Dell iDRAC Web GUI Error – ERR_SSL_SERVER_CERT_BAD_FORMAT

Issue :- 

iDRAC web GUI console unable to launch due to the SSL Certificate issue.

Error: -

doesn’t adhere to security standards.
ERR_SSL_SERVER_CERT_BAD_FORMAT

Reconfigure Self Signed Cert :–

1 )  ssh to iDRAC ip  and supply iDRAC user and password ( default is user:root , pass : calvin ).

       ssh -o "IdentitiesOnly yes "  root@<drac ip>

Ex :-

   [somasekhar.a@test ~]$ ssh -o "IdentitiesOnly yes"  root@192.168.0.122

2) Run the below command.

    /admin1-> racadm sslresetcfg
    Certificate regenerated successfully and webserver restarted

  Now try to relaunch iDRAC web GUI console. Still if its not working then have to soft reset iDRAC system. Run the below command

  racadm racreset soft

Ex:-

/admin1-> racadm racreset soft
RAC reset operation initiated successfully. It may take up to a minute 
for the RAC to come back online again.

Wait for 2/3 minutes then try to relaunch iDRAC web GUI console.

Upgrading DELL firmware

          One of the few maintenance tasks often neglected by system administrators, is that of upgrading server firmware. Whether that be BIOS, Network cards, RAID or any other firmware, these subsystems might never see an update during the life time of a server.

Luckily, Dell makes this very easy under Red Hat / Centos. Here are the steps:

# wget -q -O – http://linux.dell.com/repo/hardware/latest/bootstrap.cgi | bash
# yum -y install firmware-tools.noarch
# yum -y install $(bootstrap_firmware)
# update_firmware --yes
# reboot

You might need to apply the last three steps a few times between reboots, as not all firmware is applied in the same go.

Also, you need to reboot your machine. No cold boot, shutdown, power off etc, just a nice warm reboot. :)