I can't seem to figure this out. I created a new Ubuntu VM on Azure and I can SSH into it. I installed Node (which I've done many times) and I tried to run the test app from nodejs.org:
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');
However, when I go to the IP (which is the same one I SSHed into the box from) + :1337 it just never loads. I tried :80 too, but still no luck. I also tried running python -m SimpleHTTPServer on :8000 and I still can't view the site. I must be missing something.
Just so you know, I'm just trying to setup a simple dev box with a bunch of projects on it. I want to be able to work on my projects anywhere. Some are 100% front-end JS projects so SimpleHTTPServer would be fine. Some are Node projects too. In either case, I just want to be able to hit some port and see what I'm working on.
Oh also I opened up the Azure firewall to the VM, redirecting traffic from port 80 to port 1337 (https://www.evernote.com/shard/s5/sh/3aef8e76-04f6-48cb-84f9-32462bc425a7/f0cd749773a9d09cee66d00fe3e707c0)
You are listening loopback ip address. Try .listen(1337, '0.0.0.0'); to listen on all network interfaces
urgh azure. i cannot get port 80 open. is it the machine iptables?? some azure magical thing.
i know it cant be that hard.
unlike your view i do not see 'NONE' for load balancer. i see '--'/ whatever that means.
Related
what I have:
I made a simple web application using Flask, which woks great on the localhost.
what I want to achieve:
I want to deploy it so it is visible in the internet.
Because Flask says that the production server should not be used for deployment I installed gunicorn.
I managed to get it working on localhost (running gunicorn server:app).
Then I tried to make it public using the -b 0.0.0.0:5000 option. it said it is running on 192.168....:5000 Now I could access the website using that ip address from my computer and also from my phone connected to the same wifi. however I was unable to connect to the website when I didn't use this wifi.
when I searched about this, I found out that the 192.168.... ip address range is reserved to the local network and cannot be accessed from anywhere else.
how do I need to run the script so it is accessible from everywhere? Do I need to modify the firewall settings? Maybe there is a better way to deploy such an app on the local machine using a different framework?
Just some additional information:
python version: 3.9
I am using a venv (and installed flask and gunicorn into it)
os: macos 11.6.1 (I could run it on an Ubuntu machine if that is easier)
This question isn't anything related with Python or Gunicorn but to networking (so maybe StackOverflow isn't the correct place to ask but other community like ServerFault)
Currently your application is already exposed on your machine in the defined port, so next step would be to forward all the traffic that comes to your router to there.
In order to do that, you will have to configure the firewall of your router to accept incoming traffic through a desired port and finally forward the traffic which comes from that port to your machine in the port 5000.
Also, in the case that you have everything already configured, it will only work if your ISP is providing you a single IPv4, what currently doesn't happen anymore but you actually are sharing that with few more people. Other option would be that you configure IPv6 incoming traffic.
As you can see, this isn't a simple task neither one that should be done without proper care, since you would be literally opening your network to possible attackers.
So, in order to simplify it at the most for you, since you already have Gunicorn, I would recommend you to use any of the resources exposed by other users as Heroku or Netlify which are free for a single application and will fulfill your expectations without requiring high amount of networking knowledge.
You would need to do the following steps:
read up and learn a lot about security for Web servers, then read some more, it is fraught with risks
find your Mac's IP address on your local network and make sure it is fixed, i.e. set as static on your Mac (under "System Preferences->Network") or reserved in your router's DHCP tables (by putting your Mac's MAC address in its allocation tables) so that it always gets the same local address on your internal network when it boots
log into your router and set up "Port Forwarding" to forward external requests (coming from the Internet) for port 5000 (or some other port) to your Mac's fixed IP address and the port 5000 where Gunicorn is serving
log into your router and find your WAN IP address, or go to http://whatsmyip.com to get the address you need to put in your browser, or your friends need to put in their browsers to see your shiny new website
as it stands, this will work until the next time your router reboots when your ISP will likely allocate it a new IP address. If you want it permanent, you need to either 1) ask your ISP for a static IP address, or 2) subscribe a DDNS service (e.g. noip.com or dyndns.com) or 3) tell your friends your new IP address every time you reboot your router
I do not know anything about gunicorn. But what I used to use when needing to deploy a flask app was pythonanywhere. They have a great and totally free hosting service. It's really fast in deploying, needs no resources from your computer and is just great. Also you would have to forward the port 5000 for your computer to enable other devices not in the same network to access your computer/flask app. That comes with security issues. However, you do not need any of that when using pythonanywhere.
There are also other great hosting services like that one. It's just the only one I know and used yet but you'll find others for sure if you don't like that one.
I have a python application hosted by a node.js frontend. I am running that on a linux vm on Google Cloud virtual machine (GCP).
node appname runserver 8080 command starts local server within VM but I am wondering what would be step by step process to access it via a DNS from outside world.
Or if there is better approach to host python ML applications behind a web interface, then please suggest.
You need to use forever for this.
Forever will move the node process to the background and service will keep running in the background even if you log out of the server. And In order to access from outside point a DNS domain to this IP address of the machine and then Proxy Pass the request on port 80 to the port your service is running on.
Then you will be able to access it via domain name.
Look for ProxyPass directive in the Http server. That would work for you. :D
I deployed my flask rest api on IIS 8 to windows server 2012 r2. I followed this article. (https://medium.com/#bilalbayasut/deploying-python-web-app-flask-in-windows-server-iis-using-fastcgi-6c1873ae0ad8) I can browse the rest api on the local server but I can not browse the api from other computers on public internet. I can ping the public IP of the server without problem. There is no firewall rule that blocks the server. Would you please help me?
PS. I am trying to browse by the IP, 185.201.212.219. Is it related to this?
edit1: I will try this which is from flask documentation.
Externally Visible Server
If you run the server you will notice that the server is only accessible from your own computer, not from any other in the network. This is the default because in debugging mode a user of the application can execute arbitrary Python code on your computer.
If you have the debugger disabled or trust the users on your network, you can make the server publicly available simply by adding --host=0.0.0.0 to the command line:
flask run --host=0.0.0.0
This tells your operating system to listen on all public IPs.
edit2: Adding host parameter didn't work.
Is there any ideas?
Thanks in advance.
All ports except 80 was open. When I set port=80, all my troubles seem so far away :)
Background
So after about a year of having a GoDaddy cloud service, and super disappointed with it from the get-go. Once they announced that they would be discontinuing Cloud Server services, it was like a sign from the heavens.
I then created a Google Cloud account. One of the biggest reasons I got a Cloud Server to begin with was to have an eclipse Che instance, an IDE wherever you are! I love it, but despite the temporary partnership between Bitnami and GoDaddy, launching a Eclipse instance with them with such a mind-numbing task since their internal Factory build still required a ton of Docker configurations...
And though I can appreciate the fact that I did learn the ins-and-outs of configuring Dockers Network settings, which is not something to wince at... As soon as I got my Google Cloud account it was simply a 1 2 3 and go!
Question
Whilst I'm running an Eclipse chat instance, what is the proper way to port-forward a given work space to my local machine? The scenario is simple...
I created a Python stack of which I am using Django but when I run server, of course default being the local IP to the project, I have yet to find the easy and more than likely existing standard way to run the Django server and have the eclipse Che create the URL to the project. I'm ninety-nine percent sure that I'm going about this the wrong way given the fact that even some of the demo stack projects with Node or Python are plug-and-play.
PS: I am able to ssh into the workspace no issue, I'm just confused on how to port forward from remote to local as I've only really done it the other way around.. ssh -R ... or -L?
What you need is SSH Tunnel, which is -L. If you need to send a port from local to server that is called a Reverse SSH Tunnel, which is -R.
so simple command
ssh -L <localport>:127.0.0.1:<remoteport> <user>#<server>
Some extension to the other answer mentioning ssh tunneling...
If you run a docker-dev on a server (e.g. 192.168.1.123) not being your local machine in eclipse-che that provides some web service you want to access, then find out the IP address of the docker-dev, e.g. by opening a terminal in your eclipse che workspace and executing ip addr. There you will see some 172.17.x.x that is accessible only from the server. Assume the service in docker-dev is listening on port 12345, then you need the following ssh port forwarding from your local machine to access it:
ssh -L 8888:172.17.0.2:12345 192.168.1.123
While the ssh connection is open, you can access the web service with you browser by accessing http://127.0.0.1:8888/
I have a Django development server running on a remote centos VM on another lan. I have set up port forwarding using Secure CRT to access the web page through my browser from my desk pc. I am currently not using apache with the development server and is shutdown.
I start the server by running python manage.py runserver 0.0.0.0:80.
When I type either the ip or www.localhost.com into the web browser, my URL is read as if it has been doubled with the host being read as if it was also the path.
Page not found (404)##
Request Method: GET
Request URL: http://www.localhost.com/http://www.localhost.com/
When I try to access the development server from within the same LAN the page loads up fine.
I have been searching through the django documentation and stack overflow, but I have yet to find a similar problem to this. Does anyone have any thoughts on why this may be happening and what could be a possible solution?
Thank you very much in advance!
It looks like the request URL is incorrect:
http://www.localhost.com/http://www.localhost.com/ should probably be http://actual_machine_IP.com/
I'd start searching there. You won't be able to access the VM's port 80 from a different lan using localhost as the hostname since localhost is probably already set in your hosts file.
If you want to test your dev environ remotely, can I suggest either setting up Apache properly with port 80 (as opposed to using django's dev server--privilege restrictions and all that can be circumvented with sudo and other bad practice) or use a pre-built shared dev service like vagrant share.