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【小ネタ】OpenStack用のRancher OSイメージ

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Rancher OSはRancherが出している、Docker Hostingに特化した軽量ディストリビューションです。
各IaaS用のイメージはここで配布されていて、OpenStack用のQCOW2イメージもあるのですが、公式doc

When launching an instance using the image, you must enable Advanced Options -> Configuration Drive and in order to use a cloud-config file.

とあって、あまりHorizon使わない私はなんのこっちゃと思ったのですが、 nova boot --config-drive true が必須、って話でした。このオプション付けないとcloud-initを食ってくれないのでssh-keyが渡りません。
あとデフォルトのログインユーザはrancherです。
以上、ごく一部の人にしか役立たないネタでした。

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