{"id":32326,"date":"2026-07-31T10:00:00","date_gmt":"2026-07-31T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32326"},"modified":"2026-08-04T10:26:52","modified_gmt":"2026-08-04T02:26:52","slug":"cloud-init-server-ssh","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/cloud-init-server-ssh\/","title":{"rendered":"cloud-init \u6279\u91cf\u521d\u59cb\u5316\u4e91\u670d\u52a1\u5668\uff1a\u7edf\u4e00\u7528\u6237\u3001SSH \u4e0e\u57fa\u7840\u5b89\u5168\u914d\u7f6e"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/cloud-init-server-ssh-cover.webp\" alt=\"cloud-init \u6279\u91cf\u521d\u59cb\u5316\u4e91\u670d\u52a1\u5668\u7684\u7edf\u4e00\u914d\u7f6e\u5c01\u9762\" loading=\"lazy\" \/><\/p>\n<p>cloud-init \u6279\u91cf\u521d\u59cb\u5316\u4e91\u670d\u52a1\u5668\uff0c\u89e3\u51b3\u7684\u662f\u201c\u6bcf\u53f0\u670d\u52a1\u5668\u90fd\u9760\u4eba\u5de5\u767b\u5f55\u914d\u7f6e\uff0c\u6700\u540e\u73af\u5883\u4e0d\u4e00\u81f4\u201d\u7684\u95ee\u9898\u3002\u672c\u6587\u4f1a\u6559\u4f60\u5982\u4f55\u628a\u7528\u6237\u3001SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u3001\u8f6f\u4ef6\u6e90\u3001\u57fa\u7840\u5b89\u5168\u7b56\u7565\u548c\u9a8c\u8bc1\u547d\u4ee4\u5199\u6210\u4e00\u4efd\u53ef\u590d\u7528\u7684\u521d\u59cb\u5316\u914d\u7f6e\uff0c\u8ba9\u65b0\u673a\u5668\u9996\u6b21\u542f\u52a8\u65f6\u81ea\u52a8\u5b8c\u6210\u6807\u51c6\u5316\u8bbe\u7f6e\u3002\u5bf9\u9700\u8981\u9891\u7e41\u521b\u5efa\u6d4b\u8bd5\u73af\u5883\u3001\u4e1a\u52a1\u8282\u70b9\u6216\u5ba2\u6237\u9879\u76ee\u9694\u79bb\u73af\u5883\u7684\u56e2\u961f\u6765\u8bf4\uff0c\u8fd9\u6bd4\u590d\u5236\u547d\u4ee4\u5230\u7ec8\u7aef\u66f4\u7a33\u5b9a\uff0c\u4e5f\u66f4\u5bb9\u6613\u5ba1\u8ba1\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5df2\u7ecf\u5728\u4f7f\u7528 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u4e3b\u673a<\/a>\u3001\u4e91\u670d\u52a1\u5668\uff08\u6309\u9700\u5206\u914d\u8d44\u6e90\u7684\u670d\u52a1\u5668\uff09\u6216\u591a\u53f0 Linux \u5b9e\u4f8b\uff0c\u6700\u5bb9\u6613\u9047\u5230\u7684\u4e0d\u662f\u67d0\u6761\u547d\u4ee4\u4e0d\u4f1a\u6267\u884c\uff0c\u800c\u662f\u7b2c 3 \u53f0\u3001\u7b2c 8 \u53f0\u3001\u7b2c 20 \u53f0\u673a\u5668\u914d\u7f6e\u7ec6\u8282\u5f00\u59cb\u504f\u79bb\u3002\u6709\u4eba\u5fd8\u4e86\u5173\u5bc6\u7801\u767b\u5f55\uff0c\u6709\u4eba\u6f0f\u88c5\u4e86 fail2ban\uff0c\u8fd8\u6709\u673a\u5668\u7684\u9ed8\u8ba4\u7528\u6237\u3001\u65f6\u533a\u548c SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u7aef\u53e3\u4e0d\u540c\u3002cloud-init \u7684\u4ef7\u503c\uff0c\u5c31\u662f\u628a\u8fd9\u4e9b\u201c\u5f00\u673a\u540e\u5fc5\u505a\u9879\u201d\u63d0\u524d\u5199\u8fdb\u58f0\u660e\u5f0f\u914d\u7f6e\uff0c\u51cf\u5c11\u4eba\u5de5\u6b65\u9aa4\u5e26\u6765\u7684\u968f\u673a\u6027\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u8981\u628a\u521d\u59cb\u5316\u914d\u7f6e\u524d\u79fb\u5230\u9996\u6b21\u542f\u52a8<\/h2>\n<p>\u4f20\u7edf\u505a\u6cd5\u901a\u5e38\u662f\u5148\u521b\u5efa\u670d\u52a1\u5668\uff0c\u518d\u7528 SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u767b\u5f55\uff0c\u9010\u6761\u6267\u884c\u7528\u6237\u521b\u5efa\u3001\u5bc6\u94a5\u5199\u5165\u3001\u8f6f\u4ef6\u66f4\u65b0\u3001\u9632\u706b\u5899\u914d\u7f6e\u7b49\u547d\u4ee4\u3002\u5355\u53f0\u670d\u52a1\u5668\u8fd9\u6837\u505a\u95ee\u9898\u4e0d\u5927\uff0c\u4f46\u6279\u91cf\u573a\u666f\u4f1a\u5f88\u5feb\u66b4\u9732\u51fa\u4e09\u4e2a\u98ce\u9669\uff1a\u914d\u7f6e\u4e0d\u53ef\u8ffd\u6eaf\u3001\u6267\u884c\u987a\u5e8f\u4e0d\u7a33\u5b9a\u3001\u6545\u969c\u6392\u67e5\u4f9d\u8d56\u4e2a\u4eba\u8bb0\u5fc6\u3002\u6bd4\u5982\u540c\u4e00\u6279 10 \u53f0\u8282\u70b9\u91cc\uff0c\u6709 2 \u53f0\u6ca1\u6709\u6267\u884c\u7cfb\u7edf\u66f4\u65b0\uff0c\u6709 1 \u53f0\u5fd8\u8bb0\u9650\u5236 root \u767b\u5f55\uff0c\u540e\u7eed\u6392\u67e5\u5c31\u4f1a\u4ece\u5e94\u7528\u5c42\u4e00\u8def\u8ffd\u5230\u7cfb\u7edf\u5c42\u3002<\/p>\n<p>cloud-init \u7684\u601d\u8def\u662f\u628a\u521d\u59cb\u5316\u52a8\u4f5c\u653e\u5230\u5b9e\u4f8b\u9996\u6b21\u542f\u52a8\u9636\u6bb5\u3002\u4f60\u521b\u5efa\u670d\u52a1\u5668\u65f6\u6ce8\u5165\u4e00\u6bb5 user-data\uff0c\u7cfb\u7edf\u542f\u52a8\u540e\u7531 cloud-init \u8bfb\u53d6\u5e76\u6267\u884c\u3002\u5b83\u4e0d\u662f\u66ff\u4ee3\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\uff0c\u800c\u662f\u8d1f\u8d23\u201c\u673a\u5668\u51fa\u751f\u65f6\u7684\u7b2c\u4e00\u5957\u6807\u51c6\u52a8\u4f5c\u201d\u3002\u5982\u679c\u540e\u7eed\u8fd8\u8981\u957f\u671f\u7ba1\u7406\u8f6f\u4ef6\u7248\u672c\u3001\u670d\u52a1\u914d\u7f6e\u548c\u53d1\u5e03\u6d41\u7a0b\uff0c\u53ef\u4ee5\u518d\u63a5\u5165 Ansible\u3001SaltStack \u6216 CI\/CD\uff08\u6301\u7eed\u96c6\u6210\u4e0e\u6301\u7eed\u4ea4\u4ed8\uff09\u6d41\u6c34\u7ebf\uff1b\u4f46\u6700\u521d\u7684\u7528\u6237\u3001\u5bc6\u94a5\u3001\u5b89\u5168\u57fa\u7ebf\uff0c\u9002\u5408\u7528 cloud-init \u5148\u7edf\u4e00\u3002<\/p>\n<p>\u5728 <a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e<\/a> \u7c7b\u5de5\u4f5c\u4e2d\uff0c\u6211\u4eec\u5efa\u8bae\u628a\u521d\u59cb\u5316\u52a8\u4f5c\u62c6\u6210\u4e24\u5c42\uff1a\u7b2c\u4e00\u5c42\u662f\u6240\u6709\u670d\u52a1\u5668\u90fd\u5e94\u8be5\u4e00\u81f4\u7684\u57fa\u7ebf\uff0c\u4f8b\u5982\u65f6\u533a\u3001\u666e\u901a\u7ba1\u7406\u5458\u7528\u6237\u3001SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u5bc6\u94a5\u3001\u81ea\u52a8\u5b89\u5168\u66f4\u65b0\uff1b\u7b2c\u4e8c\u5c42\u624d\u662f\u4e1a\u52a1\u89d2\u8272\u5dee\u5f02\uff0c\u4f8b\u5982 Web \u8282\u70b9\u3001\u6570\u636e\u5e93\u8282\u70b9\u3001\u7f13\u5b58\u8282\u70b9\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff0c\u5373\u4f7f\u4e1a\u52a1\u811a\u672c\u6682\u65f6\u5931\u8d25\uff0c\u670d\u52a1\u5668\u4e5f\u5df2\u7ecf\u5177\u5907\u53ef\u767b\u5f55\u3001\u53ef\u5ba1\u8ba1\u3001\u57fa\u7840\u5b89\u5168\u53ef\u63a7\u7684\u72b6\u6001\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/cloud-init-server-ssh-boot-path.webp\" alt=\"cloud-init \u9996\u6b21\u542f\u52a8\u9636\u6bb5\u7684\u914d\u7f6e\u8def\u5f84\" loading=\"lazy\" \/><\/p>\n<h2>\u4e00\u4efd\u53ef\u590d\u7528\u7684 cloud-init \u57fa\u7ebf\u5e94\u5305\u542b\u4ec0\u4e48<\/h2>\n<p>\u4e0d\u8981\u628a cloud-init \u5199\u6210\u201c\u4ec0\u4e48\u90fd\u88c5\u201d\u7684\u4e07\u80fd\u811a\u672c\u3002\u521d\u59cb\u5316\u914d\u7f6e\u8d8a\u590d\u6742\uff0c\u9996\u6b21\u542f\u52a8\u5931\u8d25\u7684\u6982\u7387\u8d8a\u9ad8\uff1b\u914d\u7f6e\u8d8a\u9760\u8fd1\u7cfb\u7edf\u57fa\u7ebf\uff0c\u590d\u7528\u4ef7\u503c\u8d8a\u5927\u3002\u5bf9\u5927\u591a\u6570\u4e2d\u5c0f\u56e2\u961f\u6765\u8bf4\uff0c\u4e00\u4efd\u5408\u7406\u7684 cloud-init \u57fa\u7ebf\u901a\u5e38\u5305\u542b\u7528\u6237\u3001\u767b\u5f55\u3001\u5b89\u5168\u66f4\u65b0\u3001\u57fa\u7840\u5de5\u5177\u548c\u65e5\u5fd7\u9a8c\u8bc1 5 \u7c7b\u5185\u5bb9\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4efd\u53ef\u4f5c\u4e3a\u8d77\u70b9\u7684 user-data \u793a\u4f8b\u3002\u5b83\u521b\u5efa\u4e00\u4e2a\u666e\u901a\u7ba1\u7406\u5458\u7528\u6237\uff0c\u5199\u5165 SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u516c\u94a5\uff0c\u5173\u95ed\u5bc6\u7801\u767b\u5f55\uff0c\u5e76\u5b89\u88c5\u5e38\u7528\u57fa\u7840\u5de5\u5177\u3002\u5b9e\u9645\u4f7f\u7528\u65f6\uff0c\u8bf7\u628a\u793a\u4f8b\u516c\u94a5\u66ff\u6362\u6210\u4f60\u81ea\u5df1\u7684 ed25519 \u6216 rsa \u516c\u94a5\uff0c\u4e0d\u8981\u76f4\u63a5\u590d\u5236\u5360\u4f4d\u5185\u5bb9\u3002<\/p>\n<pre><code class=\"language-yaml\">#cloud-config\ntimezone: Asia\/Shanghai\npackage_update: true\npackage_upgrade: true\n\nusers:\n  - name: ops\n    groups: [sudo]\n    shell: \/bin\/bash\n    sudo: [&quot;ALL=(ALL) NOPASSWD:ALL&quot;]\n    lock_passwd: true\n    ssh_authorized_keys:\n      - ssh-ed25519 AAAA_REPLACE_WITH_YOUR_PUBLIC_KEY ops@example\n\nssh_pwauth: false\ndisable_root: true\n\npackages:\n  - curl\n  - vim\n  - git\n  - ufw\n  - fail2ban\n\nwrite_files:\n  - path: \/etc\/ssh\/sshd_config.d\/99-hardening.conf\n    permissions: '0644'\n    content: |\n      PasswordAuthentication no\n      PermitRootLogin no\n      PubkeyAuthentication yes\n\nruncmd:\n  - systemctl reload ssh || systemctl reload sshd\n  - ufw allow OpenSSH\n  - ufw --force enable\n  - systemctl enable --now fail2ban\n  - cloud-init status --long &gt; \/root\/cloud-init-final-status.txt\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u914d\u7f6e\u6709\u4e00\u4e2a\u660e\u786e\u8fb9\u754c\uff1a\u5b83\u53ea\u505a\u7cfb\u7edf\u57fa\u7840\u521d\u59cb\u5316\uff0c\u4e0d\u76f4\u63a5\u90e8\u7f72\u4e1a\u52a1\u4ee3\u7801\u3002\u539f\u56e0\u5f88\u7b80\u5355\uff0c\u4e1a\u52a1\u90e8\u7f72\u901a\u5e38\u4f9d\u8d56\u7248\u672c\u3001\u73af\u5883\u53d8\u91cf\u3001\u6570\u636e\u5e93\u8fde\u63a5\u548c\u56de\u6eda\u7b56\u7565\uff0c\u53d8\u5316\u9891\u7387\u9ad8\uff1b\u800c\u7528\u6237\u3001SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u548c\u57fa\u7840\u5b89\u5168\u914d\u7f6e\u53d8\u5316\u8f83\u5c11\uff0c\u9002\u5408\u6c89\u6dc0\u6210\u7a33\u5b9a\u6a21\u677f\u3002\u5982\u679c\u4f60\u8fd8\u5728\u89c4\u5212\u540e\u7eed\u7f51\u7ad9\u8fd0\u884c\u73af\u5883\uff0c\u53ef\u4ee5\u7ed3\u5408 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/ttfb-hosting-optimization\/\">\u7f51\u7ad9\u6027\u80fd\u4f18\u5316<\/a> \u601d\u8def\uff0c\u628a\u7cfb\u7edf\u57fa\u7ebf\u548c\u5e94\u7528\u4f18\u5316\u5206\u5f00\u7ba1\u7406\uff0c\u907f\u514d\u521d\u59cb\u5316\u811a\u672c\u8d8a\u6765\u8d8a\u81c3\u80bf\u3002<\/p>\n<h2>\u6279\u91cf\u4f7f\u7528\u65f6\uff0c\u5148\u5b9a\u4e49\u53d8\u91cf\uff0c\u518d\u751f\u6210\u914d\u7f6e<\/h2>\n<p>\u5f53\u670d\u52a1\u5668\u6570\u91cf\u4ece 1 \u53f0\u53d8\u6210 20 \u53f0\uff0c\u771f\u6b63\u9700\u8981\u63a7\u5236\u7684\u4e0d\u662f YAML \u6587\u4ef6\u672c\u8eab\uff0c\u800c\u662f\u53d8\u91cf\u6765\u6e90\u3002\u6bd4\u5982\u7ba1\u7406\u5458\u7528\u6237\u540d\u3001SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u516c\u94a5\u3001\u65f6\u533a\u3001\u5141\u8bb8\u8bbf\u95ee\u7684\u7ba1\u7406 IP\u3001\u662f\u5426\u542f\u7528\u81ea\u52a8\u66f4\u65b0\uff0c\u8fd9\u4e9b\u503c\u5e94\u5f53\u4ece\u540c\u4e00\u4efd\u6e05\u5355\u751f\u6210\uff0c\u800c\u4e0d\u662f\u7531\u4e0d\u540c\u6210\u5458\u624b\u5de5\u7f16\u8f91\u591a\u4efd\u6587\u4ef6\u3002<\/p>\n<p>\u4e00\u4e2a\u5b9e\u7528\u505a\u6cd5\u662f\u7ef4\u62a4\u4e00\u4e2a\u73af\u5883\u53d8\u91cf\u6587\u4ef6\uff0c\u518d\u7528\u6a21\u677f\u5de5\u5177\u751f\u6210 user-data\u3002\u4e0b\u9762\u793a\u4f8b\u7528 shell \u73af\u5883\u53d8\u91cf\u8868\u8fbe\u5173\u952e\u53c2\u6570\uff0c\u9002\u5408\u5c0f\u56e2\u961f\u8d77\u6b65\uff1b\u5982\u679c\u73af\u5883\u66f4\u590d\u6742\uff0c\u53ef\u4ee5\u6539\u7528 Terraform\u3001Jinja2 \u6216\u5e73\u53f0\u4fa7\u6a21\u677f\u80fd\u529b\u3002<\/p>\n<pre><code class=\"language-bash\">export OPS_USER=&quot;ops&quot;\nexport TIMEZONE=&quot;Asia\/Shanghai&quot;\nexport SSH_KEY_FILE=&quot;$HOME\/.ssh\/id_ed25519.pub&quot;\nexport ADMIN_CIDR=&quot;203.0.113.10\/32&quot;\n\ntest -f &quot;$SSH_KEY_FILE&quot; || { echo &quot;missing ssh public key&quot;; exit 1; }\n<\/code><\/pre>\n<p>\u968f\u540e\u628a\u8fd9\u4e9b\u53d8\u91cf\u6e32\u67d3\u5230 cloud-init \u6a21\u677f\u91cc\u3002\u65e0\u8bba\u4f60\u4f7f\u7528\u54ea\u79cd\u4e91\u670d\u52a1\u5668\uff08\u6309\u9700\u5206\u914d\u8d44\u6e90\u7684\u670d\u52a1\u5668\uff09\u521b\u5efa\u65b9\u5f0f\uff0c\u90fd\u5e94\u786e\u4fdd\u6700\u7ec8\u6ce8\u5165\u7684\u662f\u5b8c\u6574 user-data\uff0c\u800c\u4e0d\u662f\u90e8\u7f72\u5b8c\u6210\u540e\u518d\u8865\u6551\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u6279\u91cf\u521b\u5efa\u51fa\u7684\u670d\u52a1\u5668\u4ece\u7b2c\u4e00\u5206\u949f\u8d77\u5c31\u9075\u5faa\u540c\u4e00\u5957\u767b\u5f55\u548c\u5b89\u5168\u89c4\u5219\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/cloud-init-server-ssh-template.webp\" alt=\"\u6279\u91cf\u751f\u6210 cloud-init \u914d\u7f6e\u7684\u53d8\u91cf\u4e0e\u6a21\u677f\u5173\u7cfb\" loading=\"lazy\" \/><\/p>\n<p>\u5728 <a href=\"https:\/\/cn.hostease.com\/blog\/wordpress\/\">WordPress\u6559\u7a0b<\/a> \u6216\u4f01\u4e1a\u7ad9\u9879\u76ee\u4e2d\uff0c\u6d4b\u8bd5\u73af\u5883\u3001\u9884\u53d1\u5e03\u73af\u5883\u548c\u751f\u4ea7\u73af\u5883\u5e38\u5e38\u4f1a\u4e34\u65f6\u6269\u5bb9\u3002\u6211\u4eec\u89c1\u8fc7\u4e00\u4e2a\u5178\u578b\u6848\u4f8b\uff1a\u56e2\u961f\u539f\u5148\u6bcf\u6b21\u65b0\u5efa\u670d\u52a1\u5668\u90fd\u7531\u8fd0\u7ef4\u624b\u5de5\u6267\u884c 18 \u6761\u547d\u4ee4\uff0c\u5e73\u5747\u8017\u65f6 20 \u5206\u949f\uff0c\u4e14\u7ecf\u5e38\u6f0f\u6389\u65f6\u533a\u6216 fail2ban\u3002\u6539\u6210 cloud-init \u6a21\u677f\u540e\uff0c\u521b\u5efa 5 \u53f0\u6d4b\u8bd5\u8282\u70b9\u53ea\u9700\u8981\u786e\u8ba4 4 \u4e2a\u53d8\u91cf\uff0c\u9996\u6b21\u767b\u5f55\u540e\u7528\u540c\u4e00\u7ec4\u547d\u4ee4\u9a8c\u8bc1\uff0c\u914d\u7f6e\u5dee\u5f02\u660e\u663e\u51cf\u5c11\u3002<\/p>\n<h2>SSH \u4e0e\u57fa\u7840\u5b89\u5168\u914d\u7f6e\u8981\u4fdd\u5b88\uff0c\u4e0d\u8981\u8ffd\u6c42\u82b1\u54e8<\/h2>\n<p>\u5b89\u5168\u914d\u7f6e\u7684\u76ee\u6807\u4e0d\u662f\u628a\u6240\u6709\u7aef\u53e3\u90fd\u5173\u6389\uff0c\u800c\u662f\u5728\u201c\u4e0d\u5f71\u54cd\u540e\u7eed\u8fd0\u7ef4\u201d\u7684\u524d\u63d0\u4e0b\u51cf\u5c11\u66b4\u9732\u9762\u3002cloud-init \u9996\u6b21\u6267\u884c\u65f6\uff0c\u4e00\u65e6 SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u914d\u7f6e\u5199\u9519\uff0c\u53ef\u80fd\u5bfc\u81f4\u65b0\u670d\u52a1\u5668\u65e0\u6cd5\u767b\u5f55\u3002\u56e0\u6b64\u6211\u4eec\u5efa\u8bae\u5206\u4e24\u6b65\u5904\u7406\uff1a\u5148\u4fdd\u8bc1\u5bc6\u94a5\u767b\u5f55\u53ef\u7528\uff0c\u518d\u5173\u95ed\u5bc6\u7801\u767b\u5f55\u548c root \u767b\u5f55\uff1b\u9632\u706b\u5899\u53ea\u5f00\u653e\u660e\u786e\u9700\u8981\u7684\u7aef\u53e3\uff0c\u4e0d\u8981\u4e00\u6b21\u6027\u5199\u5165\u590d\u6742\u89c4\u5219\u3002<\/p>\n<p>\u53ef\u4ee5\u628a\u9996\u6b21\u9a8c\u8bc1\u547d\u4ee4\u5199\u8fdb\u4ea4\u4ed8\u6e05\u5355\uff0c\u800c\u4e0d\u662f\u53ea\u76f8\u4fe1 cloud-init \u65e5\u5fd7\u3002\u65b0\u670d\u52a1\u5668\u521b\u5efa\u5b8c\u6210\u540e\uff0c\u81f3\u5c11\u6267\u884c\u4e0b\u9762 4 \u7ec4\u68c0\u67e5\uff1a<\/p>\n<pre><code class=\"language-bash\">cloud-init status --long\nid ops\nsudo sshd -t\nsudo ufw status verbose\n<\/code><\/pre>\n<p>\u5982\u679c <code>cloud-init status --long<\/code> \u4e0d\u662f <code>status: done<\/code>\uff0c\u4e0d\u8981\u7ee7\u7eed\u90e8\u7f72\u4e1a\u52a1\uff1b\u5982\u679c <code>sshd -t<\/code> \u8fd4\u56de\u914d\u7f6e\u9519\u8bef\uff0c\u8981\u5148\u901a\u8fc7\u63a7\u5236\u53f0\u6216\u6551\u63f4\u6a21\u5f0f\u4fee\u590d\u3002\u5bf9\u5916\u8d38\u7ad9\u3001\u4f01\u4e1a\u5b98\u7f51\u6216\u6d3b\u52a8\u9875\u6765\u8bf4\uff0c\u65e9\u671f\u5ffd\u7565\u8fd9\u7c7b\u57fa\u7840\u68c0\u67e5\uff0c\u540e\u7eed\u53ef\u80fd\u8868\u73b0\u4e3a\u201c\u5e94\u7528\u5076\u53d1\u4e0d\u53ef\u8bbf\u95ee\u201d\uff0c\u4f46\u6839\u56e0\u5176\u5b9e\u662f\u7cfb\u7edf\u521d\u59cb\u5316\u4e0d\u4e00\u81f4\u3002<\/p>\n<p>\u8fd9\u91cc\u8fd8\u8981\u63d0\u9192\u4e00\u4e2a\u5e38\u89c1\u8bef\u533a\uff1a\u4e0d\u8981\u628a SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u7aef\u53e3\u6539\u6210\u67d0\u4e2a\u201c\u795e\u79d8\u7aef\u53e3\u201d\u5c31\u5f53\u6210\u5b89\u5168\u7b56\u7565\u3002\u7aef\u53e3\u53d8\u66f4\u53ef\u4ee5\u964d\u4f4e\u90e8\u5206\u626b\u63cf\u566a\u97f3\uff0c\u4f46\u4e0d\u80fd\u66ff\u4ee3\u5bc6\u94a5\u767b\u5f55\u3001\u7981\u7528\u5bc6\u7801\u3001\u9650\u5236\u7ba1\u7406\u6765\u6e90\u548c\u53ca\u65f6\u66f4\u65b0\u3002\u5bf9\u4e8e\u9700\u8981\u7a33\u5b9a\u8fd0\u884c\u7684\u7f51\u7ad9\uff0c<a href=\"https:\/\/cn.hostease.com\/web-hosting\/\">\u865a\u62df\u4e3b\u673a\uff08\u5171\u4eab\u5f0f\u7f51\u7ad9\u6258\u7ba1\u670d\u52a1\uff09<\/a> \u4e0e\u4e91\u670d\u52a1\u5668\uff08\u6309\u9700\u5206\u914d\u8d44\u6e90\u7684\u670d\u52a1\u5668\uff09\u7684\u8fd0\u7ef4\u8fb9\u754c\u4e0d\u540c\uff1b\u524d\u8005\u5f88\u591a\u5b89\u5168\u57fa\u7ebf\u7531\u5e73\u53f0\u6258\u7ba1\uff0c\u540e\u8005\u5219\u9700\u8981\u4f60\u81ea\u5df1\u628a\u521d\u59cb\u5316\u548c\u6301\u7eed\u7ef4\u62a4\u6d41\u7a0b\u505a\u597d\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/cloud-init-server-ssh-security.webp\" alt=\"SSH \u5bc6\u94a5\u767b\u5f55\u4e0e\u9632\u706b\u5899\u57fa\u7840\u5b89\u5168\u5173\u7cfb\" loading=\"lazy\" \/><\/p>\n<h2>\u628a\u9a8c\u8bc1\u7ed3\u679c\u5199\u8fdb\u4ea4\u4ed8\u6d41\u7a0b\uff0c\u907f\u514d\u201c\u770b\u8d77\u6765\u6210\u529f\u201d<\/h2>\n<p>cloud-init \u6700\u5bb9\u6613\u88ab\u8bef\u7528\u7684\u5730\u65b9\uff0c\u662f\u53ea\u770b\u670d\u52a1\u5668\u80fd\u767b\u5f55\uff0c\u5c31\u8ba4\u4e3a\u521d\u59cb\u5316\u6210\u529f\u3002\u66f4\u7a33\u59a5\u7684\u505a\u6cd5\uff0c\u662f\u628a\u9a8c\u8bc1\u7ed3\u679c\u4e5f\u7eb3\u5165\u4ea4\u4ed8\u6d41\u7a0b\uff1a\u6bcf\u53f0\u670d\u52a1\u5668\u521b\u5efa\u540e\u90fd\u8f93\u51fa cloud-init \u72b6\u6001\u3001\u7528\u6237\u4fe1\u606f\u3001SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u914d\u7f6e\u6d4b\u8bd5\u3001\u9632\u706b\u5899\u72b6\u6001\u548c\u5173\u952e\u670d\u52a1\u72b6\u6001\u3002\u8fd9\u6837\u5373\u4f7f\u540e\u7eed\u53d1\u751f\u95ee\u9898\uff0c\u4e5f\u80fd\u5feb\u901f\u5224\u65ad\u662f\u521d\u59cb\u5316\u9636\u6bb5\u7684\u5dee\u5f02\uff0c\u8fd8\u662f\u5e94\u7528\u90e8\u7f72\u9636\u6bb5\u7684\u53d8\u5316\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u51c6\u5907\u4e00\u6bb5\u7b80\u5355\u7684\u9a8c\u8bc1\u811a\u672c\uff0c\u5728\u9996\u6b21\u767b\u5f55\u540e\u6267\u884c\uff1a<\/p>\n<pre><code class=\"language-bash\">#!\/usr\/bin\/env bash\nset -euo pipefail\n\necho &quot;[1\/5] cloud-init&quot;\ncloud-init status --long\n\necho &quot;[2\/5] user&quot;\nid ops\n\necho &quot;[3\/5] ssh config&quot;\nsudo sshd -t\n\necho &quot;[4\/5] firewall&quot;\nsudo ufw status verbose\n\necho &quot;[5\/5] fail2ban&quot;\nsystemctl is-active fail2ban\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u811a\u672c\u4e0d\u8ffd\u6c42\u590d\u6742\uff0c\u53ea\u786e\u8ba4 5 \u4e2a\u57fa\u7840\u4e8b\u5b9e\u3002\u5b83\u7684\u610f\u4e49\u5728\u4e8e\u7edf\u4e00\u4ea4\u4ed8\u53e3\u5f84\uff1a\u4e0d\u662f\u201c\u6211\u521a\u624d\u5e94\u8be5\u6267\u884c\u8fc7\u201d\uff0c\u800c\u662f\u201c\u8fd9\u53f0\u670d\u52a1\u5668\u73b0\u5728\u786e\u5b9e\u5904\u4e8e\u53ef\u9a8c\u8bc1\u72b6\u6001\u201d\u3002\u5982\u679c\u4f60\u4f7f\u7528 Hostease \u7684 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS<\/a>\uff08<a href=\"https:\/\/cn.hostease.com\/vps\/\">\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u4e3b\u673a\u627f\u8f7d\u591a\u4e2a\u9879\u76ee\uff0c\u6211\u4eec\u5efa\u8bae\u628a\u8fd9\u7c7b\u57fa\u7ebf\u811a\u672c\u653e\u8fdb\u56e2\u961f\u4ed3\u5e93\uff0c\u5e76\u5728\u6bcf\u6b21\u65b0\u5efa\u670d\u52a1\u5668\u540e\u4fdd\u7559\u9a8c\u8bc1\u8f93\u51fa\uff0c\u65b9\u4fbf\u540e\u7eed\u5ba1\u8ba1\u548c\u4ea4\u63a5\u3002<\/p>\n<h2>\u5e38\u89c1\u95ee\u9898\uff1a\u54ea\u4e9b\u5185\u5bb9\u4e0d\u9002\u5408\u653e\u8fdb cloud-init<\/h2>\n<p>cloud-init \u9002\u5408\u505a\u9996\u6b21\u542f\u52a8\u7684\u57fa\u7840\u52a8\u4f5c\uff0c\u4f46\u4e0d\u9002\u5408\u627f\u62c5\u6240\u6709\u8fd0\u7ef4\u804c\u8d23\u3002\u6bd4\u5982\u6570\u636e\u5e93\u521d\u59cb\u5316\u3001\u8bc1\u4e66\u7eed\u671f\u3001\u5e94\u7528\u53d1\u5e03\u3001\u7070\u5ea6\u5207\u6362\u548c\u5907\u4efd\u7b56\u7565\uff0c\u90fd\u4e0d\u5efa\u8bae\u5b8c\u5168\u585e\u8fdb user-data\u3002\u539f\u56e0\u662f\u8fd9\u4e9b\u4efb\u52a1\u9700\u8981\u91cd\u590d\u6267\u884c\u3001\u9700\u8981\u56de\u6eda\uff0c\u751a\u81f3\u9700\u8981\u4f9d\u8d56\u5916\u90e8\u72b6\u6001\uff1b\u800c cloud-init \u66f4\u50cf\u4e00\u6b21\u6027\u542f\u52a8\u811a\u672c\uff0c\u5931\u8d25\u540e\u91cd\u8dd1\u548c\u6392\u9519\u6210\u672c\u8f83\u9ad8\u3002<\/p>\n<p>\u6211\u4eec\u5efa\u8bae\u9075\u5faa\u4e00\u4e2a\u7b80\u5355\u5224\u65ad\uff1a\u5982\u679c\u8fd9\u9879\u914d\u7f6e\u201c\u6bcf\u53f0\u670d\u52a1\u5668\u51fa\u751f\u65f6\u90fd\u5e94\u8be5\u4e00\u6837\u201d\uff0c\u9002\u5408\u653e\u8fdb cloud-init\uff1b\u5982\u679c\u5b83\u201c\u4f1a\u968f\u7740\u4e1a\u52a1\u7248\u672c\u6301\u7eed\u53d8\u5316\u201d\uff0c\u5c31\u4ea4\u7ed9\u540e\u7eed\u914d\u7f6e\u7ba1\u7406\u6216\u53d1\u5e03\u7cfb\u7edf\u3002\u6309\u8fd9\u4e2a\u6807\u51c6\uff0c\u7528\u6237\u3001SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u3001\u65f6\u533a\u3001\u57fa\u7840\u5de5\u5177\u3001\u5b89\u5168\u66f4\u65b0\u5c5e\u4e8e\u524d\u8005\uff1b\u7ad9\u70b9\u4ee3\u7801\u3001\u6570\u636e\u5e93\u8fc1\u79fb\u3001\u7f13\u5b58\u7b56\u7565\u548c\u4e1a\u52a1\u73af\u5883\u53d8\u91cf\u5c5e\u4e8e\u540e\u8005\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u9700\u8981\u63a7\u5236\u7684\u662f\u654f\u611f\u4fe1\u606f\u3002\u4e0d\u8981\u628a\u6570\u636e\u5e93\u5bc6\u7801\u3001\u957f\u671f\u8bbf\u95ee\u4ee4\u724c\u3001\u79c1\u94a5\u76f4\u63a5\u5199\u5165 user-data\u3002\u8bb8\u591a\u5e73\u53f0\u4f1a\u5728\u63a7\u5236\u53f0\u6216\u5b9e\u4f8b\u5143\u6570\u636e\u4e2d\u4fdd\u7559 user-data \u8bb0\u5f55\uff0c\u4e00\u65e6\u6743\u9650\u7ba1\u7406\u4e0d\u4e25\uff0c\u5c31\u53ef\u80fd\u9020\u6210\u6cc4\u9732\u3002\u66f4\u5b89\u5168\u7684\u505a\u6cd5\u662f\u53ea\u5199\u516c\u94a5\u3001\u89d2\u8272\u6807\u8bc6\u548c\u521d\u59cb\u5316\u5165\u53e3\uff0c\u654f\u611f\u503c\u901a\u8fc7\u4e13\u95e8\u7684\u5bc6\u94a5\u7ba1\u7406\u6216\u540e\u7eed\u53d7\u63a7\u6d41\u7a0b\u4e0b\u53d1\u3002<\/p>\n<h2>\u603b\u7ed3\uff1a\u5148\u7edf\u4e00\u57fa\u7ebf\uff0c\u518d\u8c08\u89c4\u6a21\u5316\u90e8\u7f72<\/h2>\n<p>\u603b\u7ed3\u6765\u770b\uff0ccloud-init \u6279\u91cf\u521d\u59cb\u5316\u4e91\u670d\u52a1\u5668\uff08\u6309\u9700\u5206\u914d\u8d44\u6e90\u7684\u670d\u52a1\u5668\uff09\u7684\u5173\u952e\uff0c\u4e0d\u662f\u5199\u4e00\u4efd\u5f88\u957f\u7684\u811a\u672c\uff0c\u800c\u662f\u628a\u9996\u6b21\u542f\u52a8\u9636\u6bb5\u7684\u57fa\u7ebf\u52a8\u4f5c\u6807\u51c6\u5316\uff1a\u7edf\u4e00\u7528\u6237\u3001\u7edf\u4e00 SSH\uff08\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u5bc6\u94a5\u3001\u7edf\u4e00\u57fa\u7840\u5b89\u5168\u3001\u7edf\u4e00\u9a8c\u8bc1\u65b9\u5f0f\u3002\u8fd9\u6837\u505a\u53ef\u4ee5\u51cf\u5c11\u4eba\u5de5\u914d\u7f6e\u6f02\u79fb\uff0c\u4e5f\u80fd\u8ba9\u540e\u7eed\u6392\u969c\u4ece\u201c\u731c\u5f53\u65f6\u505a\u4e86\u4ec0\u4e48\u201d\u53d8\u6210\u201c\u68c0\u67e5\u9a8c\u8bc1\u8f93\u51fa\u662f\u5426\u7b26\u5408\u6807\u51c6\u201d\u3002<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u7ba1\u7406 3 \u53f0\u4ee5\u4e0a\u670d\u52a1\u5668\uff0c\u6211\u4eec\u5efa\u8bae\u5148\u4ece\u4e00\u4efd\u6700\u5c0f cloud-init \u6a21\u677f\u5f00\u59cb\uff0c\u53ea\u8986\u76d6\u7528\u6237\u3001\u5bc6\u94a5\u3001\u9632\u706b\u5899\u548c\u57fa\u7840\u5de5\u5177\uff1b\u7b49\u9a8c\u8bc1\u7a33\u5b9a\u540e\uff0c\u518d\u9010\u6b65\u628a\u56e2\u961f\u5171\u8bc6\u6c89\u6dc0\u8fdb\u53bb\u3002\u5bf9\u4e8e\u6b63\u5728\u9009\u62e9\u627f\u8f7d\u73af\u5883\u7684\u7ad9\u957f\u6216\u4e2d\u5c0f\u56e2\u961f\uff0c\u4e5f\u53ef\u4ee5\u7ed3\u5408 Hostease \u7684 VPS\uff08\u865a\u62df<a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u4e3b\u673a\u65b9\u6848\uff0c\u628a\u670d\u52a1\u5668\u89c4\u683c\u3001\u521d\u59cb\u5316\u6a21\u677f\u548c\u4e0a\u7ebf\u9a8c\u8bc1\u6e05\u5355\u4e00\u8d77\u89c4\u5212\uff0c\u907f\u514d\u4e0a\u7ebf\u524d\u540e\u53cd\u590d\u8865\u914d\u7f6e\u3002<\/p>\n<p>\u6700\u540e\u53ef\u4ee5\u8003\u8651\u5efa\u7acb\u4e00\u4e2a\u56fa\u5b9a\u6d41\u7a0b\uff1a\u65b0\u5efa\u670d\u52a1\u5668\u524d\u786e\u8ba4\u53d8\u91cf\uff0c\u521b\u5efa\u65f6\u6ce8\u5165 user-data\uff0c\u9996\u6b21\u767b\u5f55\u540e\u6267\u884c\u9a8c\u8bc1\u811a\u672c\uff0c\u9a8c\u8bc1\u901a\u8fc7\u518d\u90e8\u7f72\u4e1a\u52a1\u3002\u8fd9\u4e2a\u6d41\u7a0b\u5e76\u4e0d\u590d\u6742\uff0c\u5374\u80fd\u663e\u8457\u964d\u4f4e\u6279\u91cf\u521d\u59cb\u5316\u4e2d\u7684\u968f\u673a\u9519\u8bef\u3002\u771f\u6b63\u53ef\u9760\u7684\u89c4\u6a21\u5316\u8fd0\u7ef4\uff0c\u5f80\u5f80\u5c31\u662f\u4ece\u8fd9\u4e9b\u53ef\u590d\u7528\u3001\u53ef\u9a8c\u8bc1\u7684\u5c0f\u6b65\u9aa4\u5f00\u59cb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecd\u5982\u4f55\u7528 cloud-init \u6279\u91cf\u521d\u59cb\u5316\u4e91\u670d\u52a1\u5668\uff0c\u7edf\u4e00\u7528\u6237\u3001SSH\u3001\u5b89\u5168\u52a0\u56fa\u3001\u66f4\u65b0\u7b56\u7565\u548c\u9a8c\u8bc1\u6d41\u7a0b\uff0c\u51cf\u5c11\u624b\u5de5\u914d\u7f6e\u5dee\u5f02\u3002<\/p>\n","protected":false},"author":2,"featured_media":32322,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4099],"tags":[4709,3902,4710,4711,4712],"class_list":["post-32326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials","tag-cloud-init","tag-ssh","tag-4710","tag-4711","tag-4712"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/cloud-init-server-ssh-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=32326"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32326\/revisions"}],"predecessor-version":[{"id":32327,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32326\/revisions\/32327"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/32322"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=32326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=32326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=32326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}