How do I know what Windows Domain Controller is RHEL7.4 is using?
We have a Windows integration for RHEL7.4 environment.
When Windows Administrator turns off the old domain controller, the Linux users cannot SSH to the RHEL7.4 Linux server which is using new domain controller.
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The /etc/krb5.conf file, "realm list" command is showing the new realm name .
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/etc/resolv.conf shows new domain controller's IP.
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I searched the old domain controller's name in /etc. I could only find the name in /etc/krb5.conf.1 (maybe a backup file someone created).
But Windows Admin thinks that something in the Linux server still making use of the old domain controller somehow. How do I prove the RHEL7.4 is making use of the new domain controller and not the old one?