glfsheal: 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/sbin/glfsheal - from package: glusterfs-server

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

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