Wrong trust and certificate after hostname change

Question

Hi all I do have issues with certificates and trust like I mentioned in another thread but here is a different one. I did need to change hostname of two systems because the customer deliver wrong information at the beginning. I did that by GUI within Hardware-Ethernet...... old name = EMCDD01.CUSTOMER.LOCAL new name = DD040B01.CUSTOMER.LOKAL After changing the hostnames and a reboot it tells me in the CLI the following root@DD040B01# hostname The Hostname is: DD040B01.CUSTOMER.LOKAL root@DD040B01# adminaccess trust show Subject Type         Valid From Valid Until Fingerprint ------------------ ----------   ------------------------ ------------------------ ------------------------------------------------------------ EMCDD01.CUSTOMER.LOCAL trusted-ca Sun Mar  1 15:34:41 2015   Wed Feb 21 15:34:41 2046 E2:2F:B0:CB:62:68:4B:51:9D:DE:94:6D:71:C9:30:64:AC:28:2D:41 ------------------ ----------   ------------------------ ------------------------ ------------------------------------------------------------ root@DD040B01# adminaccess certificate show Subject Type   Application   Valid From Valid Until Fingerprint ------------------- ----   -----------   ------------------------ ------------------------   ------------------------------------------------------------ DD040B01.CUSTOMER.LOKAL host https         Wed Mar  4 11:26:38 2015   Sun Feb 25 10:26:38 2046 96:CC:E4:F1:A3:31:08:BA:2D:D3:C5:00:DD:70:F5:4D:BE:4E:12:BB EMCDD01.CUSTOMER.LOCAL ca trusted-ca    Sun Mar  1 15:34:41 2015   Wed Feb 21 15:34:41 2046 E2:2F:B0:CB:62:68:4B:51:9D:DE:94:6D:71:C9:30:64:AC:28:2D:41 ------------------- ----   -----------   ------------------------ ------------------------ ------------------------------------------------------------ the same for the other system. What is the supported way to change hostname? I am pretty much sure that this will lead to certificate issues anyway even more then I have. I have to be honest I am a little bit stressed about all this atm.

DukeR1337 · Answer

I found that thread within the ECN, does anyone know how to do this? https://community.emc.com/thread/191646?start=0&tstart=0

DukeR1337 · Answer

Is there ana kind of functional issues when i leave it like this but the actual hostname is diffrent now? Thanks!

DukeR1337 · Answer

Replication works fine so far

Dani_ · Answer

Yes I don't think you can setup replication now. Are the 2 system under support? Regards, Daniel

Dani_ · Answer

Hi Duker,

The problem lies in the way DD generates the certificate. The actual hostname is in the initial certificate. Because you cannot remove this certificate from the DD GUI you have to do this from the Linux kernel.

Please op een SR and support will help you with this task.

Regards,

Daniel

Data Domain

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