--- title: Application Monitoring by Sentry layout: docs nav: firecracker redirect_from: /docs/reference/sentry/ date: 2025-07-21 --- <div class="warning icon"> **Heads up**: Provisioning new Sentry projects through Fly.io (`fly ext sentry create`) is no longer available. Existing projects keep working, and this page sticks around for the people using them. Need error tracking on a new app? [Sign up with Sentry directly](https://sentry.io/signup/) and set your `SENTRY_DSN` as an app secret. </div> [Sentry](https://sentry.io/) is a developer-first application monitoring platform that helps you identify and fix software problems before they impact your users. Through our former partnership with Sentry, organizations that provisioned Sentry through Fly.io received a year’s worth of [Team Plan](https://sentry.io/pricing) credits. ## Access your Sentry project Apps provisioned through Fly.io have the `SENTRY_DSN` secret set, so the environment variable is available at runtime. Most Sentry SDKs will automatically pick this up and begin sending events. You can open the Sentry dashboard for your app by running: ``` fly ext sentry dashboard ``` ## Instrument your application To start sending events to Sentry, you’ll need to instrument your app with the relevant SDK. See [Sentry's documentation for supported platforms](https://docs.sentry.io/platforms/). ## Sentry Plan details Your organization received one year of Sentry’s Team plan, which includes monthly: - 50k errors - 100k [performance units](https://sentry.io/changelog/2023-5-9-introducing-performance-units/) - 500 [session replays](https://sentry.zendesk.com/hc/en-us/articles/27282849806235-How-are-Replays-charged-Is-it-based-on-when-I-hit-play) - 1GB [attachments](https://docs.sentry.io/platforms/native/guides/minidumps/enriching-events/attachments/) If you need more than these allowances, sign in to your Sentry account and review upgrade options in the **Settings > Usage & Billing > Subscription** section. <div class="important"> If you upgrade to a paid plan, you will not be able to return to the Fly.io‑sponsored promotional plan. </div> ## After the one-year plan ends At the end of the promotional period, your Sentry organization will no longer have access to the sponsored Team plan. You have two options: ### 1. Let the plan expire - Your organization will be downgraded to the free Developer plan - Monitoring will continue, but with lower plan limits - Events sent that exceed the quota will be dropped - Existing events and logs remain accessible for up to 30 days, based on Sentry's data retention policy For more information, see [https://sentry.zendesk.com/hc/en-us/articles/27118913621019](https://sentry.zendesk.com/hc/en-us/articles/27118913621019). ### 2. Upgrade to a paid Sentry plan - You can maintain access to higher quotas and additional features - You can enable new SSO options (Google, GitHub, etc.) - You can optionally disable Fly.io SSO ## Updating SSO and login methods Sentry organizations created via the Fly.io integration use Fly.io SSO by default. After your plan ends (or if you upgrade), you can switch to standard login: 1. Go to **Organization Settings > Auth Settings** in Sentry 1. Click **Disable Fly.io Auth** 1. Sentry will email each organization member to set a password for their account This allows you to log in with email and password, and to enable other SSO providers depending on your Sentry subscription level. For details, see [https://sentry.zendesk.com/hc/en-us/articles/24206530196251](https://sentry.zendesk.com/hc/en-us/articles/24206530196251). ## Do I need to migrate anything after my plan expires? No migration steps are needed. Your existing Sentry organization, project, data, alerts, and SDK configuration remain intact. When your plan changes: - Sentry will retain historical data according to the new plan’s retention limits - The `SENTRY_DSN` will continue working unless you explicitly remove or rotate it - The Sentry SDK will continue to send events, but any events that exceed quota will be dropped For more details, see [https://sentry.zendesk.com/hc/en-us/articles/36501551064219](https://sentry.zendesk.com/hc/en-us/articles/36501551064219).

fly ext sentry dashboard