gateway

What different between Master node gateway and other node gateway in elasticsearch? Both of them store meta data, isn't it?

大兔子大兔子 提交于 2019-11-28 23:07:04
问题 What different between Master node gateway and other node gateway in elasticsearch? Both of them store meta data, isn't it? Meta data, elasticsearch called, what information we can get from it? 回答1: The master node is the same as any other node in the cluster, except that it has been elected to be the master. It is responsible for coordinating any cluster-wide changes, such as the addition or removal of a node, creation, deletion or change of state (i.e. open/close) of an index, and the

VXLAN实验

本小妞迷上赌 提交于 2019-11-28 22:41:11
拓扑图: SPINE配置: hostname SPINE-1 vdc SPINE-1 id 1 limit-resource vlan minimum 16 maximum 4094 limit-resource vrf minimum 2 maximum 4096 limit-resource port-channel minimum 0 maximum 511 limit-resource u4route-mem minimum 248 maximum 248 limit-resource u6route-mem minimum 96 maximum 96 limit-resource m4route-mem minimum 58 maximum 58 limit-resource m6route-mem minimum 8 maximum 8 nv overlay evpn feature ospf feature bgp feature pim feature vn-segment-vlan-based feature nv overlay username admin password 5 $5$bjUuS34N$DaWFpLKAxc.89ZQkEif9YY8a/JukfKjuyzDMDojrB. B role network-admin ip domain-lookup

gRPC helloworld service, RESTful JSON API gateway and swagger UI

独自空忆成欢 提交于 2019-11-28 19:55:09
概述 本篇博文完整讲述了如果通过 protocol buffers 定义并启动一个 gRPC 服务,然后在 gRPC 服务上提供一个 RESTful JSON API 的反向代理 gateway,最后通过 swagger ui 来提供 RESTful JSON API 的说明,完整代码 helloworld_restful_swagger 。 Helloworld gRPC Service 参考 gRPC Quick Start for Python 。 Install gRPC 安装 gRPC 运行命令, $ python -m pip install grpcio 安装 gRPC 工具箱 Python 的 gRPC 工具箱包括 protol buffer 编译器 protoc 和一些特定插件用于从 .proto 服务定义文件生成 gRPC server 和 client 的代码。 运行命令, $ python -m pip install grpcio-tools 服务定义文件 helloworld.proto 在 pb 目录下新建文件 helloworld.proto,然后在其中使用 protocol buffers 语法来编写 gRPC 服务定义。文件内容如下: syntax = "proto3"; package helloworld; // The greeting

springcloud(十):服务网关zuul

怎甘沉沦 提交于 2019-11-28 19:40:33
前面的文章我们介绍了,Eureka用于服务的注册于发现,Feign支持服务的调用以及均衡负载,Hystrix处理服务的熔断防止故障扩散,Spring Cloud Config服务集群配置中心,似乎一个微服务框架已经完成了。 我们还是少考虑了一个问题,外部的应用如何来访问内部各种各样的微服务呢?在微服务架构中,后端服务往往不直接开放给调用端,而是通过一个API网关根据请求的url,路由到相应的服务。当添加API网关后,在第三方调用端和服务提供方之间就创建了一面墙,这面墙直接与调用方通信进行权限控制,后将请求均衡分发给后台服务端。 为什么需要API Gateway 1、简化客户端调用复杂度 在微服务架构模式下后端服务的实例数一般是动态的,对于客户端而言很难发现动态改变的服务实例的访问地址信息。因此在基于微服务的项目中为了简化前端的调用逻辑,通常会引入API Gateway作为轻量级网关,同时API Gateway中也会实现相关的认证逻辑从而简化内部服务之间相互调用的复杂度。 2、数据裁剪以及聚合 通常而言不同的客户端对于显示时对于数据的需求是不一致的,比如手机端或者Web端又或者在低延迟的网络环境或者高延迟的网络环境。 因此为了优化客户端的使用体验,API Gateway可以对通用性的响应数据进行裁剪以适应不同客户端的使用需求。同时还可以将多个API调用逻辑进行聚合

Golang Gateway API 搭建教程

久未见 提交于 2019-11-28 18:43:15
原文链接 随着微服务的兴起,行业里出现了非常多优秀的微服务网关框架,今天教大家搭建一套国人,用Golang写的微服务网关框架。 这里啰嗦一句,可能到今天还有人不理解什么是微服务,为什么要用微服务。目前网上相对比较模糊,没有精确的定义,但大家的意思都差不多,这里个人通俗描述,就是小项目发展到大项目过程中,出于已维护,与稳定性等考虑,将一个整体项目分为多个微小服务。 微服务网关的作用是在用户第一个网关服务器,你按照业务服务相关需求,给网关分流,相比云主机厂商提供的负载均衡器,强大在于你可以根据自己业务去分流,同时还以可以实现鉴权、校验、聚合、缓存等自定义服务,而云主机的负载均衡器只是一个简单按照流量给你负载均衡请求,不具有自定义编程性质。 接下来教如何安装,以及注意事项。 地址: https://github.com/fagongzi/gateway 功能: 流量控制 熔断 负载均衡 服务发现 插件机制 路由(分流,复制流量) API 聚合 API 参数校验 API 访问控制(黑白名单) API 默认返回值 API 定制返回值 API 结果Cache JWT Authorization API Metric导入Prometheus API 失败重试 后端server的健康检查 开放管理API(GRPC、Restful) 支持websocket 支持在线迁移数据 1.下载 https:/

Linux查看域名解析的IP

Deadly 提交于 2019-11-28 18:42:02
一、Linux系统 1、查看IP ifconfig 2、查看gateway netstat -rn 3、查看dns cat /etc/resolv.conf 二、window系统 1、window查看ip ipconfig 2、查看gateway ipconfig 3、查看本地dns ipconfig/all 域名解析 nslookup 域名 dig 域名 dig +trace 域名 来源: https://www.cnblogs.com/2018-05-9-ygk/p/11939241.html

How do i get the default gateway in LINUX given the destination?

落爺英雄遲暮 提交于 2019-11-28 17:13:19
I'm trying to get the default gateway, using the destination 0.0.0.0 I used this command: netstat -rn | grep 0.0.0.0 And it returned this list: **Destination Gateway Genmask Flags MSS Window irtt Iface<br> 10.9.9.17 0.0.0.0 255.255.255.255 UH 0 0 0 tun0<br> 133.88.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0<br> 0.0.0.0 133.88.31.70 0.0.0.0 UG 0 0 0 eth0**<br> My goal here is to ping the default gateway using destination 0.0.0.0 ; thus, that is 133.88.31.70 ; but this one returns a list because of using grep . How do i get the default gateway only? I will need it for my bash script to identify if net

Receive SMS messages by web application

落花浮王杯 提交于 2019-11-28 16:54:48
We are building a web app that should be able to receive SMS messages and store the information contained in it in database. Which methods have you used? Which service providers are out there that can assist? http://www.clickatell.com/ are massive and it works exactly like it says on the tin. You pay for a phone number and sms messages sent to that end up hitting a URL on your site to deliver them just like someone posting a form. I'd recommend using a service such as TextMarks . TextMarks is free, and lets you pick a keyword for your service that allows users to route messages to you through

Spring Cloud Gateway报错:Unable to start embedded Tomcat

风流意气都作罢 提交于 2019-11-28 16:45:25
最近搭建Spring Cloud Gateway时启动项目出现如下报错信息: 1 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2 2019-08-05 20:47:09.045 ERROR 10244 --- [ main] o.s.boot.SpringApplication : Application run failed 3 4 org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat 5 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:155) ~

What is the difference between Facade and Gateway design patterns?

我与影子孤独终老i 提交于 2019-11-28 15:56:47
问题 or Facade==Gateway? 回答1: Reviewing Facade in the GoF book and the link in another answer to Martin Fowler's Gateway, it appears that their focus is in opposite directions. Facade provides a simple uniform view of complex internals to (one or more)external clients; Gateway provides a simple uniform view of external resources to the internals of an application. This distinction lets us focus on which is more important in a design : With the Facade, the external system is our customer; it is