crm_ticket: 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/crm_ticket - from package: pacemaker-cli

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

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