cf-execd: 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/cf-execd - from package: cfengine

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

On Debian possible default full paths are:

/usr/sbin/cf-execd - from package: cfengine3
/usr/lib/debug/usr/sbin/cf-execd - from package: cfengine3-dbg

You may install the required package with command apt-get install {package}

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