rngd: too many FIPS failures, disabling entropy source

Solution Verified - Updated -

Issue

  • 乱数生成の tpm モジュールを使用していますが、rngd がしばしば停止します。
  • rngd が失敗しエラーが表示されます。
Sep 4 19:37:20 host2 rngd: failed fips test  
Sep 5 08:35:36 host2 rngd: failed fips test  
Sep 5 17:01:37 host2 rngd: failed fips test  
Sep 6 17:00:45 host2 rngd: failed fips test  
Sep 6 17:00:45 host2 rngd: too many FIPS failures, disabling entropy source  
Sep 6 17:00:45 host2 rngd:No entropy sources working, exiting rngd
rngd dead but subsys locked

Environment

  • Red Hat Enterprise Linux 5
    • rng-utils-2.0-5.el5 未満のバージョン
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
    • rng-tools

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