初始化系统环境,修改内核参数 失败

用ansible的方式安装集群,初始化系统环境,修改内核参数ansible-playbook bootstrap.yml

Ansible FAILED! => playbook: bootstrap.yml; TASK: check_system_static : Preflight check - Check if the operating system supports EPOLLEXCLUSIVE; message: {“changed”: true, “cmd”: “/home/tidb/deploy/epollexclusive”, “delta”: “0:00:00.007020”, “end”: “2019-10-16 10:29:15.858494”, “msg”: “non-zero return code”, “rc”: 1, “start”: “2019-10-16 10:29:15.851474”, “stderr”: “”, “stderr_lines”: [], “stdout”: “epoll_ctl with EPOLLEXCLUSIVE | EPOLLONESHOT succeeded. This is evidence of no EPOLLEXCLUSIVE support. Not using epollex polling engine.False: epollexclusive is not available”, “stdout_lines”: [“epoll_ctl with EPOLLEXCLUSIVE | EPOLLONESHOT succeeded. This is evidence of no EPOLLEXCLUSIVE support. Not using epollex polling engine.False: epollexclusive is not available”]}

麻烦提供一下操作系统版本

报错的服务器操作系统版本:CentOS Linux release 7.7.1908 (Core)

一共四台服务器: 有三台操作系统:CentOS Linux release 7.4.1708 (Core) 有一台操作系统:CentOS Linux release 7.7.1908 (Core)

uname -a 检查一下操作系统内核版本,正常需要4.5以上版本才支持EPOLLEXCLUSIVE

好的,谢谢