puppetrun: 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/puppetrun - from package: puppet-server

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

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