{"id":1138,"date":"2026-08-13T03:59:23","date_gmt":"2026-08-12T19:59:23","guid":{"rendered":"https:\/\/byy3.com\/?p=1138"},"modified":"2026-08-13T03:59:23","modified_gmt":"2026-08-12T19:59:23","slug":"python-%e8%87%aa%e5%8a%a8%e5%8c%96%e8%bf%90%e7%bb%b4%e5%85%a5%e9%97%a8%ef%bc%9a%e5%81%a5%e5%ba%b7%e6%a3%80%e6%9f%a5%e3%80%81%e6%97%a5%e5%bf%97%e5%88%86%e6%9e%90%e4%b8%8e%e5%ae%89%e5%85%a8%e5%91%8a","status":"publish","type":"post","link":"https:\/\/byy3.com\/?p=1138","title":{"rendered":"Python \u81ea\u52a8\u5316\u8fd0\u7ef4\u5165\u95e8\uff1a\u5065\u5eb7\u68c0\u67e5\u3001\u65e5\u5fd7\u5206\u6790\u4e0e\u5b89\u5168\u544a\u8b66"},"content":{"rendered":"<p>\u670d\u52a1\u5668\u65e5\u5e38\u7ef4\u62a4\u91cc\uff0c\u771f\u6b63\u9002\u5408\u81ea\u52a8\u5316\u7684\u4e0d\u662f\u201c\u81ea\u52a8\u6267\u884c\u6240\u6709\u547d\u4ee4\u201d\uff0c\u800c\u662f\u628a\u91cd\u590d\u3001\u53ef\u9a8c\u8bc1\u3001\u4f4e\u98ce\u9669\u7684\u68c0\u67e5\u56fa\u5b9a\u4e0b\u6765\uff1a\u91c7\u96c6\u78c1\u76d8\u4e0e\u5185\u5b58\u72b6\u6001\u3001\u786e\u8ba4\u5173\u952e\u670d\u52a1\u5728\u7ebf\u3001\u4ece\u65e5\u5fd7\u4e2d\u627e\u51fa\u5f02\u5e38\uff0c\u518d\u5c06\u7ed3\u679c\u63a8\u9001\u5230\u4e00\u4e2a\u53ef\u8ffd\u8e2a\u7684\u4f4d\u7f6e\u3002Python \u5f88\u9002\u5408\u628a\u8fd9\u4e9b\u6b65\u9aa4\u7ec4\u7ec7\u6210\u5c0f\u800c\u6e05\u6670\u7684\u8fd0\u7ef4\u811a\u672c\u3002<\/p>\n<h2>\u81ea\u52a8\u5316\u524d\u5148\u5b9a\u4e49\u8fb9\u754c<\/h2>\n<p>\u7b2c\u4e00\u7248\u811a\u672c\u53ea\u505a<strong>\u8bfb\u53d6\u3001\u8bb0\u5f55\u4e0e\u544a\u8b66<\/strong>\uff0c\u4e0d\u8981\u81ea\u52a8\u91cd\u542f\u670d\u52a1\u3001\u5220\u9664\u6587\u4ef6\u6216\u4fee\u6539\u9632\u706b\u5899\u3002\u8fd9\u6837\u5373\u4f7f\u5224\u65ad\u9608\u503c\u8bbe\u7f6e\u4e0d\u5408\u7406\uff0c\u4e5f\u4e0d\u4f1a\u76f4\u63a5\u5f71\u54cd\u7f51\u7ad9\u3002\u6bcf\u4e00\u9879\u68c0\u67e5\u90fd\u5e94\u5199\u660e\uff1a\u68c0\u67e5\u4ec0\u4e48\u3001\u4ec0\u4e48\u503c\u9700\u8981\u544a\u8b66\u3001\u544a\u8b66\u540e\u7531\u8c01\u5904\u7406\u3002<\/p>\n<ul>\n<li>\u7cfb\u7edf\u8d44\u6e90\uff1a\u78c1\u76d8\u53ef\u7528\u7a7a\u95f4\u3001\u5185\u5b58\u3001\u8d1f\u8f7d\u548c swap\u3002<\/li>\n<li>\u670d\u52a1\u72b6\u6001\uff1aWeb \u670d\u52a1\u3001PHP-FPM\u3001\u6570\u636e\u5e93\u548c\u5907\u4efd\u4efb\u52a1\u662f\u5426\u6b63\u5e38\u3002<\/li>\n<li>\u5e94\u7528\u4fe1\u53f7\uff1a\u9996\u9875\u54cd\u5e94\u7801\u3001\u5173\u952e\u9875\u9762\u54cd\u5e94\u65f6\u95f4\u3001\u9519\u8bef\u65e5\u5fd7\u4e2d\u7684\u65b0\u589e\u5f02\u5e38\u3002<\/li>\n<li>\u6267\u884c\u8bb0\u5f55\uff1a\u6bcf\u6b21\u68c0\u67e5\u7684\u65f6\u95f4\u3001\u7ed3\u679c\u548c\u5931\u8d25\u539f\u56e0\u3002<\/li>\n<\/ul>\n<h2>\u4e00\u4e2a\u6700\u5c0f\u53ef\u7528\u7684\u5065\u5eb7\u68c0\u67e5\u811a\u672c<\/h2>\n<p>\u4e0b\u9762\u7684\u793a\u4f8b\u4f7f\u7528\u6807\u51c6\u5e93\u4e0e <code>shutil<\/code>\uff0c\u68c0\u67e5\u78c1\u76d8\u3001\u5185\u5b58\u548c\u9996\u9875 HTTP \u72b6\u6001\u3002\u5c06\u57df\u540d\u548c\u9608\u503c\u66ff\u6362\u6210\u81ea\u5df1\u7684\u73af\u5883\uff1b\u751f\u4ea7\u73af\u5883\u5efa\u8bae\u653e\u8fdb\u4e13\u95e8\u7684\u865a\u62df\u73af\u5883\u5e76\u7531\u5b9a\u65f6\u4efb\u52a1\u89e6\u53d1\u3002<\/p>\n<pre><code>from datetime import datetime\r\nfrom pathlib import Path\r\nimport shutil\r\nimport urllib.request\r\n\r\nURL = \"https:\/\/example.com\/\"\r\nDISK_FREE_MIN = 15 # percent\r\n\r\ndef disk_free_percent(path=\"\/\"):\r\n usage = shutil.disk_usage(path)\r\n return usage.free \/ usage.total * 100\r\n\r\ndef check_homepage():\r\n request = urllib.request.Request(URL, method=\"HEAD\")\r\n with urllib.request.urlopen(request, timeout=10) as response:\r\n return response.status\r\n\r\ndef main():\r\n checks = []\r\n free = disk_free_percent(\"\/\")\r\n checks.append(f\"disk_free={free:.1f}%\")\r\n if free &lt; DISK_FREE_MIN:\r\n checks.append(\"ALERT: disk space is low\")\r\n\r\n try:\r\n status = check_homepage()\r\n checks.append(f\"homepage_status={status}\")\r\n if status &gt;= 400:\r\n checks.append(\"ALERT: homepage returned an error\")\r\n except Exception as error:\r\n checks.append(f\"ALERT: homepage check failed: {error}\")\r\n\r\n log = Path(\"\/var\/log\/site-health.log\")\r\n log.parent.mkdir(parents=True, exist_ok=True)\r\n log.write_text(\r\n f\"{datetime.now().isoformat()} {' | '.join(checks)}\r\n\",\r\n encoding=\"utf-8\",\r\n )\r\n\r\nif __name__ == \"__main__\":\r\n main()<\/code><\/pre>\n<p>\u793a\u4f8b\u91cc\u7684\u65e5\u5fd7\u8def\u5f84\u9700\u8981\u6709\u5199\u5165\u6743\u9650\u3002\u82e5\u811a\u672c\u4ee5\u666e\u901a\u7528\u6237\u8fd0\u884c\uff0c\u5e94\u4f7f\u7528\u8be5\u7528\u6237\u53ef\u5199\u7684\u65e5\u5fd7\u76ee\u5f55\uff0c\u800c\u4e0d\u8981\u4e3a\u4e86\u7701\u4e8b\u4f7f\u7528 root\u3002<\/p>\n<h2>\u7528 subprocess \u68c0\u67e5\u670d\u52a1\uff0c\u4f46\u4e0d\u8981\u62fc\u63a5\u4e0d\u53ef\u4fe1\u8f93\u5165<\/h2>\n<p>Python \u53ef\u4ee5\u8c03\u7528\u7cfb\u7edf\u547d\u4ee4\uff0c\u4e0d\u8fc7\u5e94\u56fa\u5b9a\u547d\u4ee4\u53c2\u6570\uff0c\u4f7f\u7528\u53c2\u6570\u5217\u8868\u5e76\u8bbe\u7f6e\u8d85\u65f6\uff0c\u907f\u514d\u628a\u6765\u81ea\u8868\u5355\u3001URL \u6216\u65e5\u5fd7\u5185\u5bb9\u76f4\u63a5\u62fc\u8fdb shell \u547d\u4ee4\u3002<\/p>\n<pre><code>import subprocess\r\n\r\nresult = subprocess.run(\r\n [\"systemctl\", \"is-active\", \"nginx\"],\r\n capture_output=True,\r\n text=True,\r\n timeout=10,\r\n check=False,\r\n)\r\n\r\nif result.stdout.strip() != \"active\":\r\n print(\"ALERT: nginx is not active\")<\/code><\/pre>\n<p>\u5bf9\u4e8e\u9700\u8981\u7ba1\u7406\u5458\u6743\u9650\u7684\u64cd\u4f5c\uff0c\u5efa\u8bae\u5c06\u81ea\u52a8\u5316\u8d26\u6237\u9650\u5236\u4e3a\u6700\u5c11\u6743\u9650\uff0c\u5e76\u628a\u53ef\u6267\u884c\u547d\u4ee4\u5199\u5165\u660e\u786e\u7684\u767d\u540d\u5355\u3002\u4e0d\u8981\u628a\u670d\u52a1\u5668\u5bc6\u7801\u3001\u6570\u636e\u5e93\u5bc6\u7801\u3001API \u5bc6\u94a5\u6216 Webhook \u5730\u5740\u76f4\u63a5\u5199\u8fdb\u811a\u672c\u3002<\/p>\n<h2>\u65e5\u5fd7\u5206\u6790\uff1a\u4ece\u201c\u5f88\u591a\u884c\u6587\u672c\u201d\u53d8\u6210\u53ef\u884c\u52a8\u4fe1\u53f7<\/h2>\n<p>\u65e5\u5fd7\u811a\u672c\u65e0\u9700\u4e00\u5f00\u59cb\u5c31\u505a\u590d\u6742\u7684\u673a\u5668\u5b66\u4e60\u3002\u5148\u7edf\u8ba1\u6700\u8fd1\u4e00\u6bb5\u65f6\u95f4\u5185\u7684 5xx\u3001\u767b\u5f55\u5931\u8d25\u3001\u91cd\u590d\u8bbf\u95ee\u8def\u5f84\u4e0e\u5173\u952e\u9519\u8bef\u5173\u952e\u5b57\uff0c\u5df2\u7ecf\u80fd\u8986\u76d6\u8bb8\u591a\u771f\u5b9e\u6545\u969c\u3002\u8981\u6ce8\u610f\u65e5\u5fd7\u8f6e\u8f6c\uff1a\u811a\u672c\u8bfb\u53d6\u7684\u662f\u5f53\u524d\u65e5\u5fd7\u8fd8\u662f\u5f52\u6863\u65e5\u5fd7\uff0c\u5e94\u6709\u660e\u786e\u7b56\u7565\u3002<\/p>\n<pre><code>from collections import Counter\r\nfrom pathlib import Path\r\n\r\nerrors = Counter()\r\nfor line in Path(\"\/var\/log\/nginx\/error.log\").read_text(\r\n encoding=\"utf-8\", errors=\"ignore\"\r\n).splitlines()[-500:]:\r\n if \"error\" in line.lower():\r\n errors[\"nginx_error\"] += 1\r\n\r\nif errors[\"nginx_error\"]:\r\n print(f\"Recent nginx errors: {errors['nginx_error']}\")<\/code><\/pre>\n<h2>\u544a\u8b66\u8981\u5c11\u800c\u6709\u6548<\/h2>\n<p>\u544a\u8b66\u6e20\u9053\u53ef\u4ee5\u662f\u90ae\u4ef6\u3001\u4f01\u4e1a\u6d88\u606f\u6216\u76d1\u63a7\u5e73\u53f0\uff0c\u4f46\u89e6\u53d1\u89c4\u5219\u5e94\u907f\u514d\u201c\u6bcf\u5206\u949f\u53d1\u4e00\u6761\u201d\u3002\u5e38\u89c1\u505a\u6cd5\u662f\u8bbe\u5b9a\u51b7\u5374\u65f6\u95f4\uff1a\u540c\u4e00\u95ee\u9898\u5728 30 \u5206\u949f\u5185\u53ea\u901a\u77e5\u4e00\u6b21\uff0c\u6062\u590d\u6b63\u5e38\u65f6\u518d\u53d1\u9001\u4e00\u6761\u6062\u590d\u901a\u77e5\u3002\u5bf9\u4e8e\u6838\u5fc3\u9875\u9762\uff0c\u6700\u597d\u4ece\u7ad9\u5916\u518d\u505a\u4e00\u6b21\u68c0\u67e5\uff0c\u907f\u514d\u53ea\u4f9d\u8d56\u670d\u52a1\u5668\u81ea\u8eab\u5224\u65ad\u3002<\/p>\n<h2>\u5efa\u8bae\u7684\u6267\u884c\u65b9\u5f0f<\/h2>\n<ol>\n<li>\u5148\u624b\u5de5\u8fd0\u884c\u811a\u672c\uff0c\u786e\u8ba4\u8f93\u51fa\u3001\u6743\u9650\u548c\u8d85\u65f6\u884c\u4e3a\u3002<\/li>\n<li>\u5c06\u811a\u672c\u653e\u5728\u7248\u672c\u63a7\u5236\u4e2d\uff0c\u914d\u7f6e\u6587\u4ef6\u4e0e\u5bc6\u94a5\u5206\u79bb\u4fdd\u5b58\u3002<\/li>\n<li>\u901a\u8fc7 cron \u6216 systemd timer \u5b9a\u65f6\u8fd0\u884c\uff0c\u5e76\u628a\u6807\u51c6\u8f93\u51fa\u4e0e\u9519\u8bef\u8f93\u51fa\u5199\u5165\u72ec\u7acb\u65e5\u5fd7\u3002<\/li>\n<li>\u6bcf\u6b21\u6539\u52a8\u53ea\u589e\u52a0\u4e00\u4e2a\u68c0\u67e5\u9879\uff0c\u89c2\u5bdf\u4e00\u5468\u540e\u518d\u6269\u5927\u8303\u56f4\u3002<\/li>\n<li>\u4fdd\u7559\u4eba\u5de5\u5904\u7406\u6d41\u7a0b\uff1a\u81ea\u52a8\u5316\u8d1f\u8d23\u53d1\u73b0\u4e0e\u8bb0\u5f55\uff0c\u4eba\u8d1f\u8d23\u5224\u65ad\u548c\u4fee\u590d\u3002<\/li>\n<\/ol>\n<h2>\u7ed3\u8bed<\/h2>\n<p>\u597d\u7684\u8fd0\u7ef4\u81ea\u52a8\u5316\u4f1a\u8ba9\u95ee\u9898\u66f4\u65e9\u88ab\u53d1\u73b0\u3001\u5904\u7406\u8fc7\u7a0b\u66f4\u53ef\u8ffd\u6eaf\uff0c\u800c\u4e0d\u662f\u628a\u9ad8\u98ce\u9669\u64cd\u4f5c\u4ea4\u7ed9\u4e00\u4e2a\u65e0\u4eba\u503c\u5b88\u7684\u811a\u672c\u3002\u5148\u4ece\u5065\u5eb7\u68c0\u67e5\u548c\u65e5\u5fd7\u544a\u8b66\u5f00\u59cb\uff0c\u518d\u9010\u6b65\u6269\u5c55\u5230\u5907\u4efd\u9a8c\u8bc1\u3001\u8bc1\u4e66\u5230\u671f\u63d0\u9192\u548c\u6027\u80fd\u8d8b\u52bf\u5206\u6790\u3002<\/p>\n<p>\u7ad9\u5185\u5ef6\u4f38\u9605\u8bfb\uff1a<a href=\"\/category\/python\/\" rel=\"nofollow\" >Python \u6559\u7a0b<\/a>\u3001<a href=\"\/category\/linux\/\" rel=\"nofollow\" >Linux \u670d\u52a1\u5668\u6392\u9519<\/a>\u3001<a href=\"\/category\/wordpress\/\" rel=\"nofollow\" >WordPress \u8fd0\u7ef4<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u670d\u52a1\u5668\u65e5\u5e38\u7ef4\u62a4\u91cc\uff0c\u771f\u6b63\u9002\u5408\u81ea\u52a8\u5316\u7684\u4e0d\u662f\u201c\u81ea\u52a8\u6267\u884c\u6240\u6709\u547d\u4ee4\u201d\uff0c\u800c\u662f\u628a\u91cd\u590d\u3001\u53ef\u9a8c\u8bc1\u3001\u4f4e\u98ce\u9669\u7684\u68c0\u67e5\u56fa\u5b9a\u4e0b\u6765\uff1a\u91c7\u96c6\u78c1\u76d8 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[33,632,760,762,761],"class_list":["post-1138","post","type-post","status-publish","format-standard","hentry","category-python","tag-python","tag-762","tag-761"],"_links":{"self":[{"href":"https:\/\/byy3.com\/index.php?rest_route=\/wp\/v2\/posts\/1138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/byy3.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/byy3.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/byy3.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/byy3.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1138"}],"version-history":[{"count":0,"href":"https:\/\/byy3.com\/index.php?rest_route=\/wp\/v2\/posts\/1138\/revisions"}],"wp:attachment":[{"href":"https:\/\/byy3.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/byy3.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/byy3.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}