Linux ドメイン ID、認証、およびポリシーガイド
https://access.redhat.com/documentation/ja-JP/Red_Hat_Enterprise_Linux/7/html/Linux_Domain_Identity_Authentication_and_Policy_Guide/index.html
PDFのがいいか。
https://access.redhat.com/documentation/ja-JP/Red_Hat_Enterprise_Linux/7/pdf/Linux_Domain_Identity_Authentication_and_Policy_Guide/Red_Hat_Enterprise_Linux-7-Linux_Domain_Identity_Authentication_and_Policy_Guide-ja-JP.pdf