consul: 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/consul - from package: consul

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