Systemd は RestartSec=15s を無視します。

私はこのサービスを持っています：

[Unit]
Description=TimeAgent Recorder
Requires=timeagent.service

[Service]
User=deployer
Group=sudo
WorkingDirectory=/home/deployer/timeagent
Environment=HOME=/home/deployer
Environment=RAILS_ENV=production
Environment=EYE_CLIENT_TIMEOUT=120
Restart=always
RestartSec=15
Nice=1

Type=forking
PIDFile=/home/deployer/.eye/pid
ExecStart=/usr/local/bin/bundle exec eye load recorder.eye
ExecStop=/usr/local/bin/bundle exec eye quit --stop-all -t 600

[Install]
WantedBy=timeagent.service

再起動後、時々起動できません。

$ systemctl status timeagent-recorder
● timeagent-recorder.service - TimeAgent Recorder
   Loaded: loaded (/etc/systemd/system/timeagent-recorder.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Mon 2017-03-20 16:30:17 GMT; 42min ago
  Process: 10929 ExecStop=/usr/local/bin/bundle exec eye quit --stop-all -t 600 (code=exited, status=0/SUCCESS)
  Process: 11409 ExecStart=/usr/local/bin/bundle exec eye load recorder.eye (code=killed, signal=TERM)
 Main PID: 9236 (code=killed, signal=TERM)

Mar 20 16:30:16 Ti systemd[1]: Starting TimeAgent Recorder...
Mar 20 16:30:17 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 20 16:30:17 Ti systemd[1]: timeagent-recorder.service: Start request repeated too quickly.
Mar 20 16:30:17 Ti systemd[1]: Failed to start TimeAgent Recorder.
Mar 20 16:30:20 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 20 16:30:20 Ti systemd[1]: timeagent-recorder.service: Start request repeated too quickly.
Mar 20 16:30:20 Ti systemd[1]: Failed to start TimeAgent Recorder.
Mar 20 16:30:20 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 20 16:30:20 Ti systemd[1]: timeagent-recorder.service: Start request repeated too quickly.
Mar 20 16:30:20 Ti systemd[1]: Failed to start TimeAgent Recorder.

関連出力も次のとおりです。

$ systemctl show timeagent-recorder | grep -i restart
Restart=always
RestartUSec=15s

上記のように、サービスとデーモンの再ロードを有効にしたことを確認しました。有効で systemd はサービスを開始しようとしますが、RestartSec を完全に無視します。

私はUbuntu 16.04.1 LTSを使用しており、システムバージョンは229-4ubuntu10です。

RestartSec = 15が尊重されない理由をご存知ですか？ - RestartSec = 15sを試してみましたが、違いはありませんでした。

編集する：

提案どおりに「必要」を「希望」に変更しましたが、問題は引き続き発生します。詳細を示す関連ログは次のとおりです。

# journalctl -f -u timeagent-recorder
Mar 26 20:18:21 Ti bundle[7030]: Config loaded!
Mar 26 20:18:21 Ti systemd[1]: Started TimeAgent Recorder.
Mar 26 22:17:06 Ti systemd[1]: Stopping TimeAgent Recorder...
Mar 26 22:17:08 Ti bundle[22989]: Eye quit ಠ╭╮ಠ (/home/deployer)
Mar 26 22:17:08 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 26 22:17:08 Ti systemd[1]: Starting TimeAgent Recorder...
Mar 26 22:17:09 Ti bundle[23272]: Eye started! ㋡ (/home/deployer)
Mar 26 22:17:09 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 26 22:17:09 Ti systemd[1]: Starting TimeAgent Recorder...
Mar 26 22:17:09 Ti systemd[1]: timeagent-recorder.service: Control process exited, code=exited status=1
Mar 26 22:17:09 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 26 22:17:09 Ti systemd[1]: timeagent-recorder.service: Unit entered failed state.
Mar 26 22:17:09 Ti systemd[1]: timeagent-recorder.service: Failed with result 'exit-code'.
Mar 26 22:17:09 Ti systemd[1]: Starting TimeAgent Recorder...
Mar 26 22:17:09 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 26 22:17:09 Ti systemd[1]: Starting TimeAgent Recorder...
Mar 26 22:17:10 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 26 22:17:10 Ti systemd[1]: Starting TimeAgent Recorder...
Mar 26 22:17:10 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 26 22:17:10 Ti systemd[1]: timeagent-recorder.service: Start request repeated too quickly.
Mar 26 22:17:10 Ti systemd[1]: Failed to start TimeAgent Recorder.
Mar 26 22:17:10 Ti systemd[1]: Stopped TimeAgent Recorder.
Mar 26 22:17:10 Ti systemd[1]: timeagent-recorder.service: Start request repeated too quickly.
Mar 26 22:17:10 Ti systemd[1]: Failed to start TimeAgent Recorder.