ceilometer-alarm-evaluator: 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 Debian possible default full paths are:

/usr/bin/ceilometer-alarm-evaluator - from package: ceilometer-alarm-evaluator

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

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