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Node-RED

Support level: Community

What is Node-RED​

From https://nodered.org/

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Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways.

It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click.

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This requires modification of the Node-RED settings.js and installing additional Passport-js packages, see Securing Node-RED documentation for further details.

Preparation​

The following placeholders will be used:

  • authentik.company is the FQDN of authentik.
  • nodred.company is the FQDN of Node-RED.

Step 1​

In authentik, create an OAuth2/OpenID Provider (under Resources/Providers) with these settings:

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Only settings that have been modified from default have been listed.

  • Name: Node-RED

Protocol Settings

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Take note of the Client ID and Client Secret, you'll need to give them to Node-RED in Step 3.

Step 2​

In authentik, create an application (under Resources/Applications) which uses this provider. Optionally apply access restrictions to the application using policy bindings.

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Only settings that have been modified from default have been listed.

  • Name: Node-RED
  • Slug: nodered-slug
  • Provider: Node-RED

Optionally you can link directly to the authentication strategy

Step 3​

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Group based permissions are not implemented in the below example

Use npm to install passport-openidconnect

Navigate to the node-red node_modules directory, this is dependant on your chosen install method. In the official Node-RED docker container the node_modules directory is located in the data volume data/node_modules/. Alternatively enter the docker container docker exec -it nodered bash and cd /data/node_modules to utilise npm within the docker container.

Run the command npm install passport-openidconnect

Step 4​

Edit the node-red settings.js file /data/settings.js to use the external authentication source via passport-openidconnect.

adminAuth: {
type:"strategy",
strategy: {
        name: "openidconnect",
        label: 'Sign in with authentik',
        icon:"fa-cloud",
        strategy: require("passport-openidconnect").Strategy,
        options: {
                issuer: 'https://authentik.company/application/o/<application-slug>/',
                authorizationURL: 'https://authentik.company/application/o/authorize/',
                tokenURL: 'https://authentik.company/application/o/token/',
                userInfoURL: 'https://authentik.company/application/o/userinfo/',
                clientID: '<Client ID (Key): Step 2>',
                clientSecret: '<Client Secret: Step 2>',
                callbackURL: 'https://nodered.company/auth/strategy/callback/',
                scope: ['email', 'profile', 'openid'],
                proxy: true,
        verify: function(issuer, profile, done) {
                done(null, profile)
        }
      }
    },
    users: function(user) {
        return Promise.resolve({ username: user, permissions: "*" });
    }
},