{"id":5461,"date":"2021-01-03T15:04:40","date_gmt":"2021-01-03T07:04:40","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5461"},"modified":"2022-03-19T02:02:20","modified_gmt":"2022-03-18T18:02:20","slug":"docker-%e4%b9%8b-namespace-%e8%b5%84%e6%ba%90%e9%9a%94%e7%a6%bb","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5461","title":{"rendered":"Docker \u4e4b Namespace \u8d44\u6e90\u9694\u79bb"},"content":{"rendered":"<section data-mpa-powered-by=\\\"yiban.io\\\"><strong>\u00a0 \u4ec0\u4e48\u662f Namespace\u00a0\u00a0<\/strong><\/section>\n<section data-mpa-powered-by=\\\"yiban.io\\\"><\/section>\n<section>Namespace \u662f Linux \u5185\u6838\u7684\u4e00\u9879\u529f\u80fd\uff0c\u8be5\u529f\u80fd\u5bf9\u5185\u6838\u8d44\u6e90\u8fdb\u884c\u5206\u533a\uff0c\u4ee5\u4f7f\u4e00\u7ec4\u8fdb\u7a0b\u770b\u5230\u4e00\u7ec4\u8d44\u6e90\uff0c\u800c\u53e6\u4e00\u7ec4\u8fdb\u7a0b\u770b\u5230\u53e6\u4e00\u7ec4\u8d44\u6e90\u3002Namespace \u7684\u5de5\u4f5c\u65b9\u5f0f\u901a\u8fc7\u4e3a\u4e00\u7ec4\u8d44\u6e90\u548c\u8fdb\u7a0b\u8bbe\u7f6e\u76f8\u540c\u7684 Namespace \u800c\u8d77\u4f5c\u7528\uff0c\u4f46\u662f\u8fd9\u4e9b Namespace \u5f15\u7528\u4e86\u4e0d\u540c\u7684\u8d44\u6e90\u3002\u8d44\u6e90\u53ef\u80fd\u5b58\u5728\u4e8e\u591a\u4e2a Namespace \u4e2d\u3002\u8fd9\u4e9b\u8d44\u6e90\u53ef\u4ee5\u662f\u8fdb\u7a0b ID\u3001\u4e3b\u673a\u540d\u3001\u7528\u6237 ID\u3001\u6587\u4ef6\u540d\u3001\u4e0e\u7f51\u7edc\u8bbf\u95ee\u76f8\u5173\u7684\u540d\u79f0\u548c\u8fdb\u7a0b\u95f4\u901a\u4fe1\u3002<\/section>\n<section><\/section>\n<section>Namespace \u662f Linux \u5185\u6838\u7684\u4e00\u4e2a\u7279\u6027\uff0c\u8be5\u7279\u6027\u53ef\u4ee5\u5b9e\u73b0\u5728\u540c\u4e00\u4e3b\u673a\u7cfb\u7edf\u4e2d\uff0c\u5bf9\u8fdb\u7a0b ID\u3001\u4e3b\u673a\u540d\u3001\u7528\u6237 ID\u3001\u6587\u4ef6\u540d\u3001\u7f51\u7edc\u548c\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7b49\u8d44\u6e90\u7684\u9694\u79bb\u3002Docker \u5229\u7528 Linux \u5185\u6838\u7684 Namespace \u7279\u6027\uff0c\u5b9e\u73b0\u4e86\u6bcf\u4e2a\u5bb9\u5668\u7684\u8d44\u6e90\u76f8\u4e92\u9694\u79bb\uff0c\u4ece\u800c\u4fdd\u8bc1\u5bb9\u5668\u5185\u90e8\u53ea\u80fd\u8bbf\u95ee\u5230\u81ea\u5df1 Namespace \u7684\u8d44\u6e90\u3002<\/section>\n<section>\u6700\u65b0\u7684 Linux 5.6 \u5185\u6838\u4e2d\u63d0\u4f9b\u4e86 8 \u79cd\u7c7b\u578b\u7684 Namespace\uff1a<\/section>\n<table>\n<tbody>\n<tr class=\\\"ue-table-interlace-color-single\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\"><strong>Namespace\u540d\u79f0<br \/>\n<\/strong><\/td>\n<td valign=\\\"top\\\" width=\\\"198\\\"><strong>\u9694\u79bb\u5185\u5bb9<br \/>\n<\/strong><\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\"><strong>\u5185\u6838\u7248\u672c<br \/>\n<\/strong><\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-double\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">mount\uff08mnt\uff09<\/td>\n<td valign=\\\"top\\\" width=\\\"200\\\">\u9694\u79bb\u6302\u8f7d\u70b9\uff08\u6587\u4ef6\u7cfb\u7edf\uff09<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">2.4.19<\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-single\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">Process\u00a0ID\u00a0\uff08PID\uff09<\/td>\n<td valign=\\\"top\\\" width=\\\"200\\\">\u9694\u79bb\u8fdb\u7a0b ID<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">2.6.24<\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-double\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">Network (net)<\/td>\n<td valign=\\\"top\\\" width=\\\"200\\\">\u9694\u79bb\u7f51\u7edc\u8bbe\u5907\u3001\u7f51\u7edc\u6808\u3001\u7aef\u53e3\u53f7\u7b49<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">2.6.29<\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-single\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">Interprocess Communication (IPC)<\/td>\n<td valign=\\\"top\\\" width=\\\"200\\\">\u9694\u79bb\u4fe1\u53f7\u91cf\u3001\u6d88\u606f\u961f\u5217\u548c\u5171\u4eab\u5185\u5b58<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">2.6.19<\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-double\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">UTS Namespace(UTS)<\/td>\n<td valign=\\\"top\\\" width=\\\"200\\\">\u9694\u79bb\u4e3b\u673a\u540d\u548c\u57df\u540d<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">2.6.19<\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-single\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">User Namespace (user)<\/td>\n<td valign=\\\"top\\\" width=\\\"200\\\">\u9694\u79bb\u7528\u6237\u548c\u7528\u6237\u7ec4<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">3.8<\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-double\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">Control groupNamespace\u00a0(Cgroup)<\/td>\n<td valign=\\\"top\\\" width=\\\"200\\\">\u9694\u79bb Cgroups \u6839\u76ee\u5f55<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">4.6<\/td>\n<\/tr>\n<tr class=\\\"ue-table-interlace-color-single\\\">\n<td valign=\\\"top\\\" width=\\\"208\\\">Time Namespace<\/td>\n<td valign=\\\"top\\\" width=\\\"198\\\">\u9694\u79bb\u7cfb\u7edf\u65f6\u95f4<\/td>\n<td valign=\\\"top\\\" width=\\\"99\\\">5.6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<section>Linux \u5185\u6838\u63d0\u4f9b\u4e868\u79cd Namespace\uff0c\u76ee\u524d Docker \u53ea\u4f7f\u7528\u4e86\u5176\u4e2d\u7684\u524d6 \u79cd\uff0c\u5206\u522b\u4e3aMount Namespace\u3001PID Namespace\u3001Net Namespace\u3001IPC Namespace\u3001UTS Namespace\u3001User Namespace\u3002<\/section>\n<section><\/section>\n<section><strong>Docker \u4e3a\u4ec0\u4e48\u9700\u8981 Namespace\u00a0<\/strong><\/section>\n<section><\/section>\n<section>Linux \u5185\u6838\u4ece 2002 \u5e74 2.4.19 \u7248\u672c\u5f00\u59cb\u52a0\u5165\u4e86 Mount Namespace\uff0c\u800c\u76f4\u5230\u5185\u6838 3.8 \u7248\u672c\u52a0\u5165\u4e86 User Namespace \u624d\u4e3a\u5bb9\u5668\u63d0\u4f9b\u4e86\u8db3\u591f\u7684\u652f\u6301\u529f\u80fd\u3002<\/section>\n<section><\/section>\n<section>\u5f53 Docker \u65b0\u5efa\u4e00\u4e2a\u5bb9\u5668\u65f6\u4f1a\u521b\u5efa\u8fd9\u516d\u79cd Namespace\uff0c\u7136\u540e\u5c06\u5bb9\u5668\u4e2d\u7684\u8fdb\u7a0b\u52a0\u5165\u8fd9\u4e9b Namespace \u4e4b\u4e2d\uff0c\u4f7f\u5f97 Docker \u5bb9\u5668\u4e2d\u7684\u8fdb\u7a0b\u53ea\u80fd\u770b\u5230\u5f53\u524d Namespace \u4e2d\u7684\u7cfb\u7edf\u8d44\u6e90\u3002<\/section>\n<section><\/section>\n<section>\u6b63\u662f\u7531\u4e8e Docker \u4f7f\u7528\u4e86 Linux \u7684\u8fd9\u4e9b Namespace \u6280\u672f\uff0c\u624d\u5b9e\u73b0\u4e86 Docker \u5bb9\u5668\u7684\u9694\u79bb\uff0c\u53ef\u4ee5\u8bf4\u6ca1\u6709 Namespace\uff0c\u5c31\u6ca1\u6709 Docker \u5bb9\u5668\u3002<\/section>\n<section><\/section>\n<section><\/section>\n<section>\u76ee\u524d Docker \u4f7f\u7528\u7684 6 \u79cd Namespace \u7684\u4f5c\u7528\u5206\u522b\u662f\u4ec0\u4e48\u3002\u901a\u8fc7\u4e00\u4e2a\u547d\u4ee4\u884c\u5de5\u5177 unshare\u6765\u6f14\u793a\u64cd\u4f5c\u3002unshare \u662f util-linux \u5de5\u5177\u5305\u4e2d\u7684\u4e00\u4e2a\u5de5\u5177\uff0cCentOS 7 \u7cfb\u7edf\u9ed8\u8ba4\u5df2\u7ecf\u96c6\u6210\u4e86\u8be5\u5de5\u5177\uff0c\u4f7f\u7528 unshare \u547d\u4ee4\u53ef\u4ee5\u5b9e\u73b0\u521b\u5efa\u5e76\u8bbf\u95ee\u4e0d\u540c\u7c7b\u578b\u7684 Namespace\u3002<\/section>\n<p><strong>\uff081\uff09Mount Namespace\u00a0<\/strong><\/p>\n<section><\/section>\n<section>Mount Namespace \u662f Linux \u5185\u6838\u5b9e\u73b0\u7684\u7b2c\u4e00\u4e2a Namespace\uff0c\u4ece\u5185\u6838\u7684 2.4.19 \u7248\u672c\u5f00\u59cb\u52a0\u5165\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u9694\u79bb\u4e0d\u540c\u7684\u8fdb\u7a0b\u6216\u8fdb\u7a0b\u7ec4\u770b\u5230\u7684\u6302\u8f7d\u70b9\u3002\u53ef\u4ee5\u5b9e\u73b0\u5728\u4e0d\u540c\u7684\u8fdb\u7a0b\u4e2d\u770b\u5230\u4e0d\u540c\u7684\u6302\u8f7d\u76ee\u5f55\u3002\u4f7f\u7528 Mount Namespace \u53ef\u4ee5\u5b9e\u73b0\u5bb9\u5668\u5185\u53ea\u80fd\u770b\u5230\u81ea\u5df1\u7684\u6302\u8f7d\u4fe1\u606f\uff0c\u5728\u5bb9\u5668\u5185\u7684\u6302\u8f7d\u64cd\u4f5c\u4e0d\u4f1a\u5f71\u54cd\u4e3b\u673a\u7684\u6302\u8f7d\u76ee\u5f55\u3002<\/section>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a bash \u8fdb\u7a0b\u5e76\u4e14\u65b0\u5efa\u4e00\u4e2a mount Namespace\uff1a<\/p>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"perl\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# unshare\u00a0--mount\u00a0--fork\u00a0\/bin\/bash<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u6267\u884c\u5b8c\u4e0a\u8ff0\u547d\u4ee4\u540e\uff0c\u8fd9\u65f6\u6211\u4eec\u5df2\u7ecf\u5728\u4e3b\u673a\u4e0a\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684 mount Namespace\uff0c\u5e76\u4e14\u5f53\u524d\u547d\u4ee4\u884c\u7a97\u53e3\u52a0\u5165\u4e86\u65b0\u521b\u5efa\u7684 Mount Namespace\u3002\u4e0b\u9762\u6211\u901a\u8fc7\u4e00\u4e2a\u4f8b\u5b50\u6765\u9a8c\u8bc1\u4e0b\uff0c\u5728\u72ec\u7acb\u7684 mount Namespace \u5185\u521b\u5efa\u6302\u8f7d\u76ee\u5f55\u662f\u4e0d\u5f71\u54cd\u4e3b\u673a\u7684\u6302\u8f7d\u76ee\u5f55\u7684\u3002<\/section>\n<section>\u5728 \/tmp \u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u76ee\u5f55\u3002\u4f7f\u7528 mount \u547d\u4ee4\u6302\u8f7d\u4e00\u4e2a tmpfs \u7c7b\u578b\u7684\u76ee\u5f55\u3002<\/section>\n<section><\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"cs\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]#\u00a0mkdir\u00a0\/tmp\/tmpfs<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]#\u00a0mount\u00a0-t\u00a0tmpfs\u00a0-o\u00a0size=20m\u00a0tmpfs\u00a0\/tmp\/tmpfs<\/span><\/code><\/pre>\n<\/section>\n<section>\u4f7f\u7528 df \u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u5df2\u7ecf\u6302\u8f7d\u7684\u76ee\u5f55\u4fe1\u606f\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"properties\\\">[root@weijing ~]# df -h\nFilesystem      Size  Used Avail Use% Mounted on\n\/dev\/vda1       500G  1.4G  499G   1% \/\ndevtmpfs         16G     0   16G   0% \/dev\ntmpfs            16G     0   16G   0% \/dev\/shm\ntmpfs            16G     0   16G   0% \/sys\/fs\/cgroup\ntmpfs            16G   57M   16G   1% \/run\ntmpfs           3.2G     0  3.2G   0% \/run\/user\/1000\ntmpfs            20M     0   20M   0% \/tmp\/tmpfs<\/pre>\n<\/section>\n<section>\u53ef\u4ee5\u770b\u5230 \/tmp\/tmpfs \u76ee\u5f55\u5df2\u7ecf\u88ab\u6b63\u786e\u6302\u8f7d\u3002\u4e3a\u4e86\u9a8c\u8bc1\u4e3b\u673a\u4e0a\u5e76\u6ca1\u6709\u6302\u8f7d\u6b64\u76ee\u5f55\uff0c\u6211\u4eec\u65b0\u6253\u5f00\u4e00\u4e2a\u547d\u4ee4\u884c\u7a97\u53e3\uff0c\u540c\u6837\u6267\u884c df \u547d\u4ee4\u67e5\u770b\u4e3b\u673a\u7684\u6302\u8f7d\u4fe1\u606f\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"properties\\\">\n[root@weijing ~]# df -h\nFilesystem      Size  Used Avail Use% Mounted on\ndevtmpfs         16G     0   16G   0% \/dev\ntmpfs            16G     0   16G   0% \/dev\/shm\ntmpfs            16G   57M   16G   1% \/run\ntmpfs            16G     0   16G   0% \/sys\/fs\/cgroup\n\/dev\/vda1       500G  1.4G  499G   1% \/\ntmpfs           3.2G     0  3.2G   0% \/run\/user\/1000<\/pre>\n<\/section>\n<section>\u901a\u8fc7\u4e0a\u9762\u8f93\u51fa\u53ef\u4ee5\u770b\u5230\u4e3b\u673a\u4e0a\u5e76\u6ca1\u6709\u6302\u8f7d \/tmp\/tmpfs\uff0c\u53ef\u89c1\u6211\u4eec\u72ec\u7acb\u7684 Mount Namespace \u4e2d\u6267\u884c mount \u64cd\u4f5c\u5e76\u4e0d\u4f1a\u5f71\u54cd\u4e3b\u673a\u3002<\/section>\n<section><\/section>\n<section>\u4e3a\u4e86\u8fdb\u4e00\u6b65\u9a8c\u8bc1\uff0c\u6211\u4eec\u7ee7\u7eed\u5728\u5f53\u524d\u547d\u4ee4\u884c\u7a97\u53e3\u67e5\u770b\u4e00\u4e0b\u5f53\u524d\u8fdb\u7a0b\u7684 Namespace \u4fe1\u606f\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"cs\\\">[root@weijing ~]# ls -l \/proc\/self\/ns\/\ntotal 0\nlrwxrwxrwx. 1 root root 0 Sep  4 08:20 ipc -&gt; ipc:[4026531839]\nlrwxrwxrwx. 1 root root 0 Sep  4 08:20 mnt -&gt; mnt:[4026532239]\nlrwxrwxrwx. 1 root root 0 Sep  4 08:20 net -&gt; net:[4026531956]\nlrwxrwxrwx. 1 root root 0 Sep  4 08:20 pid -&gt; pid:[4026531836]\nlrwxrwxrwx. 1 root root 0 Sep  4 08:20 user -&gt; user:[4026531837]\nlrwxrwxrwx. 1 root root 0 Sep  4 08:20 uts -&gt; uts:[4026531838]<\/pre>\n<\/section>\n<section><\/section>\n<section>\u7136\u540e\u65b0\u6253\u5f00\u4e00\u4e2a\u547d\u4ee4\u884c\u7a97\u53e3\uff0c\u4f7f\u7528\u76f8\u540c\u7684\u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u4e3b\u673a\u4e0a\u7684 Namespace \u4fe1\u606f\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"ruby\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# ls -l \/proc\/self\/ns\/\ntotal 0\nlrwxrwxrwx. 1 root root 0 Sep 4 08:20 ipc -&gt; ipc:[4026531839]\nlrwxrwxrwx. 1 root root 0 Sep 4 08:20 mnt -&gt; mnt:[4026531840]\nlrwxrwxrwx. 1 root root 0 Sep 4 08:20 net -&gt; net:[4026531956]\nlrwxrwxrwx. 1 root root 0 Sep 4 08:20 pid -&gt; pid:[4026531836]\nlrwxrwxrwx. 1 root root 0 Sep 4 08:20 user -&gt; user:[4026531837]\nlrwxrwxrwx. 1 root root 0 Sep 4 08:20 uts -&gt; uts:[4026531838]]<\/span><\/code><\/pre>\n<\/section>\n<section>\u901a\u8fc7\u5bf9\u6bd4\u4e24\u6b21\u547d\u4ee4\u7684\u8f93\u51fa\u7ed3\u679c\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u9664\u4e86 mount Namespace \u7684 ID \u503c\u4e0d\u4e00\u6837\u5916\uff0c\u5176\u4ed6Namespace \u7684 ID \u503c\u5747\u4e00\u81f4\u3002<\/section>\n<section><\/section>\n<section>\u901a\u8fc7\u4ee5\u4e0a\u7ed3\u679c\u5f97\u77e5\uff0c\u4f7f\u7528 unshare \u547d\u4ee4\u53ef\u4ee5\u65b0\u5efa mount Namespace\uff0c\u5e76\u4e14\u5728\u65b0\u5efa\u7684 Mount Namespace \u5185 mount \u662f\u548c\u5916\u90e8\u5b8c\u5168\u9694\u79bb\u7684\u3002<\/section>\n<p><strong>\uff082\uff09PID Namespace<\/strong><\/p>\n<section><\/section>\n<section>PID Namespace \u7684\u4f5c\u7528\u662f\u7528\u6765\u9694\u79bb\u8fdb\u7a0b\u3002\u5728\u4e0d\u540c\u7684 PID Namespace \u4e2d\uff0c\u8fdb\u7a0b\u53ef\u4ee5\u62e5\u6709\u76f8\u540c\u7684 PID \u53f7\uff0c\u5229\u7528 PID Namespace \u53ef\u4ee5\u5b9e\u73b0\u6bcf\u4e2a\u5bb9\u5668\u7684\u4e3b\u8fdb\u7a0b\u4e3a 1 \u53f7\u8fdb\u7a0b\uff0c\u800c\u5bb9\u5668\u5185\u7684\u8fdb\u7a0b\u5728\u4e3b\u673a\u4e0a\u5374\u62e5\u6709\u4e0d\u540c\u7684PID\u3002\u4f8b\u5982\u4e00\u4e2a\u8fdb\u7a0b\u5728\u4e3b\u673a\u4e0a PID \u4e3a 122\uff0c\u4f7f\u7528 PID Namespace \u53ef\u4ee5\u5b9e\u73b0\u8be5\u8fdb\u7a0b\u5728\u5bb9\u5668\u5185\u770b\u5230\u7684 PID \u4e3a 1\u3002<\/section>\n<section><\/section>\n<section>\u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u5b9e\u4f8b\u6765\u6f14\u793a\u4e0b PID Namespace\u7684\u4f5c\u7528\u3002\u9996\u5148\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a bash \u8fdb\u7a0b\uff0c\u5e76\u4e14\u65b0\u5efa\u4e00\u4e2a PID Namespace\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"shell\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# unshare --pid --fork --mount-proc \/bin\/bash<\/span><\/code><\/pre>\n<\/section>\n<section>\u6267\u884c\u5b8c\u4e0a\u8ff0\u547d\u4ee4\u540e\u5728\u4e3b\u673a\u4e0a\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684 PID Namespace\uff0c\u5e76\u4e14\u5f53\u524d\u547d\u4ee4\u884c\u7a97\u53e3\u52a0\u5165\u4e86\u65b0\u521b\u5efa\u7684 PID Namespace\u3002\u5728\u5f53\u524d\u7684\u547d\u4ee4\u884c\u7a97\u53e3\u4f7f\u7528 ps aux \u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u8fdb\u7a0b\u4fe1\u606f\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"perl\\\">[root@weijing ~]#  ps aux\nUSER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND\nroot         1  0.0  0.0 115544  2004 pts\/0    S    10:57   0:00 bash\nroot        10  0.0  0.0 155444  1764 pts\/0    R+   10:59   0:00 ps aux<\/pre>\n<\/section>\n<section><\/section>\n<section>\u901a\u8fc7\u4e0a\u8ff0\u547d\u4ee4\u8f93\u51fa\u7ed3\u679c\u53ef\u4ee5\u770b\u5230\u5f53\u524d Namespace \u4e0b bash \u4e3a 1 \u53f7\u8fdb\u7a0b\uff0c\u800c\u4e14\u6211\u4eec\u4e5f\u770b\u4e0d\u5230\u4e3b\u673a\u4e0a\u7684\u5176\u4ed6\u8fdb\u7a0b\u4fe1\u606f\u3002<\/section>\n<p><strong>\uff083\uff09UTS Namespace<\/strong><\/p>\n<section><\/section>\n<section>UTS Namespace \u4e3b\u8981\u662f\u7528\u6765\u9694\u79bb\u4e3b\u673a\u540d\u7684\uff0c\u5b83\u5141\u8bb8\u6bcf\u4e2a UTS Namespace \u62e5\u6709\u4e00\u4e2a\u72ec\u7acb\u7684\u4e3b\u673a\u540d\u3002\u4f8b\u5982\u6211\u4eec\u7684\u4e3b\u673a\u540d\u79f0\u4e3aweijing\uff0c\u4f7f\u7528 UTS Namespace \u53ef\u4ee5\u5b9e\u73b0\u5728\u5bb9\u5668\u5185\u7684\u4e3b\u673a\u540d\u79f0\u4e3a weijingdocker \u6216\u8005\u5176\u4ed6\u4efb\u610f\u81ea\u5b9a\u4e49\u4e3b\u673a\u540d\u3002<\/section>\n<section><\/section>\n<section>\u901a\u8fc7\u4e00\u4e2a\u5b9e\u4f8b\u6765\u9a8c\u8bc1\u4e0b UTS Namespace \u7684\u4f5c\u7528\uff0c\u9996\u5148\u6211\u4eec\u4f7f\u7528 unshare \u547d\u4ee4\u6765\u521b\u5efa\u4e00\u4e2a UTS Namespace\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"shell\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# unshare --uts --fork \/bin\/bash<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u521b\u5efa\u597d UTS Namespace \u540e\uff0c\u5f53\u524d\u547d\u4ee4\u884c\u7a97\u53e3\u5df2\u7ecf\u5904\u4e8e\u4e00\u4e2a\u72ec\u7acb\u7684 UTS Namespace \u4e2d\uff0c\u4e0b\u9762\u6211\u4eec\u4f7f\u7528 hostname \u547d\u4ee4\uff08hostname \u53ef\u4ee5\u7528\u6765\u67e5\u770b\u4e3b\u673a\u540d\u79f0\uff09\u8bbe\u7f6e\u4e00\u4e0b\u4e3b\u673a\u540d\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"perl\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing\u00a0~]<span class=\\\"code-snippet__comment\\\">#\u00a0hostname\u00a0-b\u00a0weijingdocker<\/span><\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]<span class=\\\"code-snippet__comment\\\"># hostname<\/span><\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">weijingdocker<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u53ef\u4ee5\u770b\u5230\u5f53\u524dUTS Namespace \u5185\u7684\u4e3b\u673a\u540d\u5df2\u7ecf\u88ab\u4fee\u6539\u4e3a weijingdocker\u3002\u7136\u540e\u6211\u4eec\u65b0\u6253\u5f00\u4e00\u4e2a\u547d\u4ee4\u884c\u7a97\u53e3\uff0c\u4f7f\u7528\u76f8\u540c\u7684\u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u4e3b\u673a\u7684 hostname\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"ruby\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# hostname<\/span><\/code><code><span class=\\\"code-snippet_outer\\\">weijing<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u53ef\u4ee5\u770b\u5230\u4e3b\u673a\u7684\u540d\u79f0\u4ecd\u7136\u4e3a weijing\uff0c\u5e76\u6ca1\u6709\u88ab\u4fee\u6539\u3002\u7531\u6b64\u53ef\u4ee5\u9a8c\u8bc1 UTS Namespace \u53ef\u4ee5\u7528\u6765\u9694\u79bb\u4e3b\u673a\u540d\u3002<\/section>\n<p><strong>\uff084\uff09IPC Namespace<\/strong><\/p>\n<section>IPC Namespace \u4e3b\u8981\u662f\u7528\u6765\u9694\u79bb\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u3002PID Namespace \u548c IPC Namespace \u4e00\u8d77\u4f7f\u7528\u53ef\u4ee5\u5b9e\u73b0\u540c\u4e00 IPC Namespace \u5185\u7684\u8fdb\u7a0b\u5f7c\u6b64\u53ef\u4ee5\u901a\u4fe1\uff0c\u4e0d\u540c IPC Namespace \u7684\u8fdb\u7a0b\u5374\u4e0d\u80fd\u901a\u4fe1\u3002<\/section>\n<section><\/section>\n<section>\u901a\u8fc7\u4e00\u4e2a\u5b9e\u4f8b\u6765\u9a8c\u8bc1\u4e0bIPC Namespace\u7684\u4f5c\u7528\uff0c\u9996\u5148\u6211\u4eec\u4f7f\u7528 unshare \u547d\u4ee4\u6765\u521b\u5efa\u4e00\u4e2a IPC Namespace\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"shell\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing\u00a0~]#\u00a0unshare\u00a0--ipc\u00a0--fork\u00a0\/bin\/bash<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u9700\u8981\u501f\u52a9\u4e24\u4e2a\u547d\u4ee4\u6765\u5b9e\u73b0\u5bf9 IPC Namespace \u7684\u9a8c\u8bc1\u3002<\/section>\n<section><\/section>\n<ul class=\\\"list-paddingleft-2\\\">\n<li>ipcs -q \u547d\u4ee4\uff1a\u7528\u6765\u67e5\u770b\u7cfb\u7edf\u95f4\u901a\u4fe1\u961f\u5217\u5217\u8868\u3002<\/li>\n<li>ipcmk -Q \u547d\u4ee4\uff1a\u7528\u6765\u521b\u5efa\u7cfb\u7edf\u95f4\u901a\u4fe1\u961f\u5217\u3002<\/li>\n<\/ul>\n<section><\/section>\n<section>\u9996\u5148\u4f7f\u7528 ipcs -q \u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u5f53\u524d IPC Namespace \u4e0b\u7684\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\u5217\u8868\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"ruby\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# ipcs -q<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">------ Message Queues --------<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">key        msqid      owner      perms      used-bytes   messages<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u53ef\u4ee5\u770b\u5230\u5f53\u524d\u65e0\u4efb\u4f55\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\uff0c\u4f7f\u7528 ipcmk -Q \u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"cs\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# ipcmk -Q<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">Message queue id: 0<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u518d\u6b21\u4f7f\u7528 ipcs -q \u547d\u4ee4\u67e5\u770b\u5f53\u524d IPC Namespace \u4e0b\u7684\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\u5217\u8868\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"cs\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# ipcs -q<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">------ Message Queues --------<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">key        msqid      owner      perms      used-bytes   messages<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">0x73682a32 0          root       644        0            0<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u53ef\u4ee5\u770b\u5230\u5df2\u7ecf\u6210\u529f\u521b\u5efa\u4e86\u4e00\u4e2a\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\u3002\u7136\u540e\u6211\u4eec\u65b0\u6253\u5f00\u4e00\u4e2a\u547d\u4ee4\u884c\u7a97\u53e3\uff0c\u4f7f\u7528ipcs -q \u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u4e3b\u673a\u7684\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"ruby\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing ~]# ipcs -q<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">------ Message Queues --------<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">key        msqid      owner      perms      used-bytes   messages<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u901a\u8fc7\u4ee5\u4e0a\u53ef\u4ee5\u53d1\u73b0\uff0c\u5728\u5355\u72ec\u7684 IPC Namespace \u5185\u521b\u5efa\u7684\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\u5728\u4e3b\u673a\u4e0a\u65e0\u6cd5\u770b\u5230\u3002\u5373 IPC Namespace \u5b9e\u73b0\u4e86\u7cfb\u7edf\u901a\u4fe1\u961f\u5217\u7684\u9694\u79bb\u3002<\/section>\n<p><strong>\uff085\uff09User Namespace<\/strong><\/p>\n<section><\/section>\n<section>User Namespace \u4e3b\u8981\u662f\u7528\u6765\u9694\u79bb\u7528\u6237\u548c\u7528\u6237\u7ec4\u7684\u3002\u4e00\u4e2a\u6bd4\u8f83\u5178\u578b\u7684\u5e94\u7528\u573a\u666f\u5c31\u662f\u5728\u4e3b\u673a\u4e0a\u4ee5\u975e root \u7528\u6237\u8fd0\u884c\u7684\u8fdb\u7a0b\u53ef\u4ee5\u5728\u4e00\u4e2a\u5355\u72ec\u7684 User Namespace \u4e2d\u6620\u5c04\u6210 root \u7528\u6237\u3002\u4f7f\u7528 User Namespace \u53ef\u4ee5\u5b9e\u73b0\u8fdb\u7a0b\u5728\u5bb9\u5668\u5185\u62e5\u6709 root \u6743\u9650\uff0c\u800c\u5728\u4e3b\u673a\u4e0a\u5374\u53ea\u662f\u666e\u901a\u7528\u6237\u3002<\/section>\n<section><\/section>\n<section>User Namesapce \u7684\u521b\u5efa\u662f\u53ef\u4ee5\u4e0d\u4f7f\u7528 root \u6743\u9650\u7684\u3002\u4e0b\u9762\u6211\u4eec\u4ee5\u666e\u901a\u7528\u6237\u7684\u8eab\u4efd\u521b\u5efa\u4e00\u4e2a User Namespace\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"ruby\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing\u00a0~]#\u00a0unshare\u00a0--user\u00a0-r\u00a0\/bin\/bash<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>CentOS7 \u9ed8\u8ba4\u5141\u8bb8\u521b\u5efa\u7684 User Namespace \u4e3a 0\uff0c\u5982\u679c\u6267\u884c\u4e0a\u8ff0\u547d\u4ee4\u5931\u8d25\uff08 unshare \u547d\u4ee4\u8fd4\u56de\u7684\u9519\u8bef\u4e3a unshare: unshare failed: Invalid argument \uff09\uff0c\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4fee\u6539\u7cfb\u7edf\u5141\u8bb8\u521b\u5efa\u7684 User Namespace \u6570\u91cf\uff0cecho 65535 &gt; \/proc\/sys\/user\/max_user_namespaces\uff0c\u7136\u540e\u518d\u6b21\u5c1d\u8bd5\u521b\u5efa User Namespace\u3002<\/section>\n<section><\/section>\n<section>\u6267\u884c id \u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u5f53\u524d\u7684\u7528\u6237\u4fe1\u606f\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"ini\\\"><code><span class=\\\"code-snippet_outer\\\"><span class=\\\"code-snippet__section\\\">[root@weijing ~]<\/span><span class=\\\"code-snippet__comment\\\"># id<\/span><\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\"><span class=\\\"code-snippet__attr\\\">uid<\/span>=<span class=\\\"code-snippet__number\\\">0<\/span>(root) gid=<span class=\\\"code-snippet__number\\\">0<\/span>(root) groups=<span class=\\\"code-snippet__number\\\">0<\/span>(root),<span class=\\\"code-snippet__number\\\">65534<\/span>(nfsnobody) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u901a\u8fc7\u4e0a\u9762\u7684\u8f93\u51fa\u53ef\u4ee5\u770b\u5230\u6211\u4eec\u5728\u65b0\u7684 User Namespace \u5185\u5df2\u7ecf\u662f root \u7528\u6237\u4e86\u3002\u4e0b\u9762\u6211\u4eec\u4f7f\u7528\u53ea\u6709\u4e3b\u673a root \u7528\u6237\u624d\u53ef\u4ee5\u6267\u884c\u7684 reboot \u547d\u4ee4\u6765\u9a8c\u8bc1\u4e00\u4e0b\uff0c\u5728\u5f53\u524d\u547d\u4ee4\u884c\u7a97\u53e3\u6267\u884c reboot \u547d\u4ee4\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"http\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing\u00a0~]#\u00a0reboot<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">Failed to open \/dev\/initctl: Permission denied<\/span><\/code>\n<code><span class=\\\"code-snippet_outer\\\">Failed to talk to init daemon.<\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u53ef\u4ee5\u770b\u5230\u5728\u65b0\u521b\u5efa\u7684 User Namespace \u5185\u867d\u7136\u662f root \u7528\u6237\uff0c\u4f46\u662f\u5e76\u6ca1\u6709\u6743\u9650\u6267\u884c reboot \u547d\u4ee4\u3002\u8fd9\u8bf4\u660e\u5728\u9694\u79bb\u7684 User Namespace \u4e2d\uff0c\u5e76\u4e0d\u80fd\u83b7\u53d6\u5230\u4e3b\u673a\u7684 root \u6743\u9650\uff0c\u4e5f\u5c31\u662f\u8bf4 User Namespace \u5b9e\u73b0\u4e86\u7528\u6237\u548c\u7528\u6237\u7ec4\u7684\u9694\u79bb\u3002<\/section>\n<p><strong>\uff086\uff09Net Namespace<\/strong><\/p>\n<section>Net Namespace \u662f\u7528\u6765\u9694\u79bb\u7f51\u7edc\u8bbe\u5907\u3001IP \u5730\u5740\u548c\u7aef\u53e3\u7b49\u4fe1\u606f\u7684\u3002Net Namespace \u53ef\u4ee5\u8ba9\u6bcf\u4e2a\u8fdb\u7a0b\u62e5\u6709\u81ea\u5df1\u72ec\u7acb\u7684 IP \u5730\u5740\uff0c\u7aef\u53e3\u548c\u7f51\u5361\u4fe1\u606f\u3002\u4f8b\u5982\u4e3b\u673a IP \u5730\u5740\u4e3a 172.16.4.1 \uff0c\u5bb9\u5668\u5185\u53ef\u4ee5\u8bbe\u7f6e\u72ec\u7acb\u7684 IP \u5730\u5740\u4e3a 192.168.1.1\u3002<\/section>\n<section><\/section>\n<section>\u4f7f\u7528 ip add \u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u4e3b\u673a\u4e0a\u7684\u7f51\u7edc\u4fe1\u606f\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"properties\\\"># ip add\n1: lo: &lt;LOOPBACK,UP,LOWER_UP&gt; mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000\n    link\/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00\n    inet 127.0.0.1\/8 scope host lo\n       valid_lft forever preferred_lft forever\n    inet6 ::1\/128 scope host\n       valid_lft forever preferred_lft forever\n2: eth0: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc pfifo_fast state UP group default qlen 1000\n    link\/ether 02:11:b0:14:01:0c brd ff:ff:ff:ff:ff:ff\n    inet 172.20.1.11\/24 brd 172.20.1.255 scope global dynamic eth0\n       valid_lft 86063337sec preferred_lft 86063337sec\n    inet6 fe80::11:b0ff:fe14:10c\/64 scope link\n       valid_lft forever preferred_lft forever\n3: docker0: &lt;NO-CARRIER,BROADCAST,MULTICAST,UP&gt; mtu 1500 qdisc noqueue state DOWN group default\n    link\/ether 02:42:82:8d:a0:df brd ff:ff:ff:ff:ff:ff\n    inet 172.17.0.1\/16 scope global docker0\n       valid_lft forever preferred_lft forever\n    inet6 fe80::42:82ff:fe8d:a0df\/64 scope link\n       valid_lft forever preferred_lft forever<\/pre>\n<\/section>\n<section><\/section>\n<section>\u7136\u540e\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a Net Namespace\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"perl\\\"><code><span class=\\\"code-snippet_outer\\\">[root@weijing\u00a0~]<span class=\\\"code-snippet__comment\\\">#\u00a0unshare\u00a0--net\u00a0--fork\u00a0\/bin\/bash<\/span><\/span><\/code><\/pre>\n<\/section>\n<section><\/section>\n<section>\u540c\u6837\u7684\u6211\u4eec\u4f7f\u7528 ip add \u547d\u4ee4\u67e5\u770b\u4e00\u4e0b\u7f51\u7edc\u4fe1\u606f\uff1a<\/section>\n<section class=\\\"code-snippet__fix code-snippet__js\\\">\n<pre class=\\\"code-snippet__js\\\" data-lang=\\\"perl\\\">[root@weijing ~]# ip add\n1: lo: &lt;LOOPBACK&gt; mtu 65536 qdisc noop state DOWN group default qlen 1000\n    link\/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00<\/pre>\n<\/section>\n<section><\/section>\n<section>\u53ef\u4ee5\u770b\u5230\uff0c\u5bbf\u4e3b\u673a\u4e0a\u6709 lo\u3001eth0\u3001docker0 \u7b49\u7f51\u7edc\u8bbe\u5907\uff0c\u800c\u6211\u4eec\u65b0\u5efa\u7684 Net Namespace \u5185\u5219\u4e0e\u4e3b\u673a\u4e0a\u7684\u7f51\u7edc\u8bbe\u5907\u4e0d\u540c\u3002<\/section>\n<section><\/section>\n<section><\/section>\n<section><\/section>\n<section><strong>\u5c0f\u7ed3\u00a0<\/strong><\/section>\n<section><\/section>\n<section><\/section>\n<section>\u81f3\u6b64\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86\u4ec0\u4e48\u662f Namespace\u3002Namespace \u662f Linux \u5185\u6838\u7684\u4e00\u4e2a\u7279\u6027\uff0c\u8be5\u7279\u6027\u53ef\u4ee5\u5b9e\u73b0\u5728\u540c\u4e00\u4e3b\u673a\u7cfb\u7edf\u4e2d\u5bf9\u8fdb\u7a0b ID\u3001\u4e3b\u673a\u540d\u3001\u7528\u6237 ID\u3001\u6587\u4ef6\u540d\u3001\u7f51\u7edc\u548c\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7b49\u8d44\u6e90\u7684\u9694\u79bb\u3002Docker \u6b63\u662f\u7ed3\u5408\u4e86\u8fd9\u516d\u79cd Namespace \u7684\u529f\u80fd\uff0c\u624d\u8bde\u751f\u4e86 Docker \u5bb9\u5668\u3002<\/section>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 \u4ec0\u4e48\u662f Namespace\u00a0\u00a0 Namespace \u662f Linux \u5185\u6838\u7684\u4e00\u9879\u529f\u80fd\uff0c\u8be5\u529f\u80fd\u5bf9\u5185\u6838\u8d44\u6e90\u8fdb\u884c\u5206 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=5461\"> <span class=\"screen-reader-text\">Docker \u4e4b Namespace \u8d44\u6e90\u9694\u79bb<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[108,123],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"\u00a0 \u4ec0\u4e48\u662f Namespace\u00a0\u00a0 Namespace \u662f Linux \u5185\u6838\u7684\u4e00\u9879\u529f\u80fd\uff0c\u8be5\u529f\u80fd\u5bf9\u5185\u6838\u8d44\u6e90\u8fdb\u884c\u5206&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5461"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5461"}],"version-history":[{"count":1,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5461\/revisions"}],"predecessor-version":[{"id":5505,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5461\/revisions\/5505"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5461"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}