Address causes CentOS ping of Baidu does not recognize the host approach

  Has appeared many times before the question, Hey, white, noway.   The premise that ping Tong host.   Libxml2 library and encounter is to use yum upgrade CentOS host could not be resolved. Are generally gateway and CentOS,DNS is not set up.   Solution:   2. check network settings for Windows   ifconfig/all   […]

CentOS 7 emergency operations group

Netstat command  


how to install memcached on centos 6 – 7

In the CentOS install memcached is simple, just use CentOS since dependency management tool can, but you can use the compile method to install it. 1. Server memcached I am going to use yum to install memcached: [root@localhost ~]# yum install memcached Select y Very simple! Installation complete! Let us start memcached it! [root@localhost ~]# […]

Uninstalling and install the JDK in centos

Under normal circumstances, we will Linux bring OPENJDK to uninstall and install SUN’s JDK First: check Linux native JDK is installed <1>#//view the installed JAVA version information General will receive the following message: java version “1.6.0” OpenJDK Runtime Environment (build 1.6.0-b09) OpenJDK 64-Bit Server VM (build 1.6.0-b09, mixed mode) <2># |grep view JDK Java//information General […]

How to create multiple SVN repository on centos

OcentOS creates multiple SVN repository SVN server repository has two formats, A FSFS, A BDB After the SVN repository to upload files, upload the files are no longer stored in a file format, but SVN formats compressed into a repository with its custom data stored in the repository. If it is FSFS format, the data […]

NFS mounts under CentOS to other machines for

1, the premise: there are two machines, all Centos5.X systems. Machine 1 IP: (as a server, you must open the NFS and Portmap services) Machine 2 IP: (as the client, you must open the Portmap service) 2, NFS and Pormap/rpcbind installation Whether it’s 5. X portmap is 6.X rpcbind, core capabilities are summarized as a […]

LAMP best configuration for Lamp in centos 6.6 and centos 6.7

What is LAMP? LAMP = Linux+Apache+MySQL/MariaDB+Perl/PHP/Python A common collection of open source software to build dynamic Web sites or servers, are separate programs in and of itself, but are often put together, with an increasing high degree of compatibility, constitute a powerful Web application platform. With the booming trend of open source, open source LAMP […]


  1. see if your host supports PPTP, returns the result is Yes, which means that passed.   modprobe ppp-compress-18 && echo yes   2. turn the TUN, need to open the virtual machine host and returns the result as a cat:/dev/net/tun:File descriptor in bad state.Said.   cat /dev/net/tun   3. install the PPP, pptpd […]

How to fix error MySQL mariaDB on Centos

Display yum install MySQL MySQL installation is complete, the service MySQL status, service MySQL start prompted failed, the database is also unable to login. [root@ansible flask_sqlalchemy]# service mysql status Redirecting to /bin/systemctl status mysql.service ● mysql.service Loaded: not-found (Reason: No such file or directory) Active: inactive (dead) [root@ansible flask_sqlalchemy]# service mysql start Redirecting to /bin/systemctl […]

Centos Nload monitor network card flow method

NLoad is a very useful traffic monitoring tools, functions are also very strong. you can monitor the network traffic in real time, Incoming,Outgoing in two parts, which flows in and out of traffic. While statistics of the current, average, minimum, maximum, and value of the total flow, people look at a glance First of all […]