CODEWITHSUNDEEP
ruby-on-railsunicorn
user3120925
user3120925

Reputation: 21

Autorotation unicorn log file

I have unicorn config file in rails application:

config/unicorn.rb

app_name = "my_app"
root = "/home/user/my_sites/#{app_name}/current"

working_directory root
pid "#{root}/tmp/pids/unicorn.pid"
stderr_path "#{root}/log/unicorn.err.log"
stdout_path "#{root}/log/unicorn.out.log"

listen "/tmp/unicorn.#{app_name}.sock"
worker_processes 2
timeout 30

before_exec do |_|
  ENV["BUNDLE_GEMFILE"] = File.join(root, 'Gemfile')
end

How can auto rotate these log files?

For rails app and rails log I do: Rails.logger = Logger.new(Rails.root.join("log",Rails.env + ".log"), 3, 20*1024*1024)

What is the best solution for unicorn?

Upvotes: 2

Views: 7076

Answers (2)

Midhun
Midhun

Reputation: 21

Under /etc/logrotate.d create a file name called unicorn (or the name of your app) and add below lines

/var/log/unicorn/*log {
    daily
    rotate 10
    missingok
    notifempty
    compress
    sharedscripts
    postrotate
        /bin/kill -USR1 $(cat /var/log/unicorn/unicorn.pid 2>/dev/null) 2>/dev/null || :
    endscript
}

According to Unicorn's documentation:

USR1 - reopen all logs owned by the master and all workers See Unicorn::Util.reopen_logs for what is considered a log.

So /bin/kill -USR1 will send this signal to the unicorn's process using its pid from /var/log/unicorn/unicorn.pid (you may need to update according to yours).

postrotate is executed at end of logrotate's rotation.

Upvotes: 2

NARKOZ
NARKOZ

Reputation: 27901

Use logrotate

See https://stackoverflow.com/a/4883967/159721 for details

Upvotes: 0

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