Change default login shell


I am trying to change my default login shell on yggdrasil to zsh. I checked on the hpc wiki and on this forum but could not find any info.

I am trying to do

chsh -s /bin/zsh legranlo 

but I get the following error message:

chsh: Échec d'authentification
chsh: échec de modification de l'attribut d'utilisateur: Permission non accordée

I triple checked that I didn’t do a mistake in my user name and password.
So maybe we do not have the rights to change our login shell ?

Reviving this because I’m also interested in changing to zsh for various reasons


Only admins are able to change shell because it needs to be deployed on all server in the cluster. Give me your prerequisite and I will change it for you.

Best regards,