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EC2が勝手に再起動されたときに見るべきログ

More than 1 year has passed since last update.

AWSのEC2が勝手に再起動するときが時々ある。
メトリクスなどを見てもどうもこちらに問題があるようには思えない…
そういったとき見るべきログについて記載する。

勝手に起動されたときに見るべきログ

基板側に問題があると思われるので、その際は「CloudWatch」の「StatusCheckFailed_System」を見てみる。
再起動が発生した時間帯に、「StatusCheckFailed_System」が「1」になっていたら基板側に問題があったということ。

サーバーの監視をする際は、この項目も監視するようにしておいたほうがよさそう。
http://docs.aws.amazon.com/ja_jp/AWSEC2/latest/UserGuide/monitoring-system-instance-status-check.html#creating_status_check_alarms

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