Rails: How to restart sidekiq?

So after you find you PID, you can use the below commands: the first will stop the workers from getting new jobs and will let existing jobs complete:

kill -USR1 [PID]

after that, you can kill the process using:

kill -TERM [PID]

Also, there is a page on sidekiq/wiki about this called Signals.

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Here is the signal page.

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Check video

For finding PIDs one can use:

ps aux | grep sidekiq

To keep the daemon running you should definitely have some good error handling in the HardWorker classes, but you can also use the command below to restart the sidekiq runners if they are not found in the system processes.

x=`ps aux | grep sidekiq | grep -v grep | awk '{print $2}'`; [ "$x" == "" ] && cd /path/to/deploy && bundle exec sidekiq -d -L /path/to/deploy/log/sidekiq.log -C /path/to/deploy/config/sidekiq.yml -e production

This basically looks for the PID using ps aux | grep sidekiq | grep -v grep | awk '{print $2}' and then stores it in variable x. Then, if it's empty, it will run a daemonized sidekiq process.

You can stick this guy into a cron job or something. But if your jobs are failing continually, you'll definitely want to figure out why.

EDIT: Added path to deploy from cron.

Start:

$ bundle exec sidekiq -d -P tmp/sidekiq.pid -L log/sidekiq.log 

where -d demonize, -P pid file, -L log file.

Stop:

$ bundle exec sidekiqctl stop tmp/sidekiq.pid 0
Sidekiq shut down gracefully.

where 0 is number of seconds to wait until Sidekiq exits.