dns | 易学教程

ibatis domain modelling

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问题 I am working on the domain model for a project. I have a class named user that has a class named UserType as one of the properties. I know when I want to select all users, I will use joins to pick up all corresponding usertypes. How do I do inserts? Do I have to write a handler for userType? Or can I do something like INSERT INTO users(... usertype_id ...) VALUES(... #{usertype.usertype_id}...) Please help; I have spent the whole day trying to figure this out. I am using ibatis 3.0 and I am

Google Domain - How to remove/disable default domain after adding custom domain?

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问题 I have added custom domain in firebase hosting and still I am able to access the default domain created by firebase. I want to remove that default domain for SEO perspective. How do we remove it? 回答1: firebaser here There is no way to remove the *.firebaseapp.com domain from your Firebase Hosting app. 来源： https://stackoverflow.com/questions/45058710/google-domain-how-to-remove-disable-default-domain-after-adding-custom-domain

Need regex to get domain + subdomain

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问题 So im using this function here: function get_domain($url) { $pieces = parse_url($url); $domain = isset($pieces['host']) ? $pieces['host'] : ''; if (preg_match('/(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$/i', $domain, $regs)) { return $regs['domain']; } return false; } $referer = get_domain($_SERVER['HTTP_REFERER']); And what i need is another regex for it, if someone would be so kind to help. Exactly what i need is for it to get the whole domain, including subdomains. Lets say as a

带你探索网络里的那些秘密

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背景网络，网络... 虽然只是一个简单的名词，但是她的背后却掩藏着太多太多的故事以及知识。穷其编程的一生，或许也只能探索出那冰山一角，嗨... 小时虽知，学海无涯，却毫不知意。玩乃天性，却空流时光。憾... so，矫情之余，我们来探索一下网络究竟是怎么传输的。概述探索网络的范围，都在上图有所展示（另存为看大图）。正文一. 生成HTTP请求消息打开一个网站，都是从浏览器中输入网址开始，我们的探索也是从这里开始。 https: 是协议，告诉浏览器我们要访问的目标，而https: 代表的就是访问Web服务器，当然也有其他的协议。比如ftp:访问的就是FTP服务器等。 sexyphoenix.github.io 是Web服务器域名，可以告诉我们在哪里可以找到Web服务器。 about/ 是Web服务器里面的文件路径名，这里的about是目录名，全路径可能是about/index.md，而index.md应该被github掩藏了。浏览器首先要做的就是对URL进行解析，知道我们要访问的是sexyphoenix.github.io这个Web服务器上文件路径为about目录下的默认文件。知道了要访问的目标，接下来浏览器就要生成HTTP的请求信息，介绍到这，就要聊一聊HTTP协议了。 HTTP协议规定了客户端和服务器通信的内容和步骤，简单来说，就是两个部分 “对什么” 做

How can I merge these 3 SPF txt records

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问题 I have 3 SPF records: "v=spf1 include:spf.protection.outlook.com -all" "v=spf1 a ptr include:authsmtp.com ?all" "v=spf1 a mx include:spf.mtasv.net ~all" How can I merge them all together into one txt record? 回答1: The merged record would look like this: v=spf1 a mx ptr include:spf.protection.outlook.com include:authsmtp.com include:spf.mtasv.net -all You'll have to decide which of the all mechanisms you want to use, since you can only have one in a SPF record. I have included the -all since it

Docker daemon and DNS

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问题 I am trying to force the docker daemon to use my DNS server which is binded to bridge0 interface. I have added --dns 172.17.42.1 in my docker_opts but no success DNS server reply ok with dig command: dig @172.17.42.1 registry.service.consul SRV +short 1 1 5000 registry2.node.staging.consul. But pull with this domain fails: docker pull registry.service.consul:5000/test FATA[0000] Error: issecure: could not resolve "registry.service.consul": lookup registry.service.consul: no such host PS: By

Mail of PHP, DNS request timed out, and FQDN

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问题 I want to make mail() of PHP work in my Windows Server 2012 R2 . To this end, I first installed SMTP by following this page. One thing that confuses me is the Full-qualified domain name . WIN-RFELH8GM0KN is what it proposes by default. My server hosts several websites, does anyone know which website I should specify here? I did not change this, as a consequence, mail www.google.com in nslookup returns DNS request timed out. So is it an error? Of cause, my test.php does not send the mail: <

check/upload images to domain folder from subdomain

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问题 I have domain www.mysite.com and subdomain api1.mysite.com. There (in domain) are several folders and folder "images". There also is a folder called api1 which is subdomain's folder. What I can't figure out, is how to locate from subdomain a domian's folder "images" and upload files there or check if they exist. I'm using php. e.g. this line is located in one of the files in subdomain folder and "images" folder is one level up - in domain folder. $dir_img_small = file_exists('images/users

file_get_contents fails with “getaddrinfo failed: no address associated with hostname”

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问题 I'm trying to get the page from another host. I do as hph manual says: $page = file_get_contents('http://www.example.com/'); echo $page; But it fails and in apache log i get the following: [Mon Oct 12 18:58:47.676454 2015] [:error] [pid 2971] [client 127.0.0.1:49434] PHP Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /var/www/html/digest/ftry.php on line 2 [Mon Oct 12 18:58:47.704659 2015] [:error] [pid 2971] [client 127.0.0

linux中必会的目录

第1章 find 命令扩展 1.1 方法一 |xargs 通过 |xargs 将前面命令的执行结果传给后面。 [root@znix ~]# find /clsn/ -type f -name "*.sh" |xargs ls -l -rw-r--r--. 1 root root 7 Aug 17 17:00 /clsn/test/del.sh -rw-r--r--. 1 root root 8 Aug 17 19:35 /clsn/test.sh -rw-r--r--. 1 root root 7 Aug 17 17:00 /clsn/t.sh 1.2 方法二 $() $() 先运行里面的命令，把显示到屏幕上的结果留下来 [root@znix ~]# ls -l $(find /clsn/ -type f -name "*.sh") -rw-r--r--. 1 root root 7 Aug 17 17:00 /clsn/test/del.sh -rw-r--r--. 1 root root 8 Aug 17 19:35 /clsn/test.sh -rw-r--r--. 1 root root 7 Aug 17 17:00 /clsn/t.sh 1.3 方法三 -exec {} \; -exec 是 find 里面自带参数， {} 表示 find 命令找到的文件 [root