ipa-getkeytab: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/sbin/ipa-getkeytab - from package: ipa-client

You may install the required package with command yum install {package}
Error in other languages:
ipa-getkeytab: bevel nie gevind nie
ipa-getkeytab: comandă negăsită
ipa-getkeytab: comando não encontrado
ipa-getkeytab: commande introuvable
ipa-getkeytab: command not found
ipa-getkeytab: käsku ei ole
ipa-getkeytab: không tìm thấy lệnh
ipa-getkeytab: komanda nerasta
ipa-getkeytab: Kommando nicht gefunden.
ipa-getkeytab: kommandot finns inte
ipa-getkeytab: komut yok
ipa-getkeytab: nie znaleziono polecenia
ipa-getkeytab: níor aimsíodh an t-ordú
ipa-getkeytab: no se encontró la orden
ipa-getkeytab: no s'ha trobat l'ordre
ipa-getkeytab: opdracht niet gevonden
ipa-getkeytab: parancs nem található
ipa-getkeytab: perintah tidak ditemukan
ipa-getkeytab: príkaz nenájdený
ipa-getkeytab: příkaz nenalezen
ipa-getkeytab: команда не найдена
ipa-getkeytab: командата не е открита
ipa-getkeytab: 命令找不到
ipa-getkeytab: コマンドが見つかりません