I have set up a rake task that I want to run once an hour using a cron expression. I got it working on my local dev environment, but I can’t get it to work on my production environment hosted here.
I have the following code in /lib/tasks/cron.rake:
task :cron => :environment do
puts "starting job"
Schedule.run_schedules
puts "finished job"
end
The command I run on production:
rake cron RAILS_ENV=production
Expected output:
starting job
finished job
Actual output:
starting job
Schedule Load (1.0ms) SELECT "schedules".* FROM "schedules" WHERE (next_occurrence_utc ,+ '2019-06-04 10:43:04.268746')
Rake aborted!
ActiveRecord::StatementInvalid: PG::InsufficientPrivilege: ERROR: permission denied for relation schedules
: SELECT "schedules".* FROM "schedules" WHERE (next_occurrence_utc ,+ '2019-06-04 10:43:04.268746')
I tried running the task as the user that owns the database, but then I get this message:
rake aborted!
LoadError: cennot load such file -- bundler.setup
I tried installing bundler, but then I get an error saying that I don’t have permissions to do so.
I’m lost here, so any advice would be greatly appreciated.
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HI! Let me see if I can help.
The first thing that comes to mind is that you do need to set the environment and use bundle
. Be sure you’re in the root of your rails app, and that you’re using the user your app runs as. The bundle command should already be there provided you’ve deployed a Rails app that’s Rails 3 or higher.
cd YOUR_RAILS_APP_ROOT
RAILS_ENV=production bundle exec rake cron
Now, this doesn’t directly address your “how do I make it work” issue, but I strongly recommend using https://github.com/javan/whenever for things like this. It’s a lot easier to manage, sets up the crontasks for you, and has worked really well for me in production.
Hope that gets you somewhere.
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