Technical Tip: Reboot loop after upgrade to FortiProxy firmware version 7.0.x

1. Connect a Laptop to the FortiProxy with the serial console, and the serial console output shows the FortiProxy repeatedly rebooting by itself after the upgrade.

The sample log is shown below:

BIOS Version: GS-6LPCE2-R03
BIOS Build Date: 07/27/2015
Processor Type: Intel(R) Core(TM) i7-4790S CPU @ 3.20GHz
Processor Speed: 3200 Mhz
Total Memory: 8192MB (DDR3 1600)

USB Devices total: 0 KBDs, 0 MICE, 1 MASS, 2 HUBs
USB MASS #0:ADATA USB DOM 1100

Detected ATA/ATAPI Devices...
SATA PORT0: TOSHIBA MG04ACA200N, S.M.A.R.T Supported
SATA PORT1: TOSHIBA MG04ACA200N, S.M.A.R.T Supported
Version 2.17.1246. Copyright (C) 2015 American Megatrends, Inc.
Press <F2> to enter setup. Press <F10> to Boot setup

FortiBootLoader
FortiProxy-400E (11:39-10.16.2017)
Ver:00020010
Serial number:FPX4HETA20000077
Total RAM: 8192MB
Boot up, boot device capacity: 1920MB.
Press any key to display configuration menu...
..................

Reading boot image 6511687 bytes.
Initializing FortiProxy...
System is starting...
we have 4 interface
The config file may contain errors,
Please see details by the command 'diagnose debug config-error-log read'

Please stand by while rebooting the system. <----- Reboot.
[ 79.624450] reboot: Restarting system
▒
Initializing Intel(R) Boot Agent GE v1.4.10
PXE 2.1 Build 092 (WfM 2.0)
Press Ctrl+S to enter the Setup Menu.

BIOS Version: GS-6LPCE2-R03
BIOS Build Date: 07/27/2015
Processor Type: Intel(R) Core(TM) i7-4790S CPU @ 3.20GHz
Processor Speed: 3200 Mhz
Total Memory: 8192MB (DDR3 1600)

USB Devices total: 0 KBDs, 0 MICE, 1 MASS, 2 HUBs
USB MASS #0:ADATA USB DOM 1100

Detected ATA/ATAPI Devices...
SATA PORT0: TOSHIBA MG04ACA200N, S.M.A.R.T Supported
SATA PORT1: TOSHIBA MG04ACA200N, S.M.A.R.T Supported
Version 2.17.1246. Copyright (C) 2015 American Megatrends, Inc.
Press <F2> to enter setup. Press <F10> to Boot setup

ortiBootLoader
FortiProxy-400E (11:39-10.16.2017)
Ver:00020010
Serial number:FPX4HETA20000077
Total RAM: 8192MB
Boot up, boot device capacity: 1920MB.
Press any key to display configuration menu...
..................

Reading boot image 6511687 bytes.
Initializing FortiProxy...
System is starting...
we have 4 interface
The config file may contain errors,
Please see details by the command 'diagnose debug config-error-log read'

PROXY_01 login:

The system
Please stand by while rebooting the system.
[ 67.604277] reboot: Restarting system <----- Reboot.

2. The cause is related to the config system auto-script. Remove the below sample system auto-script from the config file before proceeding with the upgrade. Do not repeat the configuration or configure the same auto script after the upgrade is successful. 

config system auto-script
    edit "execute reboot"
        set interval 604800
        set repeat 0
        set start auto
        set script "execute reboot"
    next
        edit "Confirm reboot"
            set interval 604800
            set repeat 0
            set start auto
            set script "y"
        next
     end

The above auto script is not designed to perform an auto-reboot of the device. Use the following KB article to set up FortiProxy to reboot daily or specific time if needed:Technical Tip: Configure FortiGate to restart (reboot) daily

Related articles:
Technical Tip: How to perform initial troubleshooting for hardware related issues on FortiProxy hardware
Technical Tip: FortiProxy interface is not responding to an ICMP request