What SSSD does is allow a local service to check with a local cache in SSSD, but that cache may be taken from any variety of remote identity providers — an LDAP directory, an Identity Management domain, even a Kerberos realm. Je précise que les flux sont bien ouvertes entre le client et serveur, le firewall du serveur a été désactivé pour effectuer des tests d'authentification. dns_lookup_kdc. No translations currently exist. # yum install realmd oddjob oddjob-mkhomedir sssd adcli samba-common-tools. How reproducible: Almost every time, predictable. Issue . It is a simple omission of a single line in the /etc/sssd/sssd.conf file and is expected to be corrected in the V6.4 Red Hat release. Setting up SSH to use Kerberos Authentication. But i guess regenerating keytabs should be ok. Add Linux to Windows Domain using realm (CentOS/RHEL 7/8) Creating the /etc/krb5.keytab host keytab file. SSSD: Cannot find KDC for requested realm - Red Hat Here is an excerpt from the MIT docs: Realm name¶ Although your Kerberos realm can be any ASCII string, convention is to make it the same as your domain name, in upper-case letters. I have several hundred machines I'll need to deploy to. krb5.conf and sssd.conf have the proper enteries and were set up by the client install. tech is a bind user which have required privileges on AD or we can also administrator user of AD . The realm should always be in upper case. Active Directory Authentication - Oracle Joining AD with realm join fails - CentOS kinit: Cannot contact any KDC for realm 'EXAMPLE.COM' while getting initial credentials. KerberosAuthentication yes GSSAPIAuthentication yes GSSAPICleanupCredentials yes UsePAM no Step:2 Now Join Windows Domain or Integrate with AD using realm command. Problem is that you need dns_lookup_kdc = true in your /etc/krb5.conf under the [libdefaults] section file: [root@mysql01 ~]# kinit tom@mds.xyz kinit: Cannot find KDC for realm "mds.xyz" while getting initial credentials [root@mysql01 ~]# [root@mysql01 ~]# vi /etc/krb5.conf [root@mysql01 ~]# systemctl restart sssd [root@mysql01 ~]# kinit tom@mds.xyz Password for tom@mds.xyz: [root@mysql01 .

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