| "use strict";(self.webpackChunkdocs_v_2=self.webpackChunkdocs_v_2||[]).push([[9317],{18826:(e,t,n)=>{n.r(t),n.d(t,{assets:()=>s,contentTitle:()=>a,default:()=>c,frontMatter:()=>o,metadata:()=>l,toc:()=>d});var i=n(83117),r=(n(67294),n(3905));const o={title:"Additional Networking Settings",hide_title:!0,sidebar_position:5,version:1},a=void 0,l={unversionedId:"installation/networking-settings",id:"installation/networking-settings",title:"Additional Networking Settings",description:"Additional Networking Settings",source:"@site/docs/installation/networking-settings.mdx",sourceDirName:"installation",slug:"/installation/networking-settings",permalink:"/docs/installation/networking-settings",draft:!1,editUrl:"https://github.com/apache/superset/tree/master/docs/docs/installation/networking-settings.mdx",tags:[],version:"current",sidebarPosition:5,frontMatter:{title:"Additional Networking Settings",hide_title:!0,sidebar_position:5,version:1},sidebar:"tutorialSidebar",previous:{title:"Configuring Superset",permalink:"/docs/installation/configuring-superset"},next:{title:"Caching",permalink:"/docs/installation/cache"}},s={},d=[{value:"Additional Networking Settings",id:"additional-networking-settings",level:2},{value:"CORS",id:"cors",level:3},{value:"Domain Sharding",id:"domain-sharding",level:3},{value:"Middleware",id:"middleware",level:3}],p={toc:d},u="wrapper";function c(e){let{components:t,...n}=e;return(0,r.kt)(u,(0,i.Z)({},p,n,{components:t,mdxType:"MDXLayout"}),(0,r.kt)("h2",{id:"additional-networking-settings"},"Additional Networking Settings"),(0,r.kt)("h3",{id:"cors"},"CORS"),(0,r.kt)("p",null,"To configure CORS, or cross-origin resource sharing, the following dependency must be installed:"),(0,r.kt)("pre",null,(0,r.kt)("code",{parentName:"pre",className:"language-python"},"pip install apache-superset[cors]\n")),(0,r.kt)("p",null,"The following keys in ",(0,r.kt)("inlineCode",{parentName:"p"},"superset_config.py")," can be specified to configure CORS:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("inlineCode",{parentName:"li"},"ENABLE_CORS"),": Must be set to ",(0,r.kt)("inlineCode",{parentName:"li"},"True")," in order to enable CORS"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("inlineCode",{parentName:"li"},"CORS_OPTIONS"),": options passed to Flask-CORS\n(",(0,r.kt)("a",{parentName:"li",href:"https://flask-cors.corydolphin.com/en/latest/api.html#extension"},"documentation"),")")),(0,r.kt)("h3",{id:"domain-sharding"},"Domain Sharding"),(0,r.kt)("p",null,"Chrome allows up to 6 open connections per domain at a time. When there are more than 6 slices in\ndashboard, a lot of time fetch requests are queued up and wait for next available socket.\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/apache/superset/pull/5039"},"PR 5039")," adds domain sharding to Superset,\nand this feature will be enabled by configuration only (by default Superset doesn\u2019t allow\ncross-domain request)."),(0,r.kt)("p",null,"Add the following setting in your ",(0,r.kt)("inlineCode",{parentName:"p"},"superset_config.py")," file:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("inlineCode",{parentName:"li"},"SUPERSET_WEBSERVER_DOMAINS"),": list of allowed hostnames for domain sharding feature.")),(0,r.kt)("p",null,"Please create your domain shards as subdomains of your main domain for authorization to\nwork properly on new domains. 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