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Mention healthcheck as part of steps instead

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David Heinemeier Hansson
2023-02-18 16:23:46 +01:00
parent 933ece35ab
commit 7afa9e0815
1 changed files with 4 additions and 5 deletions
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README.md
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@@ -22,8 +22,6 @@ env:
Then edit your `.env` file to add your registry password as `MRSK_REGISTRY_PASSWORD` (and your `RAILS_MASTER_KEY` for production with a Rails app). Then edit your `.env` file to add your registry password as `MRSK_REGISTRY_PASSWORD` (and your `RAILS_MASTER_KEY` for production with a Rails app).
Finally, you have to ensure your application can answer `200 OK` to a `GET /up` request (or configure an alternative health path). That's how the zero-downtime deploy process knows that your new version is ready to serve traffic.
Now you're ready to deploy to the servers: Now you're ready to deploy to the servers:
``` ```
@@ -39,9 +37,10 @@ This will:
5. Push the image to the registry. 5. Push the image to the registry.
6. Pull the image from the registry on the servers. 6. Pull the image from the registry on the servers.
7. Ensure Traefik is running and accepting traffic on port 80. 7. Ensure Traefik is running and accepting traffic on port 80.
8. Stop any containers running a previous versions of the app. 8. Ensure your app responds with `200 OK` to `GET /up`.
9. Start a new container with the version of the app that matches the current git version hash. 9. Stop any containers running a previous versions of the app.
10. Prune unused images and stopped containers to ensure servers don't fill up. 10. Start a new container with the version of the app that matches the current git version hash.
11. Prune unused images and stopped containers to ensure servers don't fill up.
Voila! All the servers are now serving the app on port 80. If you're just running a single server, you're ready to go. If you're running multiple servers, you need to put a load balancer in front of them. Voila! All the servers are now serving the app on port 80. If you're just running a single server, you're ready to go. If you're running multiple servers, you need to put a load balancer in front of them.