StorageGRID の拡張が「グリッドの設定中にエラーが発生しました。失敗しました 更新 "

環境

• StorageGRID
• 拡張ノード

問題

• グリッドの拡張がで失敗する 

Error while generating the grid configuration. Failed to update ["/root/.ssh/authorized_keys", "/etc/ntp.conf""] on the following grid nodes 

GUI の例： 

•   gdu-server /var/local/log ディレクトリの下にログインします

  E, [2021-03-03T13:52:50.627053 #8446] ERROR -- gdu-server: Bycast::Tasks::GduServer::UpdateNodesConfig: 
Failed to update some grid nodes: <storagenodename>
E, [2021-03-03T13:52:50.627491 #8446] ERROR -- gdu-server: Failure occurred during Expand
E, [2021-03-03T13:52:50.627556 #8446] ERROR -- gdu-server: #<Bycast::Tasks::GduServer::UpdateNodesConfig::LocalizedError: key: "nodes_config.update_failed", options: {:configs=>["/root/.ssh/authorized_keys", "/etc/ntp.conf"], :failed_nodes=>["<storagenodename>"]} >

  E, [2021-03-03T13:52:50.627579 #8446] ERROR -- gdu-server: /usr/local/lib/site_ruby/bycast/tasks/gdu-server/update-nodes-config.rb:67:in `call'