glusterfsd: command not found

Have You tried accessing the binary with the full path?

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/glusterfsd - from package: glusterfs-fuse

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

On Debian possible default full paths are:

/usr/sbin/glusterfsd - from package: glusterfs-common

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