dns

DNS lookup failed: address 'your.proxy.com' not found: [Errno -5] No address associated with hostname

由 好久不见. 提交于 2020-01-15 12:24:08
问题 This question is an extension of the resolved question here, ie. Crawling linkedin while authenticating with scrapy. Crawling LinkedIn while authenticated with Scrapy @Gates While I keep the base of the script the same, only adding my own session_key and session_password - and after changing the start url particular to my use-case, as below. class LinkedPySpider(InitSpider): name = 'Linkedin' allowed_domains = ['linkedin.com'] login_page = 'https://www.linkedin.com/uas/login' start_urls=[

List of IP address for a host

由 假如想象 提交于 2020-01-15 09:52:09
问题 We could see multiple ip addresses for a single host like facebook, google etc. My question is why a host maintains so many ip addresses ? what is the purpose for it? Does it wont overlap with any other Public addresses. 回答1: The purpose is to distribuite the work load on different datacenter on different geographical areas. They use a single domain name (like facebook.com) to hide a big network of datacenter ready to reply to requests. The real host to which you will be connected is decided

List of IP address for a host

由 雨燕双飞 提交于 2020-01-15 09:50:16
问题 We could see multiple ip addresses for a single host like facebook, google etc. My question is why a host maintains so many ip addresses ? what is the purpose for it? Does it wont overlap with any other Public addresses. 回答1: The purpose is to distribuite the work load on different datacenter on different geographical areas. They use a single domain name (like facebook.com) to hide a big network of datacenter ready to reply to requests. The real host to which you will be connected is decided

SSL Subdomain redirects to Original Domain

由 给你一囗甜甜゛ 提交于 2020-01-15 09:29:55
问题 I have a domain.com (main domain), works perfectly with https://domain.com I also have a Subdomain store.domain.com. It works good only with HTTP, such as http://store.domain.com. When I add HTTPS to subdomain, it automatically redirects to Main domain. Such as https//:store.domain.com --->redirects--> https://domain.com I have a Wildcard SSL for domain.com Any help how to make https//:store.domain.com work properly with HTTPS without being redirected to main domain ? 来源： https:/

DNS解析

由 旧巷老猫 提交于 2020-01-15 07:48:10
https://cloud.tencent.com/developer/article/1009799 用户在浏览器的地址栏中敲入了网站的网址 ，会发生哪些事情呢？ 用户在浏览器的地址栏中敲入了网站的网址 浏览器查找域名的IP地址 找到ip地址后，浏览器给web服务器发送一个HTTP请求 服务器“处理”请求 服务器发回一个HTML响应 浏览器开始显示HTML 大概就是这样的过程，下面我们来仔细的分析下浏览器是如何查找到域名对应的ip地址的。 DNS域名解析过程 　　当用户在浏览器中输入ke.qq.com并按下回车键后： 第1步，查找浏览器缓存。 浏览器会检查缓存中有没有这个域名对应的解析过的IP地址，如果缓存中有，这个解析过程就将结束。浏览器缓存域名也是有限制的，不仅浏览器缓存大小有限制，而且缓存的时间也有限制，通常情况下为几分钟到几小时不等。这个缓存时间太长和太短都不好，如果缓存时间太长，一旦域名被解析到的IP有变化，会导致被客户端缓存的域名无法解析到变化后的IP地址，以致该域名不能正常解析，这段时间内有可能会有一部分用户无法访问网站。如果时间设置太短，会导致用户每次访问网站都要重新解析一次域名。 第2步，查找系统缓存。 如果用户的浏览器缓存中没有，浏览器会查找操作系统缓存中是否有这个域名对应的DNS解析结果。其实操作系统也会有一个域名解析的过程，在Windows中可以通过C:

Human readable form of DNS lookup

由 血红的双手。 提交于 2020-01-15 07:47:30
问题 I have got a very simple idea in mind that i want to try out. Say i have a browser, chrome for instance, and i want to search for the ip of the domain name, say www.google.com . I use windows 7 and i have set the dns lookup properties to manual and have given the address 127.0.0.1 where my server (written in Python is running). I started my server and i could see the dns query but it was very weird as in it is showing faces like this: WAITING FOR CONNECTION......... .........recieved from : (

Old parking page info is mixed in with search results for a newly crawled site

由 落爺英雄遲暮 提交于 2020-01-15 05:23:08
问题 I had my domain set to a parking page with my registrar. The nameservers have been changed (I'm using Azure DNS), I've updated robots.txt and submitted a sitemap. I've requested Google to crawl my site, and we're now showing in Google's search results. The problem is that for every title link that shows in the search results, some info from the parking page is tacked on to the end. So the result link might say About Us | Example Company - example.com - nameOfRegistrar . About Us | Example

Why isn't Kubernetes service DNS working?

由 孤人 提交于 2020-01-15 04:20:28
问题 I have set up DNS in my Kubernetes (v1.1.2+1abf20d) system, on CoreOS/AWS, but I cannot look up services via DNS. I have tried debugging, but cannot for the life of me find out why. This is what happens when I try to look up the kubernetes service, which should always be available: $ ~/.local/bin/kubectl --kubeconfig=/etc/kubernetes/kube.conf exec busybox-sleep -- nslookup kubernetes.default Server: 10.3.0.10 Address 1: 10.3.0.10 ip-10-3-0-10.eu-central-1.compute.internal nslookup: can't

Why isn't Kubernetes service DNS working?

由 ◇◆丶佛笑我妖孽 提交于 2020-01-15 04:20:13
问题 I have set up DNS in my Kubernetes (v1.1.2+1abf20d) system, on CoreOS/AWS, but I cannot look up services via DNS. I have tried debugging, but cannot for the life of me find out why. This is what happens when I try to look up the kubernetes service, which should always be available: $ ~/.local/bin/kubectl --kubeconfig=/etc/kubernetes/kube.conf exec busybox-sleep -- nslookup kubernetes.default Server: 10.3.0.10 Address 1: 10.3.0.10 ip-10-3-0-10.eu-central-1.compute.internal nslookup: can't

ATS功能介绍

由 北城以北 提交于 2020-01-15 01:09:43
识点 功能 1.Traffic Server缓存 ATS 缓存包含一个高速的对象数据库，数据库根据 URL 和相关头部来索引对象，对于同一对象可以缓存不同版本（如不同的编码、语言）。 当缓存空间满后，TS 会移除过期的数据。 当磁盘出错时，TS 将不再使用该块磁盘，转而使用剩下的磁盘。所有磁盘都出错时，TS 将切换至 proxy-only 模式，即只代理，不缓存。 可分区，即可以给指定的协议和源服务器划分一定数量的磁盘空间 2.RAM 缓存 内存缓存区储存比较热门的对象，在流量的高峰期时能加快处理速度和降低磁盘负载。 3.主机数据库 储存 DNS 信息，方便主机名到 IP 地址的快速转换 储存每个主机的 HTTP 版本，方便高级协议特性的使用 储存主机的可靠性和可用性信息 4.DNS 解析器 TS 原生实现了 DNS 解析器，不依赖较慢的传统解析库。同时也降低了 DNS 的流量。 5.Traffic Server 进程 traffic_server 进程负责接受连接，处理协议请求，然后从缓存或源服务器获取对象并返回 traffic_manager 进程是 TS 的命令和控制设施，负责启动、监控和配置 traffic_server 进程，它也负责代理的端口配置、统计信息的接口、集群管理和虚拟 IP 的故障转移。 如果 traffic_manager 检测到 traffic
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