Add an option to allow users to choose to what IP address the web ser…

…ver must bind to. Default to 0.0.0.0 (all IP addresses). (#826)

caravel/bin/caravel

@@ -24,6 +24,9 @@ manager.add_command('db', MigrateCommand)
 @manager.option(
     '-d', '--debug', action='store_true',
     help="Start the web server in debug mode")
+@manager.option(
+    '-a', '--address', default=config.get("CARAVEL_WEBSERVER_ADDRESS"),
+    help="Specify the address to which to bind the web server")
 @manager.option(
     '-p', '--port', default=config.get("CARAVEL_WEBSERVER_PORT"),
     help="Specify the port on which to run the web server")
@@ -33,7 +36,7 @@ manager.add_command('db', MigrateCommand)
 @manager.option(
     '-t', '--timeout', default=config.get("CARAVEL_WEBSERVER_TIMEOUT"),
     help="Specify the timeout (seconds) for the gunicorn web server")
-def runserver(debug, port, timeout, workers):
+def runserver(debug, address, port, timeout, workers):
     """Starts a Caravel web server"""
     debug = debug or config.get("DEBUG")
     if debug:
@@ -46,7 +49,7 @@ def runserver(debug, port, timeout, workers):
             "gunicorn "
             "-w {workers} "
             "--timeout {timeout} "
-            "-b 0.0.0.0:{port} "
+            "-b {address}:{port} "
             "--limit-request-line 0 "
             "--limit-request-field_size 0 "
             "caravel:app").format(**locals())

caravel/config.py

@@ -23,6 +23,7 @@
 ROW_LIMIT = 50000
 CARAVEL_WORKERS = 16
 
+CARAVEL_WEBSERVER_ADDRESS = '0.0.0.0'
 CARAVEL_WEBSERVER_PORT = 8088
 CARAVEL_WEBSERVER_TIMEOUT = 60