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fluentdでMongoDBにログを入れたときに、timeキーがない場合の対処

Last updated at Posted at 2014-09-09

fluentdのMongoDBプラグインを用いて、ログをMongoDBに入れる際に、
MongoDBの中のJSONをみると以下のように"time"のキーがなかった。

以下はApacheのaccess_logの例だが


{"_id" : ObjectId("540eef3f0d094e535e000028"),"host" : "10.2.4.249", "user" : "-", "method" : "GET", "path" : "/elb_healthcheck.php", "code" : "404", "size" : "293", "referer" : "-", "agent" : "ELB-HealthChecker/1.0" }

御覧のように"time"のキーが存在しない。

この場合はtd-agent.confにinclude_time_key trueを書く必要がある。


<match td.*.*>
  type mongo_replset
  database log
  collection access_log
  nodes localhost:27020,localhost:27021,localhost:27022
  flush_interval 10s
  include_time_key true  # ←こいつが必要★
</match>

これだけのことですが、めっちゃハマりました。どこにも書いてないんだもん。ソース見てやっとわかりましたよ。。。

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