uwsgi: 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/src/uwsgi/2.0.12/bin/uwsgi - from package: uwsgi-devel
/usr/sbin/uwsgi - from package: uwsgi

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