Unknown parameter encountered by samba-winbind when joining RHEL system to Active Directory.

Issue

• Attempting to join a Red Hat Enterprise Linux 7.x system to an Active Directory domain using net ads join results in one or more unknown parameters getting reported by winbind.
• This occurs when samba configuration in an older version is migrated to a newer version with updated attributes.
• However, the domain join operation may still complete successfully.

When using samba/winbind to join a Red Hat Enterprise Linux 7.x system to an AD domain, net ads join may log warning messages as shown below:

# net ads join -U testuser@testdomain.example.com
Unknown parameter encountered: "currentTimestamp"
Ignoring unknown parameter "currentTimestamp"
Unknown parameter encountered: "prefix"
Ignoring unknown parameter "prefix"
Unknown parameter encountered: "smbConfFile"
Ignoring unknown parameter "smbConfFile"
Unknown parameter encountered: "smbConfFileBackup"
Ignoring unknown parameter "smbConfFileBackup"
Unknown parameter encountered: "nsswitchConfFile"
Ignoring unknown parameter "nsswitchConfFile"
Unknown parameter encountered: "nsswitchConfFileBackup"
Ignoring unknown parameter "nsswitchConfFileBackup"
Unknown parameter encountered: "pamConfFile"
Ignoring unknown parameter "pamConfFile"
Unknown parameter encountered: "pamConfFileBackup"
Ignoring unknown parameter "pamConfFileBackup"
Unknown parameter encountered: "authConfFile"
Ignoring unknown parameter "authConfFile"
Unknown parameter encountered: "authConfFileBackup"
Ignoring unknown parameter "authConfFileBackup"
Unknown parameter encountered: "sed -i 's/FORCELEGACY"
Ignoring unknown parameter "sed -i 's/FORCELEGACY"
Enter testuser@testdomain.example.com's password:
Using short domain name -- TESTDOMAIN
Joined 'VM39-188' to dns domain 'TESTDOMAIN.EXAMPLE.COM'