OS: CentoOS 7.1
IPA: 4.1.0-18
SSSD: 1.12.2-58
With IPA any clients running CentOS7.1 authentication
for ssh and sudo takes more than 5 seconds _after_
putting in password. If ssh to the IPA server itself,
it authenticates instantly.
Google did not provide much relevant information. Note
that this is not a slow ssh session to get to
authentication prompt, it always gets to the prompt
without delay.
Also it is not related to NFS performance, it is equally
slow if I login to a NFS server (IPA client) locally or
login to a server (also a IPA client) that has autofs
home.
IPA server is a fresh installation with just a couple
of users. I had an installation previously that has more
than a thousand user accounts on CentOS 6. Users did not
have the slowness problem as with this new installation.
Hope this list can provide some pointers.