downloads][], [JAVA\_HOME settings][JAVA_HOME settings].
3.  Maven 3.2.x+: [downloads][downloads 1], [settings][].

### 下载软件包 ###

下载地址 [https://github.com/alibaba/nacos/releases][https_github.com_alibaba_nacos_releases]

tar -xvf nacos-server-$version.tar.gz
    cd nacos/bin
    # 启动服务
    sh startup.sh -m standalone
    # 关闭服务
    sh shutdown.sh

默认启动8848端口，访问 [http://localhost:8848/nacos/index.html][http_localhost_8848_nacos_index.html]

初始用户名密码均为 nacos

# **Nacos初体验** #

### 新建命名空间 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NxbDI1MjI4MzEyNg_size_16_color_FFFFFF_t_70][]

### 新建配置 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NxbDI1MjI4MzEyNg_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NxbDI1MjI4MzEyNg_size_16_color_FFFFFF_t_70 2][]

### python代码示例 ###

#!/usr/bin/env python3
    # -*- coding: utf-8 -*-
    
    import nacos
    
    SERVER_ADDRESSES = "localhost"
    # 这里是命名空间的ID，不是命名空间名称
    NAMESPACE = "001"
    
    client = nacos.NacosClient(SERVER_ADDRESSES, namespace=NAMESPACE)
    
    # get config
    data_id = "aa"
    group = "bb"
    print(client.get_config(data_id=data_id, group=group))

### Java代码示例 ###

import java.util.Properties;
    import java.util.concurrent.Executor;
    import com.alibaba.nacos.api.NacosFactory;
    import com.alibaba.nacos.api.PropertyKeyConst;
    import com.alibaba.nacos.api.config.ConfigService;
    import com.alibaba.nacos.api.config.listener.Listener;
    import com.alibaba.nacos.api.exception.NacosException;
    
    /**
     * Config service example
     *
     * @author Nacos
     *
     */
    public class GetNacos {
    
        public static void main(String[] args) throws NacosException, InterruptedException {
            String serverAddr = "10.210.100.144";
            String dataId = "aa";
            String group = "bb";
            Properties properties = new Properties();
            properties.put(PropertyKeyConst.NAMESPACE, "001");
            properties.put(PropertyKeyConst.SERVER_ADDR, serverAddr);
            ConfigService configService = NacosFactory.createConfigService(properties);
            String content = configService.getConfig(dataId, group, 5000);
            System.out.println(content);
            configService.addListener(dataId, group, new Listener() {
                @Override
                public void receiveConfigInfo(String configInfo) {
                    System.out.println("recieve:" + configInfo);
                }
    
                @Override
                public Executor getExecutor() {
                    return null;
                }
            });
    
            //将配置内容修改为content
            boolean isPublishOk = configService.publishConfig(dataId, group, "content");
            System.out.println(isPublishOk);
    
            Thread.sleep(3000);
            content = configService.getConfig(dataId, group, 5000);
            System.out.println(content);
    
    
            boolean isRemoveOk = configService.removeConfig(dataId, group);
            System.out.println(isRemoveOk);
            Thread.sleep(3000);
    
            content = configService.getConfig(dataId, group, 5000);
            System.out.println(content);
            Thread.sleep(300000);
    
        }
    }

[https_nacos.io_en-us_docs_use-nacos-with-kubernetes.html]: https://nacos.io/en-us/docs/use-nacos-with-kubernetes.html
[downloads]: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
[JAVA_HOME settings]: https://docs.oracle.com/cd/E19182-01/820-7851/inst_cli_jdk_javahome_t/
[downloads 1]: https://maven.apache.org/download.cgi
[settings]: https://maven.apache.org/settings.html
[https_github.com_alibaba_nacos_releases]: https://github.com/alibaba/nacos/releases
[http_localhost_8848_nacos_index.html]: http://localhost:8848/nacos/index.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NxbDI1MjI4MzEyNg_size_16_color_FFFFFF_t_70]: /images/20221123/0a023787ba0644f0ba6f7d0123dcb9e3.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NxbDI1MjI4MzEyNg_size_16_color_FFFFFF_t_70 1]: /images/20221123/8734667a59de4582ba72ca526cabc560.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NxbDI1MjI4MzEyNg_size_16_color_FFFFFF_t_70 2]: /images/20221123/1f0efe461f23411992052c16c08182bb.png