java - centos启动rocketmq时找不到或无法加载主类NamesrvStartup

Question

启动rocketmq的namesrv时报错，如图

Answer 1

I have never used rocketmq, but I can give you an idea to find the problem.
The class execution cannot be found. It is probably a problem with environment variables. Generally, part of the script in the startup script is used to set environment variables. In "some cases", the script may fail to set environment variables. And this "certain circumstances" is the answer to this question.