cobblerd: command not found

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/cobblerd - from package: cobbler

You may install the required package with command yum install {package}

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