oslo-rootwrap: 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/bin/oslo-rootwrap - from package: python-oslo-rootwrap

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