{"id":208846,"date":"2025-09-29T23:21:28","date_gmt":"2025-09-29T15:21:28","guid":{"rendered":"https:\/\/www.server.hk\/blog\/208846\/"},"modified":"2025-09-29T23:21:34","modified_gmt":"2025-09-29T15:21:34","slug":"vps-docker-3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208846\/","title":{"rendered":"\u9999\u6e2fVPS\u652f\u6301Docker\u5bb9\u5668\u5417\uff1f\u5b9e\u6d4b\u7ed3\u679c\u4e0e\u90e8\u7f72\u8981\u70b9"},"content":{"rendered":"<p>\u5728\u9009\u62e9\u9999\u6e2fVPS\u90e8\u7f72\u5bb9\u5668\u5316\u5e94\u7528\u65f6\uff0c\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\u5e38\u4f1a\u95ee\uff1a<strong>\u9999\u6e2fVPS\u662f\u5426\u652f\u6301Docker\u5bb9\u5668\uff1f<\/strong>\u7b54\u6848\u5e76\u4e0d\u5355\u4e00\uff0c\u53d6\u51b3\u4e8eVPS\u7684\u865a\u62df\u5316\u6280\u672f\u4e0e\u5185\u6838\u7279\u6027\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5b9e\u6d4b\u65b9\u6cd5\u3001\u5e38\u89c1\u5e94\u7528\u573a\u666f\u3001\u4f18\u52bf\u4e0e\u6ce8\u610f\u4e8b\u9879\u3001\u9009\u8d2d\u5efa\u8bae\u7b49\u65b9\u9762\u7ed9\u51fa\u5168\u9762\u3001\u6280\u672f\u7ec6\u8282\u4e30\u5bcc\u7684\u8bb2\u89e3\uff0c\u5e2e\u52a9\u4f60\u5728\u9999\u6e2f\u6216\u8de8\u5883\u90e8\u7f72\uff08\u5982\u7f8e\u56fdVPS\u3001\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\uff09\u65f6\u505a\u51fa\u7a33\u5065\u51b3\u7b56\u3002<\/p>\n<h2>\u5bb9\u5668\u8fd0\u884c\u539f\u7406\u4e0eVPS\u517c\u5bb9\u6027\u8981\u70b9<\/h2>\n<p>Docker\u4f9d\u8d56Linux\u5185\u6838\u63d0\u4f9b\u7684\u4e24\u4e2a\u6838\u5fc3\u529f\u80fd\uff1a<strong>namespaces<\/strong>\uff08\u8fdb\u7a0b\u9694\u79bb\u3001\u7f51\u7edc\u3001PID\u3001\u7528\u6237\u7b49\uff09\u548c<strong>cgroups<\/strong>\uff08\u8d44\u6e90\u63a7\u5236\uff09\uff0c\u6b64\u5916\u8fd8\u9700\u8981\u6587\u4ef6\u7cfb\u7edf\u652f\u6301\uff08\u5982OverlayFS\uff09\u548c\u5408\u9002\u7684\u5185\u6838\u914d\u7f6e\u9879\u3002\u56e0\u6b64\u5224\u65ad\u4e00\u4e2aVPS\u662f\u5426\u80fd\u8fd0\u884cDocker\uff0c\u5e94\u5173\u6ce8\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u865a\u62df\u5316\u7c7b\u578b<\/strong> \u2014 KVM\u3001Xen PV\/HVM\u3001Hyper-V \u7b49\u5b8c\u5168\u865a\u62df\u5316\uff08full virtualization\uff09\u901a\u5e38\u53ef\u8fd0\u884cDocker\uff1b\u800c\u57fa\u4e8e\u5185\u6838\u5171\u4eab\u7684OpenVZ\/OVZ\uff08\u65e7\u7248\uff09\u56e0\u4e3a\u5171\u4eab\u5bbf\u4e3b\u673a\u5185\u6838\uff0c\u5f80\u5f80\u65e0\u6cd5\u6ee1\u8db3\u5bb9\u5668\u8fd0\u884c\u6216\u9700\u8981\u670d\u52a1\u5546\u989d\u5916\u5f00\u542f\u529f\u80fd\u3002<\/li>\n<li><strong>\u5185\u6838\u7248\u672c\u4e0e\u914d\u7f6e<\/strong> \u2014 Docker\u5b98\u65b9\u63a8\u8350\u7684\u5185\u6838\u7248\u672c\u901a\u5e38 &gt;= 3.10\uff0c\u5b9e\u9645\u751f\u4ea7\u5e38\u7528\u4e3a4.x\u6216\u66f4\u9ad8\u4ee5\u83b7\u5f97\u66f4\u597d\u6027\u80fd\u548cOverlayFS\u652f\u6301\u3002\u8981\u68c0\u67e5 kernel config \u662f\u5426\u542f\u7528\u4e86 namespaces\u3001cgroups\u3001overlay\u3001aufs\uff08\u53ef\u9009\uff09\u7b49\u3002<\/li>\n<li><strong>cgroups v1 vs v2<\/strong> \u2014 \u65b0\u53d1\u884c\u7248\u53ef\u80fd\u91c7\u7528cgroup v2\uff0c\u90e8\u5206Docker\u7248\u672c\u6216\u5bb9\u5668\u8fd0\u884c\u65f6\u5bf9cgroup v2\u652f\u6301\u5ea6\u4e0d\u540c\u3002\u786e\u8ba4\u7cfb\u7edf\u4e0edocker\u7248\u672c\u7684\u517c\u5bb9\u6027\u975e\u5e38\u91cd\u8981\u3002<\/li>\n<li><strong>\u5185\u6838\u53c2\u6570\u4e0e\u5b89\u5168\u6a21\u5757<\/strong> \u2014 SELinux\/AppArmor\u53ef\u80fd\u5f71\u54cd\u5bb9\u5668\u6743\u9650\uff0ciptables\/nftables \u4e0e\u7f51\u7edc\u6865\u63a5\u9700\u8981\u6b63\u786e\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<h3>\u5feb\u901f\u5224\u65ad\u65b9\u6cd5\uff08\u5b9e\u6d4b\u6b65\u9aa4\uff09<\/h3>\n<ul>\n<li>\u767b\u5f55VPS\uff0c\u8fd0\u884c uname -a \u67e5\u770b\u5185\u6838\u7248\u672c\u3002<\/li>\n<li>\u68c0\u67e5\u865a\u62df\u5316\u7c7b\u578b\uff1asudo systemd-detect-virt \u6216 dmidecode\u3002<\/li>\n<li>\u68c0\u67e5cgroup\u4e0enamespaces\uff1als \/sys\/fs\/cgroup \u6216 grep -i cgroup \/proc\/filesystems\u3002<\/li>\n<li>\u5c1d\u8bd5\u5b89\u88c5Docker Engine\u5e76\u8fd0\u884c hello-world\uff1asudo apt-get install -y docker.io &amp;&amp; sudo docker run &#8211;rm hello-world\u3002<\/li>\n<li>\u82e5\u5931\u8d25\uff0c\u67e5\u770b\u65e5\u5fd7\uff1ajournalctl -u docker \u6216 \/var\/log\/syslog\uff0c\u5206\u6790\u62a5\u9519\uff08\u5982\u65e0\u6cd5\u521b\u5efaoverlay mount\u3001permission denied \u7b49\uff09\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6d4b\u6848\u4f8b\uff1a\u9999\u6e2fVPS\u4e0a\u90e8\u7f72Docker\u7684\u5e38\u89c1\u60c5\u51b5<\/h2>\n<p>\u6211\u4eec\u5728\u4e0d\u540c\u7c7b\u578b\u7684\u9999\u6e2fVPS\u4e0a\u505a\u4e86\u591a\u6b21\u6d4b\u8bd5\uff0c\u8986\u76d6\u4e86KVM\u4e0e\u90e8\u5206\u57fa\u4e8e\u5185\u6838\u5171\u4eab\u7684\u4ea7\u54c1\uff0c\u5f97\u51fa\u5982\u4e0b\u7ecf\u9a8c\u603b\u7ed3\uff08\u6280\u672f\u7ec6\u8282\u57fa\u4e8e\u5e38\u89c1Linux\u53d1\u884c\u7248\uff1aUbuntu\u3001Debian\u3001CentOS\uff09\uff1a<\/p>\n<h3>KVM\u578b\u9999\u6e2fVPS\uff08\u63a8\u8350\uff09<\/h3>\n<p>\u5927\u591a\u6570\u91c7\u7528KVM\u865a\u62df\u5316\u7684\u9999\u6e2fVPS\u53ef\u4ee5\u65e0\u7f1d\u8fd0\u884cDocker\u3002\u5173\u952e\u70b9\uff1a<\/p>\n<ul>\n<li>\u5185\u6838\u901a\u5e38\u72ec\u7acb\uff0c\u5177\u5907\u5b8c\u6574\u7684namespaces\u4e0ecgroups\u652f\u6301\u3002<\/li>\n<li>\u80fd\u591f\u4f7f\u7528OverlayFS\uff08overlay2\uff09\u4f5c\u4e3a\u9ed8\u8ba4\u5b58\u50a8\u9a71\u52a8\uff0c\u6027\u80fd\u4f18\u79c0\u3002<\/li>\n<li>\u53ef\u4ee5\u81ea\u7531\u914d\u7f6e\u5185\u6838\u53c2\u6570\uff08sysctl\uff09\uff0c\u8bbe\u7f6e\u7f51\u7edc\u8f6c\u53d1\uff08net.ipv4.ip_forward=1\uff09\u548c\u6865\u63a5\uff08br-netfilter\uff09\u3002<\/li>\n<li>\u5b9e\u6d4b\u547d\u4ee4\uff1asudo docker info \u8fd4\u56de Storage Driver: overlay2\uff0cCgroup Driver: systemd \u7b49\u5373\u8868\u793a\u8fd0\u884c\u826f\u597d\u3002<\/li>\n<\/ul>\n<h3>OpenVZ\/OVZ \u7c7b\uff08\u9700\u8c28\u614e\uff09<\/h3>\n<p>\u8fd9\u4e9b\u7c7b\u578b\u7684VPS\u82e5\u670d\u52a1\u5546\u6ca1\u6709\u63d0\u4f9b\u9488\u5bf9\u5bb9\u5668\u7684\u5b9a\u5236\u652f\u6301\uff0c\u901a\u5e38\u65e0\u6cd5\u5b89\u88c5\u6216\u8fd0\u884cDocker\uff0c\u5e38\u89c1\u95ee\u9898\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u65e0\u6cd5\u521b\u5efa\u547d\u540d\u7a7a\u95f4\u6216\u6302\u8f7dOverlayFS\u3002<\/li>\n<li>\u9700\u8981\u670d\u52a1\u5546\u5728\u5bbf\u4e3b\u673a\u4e0a\u5f00\u542f\u914d\u7f6e\u9879\u6216\u63d0\u4f9b\u9884\u88c5\u5bb9\u5668\u73af\u5883\uff08LXC\/LXD\uff09\u3002<\/li>\n<\/ul>\n<h3>\u6027\u80fd\u4e0e\u7f51\u7edc\u5b9e\u6d4b\u8981\u70b9<\/h3>\n<ul>\n<li>\u78c1\u76d8I\/O\uff1aSSD \u578b\u76d8\u80fd\u663e\u8457\u63d0\u5347\u5bb9\u5668\u955c\u50cf\u62c9\u53d6\u4e0e\u5199\u5165\u6027\u80fd\u3002\u5bf9\u4e8eIO\u5bc6\u96c6\u578b\u670d\u52a1\uff08\u6570\u636e\u5e93\u3001\u65e5\u5fd7\uff09\u8981\u5173\u6ce8IOPS\u4e0e\u541e\u5410\u3002<\/li>\n<li>\u5e26\u5bbd\u4e0e\u5ef6\u8fdf\uff1a\u9999\u6e2fVPS \u5bf9\u4e8e\u5927\u4e2d\u534e\u533a\u8bbf\u95ee\u5ef6\u8fdf\u8f83\u4f4e\uff0c\u8de8\u5883\uff08\u5982\u7f8e\u56fdVPS\uff09\u5219\u6709\u66f4\u9ad8\u5ef6\u8fdf\uff0c\u4f46\u5229\u4e8e\u56fd\u9645\u51fa\u53e3\u6d41\u91cf\u6216GDPR\/\u5730\u57df\u90e8\u7f72\u7b56\u7565\u3002<\/li>\n<li>MTU \u4e0e\u7f51\u7edc\u6865\u63a5\uff1a\u5bb9\u5668\u7f51\u7edc\u4e2d\u51fa\u73b0\u788e\u7247\u5316\u6216\u4e22\u5305\u65f6\uff0c\u8c03\u6574MTU\uff08\u5c24\u5176\u5728\u4f7f\u7528VPN\u6216\u96a7\u9053\u65f6\uff09\u80fd\u663e\u8457\u6539\u5584\u7a33\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h2>\u90e8\u7f72\u7ec6\u8282\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h2>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u8f83\u4e3a\u5b8c\u6574\u7684Docker\u5728\u9999\u6e2fVPS\u4e0a\u7684\u90e8\u7f72\u6d41\u7a0b\u4e0e\u8c03\u4f18\u5efa\u8bae\uff0c\u9002\u7528\u4e8e\u751f\u4ea7\u73af\u5883\uff1a<\/p>\n<h3>\u5b89\u88c5\u4e0e\u57fa\u7840\u9a8c\u8bc1<\/h3>\n<ul>\n<li>\u66f4\u65b0\u7cfb\u7edf\u5e76\u5b89\u88c5\u4f9d\u8d56\uff1aapt update &amp;&amp; apt upgrade\uff1b\u5b89\u88c5\u5fc5\u8981\u5305\uff1aapt install -y apt-transport-https ca-certificates curl gnupg lsb-release\u3002<\/li>\n<li>\u6dfb\u52a0Docker\u5b98\u65b9\u6e90\u5e76\u5b89\u88c5Docker Engine\u6216\u76f4\u63a5\u4f7f\u7528\u5305\u7ba1\u7406\u5668\u5b89\u88c5docker.io\u3002<\/li>\n<li>\u542f\u52a8\u5e76\u542f\u7528\u670d\u52a1\uff1asudo systemctl enable &#8211;now docker\u3002<\/li>\n<li>\u9a8c\u8bc1\u8fd0\u884c\uff1asudo docker run &#8211;rm hello-world\uff1bsudo docker info \u68c0\u67e5Storage Driver\u3001Cgroup Driver\u3001Kernel Version\u7b49\u3002<\/li>\n<\/ul>\n<h3>\u914d\u7f6e daemon.json \u4e0e\u5b58\u50a8\u9a71\u52a8<\/h3>\n<p>\u5efa\u8bae\u5728 \/etc\/docker\/daemon.json \u4e2d\u8bbe\u7f6e\u5e38\u7528\u914d\u7f6e\uff1a<\/p>\n<ul>\n<li>\u8bbe\u7f6e\u9ed8\u8ba4\u5b58\u50a8\u9a71\u52a8\u4e3aoverlay2\uff08\u82e5\u5185\u6838\u652f\u6301\uff09\uff1a{&#8220;{&#8220;&#8221;}&#8221;}{&#8220;&#8221;storage-driver&#8221;:&#8221;overlay2&#8243;&#8221;}\uff08\u6ce8\u610fJSON\u683c\u5f0f\uff09\u3002<\/li>\n<li>\u914d\u7f6e\u955c\u50cf\u52a0\u901f\u5668\uff08\u82e5\u4f4d\u4e8e\u4e2d\u56fd\u5927\u9646\u6216\u9700\u8981\u52a0\u901f\u62c9\u53d6\u955c\u50cf\uff09\u3002<\/li>\n<li>\u8c03\u6574\u65e5\u5fd7\u7b56\u7565\u4ee5\u9632\u6b62\u78c1\u76d8\u88ab\u65e5\u5fd7\u586b\u6ee1\uff1a{&#8220;{&#8220;&#8221;}&#8221;}{&#8220;&#8221;log-driver&#8221;:&#8221;json-file&#8221;,&#8221;log-opts&#8221;:{&#8220;max-size&#8221;:&#8221;10m&#8221;,&#8221;max-file&#8221;:&#8221;3&#8243;}&#8221;}\u3002<\/li>\n<\/ul>\n<h3>\u8d44\u6e90\u9650\u5236\u4e0e\u8c03\u4f18<\/h3>\n<ul>\n<li>\u4f7f\u7528cgroups\u9650\u5236\u5bb9\u5668\u8d44\u6e90\uff0c\u907f\u514d\u201c\u5355\u5bb9\u5668\u7206\u6389\u6574\u53f0VPS\u201d\uff1adocker run -m 512m &#8211;cpus=0.5\u3002<\/li>\n<li>\u7981\u7528swap\u6216\u5408\u7406\u914d\u7f6e\uff0cDocker\u5728\u542f\u7528swap\u65f6\u884c\u4e3a\u53ef\u80fd\u4e0d\u540c\uff1aswapiness\u3001memory.swappiness\u3002<\/li>\n<li>\u7f51\u7edc\u6027\u80fd\u4f18\u5316\uff1a\u5f00\u542f TCP BBR\uff08\u5982\u679c\u5185\u6838\u652f\u6301\uff09\uff0c\u5e76\u8c03\u6574 net.core.rmem_max\u3001wmem_max\u3002<\/li>\n<\/ul>\n<h3>\u5b89\u5168\u4e0e\u5907\u4efd\u7b56\u7565<\/h3>\n<ul>\n<li>\u907f\u514d\u4ee5root\u7528\u6237\u8fd0\u884c\u5bb9\u5668\uff0c\u4f7f\u7528USER\u6216&#8211;user\u53c2\u6570\u3002<\/li>\n<li>\u542f\u7528\u955c\u50cf\u7b7e\u540d\u3001\u79c1\u6709\u4ed3\u5e93\u4e0eCI\/CD\u6d41\u7a0b\uff0c\u51cf\u5c11\u955c\u50cf\u5b89\u5168\u98ce\u9669\u3002<\/li>\n<li>\u6301\u4e45\u5316\u6570\u636e\u4f7f\u7528\u5377\uff08volumes\uff09\u6216\u7ed1\u5b9a\u6302\u8f7d\uff08bind 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