add log formatter in logfmt format

server.py

@@ -10,11 +10,15 @@ from functools import wraps
 
 app = Flask(__name__)
 
+logfmt = 'time=%(asctime)s level=%(levelname)s app=%(name) msg=%(message)s'
+
 logrotate = RotatingFileHandler(
     '/var/log/login/server',
     backupCount=10,
 )
 
+logrotate.setFormatter(logfmt)
+
 logrotate.setLevel(logging.DEBUG)
 
 app.logger.addHandler(logrotate)