The steps you mention seem fine to me Roberto, Detlev has detailed an alternative.

If you lose a client and need to rebuild (i.e. you didn't get chance to run the "--uninstall" option) then you can also just delete the host entry from IPA through the web gui or ipa command line before running the ipa-client-install (join) command.

When I have issues with clients (very infrequent and I have some 5000 clients) I find that running the "--uninstall" and then the install (steps 1 and 3) fix most issues without having to look into them (blind fix for the time wary!)

Regards
Angus

From: Detlev Habicht via FreeIPA-users <freeipa-users@lists.fedorahosted.org>
Sent: 04 December 2020 11:59
To: FreeIPA users list <freeipa-users@lists.fedorahosted.org>
Cc: Detlev Habicht <detlev.habicht@ims.uni-hannover.de>
Subject: [Freeipa-users] Re: Reinstalling client's OS
 
Hi,

you can reinstall a client with something like this:

/usr/sbin/ipa-client-install --force --unattended —domain=xxx —realm=xxx —server=xxx —server=yyy --force-ntpd —keytab=./krb5.keytab --ca-cert-file=./ca.crt

But you must save your keytab and ca file before.

For me it is working …

Detlev

--
  Detlev  | Institut fuer Mikroelektronische Systeme
  Habicht | D-30167 Hannover +49 511 76219662 habicht@ims.uni-hannover.de
  --------+-------- Handy    +49 172 5415752  ---------------------------



> Am 04.12.2020 um 11:46 schrieb Roberto Cornacchia via FreeIPA-users <freeipa-users@lists.fedorahosted.org>:
>
> Hello,
>
> Apologies if this is a trivial question, I could not find an obvious answer anywhere.
>
> If I want to reinstall from scratch the OS of an already enrolled client, is this the right procedure?
>
> 1. ipa-client-install --uninstall
> 2. <reinstall OS>
> 3. ipa-client-install
>
> Best regards,
> Roberto
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