1、使用命令检查重新启动的原因

#show switchinfo
Hostname is arubalab-MD
System Time:Wed May  6 17:41:25 EDT 2020
No crash information available.     ------> 检查是否有任何崩溃信息                                     
No kernel crash information available.
Reboot Cause: User reboot (Intent:cause:register 78:86:50:60)

show syslocation 

Location not configured

show version 

Aruba Operating System Software.
ArubaOS (MODEL: Aruba7010-US), Version 8.5.0.6
Website: http://www.arubanetworks.com
(c) Copyright 2020 Hewlett Packard Enterprise Development LP.
Compiled on 2020-01-24 at 06:35:12 UTC (build 74058) by p4build

ROM: System Bootstrap, Version CPBoot 1.0.7.0 (build 65676)
Built: 2018-07-06 04:23:32
Built by: p4build@re_client_65676

Switch uptime is 2 days 21 hours 24 minutes 22 seconds
Reboot Cause: User reboot (Intent:cause:register 78:86:50:60) ----> 查看原因                   
Supervisor Card
Processor (XLP208 Rev B1 (Secure Boot) , 800 MHz) with 3797M bytes of memory.
32K bytes of non-volatile configuration memory.
1936M bytes of Supervisor Card system flash.

2、如果有崩溃信息，提取崩溃信息

#tar crash
#copy flash: crash.tar tftp: <ip address of tftp server> crash.tar

3、检查控制器是否有进程卡住

#show process monitor statistics 

4、检查CPU内存

#show cpuload
#show memory

5、收集log日志

#tar logs tech-support
#copy flash: logs.tar tftp: <ip address of tftp server> logs.tar

6、Call TAC进一步分析

附：日志压缩方式改变

从8.3.0.13、8.5.0.7、8.6.0.3 版本以后，tech-support 文件后缀已经改为.7z，之前版本控制器的log/tech-support都是通过’gzip’进行压缩。现在通过7za工具可以提高压缩效率，体积也更小。

(Aruba-VPNC) [MDC] #tar logs tech-support
This operation may take a while, Please do not power cycle the box
(AAruba-VPNC) [MDC] #dir
-rw-r--r--    1 root     root         4241 Apr 11 00:27 AUDITTRAIL-HISTORY.log
-rw-r--r--    1 root     root        42076 Apr 11 00:27 AUDITTRAIL-LOGIN_OUT-HISTORY.log
-rw-r--r--    1 root     root          152 May 12 01:27 blimits
-rw-r--r--    1 root     root           40 Apr 10 07:20 bmap
-rw-r--r--    1 root     root        11935 Apr 10 07:15 default.cfg
-rw-r--r--    1 root     root        73024 Mar 12 12:11 default.cfg_writemem_2020-03-12_19-11-10
drwxr-xr-x    5 root     root         4096 Apr 10 07:20 fieldCerts
-rw-r--r--    1 root     root        60273 May  8 02:34 flashbackup.tar.gz
-rw-r--r--    1 root     root         1687 Mar  5 10:29 licensedb
-rw-------    1 root     root      4182751 May 12 07:03 logs.tar.7z
-rw-r--r--    2 root     root        13021 Oct 25  2019 original.cfg
drwxr-xr-x    2 root     root         4096 Apr 11 00:31 upgrade-2020-04-11_00-31-27
-rw-r--r--    1 root     root        37454 Oct 29  2019 upgrade_config_backup_8.5.0.0_to_8.4.0.0_2019-10-29-02_36_59.tar.gz