Search/Retriever the logs from all server.
Set up all the remote server with ssh key login ssh-keygen -t rsa ssh-copy-id user@target use the hoping_copy_id.sh to send the copy id using proxycommand.
$ export FLASK_APP=app.py (app.py is the default app, so it's not required to set this command.) $ export FLASK_ENV=development
$ python3 -m unittest
$ python -m flask run
$ yum install python3-flask $ yum install python3-mod_wsgi
ln -s the conf file to apache conf.d folder ln -s (abs_path)/QMFRacklog.conf /etc/httpd/conf.d/