pacemaker_remoted: 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/pacemaker_remoted - from package: pacemaker-remote

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

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