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Introduction

This is a Helm chart for installing Mastodon into a Kubernetes cluster. The basic usage is:

edit values.yaml or create a separate yaml file for custom values
helm dep update
helm install --namespace mastodon --create-namespace my-mastodon ./ -f path/to/additional/values.yaml

This chart has been tested on Helm 3.0.1 and above.

Configuration

The variables that must be configured are:

password and keys in the mastodon.secrets, postgresql, and redis groups; if left blank, some of those values will be autogenerated, but will not persist across upgrades.
SMTP settings for your mailer in the mastodon.smtp group.

Administration

You can run admin CLI commands in the web deployment.

kubectl -n mastodon exec -it deployment/mastodon-web -- bash
tootctl accounts modify admin --reset-password

kubectl -n mastodon exec -it deployment/mastodon-web -- tootctl accounts modify admin --reset-password

Missing features

Currently this chart does not support:

Hidden services
Swift

Upgrading

Because database migrations are managed as a Job separate from the Rails and Sidekiq deployments, it’s possible they will occur in the wrong order. After upgrading Mastodon versions, it may sometimes be necessary to manually delete the Rails and Sidekiq pods so that they are recreated against the latest migration.

Upgrades in 2.0.0

Fixed labels

Because of the changes in #19706 the upgrade may fail with the following error: Error: UPGRADE FAILED: cannot patch "mastodon-sidekiq"

If you want an easy upgrade and you're comfortable with some downtime then simply delete the -sidekiq, -web, and -streaming Deployments manually.

If you require a no-downtime upgrade then:

run helm template instead of helm upgrade
Copy the new -web and -streaming services into services.yml
Copy the new -web and -streaming deployments into deployments.yml
Append -temp to the name of each deployment in deployments.yml
kubectl apply -f deployments.yml then wait until all pods are ready
kubectl apply -f services.yml
Delete the old -sidekiq, -web, and -streaming deployments manually
helm upgrade like normal
kubectl delete -f deployments.yml to clear out the temporary deployments

PostgreSQL passwords

If you've previously installed the chart and you're having problems with postgres not accepting your password then make sure to set username to postgres and password and postgresPassword to the same passwords.

postgresql:
  auth:
    username: postgres
    password: <same password>
    postgresPassword: <same password>

And make sure to set password to the same value as postgres-password in your mastodon-postgresql secret: kubectl edit secret mastodon-postgresql

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