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RHEL with AD using SSSD. My previous post assumed many setup constraints which might not be true. Here are some simple steps to start off with SSSD configuration. Preparation for SSSD. Prerequisite installations. yum install sssd sssd-client krb5-workstation samba openldap-clients open-ssl authconfig Update /etc/resolve.conf on slave nodes. And then we update the /etc/resolve.conf file with the direct IP of External Server 172.14.14.174 , as slave node now should be able to communicate to the External Server. ; generated by /sbin/dhclient-script nameserver 172.14.14.174 ; IP for the DNS server, this happens to be the xyzserver. nameserver 172.14.14.141 ; IP for the DNS server, this happens to be the abcserver. Testing if ping works. [root@slave-server ~]# ping xyzserver.xyzdomain.com PING xyzserver.xyzdomain.com (172.14.14.174) 56(84) bytes of data. 64 bytes from 172.14.14.174: icmp_seq=1 ttl=127 time=0.866 ms 64 bytes from 172.14.14.174: icmp_seq=2 ttl=127 t...

Redhat Intergration with Active Directory using SSSD. Introduction Intro from https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Windows_Integration_Guide/sssd-ad-integration.html There are inherent structural differences between how Windows and Linux handle system users. The user schemas used in Active Directory and standard LDAPv3 directory services also differ significantly. When using an Active Directory identity provider with SSSD to manage system users, it is necessary to reconcile Active Directory-style users to the new SSSD users. There are two ways to achieve it: ID mapping in SSSD can create a map between Active Directory security IDs (SIDs) and the generated UIDs on Linux. ID mapping is the simplest option for most environments because it requires no additional packages or configuration on Active Directory. Unix services can manage POSIX attributes on Windows user and group entries. This requires more configuration and information with...