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mackerelのインストール後のEC2インスタンスのファイルシステム100%アラートの解消方法

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いつもどおり、EC2を立ち上げてmackerelをインストールしたら突然アラートが飛んで来てビビる。

キャプチャ.PNG

dfかけると使用量100%の謎のloopデバイスが...

キャプチャ.PNG

よくわからないけど、/dev/loopが邪魔な模様。

解決方法

以下ように設定しループデバイスを除外する

/etc/mackerel-agent/mackerel-agent.conf
[filesystem]
ignore = "/dev/loop.*"

sudo service mackerel-agent restartで再起動

参考

以下が参考になりました。ssm-agentが原因だったのですね。

【Mackerel】 snap のループデバイス /dev/loop の filesystem Usage 100% を 無視する
https://djeeeno.blogspot.com/2018/07/20180729-01-mackerel-snap.html

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