{"id":26823,"date":"2025-04-15T10:47:27","date_gmt":"2025-04-15T01:47:27","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=26823"},"modified":"2025-04-15T10:47:27","modified_gmt":"2025-04-15T01:47:27","slug":"rpi3%e3%81%ae%e4%b8%8d%e5%ae%89%e5%ae%9a%e6%80%a7-2","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=26823","title":{"rendered":"RPi3\u306e\u4e0d\u5b89\u5b9a\u6027 (2)"},"content":{"rendered":"\n

Raspberry Pi 3 Model Bと同B+ （以下それぞれRPi3, RPi3+）の不安定性について，RPi3のほうは新しく購入したSanDisk microSD 32GBに古いmicroSDカード（以下SDカード）の中身をコピーすることで安定化<\/a>しました．<\/p>\n\n\n\n

一方のRPi3+については新しいSDカードでも不安定性が変わらないからこれはハードウェアの寿命を一旦結論<\/a>としました．<\/p>\n\n\n\n

予備用にRaspberry Pi 4 Model B RAM4GB （RPi4）があり，これは鉄壁の安定性です．CPUやメモリーに余裕があるというのもあると思います．<\/p>\n\n\n

\n
\"\"
鉄壁の安定性を誇るRaspberry Pi 4 Model B RAM 4GB<\/figcaption><\/figure>\n<\/div>\n\n\n

試しにこのSDカードをRPi3+に差してみたところ，なんと安定動作します．<\/p>\n\n\n\n

これはどう考えたら良いんでしょう．RPi3+に使用してきたSDカードのハードでなく中身に壊れた（壊れかけた）ファイルがあると言うことでしょうか．<\/p>\n\n\n\n

クリーンインストールをしないでupgradeを続けるDebian的にはありそうな話しです．<\/p>\n\n\n\n

そこで，RPi4のSDカードをコピーしてRPi3+で使うことにしました．コピーの仕方はいろいろ流儀があるでしょう．重要なのは，\/etc\/hostname<\/code>, \/etc\/hosts<\/code>にあるコンピューター名の変更，　dpkg-reconfigure openssh-server<\/code>によるsshサーバーキーの作り直しくらいでしょう1<\/a><\/sup>コマンドの前に\/etc\/ssh内の*key*を削除する必要があります。<\/span>．<\/p>\n\n\n\n

それと念のため\/etc\/avahi\/avahi-daemon.conf<\/code>内でhost名を明示的に指定していないか確認します．<\/p>\n\n\n\n

しばらくの間，Avahiは名前がコンフリクトしていると言ってhost名-2.local等になりますので注意が必要です．<\/p>\n\n\n\n

まだ半日くらいしか経っていませんが，RPi3+は今のところ安定しています．<\/p>\n","protected":false},"excerpt":{"rendered":"

Raspberry Pi 3 Model B\u3068\u540cB+ \uff08\u4ee5\u4e0b\u305d\u308c\u305e\u308cRPi3, RPi3+\uff09\u306e\u4e0d\u5b89\u5b9a\u6027\u306b\u3064\u3044\u3066\uff0cRPi3\u306e\u307b\u3046\u306f\u65b0\u3057\u304f\u8cfc\u5165\u3057\u305fSanDisk microSD 32GB\u306b\u53e4\u3044microSD\u30ab\u30fc\u30c9\uff08\u4ee5\u4e0bSD\u30ab\u30fc\u30c9\uff09\u306e\u4e2d\u8eab\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3053\u3068\u3067\u5b89\u5b9a\u5316\u3057\u307e\u3057\u305f\uff0e \u4e00\u65b9\u306eRPi3+\u306b\u3064\u3044\u3066\u306f\u65b0\u3057\u3044SD\u30ab\u30fc\u30c9\u3067\u3082\u4e0d\u5b89\u5b9a\u6027\u304c\u5909\u308f\u3089\u306a\u3044\u304b\u3089\u3053\u308c\u306f\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u5bff\u547d\u3092\u4e00\u65e6\u7d50\u8ad6\u3068\u3057\u307e\u3057\u305f\uff0e \u4e88\u5099\u7528\u306bRaspberry Pi 4 Model B RAM4GB \uff08RPi4\uff09\u304c\u3042\u308a\uff0c\u3053\u308c\u306f\u9244\u58c1\u306e\u5b89\u5b9a\u6027\u3067\u3059\uff0eCPU\u3084\u30e1\u30e2\u30ea\u30fc\u306b\u4f59\u88d5\u304c\u3042\u308b\u3068\u3044\u3046\u306e\u3082\u3042\u308b\u3068\u601d\u3044\u307e\u3059\uff0e \u8a66\u3057\u306b\u3053\u306eSD\u30ab\u30fc\u30c9\u3092RPi3+\u306b\u5dee\u3057\u3066\u307f\u305f\u3068\u3053\u308d\uff0c\u306a\u3093\u3068\u5b89\u5b9a\u52d5\u4f5c\u3057\u307e\u3059\uff0e \u3053\u308c\u306f\u3069\u3046\u8003\u3048\u305f\u3089\u826f\u3044\u3093\u3067\u3057\u3087\u3046\uff0eRPi3+\u306b\u4f7f\u7528\u3057\u3066\u304d\u305fSD\u30ab\u30fc\u30c9\u306e\u30cf\u30fc\u30c9\u3067\u306a\u304f\u4e2d\u8eab\u306b\u58ca\u308c\u305f\uff08\u58ca\u308c\u304b\u3051\u305f\uff09\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u8a00\u3046\u3053\u3068\u3067\u3057\u3087\u3046\u304b\uff0e \u30af\u30ea\u30fc\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u3057\u306a\u3044\u3067upgrade\u3092\u7d9a\u3051\u308bDebian\u7684\u306b\u306f\u3042\u308a\u305d\u3046\u306a\u8a71\u3057\u3067\u3059\uff0e \u305d\u3053\u3067\uff0cRPi4\u306eSD\u30ab\u30fc\u30c9\u3092\u30b3\u30d4\u30fc\u3057\u3066RPi3+\u3067\u4f7f\u3046\u3053\u3068\u306b\u3057\u307e\u3057\u305f\uff0e\u30b3\u30d4\u30fc\u306e\u4ed5\u65b9\u306f\u3044\u308d\u3044\u308d\u6d41\u5100\u304c\u3042\u308b\u3067\u3057\u3087\u3046\uff0e\u91cd\u8981\u306a\u306e\u306f\uff0c\/etc\/hostname, \/etc\/hosts\u306b\u3042\u308b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u540d\u306e\u5909\u66f4\uff0c\u3000dpkg-reconfigure openssh-server\u306b\u3088\u308bssh\u30b5\u30fc\u30d0\u30fc\u30ad\u30fc\u306e\u4f5c\u308a\u76f4\u3057\u304f\u3089\u3044\u3067\u3057\u3087\u3046\uff0e \u305d\u308c\u3068\u5ff5\u306e\u305f\u3081\/etc\/avahi\/avahi-daemon.conf\u5185\u3067host\u540d\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3057\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u3057\u307e\u3059\uff0e \u3057\u3070\u3089\u304f\u306e\u9593\uff0cAvahi\u306f\u540d\u524d\u304c\u30b3\u30f3\u30d5\u30ea\u30af\u30c8\u3057\u3066\u3044\u308b\u3068\u8a00\u3063\u3066host\u540d-2.local\u7b49\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\uff0e \u307e\u3060\u534a\u65e5\u304f\u3089\u3044\u3057\u304b\u7d4c\u3063\u3066\u3044\u307e\u305b\u3093\u304c\uff0cRPi3+\u306f\u4eca\u306e\u3068\u3053\u308d\u5b89\u5b9a\u3057\u3066\u3044\u307e\u3059\uff0e<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_daextam_enable_autolinks":"1","footnotes":""},"categories":[27],"tags":[],"class_list":["post-26823","post","type-post","status-publish","format-standard","hentry","category-rasapberry-pi"],"publishpress_future_action":{"enabled":false,"date":"2026-05-17 08:46:38","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/26823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26823"}],"version-history":[{"count":0,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/26823\/revisions"}],"wp:attachment":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}