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@ Zheng yu Summary I. symptom: Java httpclient initiates an HTTP request to the WebService interface under the x××× open. x××. com domain name from the master station data center, which is extremely slow. Troubleshooting: 1.1. wget test results No Specify the IP protocol and the interface for wget to access it. The time is 4.163 seconds, which is basically a waste of host parsing. If the IP protocol of the specified wget is IPv4, The wget test takes only 0.096 seconds. 1.2. WGEtCompari
public network server IP (61.121.22.4), add a record LAN, and set to intranet server IP (192.168.0.2). 2, use the jump page. In front of the homepage of the site to add a jump page, enter the domain name yourname.edu.cn display of the first page is a jump page, jump page Production "School Edition" and "Off-campus Edition" two super connections, according to the user selected to enter the connection specified server. 3, set up the intranet DNS serv
Powershell and win dns server to solve the website load balancing problem, powershelldns Add a windows dns server by using powershell. Solve the website load balancing problem from the perspective of adjusting the dns Server Resolution ip time period. ----------------------
, because many resources are "long-connected" ways.such as database connection pool This is a typical long-term connection, in order to ensure the efficiency of the connection pool, we can not set the validity of a single connection too short. This has led to the inability of such long connections to respond quickly to changes in the mapping of DNS servers.There is only one workaround: After the mapping of the DNS
Accidentally saw an article about Nodejs sending an HTTP request does not cache DNS results. This means that if you write an HTTP capture program based on Nodejs, not providing DNS caching will allow each request to be silly repeatedly resolved domain name for IP address. It's going to sound very influential, isn't it? In my project, sending an HTTP request is not a node native HTTP library for use, but re
New Win7 users reflect, Win7 DNS problems, do not know how to solve. So the small series specially for everyone to edit an article about "Win7 DNS problems how to do?" The article: The reason for the problem with computer DNS is as follows: DNS problems occur because of th
caused by overload of the carrier server. In this case, we need to bypass the peak hours and perform download operations such as BT during low hours.6. In addition, a major cause of computer failure to Ping DNS is related to the system. We recommend that you perform full anti-virus processing on the system or install the operating system, this plays an important role in improving DNS access. You can also u
An Ubuntu server version is installed, a static IP address is configured, and DNS is configured. However, after the restart, it is found that there is still a problem when connecting the outside network.Look for a bit, is the problem of DNS.This can be handled:cat /etc/network/192.168. 21.11 255.255. 255.0 192.168. 21.1 dns
progress. The original DNS record is deleted on the DNS server, ipconfig/registerdns is used on ex01, and DNS is re-registered. ipconfig/flushdns is used on ex02 computers, clear the DNS Cache and test again. Both ECP and OWA can be accessed normally. 650) This. width = 650; "Title =" ECP success "alt =" wKioL1PIs_-T2
Some time ago, Dropbox had never been accessible. I thought it was a wall, but it was not handled because of other things. Today I saw an article on the Internet and tried it myself, dropbox is accessible. There are two well-known reasons: one is that the connection between you and the server is blocked; the other is that your DNS request is contaminated, a nonexistent destination is returned. Dropbox cannot be accessed because of the latter and
[Root@localhost ~]# Ping www.baidu.com Prompt Ping:unknown Host This is because the DNS server is not configured, and if the network is not a problem, you can follow these steps to check: 1) vi/etc/resolv.conf Add to NameServer 192.168.59.2 Native gateway address (router address) Search Localdomain # Search parameter Specify the search order for the domain name 2) Set up the gateway Vi/etc/sysconf/n
[Source] After Centos modifies DNS to restart or restarts the network service, the problem is lost. centosdns This article is copyrighted by mephisto and the blog Park. You are welcome to repost it, but you must keep this statement and provide the original article link. Thank you for your cooperation. Written by mephisto, SourceLinkReading directory Introduction Cause Processing GitHub This article is
650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/35/58/wKioL1OrhYfihiRYAACjcWPN5bA441.jpg "alt=" 1.jpg "/ >Recently encountered this kind of problem, in the network phase view of a variety of methods, the end of a complete solution, and finally after the reference to multiple solutions, the chance to solve the problem, now share.EnvironmentDomain: win2k12Client: WIN7There are two kinds of client I
Tags: http OS, ar file, 2014 problem, C on 1. Available hosts files of Dropbox Yesterday, the Dropbox domain name was suddenly contaminated by DNS, And the Dropbox domain name was also added to the blacklist keyword, which made the Dropbox client unusable. However, I found that the Dropbox can continue to be used normally by modifying the hosts file, the content of the hosts file is as follows. Note: my
How to solve the loss problem after Centos modifies DNS restart or restarts the network serviceRead directory introduction cause processing GitHub introduction when we configure Centos, we need to be able to connect to the Internet in many cases, so we need the DNS resolution function. By default, DNS information is no
Solution to the problem of DNS configuration loss after Ubuntu 14.04 restartEach time you modify the DNS configuration file/etc/resolv.conf, it will expire.From the Web, this file is created dynamically, so each reboot will be rewritten, this file also has a warning:So we can't modify this file directly.There are two ways to check the data:1)2)Vi/etc/resolvconf/r
from 61.135.169.125:icmp_seq=3 ttl=128 time=20.8 msUse the dig command:# Dig Www.baidu,com; ;; Global options: +cmd;; Got Answer:;; ->>header;; Flags:qr Rd RA; Query:1, Answer:1, Authority:1, additional:0;; QUESTION section:; www.baidu,com. In A;; ANSWER section:Www.baidu,com. 5 in A 220.250.64.26Display is normal.However, after the server restarts, the domain name can not be resolved, after analysis found that:In the/etc/sysconfig/network-scripts/ifcfg-eth0 filePeerdns=no # # #
Today open the virtual machine to start the network card ping Baidu Ping does not show Ping:unknown host baidu.com, is definitely a DNS issue.Open resolv.conf found that the last DNS that was provisioned has disappeared,I re-configured some nameserver restart the NIC after continuing to ping Baidu or the same error occurred. So I looked again resolv.conf found NameServer disappeared again.After configuring
Scenario: The day before the virtual machine in the configuration of the centos6.3, you can normally surf the internet, and the FTP server to build up, today a boot this goods unexpectedly can not surf the internet, depressed .... Problem: The following figure: Can ping the IP address, but the domain name Ping pass ... Resolution process: STEP1) A preliminary assessment of DNS problems Step2) Googlin
Lvs+keepalived was deployed yesterday and passed the test, no problems were found. This morning suddenly found, with ipvsadm–l view LVS information, response is very slow, and then go from the LVS telnet node port 22nd, found particularly slow.At first I checked the keepalived.conf configuration file, thought to be the same network segment multiple LVS settings, resulting in multicast collisions, blocking the network. Later stopped the LVS after the failure is still. Suddenly think of using stra
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