setroubleshootd: 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/setroubleshootd - from package: setroubleshoot-server

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

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