cpglockdump: 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 CentOS possible default full paths are:

/usr/sbin/cpglockdump - from package: rgmanager

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

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