> docker exec front df -i Filesystem Inodes IUsed IFree IUse% Mounted on overlay 3907584 3907459 125 100% / # skip osxfs 9223372036854775807 3103606 9223372036851672201 1% /root/dev /dev/sda1 3907584 3907459 125 100% /etc/hosts # skip
![no space left on deviceエラーの対応 - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/3381c546a8f6f9e81138cd5dcf71ab9dfdb5e3b4/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9bm8lMjBzcGFjZSUyMGxlZnQlMjBvbiUyMGRldmljZSVFMyU4MiVBOCVFMyU4MyVBOSVFMyU4MyVCQyVFMyU4MSVBRSVFNSVBRiVCRSVFNSVCRiU5QyZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTU2JnM9Njk1N2NiM2I4NGI2MjU5MWIzODRiYWI2OWQxMjg4Zjc%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBzYWt5bWFyayZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTM2JnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnM9ZTFjMGQ4NWI5NDUwYzY1NWIxZjBiMDA4ZWRhMzY4OTU%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3Dde078eca87d821c6a4f7aca92247d47a)
自分用メモ。Net::DNS(net-dns) irb(main):001:0> require 'rubygems' => true irb(main):002:0> require 'net/dns/resolver' => true irb(main):003:0> require 'pp' => true # 8.8.8.8(google public dns)を使って名前解決を行うインスタンスを生成 irb(main):004:0> res = Net::DNS::Resolver.new(:nameservers => "8.8.8.8") => ;; RESOLVER state: ;; retry_interval: 5 searchlist: [] ;; ignore_truncated: false domain: "" ;; retry_number: 4 names
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