StorageGRID管理ノードのサービスを開始できない

環境

NetApp StorageGRID 11.x

問題

• 管理ノードでサービスを開始できません。
• NTP（ネットワークタイムプロトコル）がNTP サーバに接続できません。
  例：

2020-10-12 05:34:36 +0000 | ntp                       | failed to set time with sntp retrying in 15 seconds
2020-10-12 05:34:51 +0000 | ntp                       | attempting to lock to 10.46.252.19
2020-10-12 05:34:54 +0000 | ntp                       | sntp failed:
sntp 4.2.8p10@1.3728-o Sun Feb 25 21:22:25 UTC 2018 (1)
10.46.252.19 no UCST response after 2 seconds
2020-10-12 05:34:54 +0000 | ntp                       | attempting to lock to 10.46.252.32
2020-10-12 05:34:57 +0000 | ntp                       | sntp failed:
sntp 4.2.8p10@1.3728-o Sun Feb 25 21:22:25 UTC 2018 (1)
10.46.252.32 no UCST response after 2 seconds
2020-10-12 05:34:57 +0000 | ntp                       | attempting to lock to 10.42.101.101
2020-10-12 05:35:00 +0000 | ntp                       | sntp failed:
sntp 4.2.8p10@1.3728-o Sun Feb 25 21:22:25 UTC 2018 (1)
10.42.101.101 no UCST response after 2 seconds
2020-10-12 05:35:00 +0000 | ntp                       | attempting to lock to 10.40.15.101
2020-10-12 05:35:03 +0000 | ntp                       | sntp failed:
sntp 4.2.8p10@1.3728-o Sun Feb 25 21:22:25 UTC 2018 (1)
10.40.15.101 no UCST response after 2 seconds