nogoga
I have a logger in a Phoenix app:
defmodule Module1 do
require Logger
def method1 do
Logger.debug("test123")
end
end
I can’t find the log file anywhere. Where is it?
Where Next?
Trending in Questions
Other Trending Topics
Latest Phoenix Threads
Latest on Elixir Forum
Sponsor Spotlight
Build Elixir applications with speed and confidence.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #ai
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #blog-post
- #ecto-query
- #elixirconf-us
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #elixirconf-eu
- #api
- #forms
- #security
- #hex
Our Sponsors
Build Elixir applications with speed and confidence.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Master modern tools, write cleaner code, and tackle real-world challenges.
Bringing learning, work and compliance together since 1987.
Producing high quality Elixir screencasts since 2017.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 1 to 8- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
NobbZ
This totally depends on your
Loggerconfiguration.AFAIR in a default generated project in dev environment,
Loggerjust emits to stdout.nogoga
nogoga
how?
it doesn’t.
NobbZ
Have you actually activated the
:consolebackend as well?Also make sure, that your
:compile_time_purge_levelis:debug. Last but not least, make sure that your function is actually called!nogoga
how to get it to log to a log file? or to a log file and console.
NobbZ
:backendstakes a list, so just add another backend…I’m not sure how exactly one could log into a file, since
:logger-application itself does only have the:consolebackend (at least thats what the documentation says). So perhaps you’ll need to write your own backend. Or depending on the way you start your application in production, you will just keep it logging to stdout and let your systemd, openrc or whatever you are using care for the rest.OvermindDL1
That is the logger_file_backend, just depend on that and follow its instructions (I.E. add it as a backend and configure what file you want it to go to and so forth).
There are backends for the system logger (if on linux this is often much smarter of an idea than a file logger), logging to databases, logging to other things, etc… etc…
nogoga
ok, what are your thoughts in which you’re not sure?