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takahe/docs/installation.rst
Andrew Godwin 807d546b12 Write some more docs
2022-11-23 13:05:14 -07:00

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Installation

We recommend running using the Docker/OCI image; this contains all of the necessary dependencies and static file handling preconfigured for you.

All configuration is done via either environment variables, or online through the web interface.

Prerequisites

  • SSL support (Takahē requires HTTPS)
  • Something that can run Docker/OCI images
  • A PostgreSQL 14 (or above) database
  • Hosting/reverse proxy that passes the HOST header down to Takahē
  • One of these to store uploaded images and media:
    • Amazon S3
    • Google Cloud Storage
    • Writable local directory (must be accessible by all running copies!)

Note that ActivityPub is a chatty protocol that has a lot of background activity, so you will need a platform that can run background tasks, in order to fetch profiles, retry delivery of posts, and more.

This means that a "serverless" platform like AWS Lambda or Google Cloud Run is not enough by itself; while you can use these to serve the web pages if you like, you will need to run the Stator runner somewhere else as well.

The flagship Takahē instance, takahe.social, runs inside of Kubernetes, with one Deployment for the webserver and one for the Stator runner.

What To Run

You need to run at least two copies of the Docker image:

  • One with no command or arguments specified, which will serve web traffic
  • One with the arguments (command) python manage.py runstator, which will run the background worker that handles asynchronous communication with other servers.

Both of these can have as many copies run as needed. Note that the image has required environment variables before it will boot, and this is the only way to configure it - see below.

Environment Variables

All of these variables are required for a working installation, and should be provided from the first boot.

  • PGHOST, PGPORT, PGUSER, PGDATABASE, and PGPASSWORD are the standard PostgreSQL environment variables for configuring your database.

  • TAKAHE_SECRET_KEY must be a fixed, random value (it's used for internal cryptography). Don't change this unless you want to invalidate all sessions.

  • TAKAHE_MEDIA_BACKEND must be one of local, s3 or gcs.

    • If it is set to local, you must also provide TAKAHE_MEDIA_ROOT, the path to the local media directory, and TAKAHE_MEDIA_URL, a fully-qualified URL prefix that serves that directory.
    • If it is set to gcs, you must also provide TAKAHE_MEDIA_BUCKET, the name of the bucket to store files in. The bucket must be publically readable and have "uniform access control" enabled.
    • If it is set to s3, you must also provide TAKAHE_MEDIA_BUCKET, the name of the bucket to store files in.

  • TAKAHE_MAIN_DOMAIN should be the domain name (without https://) that will be used for default links (such as in emails). It does not need to be the same as any domain you are hosting user accounts on.

  • TAKAHE_EMAIL_HOST and TAKAHE_EMAIL_PORT (along with TAKAHE_EMAIL_USER and TAKAHE_EMAIL_PASSWORD, if needed) should point to an SMTP server Takahe can use for sending email. Email is required, to allow account creation and password resets.

    • If you are using SendGrid, you can just set an API key in TAKAHE_EMAIL_SENDGRID_KEY instead.

  • TAKAHE_EMAIL_FROM is the email address that emails from the system will appear to come from.

  • TAKAHE_AUTO_ADMIN_EMAIL should be an email address that you would like to be automatically promoted to administrator when it signs up. You only need this for initial setup, and can unset it after that if you like.

  • TAKAHE_STATOR_TOKEN should be a random string that you are using to protect the stator (task runner) endpoint. You'll use this value later.

  • If your installation is behind a HTTPS endpoint that is proxying it, set TAKAHE_SECURE_HEADER to the header name used to signify that HTTPS is being used (usually X-Forwarded-Proto)

  • If you want to receive emails about internal site errors, set TAKAHE_ERROR_EMAILS to a comma-separated list of email addresses that should get them.

Making An Admin Account

Once the webserver is up and working, go to the "create account" flow and create a new account using the email you specified in TAKAHE_AUTO_ADMIN_EMAIL.

Once you set your password using the link emailed to you, you will have an admin account.

If your email settings have a problem and you don't get the email, don't worry; fix them and then follow the "reset my password" flow on the login screen, and you'll get another password reset email that you can use.

If you have shell access to the Docker image and would rather use that, you can run python3 manage.py createsuperuser instead and follow the prompts.

Adding A Domain

When you login you'll be greeted with the "make an identity" screen, but you won't be able to as you will have no domains yet.

You should select the "Domains" link in the sidebar and create one, and then you will be able to make your first identity.