一、 总体检查版本分布...........................................................................................................5 二、 磁盘空间使用率高...........................................................................................................5 三、 系统资源消耗对比...........................................................................................................6 四、 系统内存不足...................................................................................................................6 五、 Swap 分区..........................................................................................................................7 六、 系统日志...........................................................................................................................7
............................................................................................................................................. 7 ............................................................................................................................................. 7 ............................................................................................................................................. 7 ............................................................................................................................................. 7 ............................................................................................................................................. 7 ............................................................................................................................................. 7 ............................................................................................................................................. 7 6.1 硬件故障......................................................................................................................7 6.2 页面分配失败..............................................................................................................7 6.3 IPv6 相关导致故障..................................................................................................... 8 6.4 日志分析......................................................................................................................8 优化建议............................................................................................................................................. 9 1. 目录空间清理........................................................................................................................9 2. home 目录权限设定..............................................................................................................9 3. sar 配置.................................................................................................................................. 9 4. 升级系统 bug.........................................................................................................................9 5. 关闭无用服务........................................................................................................................9 6. 清理僵尸进程......................................................................................................................10 7. 清空内存中的缓存数据......................................................................................................10 8. 禁用非常用用户帐号或删除..............................................................................................10 9. 调整服务器默认运行级别..................................................................................................11 10. 禁用 root 账号远程登录................................................................................................... 11 11. 整理账号密码强度设置.................................................................................................... 11 12. 口令生存期安全设置........................................................................................................12 13. 用户权限指派....................................................................................................................12 14. 禁用 libvirtd 服务.............................................................................................................. 12 系统报错分析及解决方案建议.......................................................................................................13 1. 关闭 selinux......................................................................................................................... 13 2. 关闭 IPV6............................................................................................................................ 13 3. 内核升级.............................................................................................................................. 13 4. syn cookie 功能................................................................................................................13 5. 链接跟踪表.........................................................................................................................14 6. printk 打印输出................................................................................................................14