{"id":83883,"date":"2026-05-28T08:00:00","date_gmt":"2026-05-27T23:00:00","guid":{"rendered":"https:\/\/www.creationline.com\/tech-blog\/?p=83883"},"modified":"2026-05-27T18:15:24","modified_gmt":"2026-05-27T09:15:24","slug":"systemd%e3%81%ae%e3%82%b5%e3%83%b3%e3%83%89%e3%83%9c%e3%83%83%e3%82%af%e3%82%b9%e6%a9%9f%e8%83%bd%e3%82%92%e6%b4%bb%e7%94%a8%e3%81%97%e3%82%88%e3%81%86","status":"publish","type":"post","link":"https:\/\/www.creationline.com\/tech-blog\/agile-devops\/devops\/83883","title":{"rendered":"systemd\u306e\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u6a5f\u80fd\u3092\u6d3b\u7528\u3057\u3088\u3046"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p>\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u3068\u3044\u3048\u3070Docker\u3084containerd\u3001podman\u3092\u601d\u3044\u6d6e\u304b\u3079\u308b\u65b9\u304c\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u5b9f\u306fsystemd\u3067\u3082\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u3092\u4f5c\u3063\u3066\u304a\u3089\u305a\u3001\u76f4\u63a5\u30db\u30b9\u30c8\u4e0a\u3067\u52d5\u304b\u3057\u3066\u3044\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u3088\u308a\u30bb\u30ad\u30e5\u30a2\u306b\u52d5\u4f5c\u3055\u305b\u308b\u305f\u3081\u306b\u4f7f\u3048\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Docker\u4f7f\u3048\u3070\u826f\u304f\u306a\u3044?<\/h2>\n\n\n\n<p>Docker\u3092\u4f7f\u308f\u305a\u3001systemd\u3067\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u3092\u69cb\u6210\u3059\u308b\u3053\u3068\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Docker\u304c\u4e0d\u8981\u3002Docker\u81ea\u4f53\u304c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3042\u308a\u3001\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u30b7\u30b9\u30c6\u30e0\u306e\u8907\u96d1\u6027\u304c\u5897\u3059\u307b\u304b\u3001Docker\u304cattack surface (\u653b\u6483\u5bfe\u8c61) \u3068\u306a\u308a\u3048\u307e\u3059\u3002\n<ul class=\"wp-block-list\">\n<li>Docker\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3001\u30b3\u30f3\u30c6\u30ca\u30ec\u30b8\u30b9\u30c8\u30ea\u306e\u9078\u5b9a\u30fb\u8a2d\u5b9a\u3001\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u306e\u30d3\u30eb\u30c9\u304c\u4e0d\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">systemd\u306e\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u3067\u304d\u308b\u3053\u3068<\/h2>\n\n\n\n<p>systemd\u306e\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u3067\u304d\u308b\u3053\u3068\u306e\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u8aad\u307f\u66f8\u304d\u53ef\u80fd\u306a\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u5236\u9650\u3059\u308b\u3053\u3068<\/li>\n\n\n\n<li>\u5c02\u7528\u306e\u30c6\u30f3\u30dd\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb\u683c\u7d0d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u30de\u30a6\u30f3\u30c8\u3059\u308b\u3053\u3068<\/li>\n\n\n\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u540d\u524d\u7a7a\u9593\u3092\u9694\u96e2\u3059\u308b\u3053\u3068<\/li>\n\n\n\n<li>\u6a29\u9650\u6607\u683c\u3092\u5236\u9650\u3059\u308b\u3053\u3068<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a2d\u5b9a\u96c6<\/h2>\n\n\n\n<p>systemd \u30e6\u30cb\u30c3\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u95a2\u9023\u306e\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ProtectSystem<\/h3>\n\n\n\n<p>\u5f15\u6570\u3068\u3057\u3066\u30d6\u30fc\u30eb\u5024\u307e\u305f\u306f <code>full<\/code> \u307e\u305f\u306f <code>strict<\/code> \u3092\u3068\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>ProtectSystem=true<\/code>: <code>\/usr \/boot \/efi<\/code> \u3092\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3067\u30de\u30a6\u30f3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>ProtectSystem=full<\/code>: <code>\/usr \/boot \/efi \/etc<\/code> \u3092\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3067\u30de\u30a6\u30f3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>ProtectSystem=strict<\/code>: <code>\/dev \/proc \/sys<\/code>\u3092\u9664\u304f\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u3092\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3067\u30de\u30a6\u30f3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PrivateTmp<\/h3>\n\n\n\n<p>\u5f15\u6570\u3068\u3057\u3066\u30d6\u30fc\u30eb\u5024\u307e\u305f\u306f <code>disconnected<\/code> \u3092\u3068\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6709\u52b9\u306b\u3059\u308b\u3068\u3001<code>\/tmp \/var\/tmp<\/code>\u304c\u4ed6\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u5171\u6709\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3059 (\u4ed6\u306e\u30d7\u30ed\u30bb\u30b9\u304b\u3089\u898b\u3048\u306a\u304f\u306a\u308a\u307e\u3059)\u3002<code>disconnected<\/code> \u306b\u3059\u308b\u3068\u3001\u300c\u5b8c\u5168\u306b\u65b0\u3057\u3044tmpfs\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u300d\u304c\u4f7f\u308f\u308c\u308b\u3088\u3046\u3067\u3059\u3002\u3053\u3061\u3089\u306f\u307e\u3060\u8457\u8005\u3082\u3088\u304f\u7406\u89e3\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u300c\u4ed6\u306e\u30d7\u30ed\u30bb\u30b9\u306e\u30c6\u30f3\u30dd\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb\u3092\u3001\u8106\u5f31\u6027\u306b\u3088\u308a\u6f0f\u6d29\u3057\u3066\u3057\u307e\u3046\u300d\u3053\u3068\u3084\u3001\u300c\u4ed6\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u30c6\u30f3\u30dd\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb\u3092\u76d7\u307f\u898b\u3089\u308c\u3066\u3057\u307e\u3046\u300d\u3053\u3068\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PrivateNetwork<\/h3>\n\n\n\n<p>\u5f15\u6570\u3068\u3057\u3066\u30d6\u30fc\u30eb\u5024\u3092\u3068\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>PrivateNetwork=true<\/code>: \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u540d\u524d\u7a7a\u9593\u304c\u30db\u30b9\u30c8\u304b\u3089\u5206\u96e2\u3055\u308c\u307e\u3059\u3002\u5206\u96e2\u3055\u308c\u305f\u540d\u524d\u7a7a\u9593\u306b\u306f\u3001 <code>lo<\/code> \u30c7\u30d0\u30a4\u30b9\u306e\u307f\u304c\u5b58\u5728\u3059\u308b\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30af\u30bb\u30b9\u3092\u60f3\u5b9a\u3057\u3066\u3044\u306a\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u52d5\u4f5c\u3055\u305b\u308b\u3053\u3068\u306b\u9069\u3057\u305f\u8a2d\u5b9a\u3067\u3059\u3002\u300c\u5916\u90e8\u304b\u3089\u4e0d\u6b63\u306a\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3057\u3066\u51e6\u7406\u3057\u3066\u3057\u307e\u3046\u300d\u3053\u3068\u3084\u300c\u5916\u90e8\u306b\u610f\u56f3\u3057\u306a\u3044\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3057\u3066\u3057\u307e\u3046\u300d\u3053\u3068\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NoNewPrivileges<\/h3>\n\n\n\n<p>\u5f15\u6570\u3068\u3057\u3066\u30d6\u30fc\u30eb\u5024\u3092\u3068\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>NoNewPrivileges=true<\/code>: \u30d7\u30ed\u30bb\u30b9\u3068\u305d\u306e\u5b50\u5b6b\u304c\u65b0\u305f\u306a\u7279\u6a29\u3092\u7372\u5f97\u3059\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002setuid\u30d3\u30c3\u30c8\u3084setgid\u30d3\u30c3\u30c8\u306b\u3088\u308b\u7279\u6a29\u7372\u5f97\u3001\u304a\u3088\u3073\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30b1\u30a4\u30d1\u30d3\u30ea\u30c6\u30a3\u306b\u3088\u308b\u7279\u6a29\u7372\u5f97\u3092\u542b\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a2d\u5b9a\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u304c\u3059\u3067\u306b\u6301\u3063\u3066\u3044\u308b\u7279\u6a29\u3092\u5265\u596a\u3059\u308b\u3053\u3068\u306f\u306a\u3044\u306e\u3067\u3001\u6700\u5c0f\u9650\u306e\u7279\u6a29\u3092\u6301\u3063\u305f\u72b6\u614b\u3067\u30d7\u30ed\u30bb\u30b9\u3092\u8d77\u52d5\u3057\u306a\u3051\u308c\u3070\u3046\u307e\u304f\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u305b\u3093\u3002\u975eroot\u30e6\u30fc\u30b6\u30fc\u3067\u8d77\u52d5\u3057\u305f\u30d7\u30ed\u30bb\u30b9\u304croot\u6a29\u9650\u3092\u7372\u5f97\u3059\u308b\u3053\u3068\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">service\u30d5\u30a1\u30a4\u30eb\u4f8b<\/h2>\n\n\n\n<p>\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u305f <code>example.service<\/code> \u30d5\u30a1\u30a4\u30eb\u306e\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">[Unit]\nDescription=Example daemon with hardening options\nAfter=network.target\n\n[Service]\nType=simple\nUser=nobody\nGroup=nogroup\nExecStart=\/usr\/bin\/example-daemon --option\nRestart=on-failure\n\n# Hardening \/ sandboxing options\nProtectSystem=full        # \/usr \u306f\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3001\/etc \u306f\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3002\u4e00\u90e8\u66f8\u304d\u8fbc\u307f\u306f \/var \u306b\u9650\u5b9a\nPrivateTmp=true           # \/tmp \u3068 \/var\/tmp \u3092\u540d\u524d\u7a7a\u9593\u3067\u5206\u96e2\nPrivateNetwork=true       # \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u540d\u524d\u7a7a\u9593\u3067\u5206\u96e2 (\u30eb\u30fc\u30d7\u30d0\u30c3\u30af\u306e\u307f)\nNoNewPrivileges=true      # \u30bb\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\/\u30b0\u30eb\u30fc\u30d7\u3084 execve \u3067\u6a29\u9650\u6607\u683c\u3092\u7981\u6b62\n\n# \u8ffd\u52a0\u306e\u5805\u7262\u5316 (\u4efb\u610f)\nProtectHome=true          # \/home\u3001\/root\u3001\/run\/user \u3092\u30a2\u30af\u30bb\u30b9\u4e0d\u53ef\u306b\u3059\u308b\nProtectKernelTunables=true\nProtectKernelModules=true\nProtectControlGroups=true\nPrivateDevices=true\nRestrictAddressFamilies=AF_INET AF_INET6 unix\n\n[Install]\nWantedBy=multi-user.target<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d42\u308f\u308a\u306b<\/h2>\n\n\n\n<p>systemd\u306f\u5c0e\u5165\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u306edocker\u306f\u5c0e\u5165\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3084\u3001docker\u3092\u4f7f\u3046\u305f\u3081\u306e\u6e96\u5099 (\u30a4\u30e1\u30fc\u30b8\u306e\u30d3\u30eb\u30c9\u3084Container Registry\u306e\u7528\u610f\u306a\u3069) \u304c\u56f0\u96e3\u306a\u5834\u5408\u306a\u3069\u306b\u672c\u8a18\u4e8b\u304c\u5f79\u306b\u7acb\u3064\u3053\u3068\u3092\u9858\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b 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