sap_redhat_cluster_connector: 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/sap_redhat_cluster_connector - from package: resource-agents-sap

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

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