{"id":1034,"date":"2015-02-27T13:57:03","date_gmt":"2015-02-27T21:57:03","guid":{"rendered":"http:\/\/blog.portnumber53.com\/?p=1034"},"modified":"2015-02-27T13:57:03","modified_gmt":"2015-02-27T21:57:03","slug":"mapping-multiple-domains-to-different-nodejs-ports-using-nginx","status":"publish","type":"post","link":"https:\/\/blog.portnumber53.com\/index.php\/2015\/02\/27\/mapping-multiple-domains-to-different-nodejs-ports-using-nginx\/","title":{"rendered":"Mapping multiple domains to different nodejs ports using nginx"},"content":{"rendered":"

\n\tAt the moment of this writing, I only have one VPS, so it wouldn't take long for me to be running more than 1 node app in it.\n<\/p>\n

\n\tSince I want to keep all of them working in this semi-production environment (and in a box I have at home). node cannot be using the same port and I don't want to keep stop\/restarting an app everytime I'm working on it.\n<\/p>\n

\n\t \n<\/p>\n

\n\tSince I've been pretty happy using nginx as a reverse proxy for Apache and a nodejs, then I decided to keep using it and figure how to have multiple nodejs apps running.\n<\/p>\n

\n\t \n<\/p>\n

\n\tMy scenario, (YMMV):\n<\/p>\n

\n\t– I want to have mutiple domains resolving to the same box\n<\/p>\n

\n\t– I don't want to change the URL for socket.io\n<\/p>\n

\n\t– I know I need to use different ports for different nodejs apps\n<\/p>\n

\n\t \n<\/p>\n

\n\tSo after googling for a while and discovering that IF is evil<\/a>. I stumble upon "map" which let me do exactly what I wanted:\n<\/p>\n

\n\tHere's the relevant sections of nginx.com (the names have been changed to protect the innocents<\/a>)\n<\/p>\n

\n\t \n<\/p>\n

\nhttp {\n.\n.\n.\n    map $http_host $custom_nodejs_port {\n        default 50000;\n        domain1.com   50000;\n        domain2.com   30000;\n    }\n.\n.\n\nserver {\n        location \/socket.io\/ {\n            rewrite ^\/node(.*)$ $1 break;\n            proxy_pass http:\/\/127.0.0.1:$custom_nodejs_port;\n\n            proxy_http_version 1.1;\n            proxy_set_header Upgrade $http_upgrade;\n            proxy_set_header Connection "upgrade";\n\n            proxy_set_header Host $host;\n        }\n.\n.\n}<\/pre>\n
\n\tThis way I can have multiple nodejs applications running in different ports and nginx will map connections to different domains to them.\n<\/p>\n
\n\tThe only downside is that I need to reload the config and it's not automatic. Maybe soon…..\n<\/p>\n
\n\t \n<\/p>\n
\n\t \n<\/p>\n
\n\t <\/p>\n","protected":false},"excerpt":{"rendered":"
At the moment of this writing, I only have one VPS, so it wouldn't take long for me to be running more than 1 node app in it. Since I want to keep all of them working in this semi-production environment (and in a box I have at home). node…  Continue reading → <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[230,249,250,258,260],"class_list":["post-1034","post","type-post","status-publish","format-standard","hentry","category-linux","tag-map","tag-multiple-apps","tag-multiple-ports","tag-nginx","tag-nodehs"],"_links":{"self":[{"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/posts\/1034","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/comments?post=1034"}],"version-history":[{"count":0,"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/posts\/1034\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/media?parent=1034"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/categories?post=1034"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.portnumber53.com\/index.php\/wp-json\/wp\/v2\/tags?post=1034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}