{"id":970,"date":"2021-07-29T18:07:58","date_gmt":"2021-07-29T10:07:58","guid":{"rendered":"https:\/\/egonlin.com\/?p=970"},"modified":"2022-04-26T13:28:18","modified_gmt":"2022-04-26T05:28:18","slug":"%e7%ac%ac%e4%ba%94%e7%ab%a0%ef%bc%9adocker%e7%bd%91%e7%bb%9c","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=970","title":{"rendered":"\u7b2c\u4e94\u7ae0\uff1adocker\u7f51\u7edc"},"content":{"rendered":"<h1>docker\u7f51\u7edc<\/h1>\n<h2>\u4e00\u3001\u7f51\u7edc\u57fa\u7840<\/h2>\n<p>\u5176\u4e2dDocker\u4f7f\u7528\u5230\u7684\u4e0eLinux\u7f51\u7edc\u6709\u5173\u7684\u6280\u672f\u5206\u522b\u6709\uff1a\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4\u3001Veth\u3001Iptables\u3001\u7f51\u6865\u3001\u8def\u7531<\/p>\n<h3>1\u3001\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4<\/h3>\n<pre><code class=\"language-bash\">    1\u3001\u4e3a\u4e86\u652f\u6301\u7f51\u7edc\u534f\u8bae\u6808\u7684\u591a\u4e2a\u5b9e\u4f8b\uff0cLinux\u5728\u7f51\u7edc\u534f\u8bae\u6808\u4e2d\u5f15\u5165\u4e86\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4(NetworkNamespace)\uff0c\u8fd9\u4e9b\u72ec\u7acb\u7684\u534f\u8bae\u6808\u88ab\u9694\u79bb\u5230\u4e0d\u540c\u7684\u547d\u540d\u7a7a\u95f4\u4e2d\u3002\u5904\u4e8e\u4e0d\u540c\u7684\u547d\u540d\u7a7a\u95f4\u7684\u7f51\u7edc\u534f\u8bae\u6808\u662f\u5b8c\u5168\u9694\u79bb\u7684\uff0c\u5f7c\u6b64\u4e4b\u95f4\u65e0\u6cd5\u8fdb\u884c\u7f51\u7edc\u901a\u4fe1\uff0c\u5c31\u597d\u50cf\u4e24\u4e2a\u201c\u5e73\u884c\u5b87\u5b99\u201d\u3002\u901a\u8fc7\u8fd9\u79cd\u5bf9\u7f51\u7edc\u8d44\u6e90\u7684\u9694\u79bb\uff0c\u5c31\u80fd\u5728\u4e00\u4e2a\u5bbf\u4e3b\u673a\u4e0a\u865a\u62df\u591a\u4e2a\u4e0d\u540c\u7684\u7f51\u7edc\u73af\u5883\uff0c\u800cDocker\u6b63\u662f\u5229\u7528\u8fd9\u79cd\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4\u7684\u7279\u6027\uff0c\u5b9e\u73b0\u4e86\u4e0d\u540c\u5bb9\u5668\u4e4b\u95f4\u7684\u7f51\u7edc\u9694\u79bb\u3002\u5728Linux\u7684\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\u5185\u53ef\u4ee5\u6709\u81ea\u5df1\u72ec\u7acb\u7684Iptables\u6765\u8f6c\u53d1\u3001NAT\u53caIP\u5305\u8fc7\u6ee4\u7b49\u529f\u80fd\u3002\n    2\u3001Linux\u7684\u7f51\u7edc\u534f\u8bae\u6808\u662f\u5341\u5206\u590d\u6742\u7684\uff0c\u4e3a\u4e86\u652f\u6301\u72ec\u7acb\u7684\u534f\u8bae\u6808\uff0c\u76f8\u5173\u7684\u8fd9\u4e9b\u5168\u5c40\u53d8\u91cf\u90fd\u5fc5\u987b\u4fee\u6539\u4e3a\u534f\u8bae\u6808\u79c1\u6709\u3002\u6700\u597d\u7684\u529e\u6cd5\u5c31\u662f\u8ba9\u8fd9\u4e9b\u5168\u5c40\u53d8\u91cf\u6210\u4e3a\u4e00\u4e2aNetNamespace\u53d8\u91cf\u7684\u6210\u5458\uff0c\u7136\u540e\u4e3a\u4e86\u534f\u8bae\u6808\u7684\u51fd\u6570\u8c03\u7528\u52a0\u5165\u4e00\u4e2aNamespace\u53c2\u6570\u3002\u8fd9\u5c31\u662fLinux\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4\u7684\u6838\u5fc3\u3002\u6240\u4ee5\u7684\u7f51\u7edc\u8bbe\u5907\u90fd\u53ea\u80fd\u5c5e\u4e8e\u4e00\u4e2a\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4\u3002\u5f53\u7136\uff0c\u901a\u5e38\u7684\u7269\u7406\u7f51\u7edc\u8bbe\u5907\u53ea\u80fd\u5173\u8054\u5230root\u8fd9\u4e2a\u547d\u540d\u7a7a\u95f4\u4e2d\u3002\u865a\u62df\u7f51\u7edc\u8bbe\u5907\u5219\u53ef\u4ee5\u88ab\u521b\u5efa\u5e76\u5173\u8054\u5230\u4e00\u4e2a\u7ed9\u5b9a\u7684\u547d\u540d\u7a7a\u95f4\u4e2d\uff0c\u800c\u4e14\u53ef\u4ee5\u5728\u8fd9\u4e9b\u540d\u79f0\u7a7a\u95f4\u4e4b\u95f4\u79fb\u52a8\u3002<\/code><\/pre>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/1-31.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/1-31.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h3>2\u3001Veth\u8bbe\u5907<\/h3>\n<pre><code class=\"language-bash\">    \u5f15\u5165Veth\u8bbe\u5907\u5bf9\u662f\u4e3a\u4e86\u5728\u4e0d\u540c\u7684\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\uff0c\u5229\u7528\u5b83\u53ef\u4ee5\u76f4\u63a5\u5c06\u4e24\u4e2a\u7f51\u7edc\u540d\u79f0\u7a7a\u95f4\u94fe\u63a5\u8d77\u6765\u3002\u7531\u4e8e\u8981\u8fde\u63a5\u7684\u4e24\u4e2a\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\uff0c\u6240\u4ee5Veth\u8bbe\u5907\u662f\u6210\u5bf9\u51fa\u73b0\u7684\uff0c\u5f88\u50cf\u4e00\u5bf9\u4ee5\u592a\u7f51\u5361\uff0c\u5e76\u4e14\u4e2d\u95f4\u6709\u4e00\u6839\u76f4\u8fde\u7684\u7f51\u7ebf\u3002\u65e2\u7136\u662f\u4e00\u5bf9\u7f51\u5361\uff0c\u90a3\u4e48\u6211\u4eec\u5c06\u5176\u4e2d\u4e00\u7aef\u79f0\u4e3a\u53e6\u4e00\u7aef\u7684peer\u3002\u5728Veth\u8bbe\u5907\u7684\u4e00\u7aef\u53d1\u9001\u6570\u636e\u65f6\uff0c\u5b83\u4f1a\u5c06\u6570\u636e\u76f4\u63a5\u53d1\u9001\u5230\u53e6\u4e00\u7aef\uff0c\u5e76\u89e6\u53d1\u53e6\u4e00\u7aef\u7684\u63a5\u6536\u64cd\u4f5c\u3002<\/code><\/pre>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/Veth\u539f\u7406.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/Veth\u539f\u7406.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h3>3\u3001\u4f7f\u7528Veth\u8bbe\u5907\u5bf9<\/h3>\n<h4>1\uff09\u521b\u5efa\u4e00\u4e2a\u4e24\u4e2a\u547d\u540d\u7a7a\u95f4<\/h4>\n<pre><code class=\"language-bash\">#\u521b\u5efatest01\u547d\u540d\u7a7a\u95f4\n[root@Centos7 ~]# ip netns add test01\n#\u521b\u5efatest02\u547d\u540d\u7a7a\u95f4\n[root@Centos7 ~]# ip netns add test02\n#\u67e5\u770b\u547d\u4ee4\u7a7a\u95f4\n[root@Centos7 ~]# ip netns list\ntest02\ntest01<\/code><\/pre>\n<h4>2\uff09\u521b\u5efaVeth\u8bbe\u5907\u5bf9<\/h4>\n<pre><code class=\"language-bash\">[root@Centos7 ~]# ip link add veth01 type veth peer name veth02\n#\u67e5\u770b\n[root@Centos7 ~]# ip link show\n4: veth02@veth01: &lt;BROADCAST,MULTICAST,M-DOWN&gt; mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000\n    link\/ether a2:af:63:df:f2:d9 brd ff:ff:ff:ff:ff:ff\n5: veth01@veth02: &lt;BROADCAST,MULTICAST,M-DOWN&gt; mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000\n    link\/ether 7a:d6:8b:90:f1:ce brd ff:ff:ff:ff:ff:ff<\/code><\/pre>\n<p>\u751f\u6210\u4e86\u4e24\u4e2aveth\u8bbe\u5907\uff0c\u4e92\u4e3a\u5bf9\u65b9\u7684peer\u3002<\/p>\n<h4>3\uff09\u7ed1\u5b9a\u547d\u540d\u7a7a\u95f4<\/h4>\n<pre><code class=\"language-bash\">[root@Centos7 ~]# ip link set veth01 netns test01\n[root@Centos7 ~]# ip link set veth02 netns test02\n[root@Centos7 ~]# ip link show | grep veth\n[root@Centos7 ~]#<\/code><\/pre>\n<p>\u5df2\u7ecf\u67e5\u770b\u4e0d\u5230veth01\u548cveth02\uff0c\u5f53\u6211\u4eec\u8fdb\u5165test01\u547d\u540d\u7a7a\u95f4\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u67e5\u770b\u5230veth01<\/p>\n<pre><code class=\"language-bash\">[root@Centos7 ~]# ip netns exec test01 bash\n[root@Centos7 ~]# ip a\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\n5: veth01@if4: &lt;BROADCAST,MULTICAST&gt; mtu 1500 qdisc noop state DOWN group default qlen 1000\n    link\/ether 7a:d6:8b:90:f1:ce brd ff:ff:ff:ff:ff:ff link-netnsid 1\n[root@Centos7 ~]#exit\nexit\n\n[root@Centos7 ~]# ip netns exec test02 bash\n[root@Centos7 ~]# ip a\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\n4: veth02@if5: &lt;BROADCAST,MULTICAST&gt; mtu 1500 qdisc noop state DOWN group default qlen 1000\n    link\/ether a2:af:63:df:f2:d9 brd ff:ff:ff:ff:ff:ff link-netnsid 0\n[root@Centos7 ~]#\n<\/code><\/pre>\n<h4>4\uff09\u5c06Veth\u5206\u914dip<\/h4>\n<pre><code class=\"language-bash\">[root@Centos7 ~]# ip netns exec test01 ip addr add 172.16.0.111\/20 dev veth01\n[root@Centos7 ~]# ip netns exec test01 ip link set dev veth01 up\n\n[root@Centos7 ~]# ip netns exec test02 ip addr add 172.16.0.112\/20 dev veth02\n[root@Centos7 ~]# ip netns exec test02 ip link set dev veth02 up\n\n#\u67e5\u770b\n[root@Centos7 ~]# ip netns exec test01 ip a\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\n5: veth01@if4: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc noqueue state UP group default qlen 1000\n    link\/ether 7a:d6:8b:90:f1:ce brd ff:ff:ff:ff:ff:ff link-netnsid 1\n    inet 172.16.0.111\/20 scope global veth01\n       valid_lft forever preferred_lft forever\n    inet6 fe80::78d6:8bff:fe90:f1ce\/64 scope link\n       valid_lft forever preferred_lft forever\n[root@Centos7 ~]# ip netns exec test02 ip a\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\n4: veth02@if5: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc noqueue state UP group default qlen 1000\n    link\/ether a2:af:63:df:f2:d9 brd ff:ff:ff:ff:ff:ff link-netnsid 0\n    inet 172.16.0.112\/20 scope global veth02\n       valid_lft forever preferred_lft forever\n    inet6 fe80::a0af:63ff:fedf:f2d9\/64 scope link\n       valid_lft forever preferred_lft forever\n\n[root@Centos7 ~]# ip netns exec test01 ethtool -S veth01\nNIC statistics:\n     peer_ifindex: 4\n[root@Centos7 ~]# ip netns exec test02 ethtool -S veth02\nNIC statistics:\n     peer_ifindex: 5\n\n[root@Centos7 ~]# ip netns exec test01 bash\n[root@Centos7 ~]# ping 172.16.0.112\nPING 172.16.0.112 (172.16.0.112) 56(84) bytes of data.\n64 bytes from 172.16.0.112: icmp_seq=1 ttl=64 time=0.066 ms\n64 bytes from 172.16.0.112: icmp_seq=2 ttl=64 time=0.021 ms\n<\/code><\/pre>\n<h4>5\uff09\u6d4b\u8bd5\u7f51\u7edc\u662f\u5426\u7545\u901a<\/h4>\n<pre><code class=\"language-bash\">[root@Centos7 ~]# ip netns exec test01 bash\n[root@Centos7 ~]# ping 172.16.0.112\nPING 172.16.0.112 (172.16.0.112) 56(84) bytes of data.\n64 bytes from 172.16.0.112: icmp_seq=1 ttl=64 time=0.066 ms\n64 bytes from 172.16.0.112: icmp_seq=2 ttl=64 time=0.021 ms\n\n[root@Centos7 ~]# exit\nexit\n[root@Centos7 ~]# ip netns exec test02 bash\n[root@Centos7 ~]# ping 172.16.0.111\nPING 172.16.0.111 (172.16.0.111) 56(84) bytes of data.\n64 bytes from 172.16.0.111: icmp_seq=1 ttl=64 time=0.014 ms\n64 bytes from 172.16.0.111: icmp_seq=2 ttl=64 time=0.022 ms<\/code><\/pre>\n<h3>4\u3001\u7f51\u6865<\/h3>\n<pre><code class=\"language-bash\">    Linux\u53ef\u4ee5\u652f\u6301\u591a\u4e2a\u4e0d\u540c\u7684\u7f51\u7edc\uff0c\u5b83\u4eec\u4e4b\u95f4\u80fd\u591f\u76f8\u4e92\u901a\u4fe1\uff0c\u5c31\u9700\u8981\u4e00\u4e2a\u7f51\u6865\u3002\u7f51\u6865\u662f\u4e8c\u5c42\u7684\u865a\u62df\u7f51\u7edc\u8bbe\u5907\uff0c\u5b83\u662f\u628a\u82e5\u5e72\u4e2a\u7f51\u7edc\u63a5\u53e3\u201c\u8fde\u63a5\u201d\u8d77\u6765\uff0c\u4ece\u800c\u62a5\u6587\u80fd\u591f\u4e92\u76f8\u8f6c\u53d1\u3002\u7f51\u6865\u80fd\u591f\u89e3\u6790\u6536\u53d1\u7684\u62a5\u6587\uff0c\u8bfb\u53d6\u76ee\u6807MAC\u5730\u5740\u7684\u4fe1\u606f\uff0c\u548c\u81ea\u5df1\u8bb0\u5f55\u7684MAC\u8868\u7ed3\u5408\uff0c\u6765\u51b3\u5b9a\u62a5\u6587\u7684\u8f6c\u53d1\u76ee\u6807\u7f51\u53e3\u3002\n    \u7f51\u6865\u8bbe\u5907br0\u7ed1\u5b9a\u4e86eth0\u3001eth1\u3002\u5bf9\u4e8e\u7f51\u7edc\u534f\u8bae\u7684\u4e0a\u5c42\u6765\u8bf4\uff0c\u53ea\u770b\u5f97\u5230br0\u3002\u56e0\u4e3a\u6865\u63a5\u662f\u5728\u6570\u636e\u94fe\u8def\u5c42\u5b9e\u73b0\u7684\uff0c\u4e0a\u5c42\u4e0d\u9700\u8981\u5173\u5fc3\u6865\u63a5\u7684\u7ec6\u8282\uff0c\u4e8e\u662f\u534f\u8bae\u4e0a\u5c42\u9700\u8981\u53d1\u9001\u7684\u62a5\u6587\u88ab\u9001\u5230br0\uff0c\u7f51\u6865\u8bbe\u5907\u7684\u5904\u7406\u4ee3\u7801\u5224\u65ad\u62a5\u6587\u8be5\u88ab\u8f6c\u53d1\u5230eth0\u8fd8\u662feth1\uff0c\u6216\u8005\u4e24\u8005\u7686\u8f6c\u53d1\u3002\u53cd\u8fc7\u6765\uff0c\u4eceeth0\u6216\u4eceeth1\u63a5\u6536\u5230\u7684\u62a5\u6587\u88ab\u63d0\u4ea4\u7ed9\u7f51\u6865\u7684\u5904\u7406\u4ee3\u7801\uff0c\u5728\u8fd9\u91cc\u4f1a\u5224\u65ad\u62a5\u6587\u5e94\u8be5\u88ab\u8f6c\u53d1\u3001\u4e22\u5f03\u8fd8\u662f\u63d0\u4ea4\u5230\u534f\u8bae\u679d\u4e0a\u5c42\u3002\u800c\u6709\u65f6eth1\u4e5f\u53ef\u80fd\u4f1a\u4f5c\u4e3a\u62a5\u6587\u7684\u6e90\u5730\u5740\u6216\u76ee\u7684\u5730\u5740\u76f4\u63a5\u53c2\u4e0e\u62a5\u6587\u7684\u53d1\u9001\u4e0e\u63a5\u6536\uff0c\u4ece\u800c\u7ed5\u8fc7\u7f51\u6865\u3002<\/code><\/pre>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/3-27.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/3-27.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h3>5\u3001iptables<\/h3>\n<pre><code class=\"language-bash\">    \u6211\u4eec\u77e5\u9053\uff0cLinux\u7edc\u534f\u8bae\u975e\u5e38\u9ad8\u6548\uff0c\u540c\u65f6\u6bd4\u8f83\u590d\u6742\u5982\u679c\u6211\u4eec\u5e0c\u671b\u5728\u6570\u636e\u7684\u5904\u7406\u8fc7\u7a0b\u4e2d\u5bf9\u5173\u5fc3\u7684\u6570\u636e\u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\u8be5\u600e\u4e48\u505a\u5462\uff1fLinux\u63d0\u4f9b\u4e86\u4e00\u5957\u673a\u5236\u6765\u4e3a\u7528\u6237\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u6570\u636e\u5305\u5904\u7406\u8fc7\u7a0b\u3002\n    \u5728Linux\u7f51\u7edc\u534f\u8bae\u68cb\u4e2d\u6709\u4e00\u7ec4\u56de\u8c03\u51fd\u6570\u6302\u63a5\u70b9\uff0c\u901a\u8fc7\u8fd9\u4e9b\u6302\u63a5\u70b9\u6302\u63a5\u7684\u94a9\u5b50\u51fd\u6570\u53ef\u4ee5\u5728Linux\u7f51\u7edc\u68cb\u5904\u7406\u6570\u636e\u5305\u7684\u8fc7\u7a0b\u4e2d\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u4e9b\u64cd\u4f5c\uff0c\u4f8b\u5982\u8fc7\u6ee4\u3001\u4fee\u6539\u3001\u4e22\u5f03\u7b49\u6574\u4e2a\u6302\u63a5\u70b9\u6280\u672f\u53eb\u4f5cNetfilterlptables\n    Netfilter\u8d1f\u8d23\u5728\u5185\u6838\u4e2d\u6267\u884c\u5404\u79cd\u6302\u63a5\u7684\u89c4\u5219\uff0c\u8fd0\u884c\u5728\u5185\u6838\u6a21\u5f0f\u4e2d\uff1a\u800clptables\u662f\u5728\u7528\u6237\u6a21\u5f0f\u4e0b\u8fd0\u884c\u7684\u8fdb\u7a0b\uff0c\u8d1f\u8d23\u534f\u52a9\u7ef4\u62a4\u5185\u6838\u4e2dNetfilter\u7684\u5404\u79cd\u89c4\u5219\u8868\u901a\u8fc7\u8005\u7684\u914d\u5408\u6765\u5b9e\u73b0\u6574\u4e2aLinux\u7f51\u7edc\u534f\u8bae\u6218\u4e2d\u7075\u6d3b\u7684\u6570\u636e\u5305\u5904\u7406\u673a\u5236\u3002<\/code><\/pre>\n<h3>6\u3001\u603b\u7ed3<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u8bbe\u5907<\/th>\n<th>\u4f5c\u7528<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>network namespace<\/td>\n<td>\u4e3b\u8981\u63d0\u4f9b\u4e86\u5173\u4e8e\u7f51\u7edc\u8d44\u6e90\u7684\u9694\u79bb\uff0c\u5305\u62ec\u7f51\u7edc\u8bbe\u5907\u3001IPv4\u548cIPv6\u534f\u8bae\u6808\u3001IP\u8def\u7531\u8868\u3001\u9632\u706b\u5899\u3001\/proc\/net\u76ee\u5f55\u3001\/sys\/class\/net\u76ee\u5f55\u3001\u7aef\u53e3\uff08socket\uff09\u7b49\u3002<\/td>\n<\/tr>\n<tr>\n<td>linux Bridge<\/td>\n<td>\u529f\u80fd\u76f8\u5f53\u4e8e\u7269\u7406\u4ea4\u6362\u673a\uff0c\u4e3a\u8fde\u5728\u5176\u4e0a\u7684\u8bbe\u5907\uff08\u5bb9\u5668\uff09\u8f6c\u53d1\u6570\u636e\u5e27\u3002\u5982docker0\u7f51\u6865\u3002<\/td>\n<\/tr>\n<tr>\n<td>iptables<\/td>\n<td>\u4e3b\u8981\u4e3a\u5bb9\u5668\u63d0\u4f9bNAT\u4ee5\u53ca\u5bb9\u5668\u7f51\u7edc\u5b89\u5168\u3002<\/td>\n<\/tr>\n<tr>\n<td>vethpair<\/td>\n<td>\u4e24\u4e2a\u865a\u62df\u7f51\u5361\u7ec4\u6210\u7684\u6570\u636e\u901a\u9053\u3002\u5728Docker\u4e2d\uff0c\u7528\u4e8e\u8fde\u63a5Docker\u5bb9\u5668\u548cLinuxBridge\u3002\u4e00\u7aef\u5728\u5bb9\u5668\u4e2d\u4f5c\u4e3aeth0\u7f51\u5361\uff0c\u53e6\u4e00\u7aef\u5728LinuxBridge\u4e2d\u4f5c\u4e3a\u7f51\u6865\u7684\u4e00\u4e2a\u7aef\u53e3\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e8c\u3001Docker\u7f51\u7edc\u6a21\u5f0f<\/h2>\n<pre><code class=\"language-bash\">    Docker\u4f7f\u7528Linux\u6865\u63a5\u7684\u65b9\u5f0f\uff0c\u5728\u5bbf\u4e3b\u673a\u865a\u62df\u4e00\u4e2aDocker\u5bb9\u5668\u7f51\u6865(docker0)\uff0cDocker\u542f\u52a8\u4e00\u4e2a\u5bb9\u5668\u65f6\u4f1a\u6839\u636eDocker\u7f51\u6865\u7684\u7f51\u6bb5\u5206\u914d\u7ed9\u5bb9\u5668\u4e00\u4e2aIP\u5730\u5740\uff0c\u79f0\u4e3aContainer-IP\uff0c\u540c\u65f6Docker\u7f51\u6865\u662f\u6bcf\u4e2a\u5bb9\u5668\u7684\u9ed8\u8ba4\u7f51\u5173\u3002\u56e0\u4e3a\u5728\u540c\u4e00\u5bbf\u4e3b\u673a\u5185\u7684\u5bb9\u5668\u90fd\u63a5\u5165\u540c\u4e00\u4e2a\u7f51\u6865\uff0c\u8fd9\u6837\u5bb9\u5668\u4e4b\u95f4\u5c31\u80fd\u591f\u901a\u8fc7\u5bb9\u5668\u7684Container-IP\u76f4\u63a5\u901a\u4fe1\u3002\n    Docker\u7f51\u6865\u662f\u5bbf\u4e3b\u673a\u865a\u62df\u51fa\u6765\u7684\uff0c\u5e76\u4e0d\u662f\u771f\u5b9e\u5b58\u5728\u7684\u7f51\u7edc\u8bbe\u5907\uff0c\u5916\u90e8\u7f51\u7edc\u662f\u65e0\u6cd5\u5bfb\u5740\u5230\u7684\uff0c\u8fd9\u4e5f\u610f\u5473\u7740\u5916\u90e8\u7f51\u7edc\u65e0\u6cd5\u901a\u8fc7\u76f4\u63a5Container-IP\u8bbf\u95ee\u5230\u5bb9\u5668\u3002\u5982\u679c\u5bb9\u5668\u5e0c\u671b\u5916\u90e8\u8bbf\u95ee\u80fd\u591f\u8bbf\u95ee\u5230\uff0c\u53ef\u4ee5\u901a\u8fc7\u6620\u5c04\u5bb9\u5668\u7aef\u53e3\u5230\u5bbf\u4e3b\u4e3b\u673a\uff08\u7aef\u53e3\u6620\u5c04\uff09\uff0c\u5373dockerrun\u521b\u5efa\u5bb9\u5668\u65f6\u5019\u901a\u8fc7-p\u6216-P\u53c2\u6570\u6765\u542f\u7528\uff0c\u8bbf\u95ee\u5bb9\u5668\u7684\u65f6\u5019\u5c31\u901a\u8fc7[\u5bbf\u4e3b\u673aIP]:[\u5bb9\u5668\u7aef\u53e3]\u8bbf\u95ee\u5bb9\u5668\u3002<\/code><\/pre>\n<table>\n<thead>\n<tr>\n<th>Docker\u7f51\u7edc\u6a21\u578b<\/th>\n<th>\u914d\u7f6e<\/th>\n<th>\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>host\u6a21\u5f0f<\/td>\n<td>&#8211;network=host<\/td>\n<td>\u5bb9\u5668\u548c\u5bbf\u4e3b\u673a\u5171\u4eabNetworknamespace\uff0c\u7f51\u7edc\u6027\u80fd\u6700\u9ad8<\/td>\n<\/tr>\n<tr>\n<td>containe\u6a21\u5f0f<\/td>\n<td>&#8211;network=container\uff1a\u5bb9\u5668ID<\/td>\n<td>\u5bb9\u5668\u548c\u53e6\u5916\u4e00\u4e2a\u5bb9\u5668\u5171\u4eabNetworknamespace\u3002kubernetes\u4e2d\u7684pod\u5c31\u662f\u591a\u4e2a\u5bb9\u5668\u5171\u4eab\u4e00\u4e2aNetworknamespace\u3002<\/td>\n<\/tr>\n<tr>\n<td>none\u6a21\u5f0f<\/td>\n<td>&#8211;network=none<\/td>\n<td>\u5bb9\u5668\u6709\u72ec\u7acb\u7684Networknamespace\uff0c\u4f46\u5e76\u6ca1\u6709\u5bf9\u5176\u8fdb\u884c\u4efb\u4f55\u7f51\u7edc\u8bbe\u7f6e\uff0c\u5982\u5206\u914dvethpair\u548c\u7f51\u6865\u8fde\u63a5\uff0c\u914d\u7f6eIP\u7b49<\/td>\n<\/tr>\n<tr>\n<td>bridge\u6a21\u5f0f<\/td>\n<td>&#8211;network=bridge<\/td>\n<td>\u5f53Docker\u8fdb\u7a0b\u542f\u52a8\u65f6\uff0c\u4f1a\u5728\u4e3b\u673a\u4e0a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3adocker0\u7684\u865a\u62df\u7f51\u6865\uff0c\u6b64\u4e3b\u673a\u4e0a\u542f\u52a8\u7684Docker\u5bb9\u5668\u4f1a\u8fde\u63a5\u5230\u8fd9\u4e2a\u865a\u62df\u7f51\u6865\u4e0a\u3002\u865a\u62df\u7f51\u6865\u7684\u5de5\u4f5c\u65b9\u5f0f\u548c\u7269\u7406\u4ea4\u6362\u673a\u7c7b\u4f3c\uff0c\u8fd9\u6837\u4e3b\u673a\u4e0a\u7684\u6240\u6709\u5bb9\u5668\u5c31\u901a\u8fc7\u4ea4\u6362\u673a\u8fde\u5728\u4e86\u4e00\u4e2a\u4e8c\u5c42\u7f51\u7edc\u4e2d\u3002\uff08\u9ed8\u8ba4\u4e3a\u8be5\u6a21\u5f0f\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1\u3001HOST\u6a21\u5f0f<\/h3>\n<pre><code class=\"language-bash\">    \u5982\u679c\u542f\u52a8\u5bb9\u5668\u7684\u65f6\u5019\u4f7f\u7528host\u6a21\u5f0f\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5bb9\u5668\u5c06\u4e0d\u4f1a\u83b7\u5f97\u4e00\u4e2a\u72ec\u7acb\u7684NetworkNamespace\uff0c\u800c\u662f\u548c\u5bbf\u4e3b\u673a\u5171\u7528\u4e00\u4e2aNetworkNamespace\u3002\u5bb9\u5668\u5c06\u4e0d\u4f1a\u865a\u62df\u51fa\u81ea\u5df1\u7684\u7f51\u5361\uff0c\u914d\u7f6e\u81ea\u5df1\u7684IP\u7b49\uff0c\u800c\u662f\u4f7f\u7528\u5bbf\u4e3b\u673a\u7684IP\u548c\u7aef\u53e3\u3002\u4f46\u662f\uff0c\u5bb9\u5668\u7684\u5176\u4ed6\u65b9\u9762\uff0c\u5982\u6587\u4ef6\u7cfb\u7edf\u3001\u8fdb\u7a0b\u5217\u8868\u7b49\u8fd8\u662f\u548c\u5bbf\u4e3b\u673a\u9694\u79bb\u7684\u3002\n    \u4f7f\u7528host\u6a21\u5f0f\u7684\u5bb9\u5668\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u5bbf\u4e3b\u673a\u7684IP\u5730\u5740\u4e0e\u5916\u754c\u901a\u4fe1\uff0c\u5bb9\u5668\u5185\u90e8\u7684\u670d\u52a1\u7aef\u53e3\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5bbf\u4e3b\u673a\u7684\u7aef\u53e3\uff0c\u4e0d\u9700\u8981\u8fdb\u884cNAT\uff0chost\u6700\u5927\u7684\u4f18\u52bf\u5c31\u662f\u7f51\u7edc\u6027\u80fd\u6bd4\u8f83\u597d\uff0c\u4f46\u662fdockerhost\u4e0a\u5df2\u7ecf\u4f7f\u7528\u7684\u7aef\u53e3\u5c31\u4e0d\u80fd\u518d\u7528\u4e86\uff0c\u7f51\u7edc\u7684\u9694\u79bb\u6027\u4e0d\u597d\u3002<\/code><\/pre>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/4-25.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/4-25.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h3>2\u3001Containe\u6a21\u5f0f<\/h3>\n<div id=\"rml_readmorelogin_placeholder\" style=\"position:relative;\"><div id=\"rml_fade_content\" style=\"position: absolute;\r\ntop:-10em;\r\nwidth:100%;\r\nheight:10em;\r\nbackground: -webkit-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -moz-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -o-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -ms-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\"><\/div><div class=\"wpf-controller aru_rml_from_in_post\" style=\"background-color:#eeeeee;border:5px solid #cce6ff;\" id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><h2 id=\"Header\">\u67e5\u770b\u66f4\u591a<\/h2><div id=\"Message\"><p>\u8054\u7cfb\u7ba1\u7406\u5458\u5fae\u4fe1tutu19192010\uff0c\u6ce8\u518c\u8d26\u53f7<\/p>\n<\/div><div id=\"StatusBarHeader\"><\/div><form id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><input name=\"post_id\" value=\"970\" type=\"hidden\"\/><input name=\"_init_callback\" value=\"InitLogin\" type=\"hidden\"\/><input name=\"post_id\" value=\"970\" type=\"hidden\"\/><input name=\"rt_ype\" value=\"1\" type=\"hidden\"\/><input name=\"nonce\" value=\"98e47a4ee7\" type=\"hidden\"\/><input name=\"_wpnonce\" value=\"2f39b0f723\" type=\"hidden\"\/><input name=\"_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_proxy_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_view\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginView\" type=\"hidden\"\/><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\" width=\"400px\"><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Username:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"username\" value=\"\" type=\"text\"\/><\/td><\/tr><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Password:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"password\" value=\"\" type=\"password\"\/><\/td><\/tr><\/tbody><\/table><p class=\"wpf-table-placeholder submit\"><button 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[&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":977,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[120],"tags":[21,133,134,135,19,22,132,20],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/970"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=970"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/970\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/media\/977"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}