How does the ETCD elector land with the combination?

Hello, everyone. Let me ask you a question

.

there is a Java service that starts 5 nodes to be highly available
requirement: only one service can be valid at a time
solution:
1 deploy ETCD campaign leader on each Java node
2 when all five nodes receive tasks at the same time, check whether the ETCD of their own nodes is leader, or return, otherwise reject
question:
is the above solution reasonable? If reasonable, how does the client know who the current leader is? If it is not reasonable, then how should it be better?

Etcd
Feb.24,2022

Previous: When Sogou clicks the management link and then clicks the column in the left menu bar, he often jumps to display the name of the management project that he clicked last time.

Next: How to identify whether it is a QR code when WeChat Mini Programs uploads a picture?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3c6b3-2c32b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3c6b3-2c32b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?