Sidekiq server is not processing scheduled jobs when started using systemd - jruby

Question

I have a cuba application which I want to use sidekiq with.
This is how I setup the config.ru:
require './app'
require 'sidekiq'
require 'sidekiq/web'
environment = ENV['RACK_ENV'] || "development"
config_vars = YAML.load_file("./config.yml")[environment]
Sidekiq.configure_client do |config|
config.redis = { :url => config_vars["redis_uri"] }
end
Sidekiq.configure_server do |config|
config.redis = { url: config_vars["redis_uri"] }
config.average_scheduled_poll_interval = 5
end
# run Cuba
run Rack::URLMap.new('/' => Cuba, '/sidekiq' => Sidekiq::Web)
I started sidekiq using systemd. This is the systemd script which I adapted from the sidekiq.service on the sidekiq site.:
#
# systemd unit file for CentOS 7, Ubuntu 15.04
#
# Customize this file based on your bundler location, app directory, etc.
# Put this in /usr/lib/systemd/system (CentOS) or /lib/systemd/system (Ubuntu).
# Run:
# - systemctl enable sidekiq
# - systemctl {start,stop,restart} sidekiq
#
# This file corresponds to a single Sidekiq process. Add multiple copies
# to run multiple processes (sidekiq-1, sidekiq-2, etc).
#
# See Inspeqtor's Systemd wiki page for more detail about Systemd:
# https://github.com/mperham/inspeqtor/wiki/Systemd
#
[Unit]
Description=sidekiq
# start us only once the network and logging subsystems are available,
# consider adding redis-server.service if Redis is local and systemd-managed.
After=syslog.target network.target
# See these pages for lots of options:
# http://0pointer.de/public/systemd-man/systemd.service.html
# http://0pointer.de/public/systemd-man/systemd.exec.html
[Service]
Type=simple
Environment=RACK_ENV=development
WorkingDirectory=/media/temp/bandmanage/repos/fall_prediction_verification
# If you use rbenv:
#ExecStart=/bin/bash -lc 'pwd && bundle exec sidekiq -e production'
ExecStart=/home/froy001/.rvm/wrappers/fall_prediction/bundle exec "sidekiq -r app.rb -L log/sidekiq.log -e development"
# If you use the system's ruby:
#ExecStart=/usr/local/bin/bundle exec sidekiq -e production
User=root
Group=root
UMask=0002
# if we crash, restart
RestartSec=1
Restart=on-failure
# output goes to /var/log/syslog
StandardOutput=syslog
StandardError=syslog
# This will default to "bundler" if we don't specify it
SyslogIdentifier=sidekiq
[Install]
WantedBy=multi-user.target
The code calling the worker is :
raw_msg = JSON.parse(req.body.read, {:symbolize_names => true})
if raw_msg
ts = raw_msg[:ts]
waiting_period = (1000*60*3) # wait 3 min before checking
perform_at_time = Time.at((ts + waiting_period)/1000).utc
FallVerificationWorker.perform_at((0.5).minute.from_now, raw_msg)
my_res = { result: "success", status: 200}.to_json
res.status = 200
res.write my_res
else
my_res = { result: "not found", status: 404}.to_json
res.status = 404
res.write my_res
end
I am only using the default q.
My problem is that the job is not being processed at all.

Answer 1

After you run systemctl enable sidekiq so that it starts at boot and systemctl start sidekiq so that it starts immediately, then you should have some logs to review which will provide some detail about any failure to start:
sudo journalctl -u sidekiq
Review the logs, review the systemd docs and adjust your unit file as needed. You can find all the installed systemd documentation with apropos systemd. Some of the most useful man pages to review are systemd.service,systemd.exec and systemd.unit