0002_sidekiq_hooks.config

files:
  "/opt/elasticbeanstalk/hooks/appdeploy/pre/03_mute_sidekiq.sh":
    mode: "000755"
    content: |
      #!/bin/bash
      . /opt/elasticbeanstalk/support/envvars
      PIDFILE=/var/app/containerfiles/pids/sidekiq.pid
      if [ -f ${PIDFILE} ]
      then
        kill -USR1 `cat ${PIDFILE}`
        rm -rf /var/app/containerfiles/pids/sidekiq.pid
      fi
  "/opt/elasticbeanstalk/hooks/appdeploy/post/50_restart_sidekiq.sh":
    mode: "000755"
    content: |
      #!/bin/bash
      initctl restart sidekiq || initctl start sidekiq
  "/opt/elasticbeanstalk/hooks/configdeploy/pre/03_mute_sidekiq.sh":
    mode: "000755"
    content: |
      #!/bin/bash
      . /opt/elasticbeanstalk/support/envvars
      PIDFILE=/var/app/containerfiles/pids/sidekiq.pid
      if [ -f ${PIDFILE} ]
      then
        kill -USR1 `cat ${PIDFILE}`
        rm -rf /var/app/containerfiles/pids/sidekiq.pid
      fi
  "/opt/elasticbeanstalk/hooks/configdeploy/post/50_restart_sidekiq.sh":
    mode: "000755"
    content: |
      #!/bin/bash
      initctl restart sidekiq || initctl start sidekiq
  "/opt/elasticbeanstalk/hooks/restartappserver/pre/03_mute_sidekiq.sh":
    mode: "000755"
    content: |
      #!/bin/bash
      . /opt/elasticbeanstalk/support/envvars
      PIDFILE=/var/app/containerfiles/pids/sidekiq.pid
      if [ -f ${PIDFILE} ]
      then
        kill -USR1 `cat ${PIDFILE}`
        rm -rf /var/app/containerfiles/pids/sidekiq.pid
      fi
  "/opt/elasticbeanstalk/hooks/restartappserver/post/50_restart_sidekiq.sh":
    mode: "000755"
    content: |
      #!/bin/bash
      initctl restart sidekiq || initctl start sidekiq

Any reason you have to rimraf the sidekiq.pid?

rm -rf /var/app/containerfiles/pids/sidekiq.pid

Also, when do you run TERM?
https://github.com/mperham/sidekiq/wiki/Signals#term

Isn't convention to run the kill -USR1 as early as possible, like you have it, but run TERM & rm -rf sidekiq.pid on all the post hooks?