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Upgraded idrac8 firmware from 2.70.70.70 to 2.83.83.83 and cant no longer use FQDN to access idrac
v2.83.83.83 was released in April 2022. We were tasked to upgrade to 2.83.83.83 to correct a vulnerability. Upgrade worked but can no longer use FQDN to access the idrac. Can only use the IP address. When trying to use FQDN we get a BAD REQUEST ACCESS ERROR 400...
I know from a previous thread this has happened with previous earlier versions of the firmware for idrac. Any possible fixes.? Really only tried to perform a idrac RESET which did nothing.
DELL-Shine K
4 Operator
4 Operator
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3K Posts
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May 14th, 2022 04:00
You are seeing this behavior due to host header check in iDRAC. You need to use FQDN mentioned in iDRAC to access iDRAC without this error. Else you need to disable host header check or ad FQDN you are using as an exception. Refer below link for details
https://www.dell.com/support/kbdoc/en-id/000189996/idrac8-https-fqdn-connection-failures-on-2-81-81-81
DELL-Shine K
4 Operator
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3K Posts
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May 16th, 2022 06:00
host name only support letter (a-z), digit (0-9) and hyphen (-). That is why you are getting the message. Can you set DNS name as "x03-xxxxxx-1" and domain name as "lom.xxx-xxxx.com" and check the behavior. If not you can try adding FQDN as an exception as mentioned in below link
https://www.dell.com/support/kbdoc/en-id/000189996/idrac8-https-fqdn-connection-failures-on-2-81-81-...
DELL-Young E
Moderator
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3.6K Posts
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May 15th, 2022 15:00
Hi, please follow what Shine's said and let us know. Wish you a good one.
bc1410
4 Posts
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May 16th, 2022 05:00
So after upgrading the iDRAC to 2.83.83.83 I did notice our
IDRAC Settings | Network | Common Settings | DNS iDRAC Name changed to this:
idrac-1234abc (123abc is our service tag)
So I tried to change it to our DNS entry which is named like this:
x03-xxxxxx-1.lom and then of course we have the "Static DNS Domain name" set to xxx-xxx.com
(used "x" to secure our names)
But when I click apply with the DNS iDRAC name = to x03-xxxxxx-1.lom
I get the following message
Im guessing it doesnt like the .lom in the naming convention
DELL-Shine K
4 Operator
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3K Posts
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May 16th, 2022 05:00
To update FQDN on iDRAC you need to update 2 attribute. Host name to be updates on "DNS iDRAC Name" attribute and domain name to be updated on "Static DNS Domain Name" attribute. So DNS iDRAC name should not have domain name.
bc1410
4 Posts
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May 16th, 2022 05:00
I get that.. Im guessing its our naming convention -
our naming convention is this -
x03-xxxxxx-1.lom.xxx-xxxx.com
It doesnt like the .lom part of the naming convention I guess..
bc1410
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May 16th, 2022 17:00
Thanks for your Great Help - I followed the link and that corrected the issue..
BC