容器网络之 veth设备
创建命名空间
# ip netns add mhc
# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
link/ether dc:fe:07:d6:10:67 brd ff:ff:ff:ff:ff:ff
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DORMANT qlen 1000
link/ether 2a:3d:4b:78:d6:34 brd ff:ff:ff:ff:ff:ff
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:ea:e7:08 brd ff:ff:ff:ff:ff:ff
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:ea:e7:08 brd ff:ff:ff:ff:ff:ff
6: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT
link/ether 02:42:f1:10:e3:bc brd ff:ff:ff:ff:ff:ff
10: veth879059f@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT
link/ether f2:5a:39:f5:94:63 brd ff:ff:ff:ff:ff:ff link-netnsid 0
# ip netns exec mhc ip link show
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
添加一对veth设备
ip link add veth0 type veth peer name veth1
# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
link/ether dc:fe:07:d6:10:67 brd ff:ff:ff:ff:ff:ff
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DORMANT qlen 1000
link/ether be:6d:49:a4:79:2e brd ff:ff:ff:ff:ff:ff
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:ea:e7:08 brd ff:ff:ff:ff:ff:ff
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:ea:e7:08 brd ff:ff:ff:ff:ff:ff
6: docker0: <BROADCAST,MUL# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
link/ether dc:fe:07:d6:10:67 brd ff:ff:ff:ff:ff:ff
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DORMANT qlen 1000
link/ether be:6d:49:a4:79:2e brd ff:ff:ff:ff:ff:ff
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:ea:e7:08 brd ff:ff:ff:ff:ff:ff
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:ea:e7:08 brd ff:ff:ff:ff:ff:ff
6: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT
link/ether 02:42:f1:10:e3:bc brd ff:ff:ff:ff:ff:ff
10: veth879059f@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT
link/ether f2:5a:39:f5:94:63 brd ff:ff:ff:ff:ff:ff link-netnsid 0
27: veth1@veth0: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
link/ether 82:72:ea:99:16:2c brd ff:ff:ff:ff:ff:ff
28: veth0@veth1: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
link/ether 56:44:ef:da:0f:42 brd ff:ff:ff:ff:ff:ff
TICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT
link/ether 02:42:f1:10:e3:bc brd ff:ff:ff:ff:ff:ff
10: veth879059f@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT
link/ether f2:5a:39:f5:94:63 brd ff:ff:ff:ff:ff:ff link-netnsid 0
27: veth1@veth0: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
link/ether 82:72:ea:99:16:2c brd ff:ff:ff:ff:ff:ff
28: veth0@veth1: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
link/ether 56:44:ef:da:0f:42 brd ff:ff:ff:ff:ff:ff
将veht1 移到另一个namespace
ip link set veth1 netns mhc
# ip netns exec mhc ip link show
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
27: veth1@if28: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
link/ether 82:72:ea:99:16:2c brd ff:ff:ff:ff:ff:ff link-netnsid 0
设置ip地址
# ip netns exec mhc ip addr add 10.1.1.1/24 dev veth1
# ip addr add 10.1.1.2/24 dev veth0
启用设备
# ip netns exec mhc ip link set dev veth1 up
# ip link set dev veth0 up
# ping 10.1.1.1
PING 10.1.1.1 (10.1.1.1) 56(84) bytes of data.
64 bytes from 10.1.1.1: icmp_seq=1 ttl=64 time=0.065 ms
64 bytes from 10.1.1.1: icmp_seq=2 ttl=64 time=0.076 ms
# ip netns exec mhc ping 10.1.1.2
PING 10.1.1.2 (10.1.1.2) 56(84) bytes of data.
64 bytes from 10.1.1.2: icmp_seq=1 ttl=64 time=0.088 ms
64 bytes from 10.1.1.2: icmp_seq=2 ttl=64 time=0.040 ms
如何查看对端
# ethtool -S veth0
NIC statistics:
peer_ifindex: 27
# ip netns exec mhc ip link|grep 27
27: veth1@if28: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT qlen 1000
删除veth设备(同时在另一个nemespace的设备也被删除了)
# ip link delete veth0
删除网络命名空间
# ip netns ls
mhc (id: 1)
# ip netns delete mhc
容器网络之 veth设备的更多相关文章
- [Linux网络、命名空间、veth设备对、docker的host模式、container模式、none模式、brideg模式、网桥的增删查，容器与网桥的连接断开]
[Linux网络.命名空间.veth设备对.docker的host模式.container模式.none模式.brideg模式.网桥的增删查,容器与网桥的连接断开] 网络名称空间 为了支持网络协议栈的 ...
- 【Networking】容器网络大观 && SDN 资料汇总
SDNLAB技术分享(十五):容器网络大观 SDNLAB君• 16-06-17 •2957 人围观 编者按:本文系SDNLAB技术分享系列,本次分享来自SDN撕X群(群主:大猫猫)群直播,我们希望 ...
- [Kubernetes]浅谈容器网络
Veth Pair 这部分内容主要介绍一个设备: Veth Pair . 作为一个容器,它可以声明直接使用宿主机的网络栈,即:不开启 Network Namespace .在这种情况下,这个容器启动后 ...
- 容器网络——从CNI到Calico
从容器诞生开始,存储和网络这两个话题就一直为大家津津乐道.我们今天这个环境下讲网络这个问题,其实是因为容器对网络的需求,和传统物理.虚拟环境对网络环境需求是有差别的,主要面临以下两个问题: 过去Iaa ...
- docker容器网络—单主机容器网络
当我们在单台物理机或虚拟机中运行多个docker容器应用时,这些容器之间是如何进行通信的呢,或者外界是如何访问这些容器的? 这里就涉及了单机容器网络相关的知识.docker 安装后默认 情况下会在宿主 ...
- Docker容器网络篇
Docker容器网络篇 作者:尹正杰 版权声明:原创作品,谢绝转载!否则将追究法律责任. 一.Docker的网络模型概述 如上图所示,Docker有四种网络模型: 封闭式网络(Closed conta ...
- 【转】理解Docker容器网络之Linux Network Namespace
原文:理解Docker容器网络之Linux Network Namespace 由于2016年年中调换工作的原因,对容器网络的研究中断过一段时间.随着当前项目对Kubernetes应用的深入,我感觉之 ...
- Docker容器网络-实现篇
通常,Linux容器的网络是被隔离在它自己的Network Namespace中,其中就包括:网卡(Network Interface).回环设备(Loopback Device).路由表(Routi ...
- 一文读懂 Kubernetes 容器网络
点击上方"开源Linux",选择"设为星标" 回复"学习"获取独家整理的学习资料! 在Kubernetes中要保证容器之间网络互通,网络至关 ...
随机推荐
- 12.21 Gson的常用用法 功能介绍 特点
使用谷歌GSON常用语法: 功能:映射Java Object与json格式的数据 1.通过Annotation注解来声明 2.支持自定义属性名称 3.支持包含或排除属性 4.支持自定义接口自己完成解析 ...
- CentOS下Docker的安装及国内镜像配置
系统,CentOS 7,最小化安装. 升级包 >$ sudo yum upgrade 安装Docker >$ sudo yum install docker 下面开始配置国内镜像.国外的实 ...
- mysql "Your password has expired...."错误解决方案
mysql -u root -p 进入mysql命令界面,然后输入 set password = password("新密码"); 参考:http://blog.csdn.net/ ...
- oracle创建触发器
create or replace trigger 触发器名字 触发时间 触发事件 after(before) insert or update or delete on 表名 for each r ...
- Beta发布
作业要求[https://edu.cnblogs.com/campus/nenu/2018fall/homework/2408] 视频展示 链接[https://www.cnblogs.com/erc ...
- Oracle（一）安装
一.到官网或者哪里去下载Oracle,我下的是winX64的11g版本 官网:https://www.oracle.com/technetwork/database/enterprise-editio ...
- SQL优化（3）：使用explain了解SQL性能-part2
接上文,上文对type列用实例做了说明,本文对Extra列进行一些说明. Extra列 Using filesort 前文说,需要对所有的查询结果进行一次排序,例如当使用order by时.但是若查询 ...
- OpenCV - Linux（Ubuntu 16.04）中安装OpenCV + OpenCV_Contrib
近两个月来接触了Linux系统,在老板的建议下翻了Ubuntu的牌子,我安装的版本是16.04,用习惯之后感觉蛮好的,比Windows要强.好啦,废话不说啦,下面开始说在Ubuntu中安装OpemCV ...
- AS中几个较好的插件
Android ButterKnife Zelezny 自动生成依赖注入代码 Android Parcelable code generator 自动生成Parcelable代码 Selecto ...
- windows7下安装python环境和django
1.安装python 1.1.首先访问http://www.python.org/download/去下载最新的python版本. 根据计算机位数选择对应的版本比如我的机器是64位的,我就下载这个安装 ...