{"id":521,"date":"2016-08-11T17:54:22","date_gmt":"2016-08-11T09:54:22","guid":{"rendered":"http:\/\/julyclyde.org\/?p=521"},"modified":"2016-08-11T17:54:22","modified_gmt":"2016-08-11T09:54:22","slug":"docker-in-docker%e7%9a%84%e4%b8%80%e4%ba%9b%e6%95%85%e9%9a%9c%e6%a3%80%e6%9f%a5%e8%bf%87%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/julyclyde.org\/?p=521","title":{"rendered":"Docker in docker\u7684\u4e00\u4e9b\u6545\u969c\u68c0\u67e5\u8fc7\u7a0b"},"content":{"rendered":"<h2 id=\"Dockerindocker\u7684\u4e00\u4e9b\u6545\u969c\u68c0\u67e5\u8fc7\u7a0b-\u672f\u8bed\u7ea6\u5b9a\uff1a\">\u672f\u8bed\u7ea6\u5b9a\uff1a<\/h2>\n<ul>\n<li>Host\uff1a\u5916\u5c42\u8fd0\u884c\u64cd\u4f5c\u7cfb\u7edf\u7684\u673a\u5668<\/li>\n<li>\u5916\u5c42daemon\uff1aHost\u4e0a\u7684docker daemon<\/li>\n<li>\u5916\u5c42\u5bb9\u5668\uff1a\u5916\u5c42daemon\u4e0b\u8f96\u7684container\uff0c\u955c\u50cf\u542f\u52a8\u65f6\u52a0\u2013privileged\u53c2\u6570\u3002\u8fd9\u4e2a\u955c\u50cf\u7684\u51c6\u5907\u6b65\u9aa4\u662f\u4ecedocker\u4e0b\u8f7d\u5f53\u524d1.9.1\u7248\u5b89\u88c5\uff08\u5e76\u56fa\u5316\u5230\u955c\u50cf\u91cc\uff09CMD\u662f\u4e00\u4e2a\u811a\u672c\uff0c\u5148\u542f\u52a8\u5e26debug\u9009\u9879\u7684docker daemon \u5e76\u653e\u540e\u53f0\u8fd0\u884c\uff0c\u7136\u540epull\u5e76\u8fd0\u884ccentos:7 \u4e00\u6b21\uff0c\u6700\u540e\u5f00\u542f\u4e00\u4e2a\u4e0d\u505cping\u7684\u547d\u4ee4\uff0c\u4fdd\u6301\u5bb9\u5668\u6301\u7eed\u8fd0\u884c\u3002\u901a\u8fc7docker exec \u8fdb\u5165\u53e6\u884c\u6267\u884cdocker run\u547d\u4ee4\u6d4b\u8bd5\u5185\u5c42\u662f\u5426\u53ef\u4ee5\u6b63\u5e38\u542f\u52a8<\/li>\n<li>\u5185\u5c42daemon\uff1a\u5916\u5c42\u5bb9\u5668\u91cc\u7684docker daemon<\/li>\n<li>\u5185\u5c42\u5bb9\u5668\uff1a\u5185\u5c42daemon\u4e0b\u8f96\u7684container<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>\u5b8b\u4f20\u4e49\u6700\u8fd1\u51e0\u5468\u5728\u5c1d\u8bd5docker in docker\uff0c\u62a5\u544a\u8fc7\u51e0\u4e2a\u95ee\u9898\uff0c\u6211\u5728\u8fd9\u91cc\u7b80\u8981\u8bb0\u5f55\u4e00\u4e0b\u3002\u56e0\u4e3a\u5728\u6b64docker in docker\u7814\u7a76\u8fc7\u7a0b\u4e2d\u6211\u53ea\u662f\u987e\u95ee\u7684\u8eab\u4efd\uff0c\u5e76\u975e\u4e3b\u7814\u4eba\u5458\uff0c\u6240\u4ee5\u8bb0\u8ff0\u5185\u5bb9\u96be\u514d\u6709\u7f3a\u4e4f\u80cc\u666f\u4ecb\u7ecd\u3001\u9636\u6bb5\u9760\u540e\u7b49\u95ee\u9898\u3002\u5b8b\u4f20\u4e49\u62a5\u544a\u7684\u5927\u91cf\u73b0\u8c61\u90fd\u662f\u201c\u6700\u540e\u4e00\u53e5\u9519\u8bef\u4fe1\u606f\u201d\uff0c\u4f46\u6211\u7684\u5de5\u4f5c\u65b9\u5f0f\u662f\u4ece\u201c\u7b2c\u4e00\u6761\u9519\u8bef\u4fe1\u606f\u5f00\u59cb\u770b\u201d\u3002<\/p>\n<h1 id=\"Dockerindocker\u7684\u4e00\u4e9b\u6545\u969c\u68c0\u67e5\u8fc7\u7a0b-\u542f\u52a8\u5185\u5c42dockerdaemon\u65f6\u62a5\u544a\u7f3acgroupmount\">\u542f\u52a8\u5185\u5c42docker daemon\u65f6\u62a5\u544a\u7f3acgroup mount<\/h1>\n<p>\u5b8b\u4f20\u4e49\u62a5\u544a\u57281.9\u4e0a\u53ef\u4ee5\u6210\u529f\u7684\u5728\u5916\u5c42\u5bb9\u5668\u91cc\u8fd0\u884c\u5185\u5c42\u7684docker daemon\uff0c\u4f461.7\u7684\u62a5\u544a\u7f3acgroup mount\u3002\u68c0\u67e5\u53d1\u73b0\uff0cDocker 1.7 \u5e76\u4e0d\u4f1a\u7ed9\u5185\u5c42\u5bb9\u5668 mount \/sys\/fs\/cgroup\/* \u76ee\u5f55\u3002\u53ea\u9700\u8981\u624b\u5de5\u8865mount\u5373\u53ef\u6df7\u8fc7\u53bb\uff0c\u6ee1\u8db3\u542f\u52a8docker daemon\u7684\u9700\u6c42\u3002<\/p>\n<p>\u5728Docker 1.8.0\u7684changelog\u91cc Runtime \u5c0f\u8282\u8bb0\u8ff0\u4e86\u8fd9\u4e2a\u53d8\u52a8\uff1a<\/p>\n<ul>\n<li>Add cgroup bind mount by default<\/li>\n<\/ul>\n<p>\u56e0\u6b641.8.0\u4ee5\u540e\u90fd\u662f\u53ef\u4ee5\u7684\u3002CentOS 7.1.1503 \u65e9\u5148\u7248\u672c\u5e26\u7684\u662f 1.7.1 \u540e\u7eed\u5347\u7ea7\u5230 1.8.2\u3002\u540e\u7ecf\u50ac\u4fc3\uff0c\u516c\u53f8\u5185\u7f51\u7684\u5b89\u88c5\u6e90\u66f4\u65b0\u5230\u65b0\u7248\u672c \u3002<\/p>\n<p>\u4e0d\u8fc71.8.2 RPM\u7684docker-storage-setup\u811a\u672c\u6709\u95ee\u9898\u00a0<a class=\"external-link\" href=\"https:\/\/bugs.centos.org\/view.php?id=9787\" target=\"_blank\" rel=\"nofollow\">https:\/\/bugs.centos.org\/view.php?id=9787<\/a>\u00a0\u5728\u672a\u542f\u7528LVM\u7684\u60c5\u51b5\u4e0b\u4f1a\u76f4\u63a5\u62a5\u9519\u9000\u51fa\uff0c\u65e0\u6cd5\u4ece \/etc\/sysconfig\/docker-storage-setup \u751f\u6210 \/etc\/sysconfig\/docker-storage \u914d\u7f6e\u6587\u4ef6\u3002\u6240\u4ee5\u5efa\u8bae\u624b\u5de5\u7ef4\u6301\u8fd9\u4fe9\u6587\u4ef6\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h1 id=\"Dockerindocker\u7684\u4e00\u4e9b\u6545\u969c\u68c0\u67e5\u8fc7\u7a0b-\u5728\u5916\u5c42\u5bb9\u5668\u91cc\u542f\u52a8\u5185\u5c42\u5bb9\u5668\u65f6\u62a5\u544a\u7f3a\/sys\/fs\/cgroup\/docker.service\">\u5728\u5916\u5c42\u5bb9\u5668\u91cc\u542f\u52a8\u5185\u5c42\u5bb9\u5668\u65f6\u62a5\u544a\u7f3a\/sys\/fs\/cgroup\/docker.service<\/h1>\n<p>\u8fd9\u4e2a\u6545\u969c\uff0c\u5b8b\u4f20\u4e49\u63cf\u8ff0\u4e3a\u201c\u53ea\u6709rz-ep17\u4e0adocker in docker\u8fd0\u884c\u6b63\u5e38\uff0c\u5176\u5b83\u673a\u5668\u5747\u5931\u8d25\u201d\u3002\u6211\u5c1d\u8bd5\u4e86\u4e00\u4e0b\uff0c\u5176\u5b83\u673a\u5668\u4e5f\u4e0d\u662f\u5168\u90fd\u5931\u8d25\uff0c\u53ea\u662f\u5931\u8d25\u6982\u7387\u6781\u9ad8\uff0c\u5076\u5c14\u8fd8\u80fd\u9047\u5230stack overflow\uff1brz-ep17\u4e5f\u4e0d\u662f\u6bcf\u6b21\u90fd\u6210\u529f\uff0c\u4f46\u6210\u529f\u7387\u6781\u9ad8\u3002\u5b8b\u4f20\u4e49\u62a5\u544a\u7684\u6545\u969c\u73b0\u8c61\u4e3a docker run \u5931\u8d25\uff0c\u9519\u8bef\u4fe1\u606f\u4e3a umount shm \u548c umount mqueue\u5931\u8d25\u3002<\/p>\n<p>\u9996\u5148\u53cc\u4eba\u4ea4\u53c9\u68c0\u67e5\u6545\u969c\u673a\u548c\u6b63\u5e38\u673a\u7684\u8f6f\u4ef6\u7248\u672c\uff0c\u53d1\u73b0Host\u5185\u6838\u3001Docker\u5916\u5c42daemon\u7248\u672c\u5747\u7cbe\u786e\u4e00\u81f4\u3001\u547d\u4ee4\u884c\u7cbe\u786e\u4e00\u81f4\uff1b\u5185\u5c42docker\u4e0d\u7ba1\u4ec0\u4e48\u7248\u672c\u90fd\u80fd\u91cd\u73b0\u6545\u969c\u3002\u542c\u8d77\u6765\u4f3c\u4e4e\u662f\u7075\u5f02\u73b0\u8c61\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5c1d\u8bd5\u7528fatrace\u3001inotify-tools\u68c0\u67e5\uff0c\u53d1\u73b0fatrace\u5728\u6253\u5f00fanotify\u4e4b\u540e\uff0cIO\u4e8b\u4ef6\u53d1\u751f\u540e\u5373\u6536\u5230File too large\u9519\u8bef\u4fe1\u606f\u9000\u51fa\uff1b\u800cinotify\u76f4\u63a5\u5c31\u6ca1\u52a8\u9759\u3002\u770b\u8d77\u6765\u8fd9\u4fe9\u5de5\u5177\u8fd8\u4e0d\u517c\u5bb9container\u73af\u5883\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>scytest \u8fd9\u4e2a\u955c\u50cf\u542f\u52a8\u65f6\u4f1a\u5728\u540e\u53f0\u542f\u52a8 start_docker.sh \u5b83\u4f1a\u5728\u540e\u53f0\u8fd0\u884c\u5185\u5c42daemon\u3002<\/p>\n<p>\u5728\u8fd9\u4e2adaemon\u73af\u5883\u4e0b\uff0c\u7528 docker run -ti \u542f\u52a8\u5185\u5c42\u5bb9\u5668\uff0c\u5219\u57fa\u672c\u53ef\u4ee5<strong>\u786e\u4fdd\u635f\u6bc1<\/strong>\u5f53\u524d\u8fd0\u884c\u7684\u5185\u5c42docker daemon\uff0c\u540e\u7eed\u6240\u6709\u6b21\u6570\u542f\u52a8\u5185\u5c42\u5bb9\u5668\u5747\u4f1a\u51fa\u73b0umount shm\u548cumount mqueue\u5931\u8d25\u7684\u95ee\u9898\u3002\u540e\u7eed\u6211\u4eec\u53d1\u73b0\u662f\u4e0a\u6b21daemon\u51fa\u9519\u65f6\u672a\u80fd\u53ca\u65f6umount\u6389device-mapper\u8bbe\u5907\uff0c\u867d\u7136\u4e0b\u6b21daemon\u542f\u52a8\u65f6\u4f1a\u5c1d\u8bd5\u6e05\u7406\uff0c\u4f46\u8fd8\u662f\u6ca1\u6e05\u7406\u5e72\u51c0\u3002\u624b\u5de5umount\u6389\/var\/lib\/docker\/container\/***ID***\/{shm,mqueue} \u5373\u53ef\u4fee\u590d\u3002\u671f\u95f4\u8fd8\u5c1d\u8bd5\u5728<strong>\u5916\u5c42\u5bb9\u5668\u91cc\u6267\u884cdmsetup remove_all \u7ed3\u679c\u53d1\u73b0\u5220\u9664\u4e86\u5bb9\u5668\u91cc\u7684device mapper\u4e4b\u540e\uff0cHost\u7684device mapper\u8bbe\u5907\u8282\u70b9\u6f0f\u8fdb\u6765\u4e86<\/strong>\uff0c\u662f\u4e2a\u5b89\u5168\u9690\u60a3\u3002<\/p>\n<p>\u5728\u8fd9\u4e2adaemon\u73af\u5883\u4e0b\uff0c\u7528 docker run -d \u542f\u52a8\u5185\u5c42\u5bb9\u5668\u5219\u5927\u6982\u7387\u4f1a\u6210\u529f\u3002<\/p>\n<p>\u5982\u679ckill\u6389start_docker.sh\u542f\u52a8\u7684docker daemon\uff0c\u624b\u5de5\u5728docker exec bash\u7684\u547d\u4ee4\u884c\u4e0a\u53e6\u542f\u52a8\u4e00\u4e2adaemon\uff0c\u5219\u4e00\u5b9a\u51fa\/sys\/fs\/cgroup\/docker.service\u7684\u95ee\u9898\u3002<\/p>\n<p>\u4e8e\u662f\u95ee\u9898\u9010\u6e10\u6e05\u6670\u8d77\u6765\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u9519\u8bef\u4fe1\u606f\u7684\u6587\u4ef6\u540d docker.service \u770b\u8d77\u6765\u201c\u6bd4\u8f83\u50cfsystemd\u7684\u547d\u540d\u98ce\u683c\u201d\uff0c\u6240\u4ee5\u6211\u627e\u4e86\u4e00\u4e0b\uff0c\u53d1\u73b0\u5728Host\u7684cgroup\u76ee\u5f55\u91cc \/sys\/fs\/cgroup\/systemd.slice\/\u6709\u4e2adocker.service\u76ee\u5f55\uff0c\u4f46\u5916\u5c42\u5bb9\u5668\u5185\u7684cgroup\u5e76\u6ca1\u6709\u8fd9\u4e2a\u3002<\/p>\n<p>\u641c\u6e90\u4ee3\u7801\u4e5f\u641c\u4e0d\u5230docker.service \u8fd9\u4e2a\u5b57\u7b26\u4e32\uff0c\u4e8e\u662f\u53ea\u80fd\u5224\u5b9a\u4e3a\u8be5\u8def\u5f84\u662f\u4ece\u5916\u90e8\u83b7\u53d6\u5e76\u62fc\u88c5\u8d77\u6765\u7684\u3002\u8003\u8651\u5230\u547d\u4ee4\u884c\u7cbe\u786e\u4e00\u81f4\uff0c\u6211\u53c8\u53bb\u770b\u4e86\u770b\u73af\u5883\u53d8\u91cf\uff0c\u4e5f\u6ca1\u6709\u53d1\u73b0\u76f8\u5173\u5185\u5bb9\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u51dd\u795e\u5b9a\u5fd7\uff0c\u7528\u91cd\u91cf\u7ea7\u6b66\u5668strace -f \u8ddf\u8e2a\u5185\u5c42docker daemon\uff0c\u8bb0\u5f55\u4e0b\u5176\u6587\u4ef6\u8bbf\u95ee\u884c\u4e3a\uff0c\u5e76\u6bd4\u5bf9\u9519\u8bef\u4fe1\u606f\uff0c\u53ef\u4ee5\u6e05\u6670\u7684\u770b\u5230\u51c6\u5907\u5bb9\u5668\u6587\u4ef6\u7cfb\u7edf\u5185\u5bb9\u3001mount\u3001\u51c6\u5907\u5bb9\u5668\u7684cgroup\u73af\u5883\u3001\u8fd0\u884c\u7a0b\u5e8f\u3001\u5931\u8d25\u3001\u6e05\u7406\u73b0\u573a\u7684\u8fc7\u7a0b\uff0c\u800c\u4e14\u53d1\u73b0\u5bf9 \/sys\/fs\/cgroup\/docker.service \u7684\u8bbf\u95ee\u662f\u7531 \u5185\u5c42daemon\u8c03\u7528native exec driver \u6267\u884c\u7684\uff0c\u8fd8\u672a\u8fd0\u884c\u5230\u542f\u52a8\u5bb9\u5668\u5185\u7a0b\u5e8f\u7684\u6b65\u9aa4\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8bbf\u95ee\u7684\u662f \u5916\u5c42\u5bb9\u5668\u5185\u7684\/sys\/fs\/cgroup\/docker.service \u800c\u4e0d\u662f \u5185\u5c42\u5bb9\u5668\u5185\u7684\u8be5\u6587\u4ef6\u3002native exec driver\u76ee\u524d\u662flibcontainer\/runc\u7684\u4e00\u90e8\u5206\u3002\u6211\u53bbGitHub\u641c\u6e90\u7801\uff0c\u5076\u5c14\u770b\u5230\u5728<a class=\"external-link\" href=\"https:\/\/github.com\/opencontainers\/runc\/blob\/3317785f562b363eb386a2fa4909a55f267088c8\/libcontainer\/cgroups\/utils.go\" target=\"_blank\" rel=\"nofollow\">https:\/\/github.com\/opencontainers\/runc\/blob\/3317785f562b363eb386a2fa4909a55f267088c8\/libcontainer\/cgroups\/utils.go<\/a>\u00a0\u4e2d\u6709\u5206\u522b\u8bfb \/proc\/1\/cgroup \u548c\/proc\/self\/cgroup \u7684\u4e24\u4e2a\u51fd\u6570\uff0c\u987f\u65f6\u654f\u611f\u7684\u610f\u8bc6\u5230root cause\u5c31\u5728\u8fd9\u91cc\u3002\u6211\u8d76\u7d27\u53bb\u6838\u5bf9\uff0c\u53d1\u73b0 \u4eceCMD\/ENTRYPOINT\u542f\u52a8\u7684start_docker.sh\u53ca\u5176\u5b50\u8fdb\u7a0bdocker daemon\u3001\u5b50\u8fdb\u7a0bping\u7684\/proc\/&lt;PID&gt;\/cgroup\u5185\u5bb9\u6700\u540e\u4e00\u884c\uff0c\u548c\u624b\u5de5docker exec \u8fdb\u53bb\u6267\u884c\u7684\u6240\u6709\u547d\u4ee4\u7684\u8be5\u6587\u4ef6\u7684\u6700\u540e\u4e00\u884c\u5185\u5bb9\u4e0d\u540c\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-522\" src=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-8-40-34-1024x472.png\" alt=\"image2015-12-4 8-40-34\" width=\"640\" height=\"295\" srcset=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-8-40-34-1024x472.png 1024w, https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-8-40-34-300x138.png 300w, https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-8-40-34-768x354.png 768w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>\u4e0a\u8ff0\u8def\u5f84\u524d\u9762\u62fc\u4e0a\/sys\/fs\/cgroup\/systemd\/\u5373\u4e3aHost\u4e0a\u7684\u8def\u5f84\u3002<\/p>\n<p>\u770b\u8d77\u6765\u5e94\u8be5\u662f\u7531\u4e8edocker run\u8bbe\u7f6e\u4e86\u5bb9\u5668\u7684cgroup\u73af\u5883\uff0c\u6240\u4ee5\u5bb9\u5668\u5185\u539f\u751f\u7684\u8fdb\u7a0b\u90fd\u57fa\u7840\u6b64\u8bbe\u7f6e\uff1b\u800cdocker exec\u6ca1\u6709\u8fd9\u4e2a\u521d\u59cb\u5316\u8fc7\u7a0b\uff0c\u53ea\u662f\u76f4\u63a5\u9001\u4e00\u4e2a\u8fdb\u7a0b\u5728\u5bb9\u5668\u91cc\u6267\u884c\uff0c\u6240\u4ee5\u4e0d\u540c\u3002<\/p>\n<p>\u6839\u636e\u8fd9\u4e2a\u7ed3\u8bba\uff0c\u5b8b\u4f20\u4e49\u8fdb\u884c\u4e86\u56de\u5f52\u6d4b\u8bd5\uff0c\u7ec8\u4e8e\u53ef\u4ee5100%\u91cd\u73b0\u5931\u8d25\u8fc7\u7a0b\uff0c\u8fd1100%\u91cd\u73b0\u6210\u529f\u8fc7\u7a0b\uff08\u90e8\u5206\u5931\u8d25\u7531\u4e8e\u4ee3\u7801\u8d28\u91cf\u5f15\u8d77stackoverflow\uff09<\/p>\n<h1 id=\"Dockerindocker\u7684\u4e00\u4e9b\u6545\u969c\u68c0\u67e5\u8fc7\u7a0b-\u542f\u52a8\u5185\u5c42\u5bb9\u5668\u65f6\u62a5\u544a\u7f3a\/sys\/fs\/docker-daemon\">\u542f\u52a8\u5185\u5c42\u5bb9\u5668\u65f6\u62a5\u544a\u7f3a\/sys\/fs\/docker-daemon<\/h1>\n<p>\u9519\u8bef\u4fe1\u606f\u00a0Error response from daemon: Cannot start container 8aa10e0596282a11b7d841f25355426e9a5e395cb980cf66ec89c9d1a439ae4d: [8] System error: mkdir \/sys\/fs\/docker-daemon: no such file or directory<\/p>\n<p>\u548c\u4e0a\u9762\u90a3\u4e2a\u6545\u969c\u76f8\u5173<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-523\" src=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-11-53-53.png\" alt=\"image2015-12-4 11-53-53\" width=\"890\" height=\"540\" srcset=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-11-53-53.png 890w, https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-11-53-53-300x182.png 300w, https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-11-53-53-768x466.png 768w\" sizes=\"auto, (max-width: 890px) 100vw, 890px\" \/><\/p>\n<p>\u4f46\u56e0\u4e3amkdir: cannot create directory &#8216;\/sys\/fs\/docker-daemon&#8217;: No such file or directory \uff08\/sys\/fs\/ \u4e0d\u662f\u4e00\u4e2atmpfs\u800c\u662f\/sys\/\u7684\u4e00\u90e8\u5206\uff1b\u5bf9\u6bd4\/sys\/fs\/cgroup\/ \u662f\u4e2atmpfs\u53ef\u4ee5\u968f\u4fbf\u5199\u5165\uff09\u6240\u4ee5\u6b64\u95ee\u9898\u65e0\u89e3<\/p>\n<p>\u5947\u602a\u7684\u662f\uff0c\u6211\u624b\u5de5\u542f\u52a8\u4e00\u4e2a daemon \u5176\u72b6\u6001\u5982\u4e0b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-524\" src=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-12-2-14.png\" alt=\"image2015-12-4 12-2-14\" width=\"750\" height=\"191\" srcset=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-12-2-14.png 750w, https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-12-2-14-300x76.png 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>\u7ed3\u679c\u4e00\u6837\uff0c\u8fd8\u662f\u51fadocker-daemon\u76ee\u5f55\u7684\u9519\u8bef\u3002<\/p>\n<p>\u53ef\u80fd\u8fd9\u5c31\u662f\u5b8b\u4f20\u4e49\u5728CMD docker daemon\u548cEXEC docker daemon\u4e4b\u95f4\u6765\u56de\u5207\u6362\u7684\u539f\u56e0\u5427\uff1f<\/p>\n<p>&nbsp;<\/p>\n<p>\u91cd\u542frz-ep16\uff0c\u7136\u540e\u67e5\u770b\uff0cHost\u4e0adocker\u670d\u52a1\u521a\u542f\u52a8\u65f6cgroup\u4e3a<\/p>\n<p>10:hugetlb:\/<br \/>\n9:perf_event:\/<br \/>\n8:blkio:\/<br \/>\n7:net_cls:\/<br \/>\n6:freezer:\/<br \/>\n5:devices:\/<br \/>\n4:memory:\/<br \/>\n3:cpuacct,cpu:\/<br \/>\n2:cpuset:\/<br \/>\n1:name=<a class=\"external-link\" href=\"http:\/\/systemd\/system.slice\/docker.service\" target=\"_blank\" rel=\"nofollow\">systemd:\/system.slice\/docker.service<\/a><\/p>\n<p>\u542f\u52a8\u4e00\u4e2a\u2013privileged\u5bb9\u5668\u4e4b\u540e\u53d8\u6210<\/p>\n<p>10:hugetlb:\/<br \/>\n9:perf_event:\/<br \/>\n8:<a class=\"external-link\" href=\"http:\/\/blkio\/system.slice\/docker.service\" target=\"_blank\" rel=\"nofollow\">blkio:\/system.slice\/docker.service<\/a><br \/>\n7:net_cls:\/<br \/>\n6:freezer:\/<br \/>\n5:<a class=\"external-link\" href=\"http:\/\/devices\/system.slice\" target=\"_blank\" rel=\"nofollow\">devices:\/system.slice<\/a><br \/>\n4:<a class=\"external-link\" href=\"http:\/\/memory\/system.slice\" target=\"_blank\" rel=\"nofollow\">memory:\/system.slice<\/a><br \/>\n3:cpuacct,<a class=\"external-link\" href=\"http:\/\/cpu\/system.slice\/docker.service\" target=\"_blank\" rel=\"nofollow\">cpu:\/system.slice\/docker.service<\/a><br \/>\n2:cpuset:\/<br \/>\n1:name=<a class=\"external-link\" href=\"http:\/\/systemd\/system.slice\/docker.service\" target=\"_blank\" rel=\"nofollow\">systemd:\/system.slice\/docker.service<\/a><\/p>\n<p>\u8fd9\u4e2a\u770b\u8d77\u6765\u548c\u4e00\u76f4\u4f1f\u5149\u6b63\u7684rz-ep17\u76f8\u540c\uff0c\u4e14\u968f\u540e\u7684\u5b9e\u9a8c\u90fd\u5b8c\u5168\u6210\u529f\u3002<\/p>\n<p>\u7ecf\u5b9e\u9a8c\uff0c\u53d1\u73b0docker\u88abkubelet\u4f9d\u8d56\u542f\u52a8\u7684\u65f6\u5019\uff0c\/proc\/&lt;PID&gt;\/cgroup \u6587\u4ef6\u4e2dperf_event\u3001freezer\u3001cpuset\u4e09\u884c\u4f1a\u662f\/docker-daemon\uff1bdocker\u72ec\u7acb\u542f\u52a8\u65f6\u5219\u4e3a\/ \u8fd9\u6837\u7684\u6b63\u786e\u5185\u5bb9\u3002\u4f46\u8fd9\u4fe9\u670d\u52a1\u6709\u5f3a\u5173\u8054\uff1asystemctl restart docker\u91cd\u542f\u8fd8\u662f\u9519\u8bef\u5185\u5bb9\uff1bsystemctl stop\u518dstart docker\u6210\u529f\uff0c\u4f46\u4f1a\u5bfc\u81f4kubelet\u670d\u52a1\u505c\u6b62\u3002<\/p>\n<h1 id=\"Dockerindocker\u7684\u4e00\u4e9b\u6545\u969c\u68c0\u67e5\u8fc7\u7a0b-\u5916\u5c42\u5bb9\u5668\u9996\u6b21yum\u4f1a\u5931\u8d25\">\u5916\u5c42\u5bb9\u5668\u9996\u6b21yum\u4f1a\u5931\u8d25<\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-525\" src=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-12-41-40.png\" alt=\"image2015-12-4 12-41-40\" width=\"699\" height=\"546\" srcset=\"https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-12-41-40.png 699w, https:\/\/julyclyde.org\/wordpress\/wp-content\/uploads\/2016\/08\/image2015-12-4-12-41-40-300x234.png 300w\" sizes=\"auto, (max-width: 699px) 100vw, 699px\" \/><\/p>\n<p>\u7a33\u5b9a\u91cd\u73b0\uff0c\u539f\u56e0\u4e0d\u660e\u3002\u7b2c\u4e8c\u6b21\u5c31\u6ca1\u4e8b\u4e86<\/p>\n<h1 id=\"Dockerindocker\u7684\u4e00\u4e9b\u6545\u969c\u68c0\u67e5\u8fc7\u7a0b-\u7ed3\u8bba\">\u7ed3\u8bba<\/h1>\n<ul>\n<li><strong>\u770b\u9519\u8bef\u4fe1\u606f\u8981\u770b\u7b2c\u4e00\u6761\uff0c\u800c\u4e0d\u662f\u6700\u540e\u4e00\u6761<\/strong><\/li>\n<li><strong>\u8fd0\u7ef4\u76f8\u5173\u5de5\u5177\u662f\u68c0\u67e5\u4e0d\u719f\u6089\u7a0b\u5e8f\u7684\u884c\u4e3a\u7684\u5229\u5668<\/strong><\/li>\n<li>\u5bb9\u5668\u5185\u548c\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u7684\u8fd0\u884c\u73af\u5883\u5dee\u5f02\u8f83\u5927\uff0c\u9664\u4e86fatrace\\inotify\u5931\u8d25\uff0c\u4ee5\u540e\u53ef\u80fd\u8fd8\u4f1a\u906d\u9047\u5176\u5b83\u517c\u5bb9\u6027\u95ee\u9898<\/li>\n<li>Docker\u7684\u5751\u8fd8\u5f88\u591a\uff0c\u5c1a\u5904\u4e8e\u521d\u671f\u5f00\u53d1\u9636\u6bb5\uff0c\u53d8\u52a8\u5f88\u5927\uff0c\u8d28\u91cf\u8f83\u5dee<\/li>\n<li>\u6211\u4eec\u5bf9 cgroup \u7684\u8ba4\u8bc6\u8fd8\u592a\u7c97\u6d45<\/li>\n<li>\u6211\u4eec\u5bf9devicemapper\u5b8c\u5168\u65e0\u8ba4\u77e5<\/li>\n<li>\u7f16\u8bd1\u578b\u8bed\u8a00\u8c03\u8bd5\u6bd4\u8f83\u56f0\u96be<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u672f\u8bed\u7ea6\u5b9a\uff1a Host\uff1a\u5916\u5c42\u8fd0\u884c\u64cd\u4f5c\u7cfb\u7edf\u7684\u673a\u5668 \u5916\u5c42daemon\uff1aHost\u4e0a\u7684docker daemon \u5916\u5c42\u5bb9\u5668\uff1a\u5916\u5c42daemon\u4e0b\u8f96\u7684container\uff0c\u955c\u50cf\u542f\u52a8\u65f6\u52a0\u2013privileged\u53c2\u6570\u3002\u8fd9\u4e2a\u955c\u50cf\u7684\u51c6\u5907\u6b65\u9aa4\u662f\u4ecedocker\u4e0b\u8f7d\u5f53\u524d1.9.1\u7248\u5b89\u88c5\uff08\u5e76\u56fa\u5316\u5230\u955c\u50cf\u91cc\uff09CMD\u662f\u4e00\u4e2a\u811a\u672c\uff0c\u5148\u542f\u52a8\u5e26debug\u9009\u9879\u7684docker daemon \u5e76\u653e\u540e\u53f0\u8fd0\u884c\uff0c\u7136\u540epull\u5e76\u8fd0\u884ccentos:7 \u4e00\u6b21\uff0c\u6700\u540e\u5f00\u542f\u4e00\u4e2a\u4e0d\u505cping\u7684\u547d\u4ee4\uff0c\u4fdd\u6301\u5bb9\u5668\u6301\u7eed\u8fd0\u884c\u3002\u901a\u8fc7docker exec \u8fdb\u5165\u53e6\u884c\u6267\u884cdocker run\u547d\u4ee4\u6d4b\u8bd5\u5185\u5c42\u662f\u5426\u53ef\u4ee5\u6b63\u5e38\u542f\u52a8 \u5185\u5c42daemon\uff1a\u5916\u5c42\u5bb9\u5668\u91cc\u7684docker daemon \u5185\u5c42\u5bb9\u5668\uff1a\u5185\u5c42daemon\u4e0b\u8f96\u7684container &nbsp; \u5b8b\u4f20\u4e49\u6700\u8fd1\u51e0\u5468\u5728\u5c1d\u8bd5docker in docker\uff0c\u62a5\u544a\u8fc7\u51e0\u4e2a\u95ee\u9898\uff0c\u6211\u5728\u8fd9\u91cc\u7b80\u8981\u8bb0\u5f55\u4e00\u4e0b\u3002\u56e0\u4e3a\u5728\u6b64docker in docker\u7814\u7a76\u8fc7\u7a0b\u4e2d\u6211\u53ea\u662f\u987e\u95ee\u7684\u8eab\u4efd\uff0c\u5e76\u975e\u4e3b\u7814\u4eba\u5458\uff0c\u6240\u4ee5\u8bb0\u8ff0\u5185\u5bb9\u96be\u514d\u6709\u7f3a\u4e4f\u80cc\u666f\u4ecb\u7ecd\u3001\u9636\u6bb5\u9760\u540e\u7b49\u95ee\u9898\u3002\u5b8b\u4f20\u4e49\u62a5\u544a\u7684\u5927\u91cf\u73b0\u8c61\u90fd\u662f\u201c\u6700\u540e\u4e00\u53e5\u9519\u8bef\u4fe1\u606f\u201d\uff0c\u4f46\u6211\u7684\u5de5\u4f5c\u65b9\u5f0f\u662f\u4ece\u201c\u7b2c\u4e00\u6761\u9519\u8bef\u4fe1\u606f\u5f00\u59cb\u770b\u201d\u3002 \u542f\u52a8\u5185\u5c42docker daemon\u65f6\u62a5\u544a\u7f3acgroup mount \u5b8b\u4f20\u4e49\u62a5\u544a\u57281.9\u4e0a\u53ef\u4ee5\u6210\u529f\u7684\u5728\u5916\u5c42\u5bb9\u5668\u91cc\u8fd0\u884c\u5185\u5c42\u7684docker daemon\uff0c\u4f461.7\u7684\u62a5\u544a\u7f3acgroup mount\u3002\u68c0\u67e5\u53d1\u73b0\uff0cDocker 1.7 \u5e76\u4e0d\u4f1a\u7ed9\u5185\u5c42\u5bb9\u5668 mount \/sys\/fs\/cgroup\/* \u76ee\u5f55\u3002\u53ea\u9700\u8981\u624b\u5de5\u8865mount\u5373\u53ef\u6df7\u8fc7\u53bb\uff0c\u6ee1\u8db3\u542f\u52a8docker daemon\u7684\u9700\u6c42\u3002 \u5728Docker 1.8.0\u7684changelog\u91cc Runtime \u5c0f\u8282\u8bb0\u8ff0\u4e86\u8fd9\u4e2a\u53d8\u52a8\uff1a Add cgroup bind mount &hellip; <a href=\"https:\/\/julyclyde.org\/?p=521\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[64,63],"class_list":["post-521","post","type-post","status-publish","format-standard","hentry","category-default","tag-cgroups","tag-docker"],"_links":{"self":[{"href":"https:\/\/julyclyde.org\/index.php?rest_route=\/wp\/v2\/posts\/521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/julyclyde.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/julyclyde.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/julyclyde.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/julyclyde.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=521"}],"version-history":[{"count":0,"href":"https:\/\/julyclyde.org\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"wp:attachment":[{"href":"https:\/\/julyclyde.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/julyclyde.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/julyclyde.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}