{"id":62016,"date":"2025-04-29T14:42:14","date_gmt":"2025-04-29T06:42:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62016\/"},"modified":"2025-04-29T14:42:14","modified_gmt":"2025-04-29T06:42:14","slug":"linux%e5%92%8cdocker%ef%bc%9a%e5%a6%82%e4%bd%95%e8%bf%9b%e8%a1%8c%e5%ae%b9%e5%99%a8%e7%9a%84%e5%8a%a8%e6%80%81%e8%b0%83%e5%ba%a6%e5%92%8c%e8%b4%9f%e8%bd%bd%e5%9d%87%e8%a1%a1%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62016\/","title":{"rendered":"Linux\u548cDocker\uff1a\u5982\u4f55\u8fdb\u884c\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\uff1f"},"content":{"rendered":"

linux\u548cdocker\uff1a\u5982\u4f55\u8fdb\u884c\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\uff1f<\/p>\n

\u5f15\u8a00\uff1a
\u968f\u7740\u5bb9\u5668\u5316\u6280\u672f\u7684\u5e7f\u6cdb\u5e94\u7528\uff0c\u5982\u4f55\u8fdb\u884c\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u6210\u4e3a\u4e86\u4e00\u4e2a\u91cd\u8981\u7684\u95ee\u9898\u3002Linux\u64cd\u4f5c\u7cfb\u7edf\u548cDocker\u5bb9\u5668\u53ef\u4ee5\u63d0\u4f9b\u4e00\u4e9b\u89e3\u51b3\u65b9\u6848\u6765\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u6280\u672f\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n

\u4e00\u3001\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6
\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u6307\u7684\u662f\u6839\u636e\u5f53\u524d\u7cfb\u7edf\u8d1f\u8f7d\u60c5\u51b5\u81ea\u52a8\u5730\u5c06\u5bb9\u5668\u5206\u914d\u7ed9\u4e0d\u540c\u7684\u4e3b\u673a\u6765\u5b9e\u73b0\u9ad8\u6548\u7684\u8d44\u6e90\u5229\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u52a8\u6001\u8c03\u5ea6\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

#!\/bin\/bash\n\n# \u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u7684\u8d1f\u8f7d\u60c5\u51b5\nloadavg=$(cat \/proc\/loadavg | awk '{print $1}')\n\n# \u8bbe\u7f6e\u7cfb\u7edf\u8d1f\u8f7d\u7684\u9608\u503c\nload_threshold=1.5\n\n# \u5982\u679c\u5f53\u524d\u7cfb\u7edf\u8d1f\u8f7d\u8d85\u8fc7\u9608\u503c\uff0c\u5219\u5c06\u5bb9\u5668\u8fc1\u79fb\u81f3\u5176\u4ed6\u4e3b\u673a\nif [[ $(echo \"$loadavg &gt; $load_threshold\" | bc -l) -eq 1 ]]; then\n    # \u8fc1\u79fb\u5bb9\u5668\u7684\u903b\u8f91\n    echo \"The system load is too high. Migrating containers...\"\n    # ...\nelse\n    echo \"The system load is normal. No need to migrate containers.\"\nfi<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u8ff0\u793a\u4f8b\u4ee3\u7801\u4f7f\u7528\u4e86\/proc\/loadavg\u6587\u4ef6\u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u7684\u8d1f\u8f7d\u60c5\u51b5\uff0c\u5e76\u901a\u8fc7\u6bd4\u8f83\u8d1f\u8f7d\u548c\u9608\u503c\u6765\u5224\u65ad\u662f\u5426\u9700\u8981\u8fc1\u79fb\u5bb9\u5668\u3002<\/p>\n
\u4e8c\u3001\u5bb9\u5668\u7684\u8d1f\u8f7d\u5747\u8861
\u5bb9\u5668\u7684\u8d1f\u8f7d\u5747\u8861\u6307\u7684\u662f\u5c06\u8bf7\u6c42\u5747\u5300\u5730\u5206\u53d1\u7ed9\u4e0d\u540c\u7684\u5bb9\u5668\u5b9e\u4f8b\uff0c\u4ee5\u63d0\u9ad8\u6574\u4e2a\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u8d1f\u8f7d\u5747\u8861\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
from flask import Flask\nfrom flask import request\nfrom flask import redirect\nfrom random import choice\n\napp = Flask(__name__)\n\n# \u5b9a\u4e49\u5bb9\u5668\u6c60\ncontainer_pool = ['http:\/\/container1', 'http:\/\/container2', 'http:\/\/container3']\n\n@app.route('\/')\ndef load_balancer():\n    # \u968f\u673a\u9009\u62e9\u4e00\u4e2a\u5bb9\u5668\u5b9e\u4f8b\n    container = choice(container_pool)\n    # \u91cd\u5b9a\u5411\u8bf7\u6c42\u5230\u5bb9\u5668\u5b9e\u4f8b\n    return redirect(container, code=302)\n\nif __name__ == '__main__':\n    app.run(debug=True, host='0.0.0.0', port=80)<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u8ff0\u793a\u4f8b\u4ee3\u7801\u4f7f\u7528\u4e86Python\u7684Flask\u6846\u67b6\u6765\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u8d1f\u8f7d\u5747\u8861\u5668\u3002\u901a\u8fc7\u968f\u673a\u9009\u62e9\u5bb9\u5668\u6c60\u4e2d\u7684\u4e00\u4e2a\u5bb9\u5668\u5b9e\u4f8b\uff0c\u5e76\u5c06\u8bf7\u6c42\u91cd\u5b9a\u5411\u5230\u8be5\u5bb9\u5668\u5b9e\u4f8b\uff0c\u5b9e\u73b0\u4e86\u5bb9\u5668\u7684\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n
\u7ed3\u8bba\uff1a
\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u662f\u5b9e\u73b0\u9ad8\u6548\u8d44\u6e90\u5229\u7528\u548c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u7684\u91cd\u8981\u624b\u6bb5\u3002\u672c\u6587\u4ecb\u7ecd\u4e86Linux\u548cDocker\u4e2d\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u7684\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u6280\u672f\uff0c\u5e76\u63d0\u4f9b\u4e86\u76f8\u5173\u7684\u4ee3\u7801\u793a\u4f8b\u3002\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u5b9e\u9645\u9700\u6c42\u548c\u73af\u5883\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u7814\u7a76\u548c\u5e94\u7528\u3002<\/p>\n
\u53c2\u8003\u8d44\u6599\uff1a<\/p>\n
    \n
  1. https:\/\/docs.docker.com\/<\/li>\n
  2. https:\/\/linuxcontainers.org\/<\/li>\n<\/ol>\n
    \u4ee5\u4e0a\u5c31\u662fLinux\u548cDocker\uff1a\u5982\u4f55\u8fdb\u884c\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    linux\u548cdocker\uff1a\u5982\u4f55\u8fdb\u884c\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\uff1f \u5f15\u8a00\uff1a\u968f\u7740\u5bb9\u5668\u5316\u6280\u672f\u7684\u5e7f\u6cdb\u5e94\u7528\uff0c\u5982\u4f55\u8fdb\u884c\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u6210\u4e3a\u4e86\u4e00\u4e2a\u91cd\u8981\u7684\u95ee\u9898\u3002Linux\u64cd\u4f5c\u7cfb\u7edf\u548cDocker\u5bb9\u5668\u53ef\u4ee5\u63d0\u4f9b\u4e00\u4e9b\u89e3\u51b3\u65b9\u6848\u6765\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u6280\u672f\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d1f\u8f7d\u5747\u8861\u3002 \u4e00\u3001\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u6307\u7684\u662f\u6839\u636e\u5f53\u524d\u7cfb\u7edf\u8d1f\u8f7d\u60c5\u51b5\u81ea\u52a8\u5730\u5c06\u5bb9\u5668\u5206\u914d\u7ed9\u4e0d\u540c\u7684\u4e3b\u673a\u6765\u5b9e\u73b0\u9ad8\u6548\u7684\u8d44\u6e90\u5229\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u52a8\u6001\u8c03\u5ea6\u7684\u793a\u4f8b\u4ee3\u7801\uff1a #!\/bin\/bash # \u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u7684\u8d1f\u8f7d\u60c5\u51b5 loadavg=$(cat \/proc\/loadavg | awk ‘{print $1}’) # \u8bbe\u7f6e\u7cfb\u7edf\u8d1f\u8f7d\u7684\u9608\u503c load_threshold=1.5 # \u5982\u679c\u5f53\u524d\u7cfb\u7edf\u8d1f\u8f7d\u8d85\u8fc7\u9608\u503c\uff0c\u5219\u5c06\u5bb9\u5668\u8fc1\u79fb\u81f3\u5176\u4ed6\u4e3b\u673a if [[ $(echo “$loadavg &gt; $load_threshold” | bc -l) -eq 1 ]]; then # \u8fc1\u79fb\u5bb9\u5668\u7684\u903b\u8f91 echo “The system load is too high. Migrating containers…” # … else echo “The system load is normal. No need to migrate containers.” […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-62016","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=62016"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62016\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=62016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=62016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=62016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}