:-O That just blew my mind - Thanks! :) On Friday, December 23, 2016 at 11:01:28 AM UTC-5, James Reeves wrote: > > I think this is something a lot of web developers take for granted, so > perhaps it isn't mentioned as much as it could be. > > The usual convention in Linux environments is to set the port via the PORT > environment variable. So on the command line it would be: > > PORT=3001 java -jar yourapp.jar > > That's what this line does in your source code: > > (Integer/parseInt (or (env :port) "3000")) > > It looks for the "PORT" environment variable, and if it doesn't find it > then it defaults to "3000". Then it converts the resulting string into an > integer. > > You may want to take a look at the Luminus deployment guide > <http://www.luminusweb.net/docs/deployment.md>. Luminus is a commonly > used project template, but the deployment docs apply to most Clojure web > projects and cover a range of setups. > > - James > > > On 23 December 2016 at 14:11, Seth Archambault <seth...@gmail.com > <javascript:>> wrote: > >> I'm posting this because right now someone is scrounging the internet for >> 3 hours to find this simple solution, I hope that they find this post >> sooner rather than later, and can move on to their next project! >> >> *TLDR* >> >> Goto /src/clj/myapp/server.clj >> >> Edit "3000" to be whatever you want: >> >> (defn -main [& args] >> (let [port (Integer/parseInt (or (env :port) "3000"))] >> (run-jetty app {:port port :join? false}))) >> >> Now Here's the journey of a new user to find this information... >> >> Let's say you installed Clojure with: >> >> lein new reagent myapp >> >> You built out your app, and everything went well! Time to deploy. >> >> You may have stumbled upon this DigitalOcean guide, How To Deploy a >> Clojure Web Application on Ubuntu 14.04 >> <https://www.digitalocean.com/community/tutorials/how-to-deploy-a-clojure-web-application-on-ubuntu-14-04> >> >> It worked mostly, though your app wants to run on port 3000, not 5000. No >> problem, just changed it in the nginx config >> >> 6 server { >> 7 listen 80; >> 8 server_name www.myapp.us myapp.us; >> 9 location / { >> 10 proxy_pass http://127.0.0.1:3000; >> 11 proxy_http_version 1.1; >> 12 proxy_set_header Connection ""; >> 13 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; >> 14 proxy_set_header Host $http_host; >> 15 access_log /var/www/myapp/logs/myapp.access.log; >> 16 error_log /var/www/myapp/logs/myapp.error.log; >> 17 } >> 18 } >> >> The recommended /etc/supervisor/conf.d/myapp.conf file worked great. Your >> site is launched and all is well! >> >> Okay so with that resounding success you decide you want to launch a >> second clojure app. >> >> First, if you're used to using php and nginx, you might be thinking you >> may be able to have your app run on the default port buy "look" for another >> url, maybe it's something you can easily change in the nginx config, or the >> supervisor config, or maybe the project.clj file. But a search on google >> seems to be focused on using separate port numbers: >> >> How can I run multiple Ring apps on the same server? >> <http://stackoverflow.com/questions/15732618/how-can-i-run-multiple-ring-apps-on-the-same-server> >> >> >> You don't necessarily think of your app as a "Ring" app - sure it's a >> library, but isn't this just Clojure? Anyways, this seems to be the >> solution, but how do we change the port? >> >> Searching google some more: >> >> Offical Lein Ring Instructions <https://github.com/weavejester/lein-ring> - >> not helpful >> How to set ring port based on profile >> <http://stackoverflow.com/questions/27945399/how-to-set-ring-port-based-on-profile> >> - >> something about profiles, not helpful >> You browser the rest of the front page of google and continue to get >> posts like this. >> >> If you come from a mainstream language like PHP, you're thinking "Hmm, >> deploying multiple apps is an extremely basic task.. Why do I feel like I'm >> the first one to ever do it?" >> >> Thinking that maybe it's just a standard Java thing, you start searching >> for "change java jar port". But these all yeild posts that recommend >> changing the port via commands like this: >> >> java -jar jenkins.war --httpPort=9090 >> >> None of these will works, but you will have to wait 60 seconds after >> typing it in each time to find out. >> Hours have passed. For the first time in your life as a programmer, >> Google has actually failed you.You are all alone now. >> >> Finally, you open the project in an editor you're experienced with - >> Sublime text - and search the whole project for port. >> >> You find the place to change the port at /src/clj/myapp/server.clj ! >> >> You are victorious, but you feel let down by Google, and frustrated that >> the solution was random flailing around. >> >> *Epilogue* >> >> I really love Clojure. This is the first time, in a bout 10 years I've >> been this excited about programming. Functional, lisp-like programming >> feels like an absolute revolution to someone who has only ever experienced, >> php, ruby, python, and javascript. >> >> However, early on in my Clojure journey I've encountered two extremely >> basic problems where the solutions simply don't seem to be findable on >> Google! There really is this feeling like, am I the first person to have >> eve encountered this problem? Am I the only one who is coming to Clojure >> from building web apps using Laravel (An excellent framework, unfortunately >> written in php) >> >> Maybe there aren't a whole lot of beginners, or maybe some of the >> beginner written material no longer applies to the new fancy ways to get >> started. This is concerning. As a newby I want to be able to jump in >> knowing that the foundation has already been built. As nice as it is to use >> a command like "lein new reagent myapp" - I don't want to do that if the >> result is I get a tree of code made for me that most of the community >> hasn't used yet. What's frustrating is that this folder structure isn't >> explicitly connected to the project.clj - like there's no way you could >> study the project.clj and determine that /src/clj/myapp/server.clj is >> used by anything. It just happens magicaly, the complexity is hidden... >> >> Again, I'm really enjoying clojure so far, and I really agree with the >> creators vision, but I'm concerned whenever really easy tasks take forever >> to do and seem to have hidden complexity. >> >> I'm interested in other peoples thoughts here. Have you felt in a similar >> way? What am I doing wrong? >> >> Thanks! >> Seth >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com >> <javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+u...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > >
-- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
