puppetd: 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/sbin/puppetd - from package: puppet

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

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