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can not visit the web app made of angular cli on the digitalocean

Posted January 9, 2017 7.3k views
UbuntuDigitalOceanDeployment

I have built a simple web app using angular-cli 2,it works well in the local machine. now i tried to deploy it onto a digitalocean server,enter image description here

however when going to the web server link with http://ip address:4200, i can’t visit the web app.

Note: I can make sure the firewall is open to the web application on that port since in ufw status shows 4200 ALLOW Anywhere

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3 answers
helxsz628c1fbb91ed801cedb2 January 9, 2017

no, there is no specific error on both web browser side or server side. On the web browser side, it just show me ‘This site can’t be reached, refused to connect.’

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  • jtittle1 January 9, 2017

    @helxsz628c1fbb91ed801cedb2

    Ok, please try using:

    ng serve --host=IP_ADDRESS

    Where IP_ADDRESS is either 0.0.0.0 or your Droplet’s Public IP address. You don’t need to specify the port here, just the IP.

    I just ran both on a new Droplet with Node 7.x installed and it worked perfectly. Hopefully that’ll help get your app up and running so you can continue development.

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    • helxsz628c1fbb91ed801cedb2 January 9, 2017

      Thanks, jittle, using Droplet’s IP address works well, 0.0.0.0 doesn’t work

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      • jtittle1 January 9, 2017

        @helxsz628c1fbb91ed801cedb2

        No problem, though that’s a little strange too. Using 0.0.0.0 should always work, whether it’s NodeJS, NGINX, PHP, Python or whichever language you’re using. That said, as long as the Droplet IP works, then it’s a non-issue as you wouldn’t really push to production using 0.0.0.0 anyway – it’s more of a dev IP that simply allows you to respond to requests on any IP.

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jtittle1 January 9, 2017

@helxsz628c1fbb91ed801cedb2

Are you receiving any specific error when navigating to the URI (either in-browser or from the CLI)?

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tjamz January 28, 2021

You need your local computer to connect to the server via ssh tunneling.
ssh -L 4200:yourdigitaloceanipaddress:4200 user@yourdigitaloceanipaddress
and then
ng -serve host=0.0.0.0

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