es启动默认不能使用root用户,所以需要新创建一个用户来启动. 启动时可能出现的问题: [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536] [2]: max number of threads [1024] for user [esuser1] is too low, increase to at least [4096] [3]: max vir…