kill_timeout not respected

Questions / Help
1

I have kill_timeout defined in my config:

[http_service]
kill_timeout = 185

However, I can see in the logs it’s not being respected and my app is killed after 5 seconds:

2025-11-03T21:23:09Z app[080e45ef2d9258] sjc [info] INFO Sending signal SIGINT to main child process w/ PID 641
2025-11-03T21:23:14Z app[080e45ef2d9258] sjc [info] INFO Sending signal SIGTERM to main child process w/ PID 641

Am I missing something or doing something wrong?

2

kill_timeout is a top-level key, not under http_service. App configuration (fly.toml) · Fly Docs

3

Ah, dumb mistake. Thank you! Any way we can have flyctl give a warning or error on invalid/unknown keys instead of silently ignoring them?

4

there is fly config validate --strict which does this, I’m not sure why it is not the default but it’s probably something to do with legacy compatibility.

1 Like
5

Perfect, thank you!

6

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