ganglia-config: 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/bin/ganglia-config - from package: ganglia-devel

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