Hi Grigory
if there is a problem with SELinux shouldn’t the issue be less sporadically. Sorry I know, I haven’t included much information about the scope of the installation. I have approximately 100 active computers configured this way and I have 6 reports about the issue from the last 2 month. Unfortunately, some users are working around the issue for multiple days before reporting. Just got a new report today but the problem started 7 days ago. Checked the log anyway but no messages regarding /etc/krb5.keytab.