Nacos2.3.2开启服务端用户认证的坑

最近升级Nacos服务端到版本2.3.2。但是在开启服务端用户认证的时候出现了问题。

下载地址：Nacos Server

首先修改配置文件application.properties 开启认证：

nacos.core.auth.system.type=nacos
nacos.core.auth.enabled=true
nacos.core.auth.server.identity.key=nacos
nacos.core.auth.server.identity.value=123456

报错：Unable to start embedded Tomcat

重启迎来第一个报错：

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
...
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'basicAuthenticationFilter' defined in class path resource [com/alibaba/nacos/prometheus/filter/PrometheusAuthFilter.class]: Unsatisfied dependency expressed through method 'basicAuthenticationFilter' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'nacosAuthConfig' defined in URL [jar:file:/Users/lichenghao/my/tool/nacos-server-2.3.2/target/nacos-server.jar!/BOOT-INF/lib/default-auth-plugin-2.3.2.jar!/com/alibaba/nacos/plugin/auth/impl/NacosAuthConfig.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'tokenManagerDelegate': Unsatisfied dependency expressed through field 'jwtTokenManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtTokenManager' defined in URL [jar:file:/Users/lichenghao/my/tool/nacos-server-2.3.2/target/nacos-server.jar!/BOOT-INF/lib/default-auth-plugin-2.3.2.jar!/com/alibaba/nacos/plugin/auth/impl/token/impl/JwtTokenManager.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.plugin.auth.impl.token.impl.JwtTokenManager]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: the length of secret key must great than or equal 32 bytes; And the secret key  must be encoded by base64.Please see https://nacos.io/zh-cn/docs/v2/guide/user/auth.html

看着报错好像缺少了一个参数关于token的，查看文档：自定义密钥

修改配置：

随意搜索一个工具生成一个base64编码的字符串,Base64 在线编码解码

nacos.core.auth.system.type=nacos
nacos.core.auth.enabled=true
nacos.core.auth.server.identity.key=nacos
nacos.core.auth.server.identity.value=123456
nacos.core.auth.plugin.nacos.token.secret.key=NjExYmJhY2NjMDU1NGFmNDgxMDgyODZlZTU5MjI2OWM=

报错：用户名或密码错误

再次启动，使用用户名nacos和密码123456登录，迎来第二个错误：用户名或密码错误

看文档提示：

server.identity

集群均需要配置相同的server.identity信息，否则可能导致服务端之间数据不一致或无法删除实例等问题。

也就是说上面配置的server.identity.key和value并不是用来认证用户的。

系统默认的用户名为nacos 密码也是nacos，需要使用该默认的账号登录后，手动修改密码才可以。

修改为自定义密码后，即可在项目中配置使用：

spring:
    cloud:
        nacos:
            server-addr: localhost:8848
            username: nacos
            password: 123456
            config:
                file-extension: yaml
                namespace: IMP
                group: DEV
            discovery:
                namespace: IMP
                group: DEV
        sentinel:
            transport:
                dashboard: 192.168.1.187:8858
            eager: true