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calico | ipip 宿主机网卡抓包｜容器IP

https kubernetes 网络安全 linux tcp/ip

In a Calico network, each host acts as a gateway router for the workloads that it hosts. In container deployments, Calico uses 169.254.1.1 as the address for the Calico router. By using a link-local address, Calico saves precious IP addresses and avoids burdening the user with configuring a suitable address.

2022-06-09

8160

Debugging Kubernetes Networking

kubernetes tcp/ip

How to Find a Needle in a Virtualized Network

2022-06-09

3290

kernel|network| Linux Networking Stack: Sending Data

udp socket编程 kernel tcp/ip 编程算法

This blog post explains how computers running the Linux kernel send packets, as well as how to monitor and tune each component of the networking stack as packets flow from user programs to network hardware.

2022-04-18

1.8K0

cni | pod ip 地址分配过程

tcp/ip 容器 node.js kubernetes linux

One of the core requirements of the Kubernetes networking model is that every pod should get its own IP address and that every pod in the cluster should be able to talk to it using this IP address. There are several network providers (flannel, calico, canal, etc.) that implement this networking model.

2022-04-18

1.8K0

bpf | eXpress Data Path| XDP

kernel processing tcp/ip 编程算法

XDP or eXpress Data Path provides a high performance, programmable network data path in the Linux kernel as part of the IO Visor Project. XDP provides bare metal packet processing at the lowest point in the software stack which makes it ideal for speed without compromising programmability. Furthermore, new functions can be implemented dynamically with the integrated fast path without kernel modification. Other key benefits of XDP includes the following:

2022-04-18

6400

ipip | Routing Encapsulation

ipv6 tcp/ip 网站

Like a proxy, tunneling allows you to pass traffic from a filtered IP to another destination. Tunnels are much like a V**, except that not every tunnel involves encryption. A machine that is "tunneled" into another network has a virtual interface configured with an IP that is not local, but exists on a remote network. This traffic is forwarded in the form of packets at the kernel level, and therefore not susceptible to server interruptions.

2022-04-18

6300

Calico IPAM｜Explained and Enhanced｜解释与增强

tcp/ip kubernetes node.js

Managing IP addresses is an essential, but often overlooked, aspect of container networking. Each networking plugin has its own approach to IP address management (IPAM, for short). The simplest approaches, such as that built into Kubernetes, assume the static allocation of a fixed set of addresses to each node. More advanced solutions, such as Calico, provide users more control and allow much finer-grained, dynamic IPAM.

2022-04-18

1K0

cni | 容器网络接口规范｜Container Networking Interface Specification

容器 kubernetes ipv6 tcp/ip linux

Application containers on Linux are a rapidly evolving area, and within this area networking is not well addressed as it is highly environment-specific. We believe that many container runtimes and orchestrators will seek to solve the same problem of making the network layer pluggable.

2022-04-18

8310

cni | host-local IP 地址管理插件

编程算法 ipv6 dns tcp/ip

host-local IPAM allocates IPv4 and IPv6 addresses out of a specified address range. Optionally, it can include a DNS configuration from a resolv.conf file on the host.

2022-04-18

1K0

IPC｜网络套接字

udp tcp/ip 缓存

为了访问由UDP提供的服务，你需要像以前一样使用套接字和close系统调用，但你需要用两个

2022-04-18

1K0

查阅interface GigabitEthernet 1/0/3 含义了解

tcp/ip https 网络安全

1表示第一个板卡槽位，一般1U设备都是1.如果是模块化设备就是机框上的板卡槽位数；

2022-01-17

7.1K0

虚拟网络学习

tcp/ip 容器 linux

overlay 网络是在Underlay网络上构建的一个逻辑网络，满足数据中心构建大二层网络的要求。

2022-01-17

4920

数据中心组网大二层网络了解

https 网络安全迁移 tcp/ip html

为了实现业务的灵活变更，虚拟机动态迁移已经成为了一个常态性的业务。虚拟机动态迁移是指在保证虚拟机正常运行的同时，将虚拟机从一个物理服务器移动到另一个物理服务器的过程，该过程对于最终用户来说是无感知的，使得管理员在不影响用户正常使用的情况下灵活调配服务器资源或者对物理服务器进行维修和升级。虚拟机动态迁移的关键是要保证在迁移时，虚拟机上的业务不会中断，这就要求虚拟机的IP地址、MAC地址等参数保持不变，所以虚拟机的迁移只能在同一个二层域内进行，而不能跨二层域迁移，如图2-23所示。

2022-01-17

1.8K0

Linux interfaces 虚拟网络类型了解01

https 网络安全 linux tcp/ip

在OSI 模型定义中，数据链路层/物理层和传输层/网络层执行的任务非常相似：它们都提供了数据传输的手段，即沿某条路径将数据从源点发往目的地的方法，不同之处在于，数据链路层/物理层提供跨物理路径的通信服务，而传输曾/网络层则是提供由一连串的数据链路组成的逻辑路径或虚拟路径的通信服务。

2022-01-17

9740

负载均衡负载均衡缓存 tcp/ip http

Elastic Load Balancing 在一个或多个可用区中的多个目标（如 EC2 实例、容器和 IP 地址）之间自动分配传入的流量。它会监控已注册目标的运行状况，并仅将流量传输到运行状况良好的目标。Elastic Load Balancing 根据传入流量随时间的变化对负载均衡器进行扩展。它可以自动扩展来处理绝大部分工作负载。

2022-01-17

2K0

eBay基于Istio的应用网关的探索和实践

tcp/ip SSL 证书 https 腾讯云测试服务 kubernetes

7月17日，在Cloud Native Days China云原生多云多集群专场，eBay软件工程师陈佑雄发表了《eBay基于Istio的应用网关的探索和实践》主题演讲，分享了eBay在多集群，多环境，大规模的场景下，Istio落地实践的探索和实践。

2021-08-26

1.3K0

BGP in the Data Center

摘自：https://arthurchiao.art/blog/bgp-in-data-center-zh/#chap_1

2021-08-26

2.5K0

Network Address Translation

nat NAT 网关 tcp/ip

With Network Address Translation (NAT), IP addresses are mapped from one realm to another, in an attempt to provide transparent routing to hosts. Traditionally, NAT devices are used to connect an isolated address realm with private unregistered addresses to an external realm with globally unique registered addresses. There are many variations of address translation. For the project, you are going to implement Basic NAT [4].

2019-09-10

6430

Understanding Kubernetes Kube-Proxy

网络安全 kernel tcp/ip kubernetes linux

Kubernetes is a complicated system with multiple components interacting with each other in complex ways. As you may already know, Kubernetes is made of master and node components.

2019-09-10

2K0

ElasticSearch 状态查询Cat接口

node.js http tcp/ip

状态查询Cat接口节点信息接口 GET _cat/nodes?v 列出所有node, 并展示node所在机器的运行状态信息. ip heap.percent ram.percent

2019-05-28

1.5K0

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