best free dns servers

actually: Available 627M, 368M is used instead of 525M and 470M.Buffers/cahed Manual Release TestBefore release[[email protected] ~]# free-h Total used free shared buffers cachedmem: 996M 531M 465M 56K 42M 119M-/+ buffers/cache: 369M 626MSwap: 　　　　　　　　1. 5G 234M 1Manually release using commands3 >/proc/sys/

Zhou haihan/Wen Google launched two well-remembered DNS servers after receiving a message from Gu O. That is 8.8.8.8 8.8.4.4 Tested and available by myself. Some people say that 4.4.4 and 4.3.2.1 are the same. After my test, the two IP addresses can be pinged but cannot be resolved by DNS. Below is the test result: Zhouhh @ zhhofs :~ $ Ping 8.8.8.8 8.8.8.8 a

Some friends may already know the opendns service, but I did know it through a foreigner's blog today. This website provides free DNS resolution, which is faster, safer, and smarter than the average ISP: FasterThe two features ensure that opendns is faster. First, it has a large and intelligent cache, which ensures that users can make profits from the huge opendns user library; opendns has a high-perf

: EF: 84: A4: A7: E5: D1: 20: 58: C8: 73.Are you sure you want to continue connecting (Yes/No )? YesWarning: Permanently added '192. 168.15.234 '(RSA) to the list of known hosts. // This step adds the remote server B to the known_hosts list of the local server (server ).Root@192.168.15.234's password:Id_rsa.pub 100% 399 0.4kb/s 3. Test After the public key file is uploaded to the remote server, log on to server B from server a immediately. If the password is not entered, log on to server B, whic

emptying all caches.View:[Email protected] ~]# cat/proc/sys/vm/drop_caches4, redundant data timely deletion, production data backup;Test[Email protected] ~]# uname-aLinux testserver 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT x86_64 x86_64 x86_64 gnu/linux[Email protected] ~]# free-mTotal used free shared buffers Cachedmem:2013 1661 352 0 223 1206-/+ buffers/cache:231 1782swap:2047 0 2047[[Email protected

In the actual operation of the process, often need to use the password-free login, the following script to implement the server between the password-free, as followsFor example, to achieve a server with the B, C, D server-free login, only need to write the IP address of the B, C, D server in Serverlist.txt, and then execute the following command on a server.#!/bi

early as possible and take appropriate precautions before these changes cause data corruption. NetWrix The file Server Change Notification tool allows you to easily implement the following features:One: Based on Windows audit of file servers;II: Modification of files, folders, Shared Documents and permissions, deletion or addition of reports;Three: About files, folders, and shared access attempts to show a successful or failed report containing detai

I received a request today to activate six servers for password-free login between servers. Unified configuration of all servers: 1-3 1. Modify the hosts file and write the hostname and IP address of all servers to/etc/hosts.10.1.1.1 ip-10-1-1-110.1.1.2 ip-10-1-1-2 2. Modif

directory according to your needs (please refer to the blog post), you are done, a private cloud composed of multiple cloud servers is so gorgeous deployment completed. You can also add PCs to the cloud for multi-device bidirectional real-time synchronization. You try to copy a file to the Sync directory, and it is not immediately synced to another online member server (PC). Wow, less than 1 seconds, very exaggerated there are wood there! Copyright

characters that don't understand # Copy the public key file to another server need to execute on another server Ssh-keygen -trsa create the. SSH folder $scp./id_rsa.pub[emailprotected]:/home/sweet/.ssh/authorized_keys# Note that the Authorized_keys permission of the target machine is-rw-r--r--, if it is not necessary to perform Chmod644authorized_keys modify the file permissions $ssh 192.168.1.101# this time to execute this command can be directly logged in, no need to enter the password Afte

Configure the password-free SSH login between server F1 (192.168.1.1) and server F2 (192.168.1.2)First, the configuration server host name is F1, F21. Change the network file under/etc/sysconfig, enter vim/etc/sysconfig/network at the prompt, and then change the value of hostname to the name you want to set: F1.2. Change the Hosts file under/etc, enter vim/etc/hosts at the prompt and change Localhost.localdomain to F1, and configure the F1 and F2 IP m