1、First start an etcd server, I just start it on my local server and use the default port 2379 and 2380; 2、Then create roles、 name and password paris use etcdcli or other client; In this demo I creat a role admin and a user etcdAdmin which password is 123456, then grant the role admin to etcdAdmin; 3、Authorize roles with key prefix,in this demo , the role admin has both the read and write spring_etcd、etcd_demo;

1、Create a new spring cloud config server project,add jetcd dependency 2、Creat etcd config properties EtcdConfigProperties and create Client as a bean managed by spring context; 3、Creat an custom environment Component which implements EnvironmentRepository;

1、I create a new spring cloud config client project; you can link to the project here: spring-cloud-etcd-client ;In this project i just create a very simple project with mysql and jpa,and the configuration is incomplete in the properties you can there no username and password, these two configurations are stored in etcd；I also add a String field named configValue with @Value annotation in UserServiceImpl class,and you can get this value via a http request;