（文章不定期更新）
服务器：LENOVO ThinkServer RD540
虚拟化环境：Esxi5.5
虚拟机系统：Ubuntu 16.04LTS
虚拟机配置：
| 节点 | 处理器 | 内存 | 硬盘 |
|---|---|---|---|
| master | 全部 | 8G | 200G |
| slave10 | 全部 | 8G | 200G |
| slave20 | 全部 | 4G | 130G |
| slave30 | 全部 | 4G | 130G |
| slave40 | 全部 | 4G | 130G |
以上由于slave1-4的名称在局域网中已经被占用，则名后加0
装好Esxi后，在vSphere界面初步安装环境，却发现时断时连。如下图：
在连接过程中时不时会抛出异常。
而且在传输大文件必定无法成功:
查看Esxi的hostd日志，有：
2018-05-11T02:30:00.023Z [FFE215B0 verbose ‘Statssvc.vim.PerformanceManager’] HostCtl Exception in stats collection. Turn on ‘trivia’ log for details
2018-05-11T02:30:02.219Z [FFE84B70 verbose ‘SoapAdapter’] Responded to service state request
2018-05-11T02:30:20.023Z [FFE215B0 verbose ‘Statssvc.vim.PerformanceManager’] HostCtl Exception in stats collection: Sysinfo error on operation returned status : Not initialized. Please see the VMkernel log for detailed error information
这个Exception指示去Kernel日志中获取详细信息。再查看Esxi的kernel日志：
/var/log # cat vmkernel.log | grep fail
2018-05-10T12:14:09.089Z cpu4:33645)ScsiDeviceIO: 2337: Cmd(0x412e803d1ac0) 0x85, CmdSN 0xa from world 34572 to dev “naa.600605b007e0a4201dfcf3440b1aeec1” failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x20 0x0.
2018-05-10T12:14:09.089Z cpu4:33645)ScsiDeviceIO: 2337: Cmd(0x412e803d1ac0) 0x4d, CmdSN 0xb from world 34572 to dev “naa.600605b007e0a4201dfcf3440b1aeec1” failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x20 0x0.
2018-05-10T12:14:09.089Z cpu4:33645)ScsiDeviceIO: 2337: Cmd(0x412e803d1ac0) 0x1a, CmdSN 0xc from world 34572 to dev “naa.600605b007e0a4201dfcf3440b1aeec1” failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x24 0x0.
2018-05-10T12:14:09.099Z cpu4:33645)ScsiDeviceIO: 2337: Cmd(0x412e803d1ac0) 0x85, CmdSN 0xd from world 34572 to dev “naa.50000395a802efd4” failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x20 0x0.
2018-05-10T12:44:09.180Z cpu2:32848)ScsiDeviceIO: 2337: Cmd(0x412e82722980) 0x85, CmdSN 0x14 from world 34572 to dev “naa.600605b007e0a4201dfcf3440b1aeec1” failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x20 0x0.
其中的数字是SCSI感知代码：
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.troubleshooting.doc_50%2FGUID-E8304C8B-E2EA-459E-A545-8531C1BF12B0.html
看样子好像是硬盘的问题。
官方也给出了详细的排查方案【ESX/ESXi 主机出现间歇性网络连接或无网络连接 (2077745)】