<div dir="ltr"><div>I feel this is a User ssh file issue not a sssd when sshing. </div>the client is seeing its a different key exchange with the same IP it once knew about, the known_hosts file on the client machine (and user) in the .ssh folder need to be updated or wiped clean.<div><br></div><div>If you edit on the client machine /home/USER/.ssh/known_hosts delete the IP line.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jun 10, 2015 at 5:33 AM, Bob Hinton <span dir="ltr"><<a href="mailto:bob@jackland.demon.co.uk" target="_blank">bob@jackland.demon.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
If I uninstall the ipa client with "ipa-client-install --uninstall" then<br>
reinstall it to the same ipa master then most functions work fine.<br>
However, if I attempt to ssh from the client to the master then I get.<br>
<br>
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@<br>
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @<br>
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@<br>
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!<br>
Someone could be eavesdropping on you right now (man-in-the-middle attack)!<br>
It is also possible that the RSA host key has just been changed.<br>
The fingerprint for the RSA key sent by the remote host is<br>
86:c1:d7:96:8d:a3:b6:54:69:7c:cf:79:55:b3:14:c1.<br>
Please contact your system administrator.<br>
Add correct host key in /home/gbob/.ssh/known_hosts to get rid of this<br>
message.<br>
Offending key in /var/lib/sss/pubconf/known_hosts:1<br>
RSA host key for <a href="http://ipa004.jackland.co.uk" target="_blank">ipa004.jackland.co.uk</a> has changed and you have<br>
requested strict checking.<br>
Host key verification failed.<br>
<br>
I've tried stopping the sssd service on the client, removing<br>
/var/lib/sss/pubconf/known_hosts and /var/lib/sss/db/* then restarting<br>
sssd, but /var/lib/sss/pubconf just gets recreated with the old contents<br>
and I get the same error (it seems odd that it's reporting that the host<br>
key of the master has changed when it's the client that has been<br>
reinstalled). How do I clear-out the client's knowledge of the old host<br>
keys?<br>
<br>
In this case I'm using ipa-client v3.0.0 on RHEL6.6<br>
<br>
Thanks<br>
<span class="HOEnZb"><font color="#888888"><br>
Bob<br>
<br>
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</font></span></blockquote></div><br></div>