sqlalchemy-migrate: 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

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/sqlalchemy-migrate - from package: python-migrate

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