ShuJuQiu: Sidekiq does not support logfile and pidfile since 6.0

A typical Sidekiq config file is like

:verbose: false
:concurrency: 4
:strict: false
:logfile: log/sidekiq.log
:pidfile: tmp/pids/sidekiq.pid
:queues:
  - default
  - mailers
development:
  :verbose: true
  :concurrency: 2
  :logfile: log/sidekiq_dev.log
  :pidfile: tmp/pids/sidekiq_dev.pid

However, the logfile and pidfile do not work with version 6.2.0. That's because the changes on 6.0.

Remove the daemonization
Remove logfile
Remove pidfile Check here for discussion, why daemonization is bad, the pidfile problem

My current workaround:

Logfile: redirect stdout to a file
Pidfile: get from ps

pid=`ps aux | grep sidekiq | grep -v grep | awk '{print $2}'`;
kill $pid
cd /var/www/$proj/current/
bundle exec sidekiq -e production -C config/sidekiq.yml >& log/sidekiq.log &