neutron-ns-metadata-proxy: 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/neutron-ns-metadata-proxy - from package: neutron-common

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

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