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CONTAP-352417:CONTAP-82775の修正後、EMSレポート毎日auditlog.change.detected(BURT 1524672)

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Category:
ontap-9
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core
Last Updated:
Invalid Date

問題

  • バグ 1524672の修正を含むバージョンにONTAPをアップグレードした後、 以前にローテーションされたaudit.log.xxx について、クラスタ内の1つのノードだけが00:05(現地時間)に毎日のauditlog.change.detected イベントを報告します。
    Mon Jun 17 00:05:00 +0900 [Node-01: mgwd: auditlog.change.detected:error]: Audit log file "audit.log.0000001562" was tampered with.
    Mon Jun 18 00:05:36 +0900 [Node-01: mgwd: auditlog.change.detected:error]: Audit log file "audit.log.0000001563" was tampered with.
    Mon Jun 19 00:05:44 +0900 [Node-01: mgwd: auditlog.change.detected:error]: Audit log file "audit.log.0000001564" was tampered with.
    ...


  • mgwd.log では、audit.log.xxx ファイルに対して次のエラーメッセージが表示されます。
    00000025.000bea70 01e5bc7a Fri Jul 26 2024 00:05:00 -04:00 [kern_mgwd:info:3205] 0x8318d7b00: 8603e9000000012a: ERR: tables::audit: Audit log signature file /mroot/etc/log/mlog/audit_log_sig/audit.log.0000001562.sig is empty.Hence, Signature verification failed for file: audit.log.0000001562. Line: 1398, Function: verify_hashes ...

  • イベントで言及されたaudit.log.xxx ファイルのファイルサイズがすべて350バイトを超えています。システムシェルを使用したディレクトリのリスト:
    % ls -lh /mroot/etc/log/mlog/audit.log*
    -rw-r--r--  2 root  wheel    70M Jun 18 10:03 /mroot/etc/log/mlog/audit.log
    -rw-r--r--  1 root  wheel    76M May  1 14:17 /mroot/etc/log/mlog/audit.log.0000001562
    -rw-r--r--  1 root  wheel    72M May  2 14:17 /mroot/etc/log/mlog/audit.log.0000001563
    -rw-r--r--  1 root  wheel    72M May  3 14:17 /mroot/etc/log/mlog/audit.log.0000001564

 

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