CentOS

Since the RHEL6 version, Redhat is not the original support Xen, instead of the embrace of KVM. Although KVM claims to support the full virtualization of HVM technology, KVM started late after all, far less mature than Xen technology, the system

The local clock in the Xen Linux machine is by default (done) synchronized with the physical host clock, in order to change the time it uses the Sync Service for NTP, the kernel parameters must be set by the virtual machine:Shell CodeEcho 1

[1] Physical CPU: The number of CPUs on the slot in the actual server. Number of physical CPUs: There are several physical IDs that can be counted without duplicates. [2] Logical CPU Linux users are certainly not unfamiliar with the/proc/cpuinfo

1, add Users New user named "Wang" [Root@vdevops ~]# useradd Wang #添加账户 [root@vdevops ~]# passwd Wang #设置密码 changing password for user Wang. New Password:retype New Password:passwd:all authentication tokens updated successfully. [Root@vdevops ~

This article explains the timing plan from the installation to an automatic duty exampleInstall Crontab:[Root@centos ~]# Yum Install Vixie-cron[Root@centos ~]# Yum Install Crontabs DescriptionVixie-cron packages are Cron's main programs;The Crontabs

Preface: Scenario One: Usually when we develop, the general items are only stored in the root directory specified by localhost, when there are several items, only in the root directory under different folders, especially inconvenient. Scene two: At

1, installation mariadbInstallation commandsYum-y Install mariadb Mariadb-serverInstallation Complete mariadb, first start mariadb, two commands can beSystemctl Start mariadb#service mariadb StartSet boot upSystemctl Enable MARIADB#chkconfig mariadb

First heard elk, is Sina's @argv introduction internal use elk situation and scene, at that time touched very big, originally have so convenient way to collect log and show, have such tool, you do bad thing, delete log, it has no effect.A lot of

Background Introduction:The project is currently in the file synchronization with Rsync, in the attempt to replace the distributed file system, the use of moosefs, the effect is not satisfactory, after understanding the Glusterfs, decided to try,

The system Localeare used to control the language setting of system services and the UI before the user logs in. How does I change the default system locale in the CentOS 7 Linux system? How to check the current locate setting under CentOS 7 or RHEL

[Email protected] etc]# Ls-al localtime*lrwxrwxrwx. 1 root root 38 November 03:32 localtime. /usr/share/zoneinfo/america/new_york[[Email protected] etc]# DateSaturday, March 12, 2016 00:00:57 EST[Email protected] etc]#Ln-s.

One, Linux boot kernel files1.Linux System compositionDynamic View: Kernel + root file systemStatic View: Disk partitioning + related files2.Kernel Features(1) Support for a block:. KO (Kernel object) fileCentos7 's Ko file:650) this.width=650; "src=

1. GetFrom me to the disk download: qt-creator-opensource-linux-x86_64-3.5.1.run qt-everywhere-opensource-src-4.8.7.tar.gzThe following are open Source: http://download.qt.io/official_releases/qtcreator/ http://download.qt.io/official_releases/qt/2

Installing ErlangCD/tmpwgethttp//erlang.org/download/otp_src_18.3.tar.gzTar-ZXVF otp_src_18.3.Tar. gz/opt/otp_src_18.3CD/opt/otp_src_18.3Yum-YInstall GCCGlibc-devel MakeNcurses-devel openssl-devel autoconf./configure && Make&& Make

Platform: Centos 6 x86_64, default kernel version 2.6.341, prepareYum Update-yYum install-y ncurses-devel gcc make BC wget patch Grub2, download the relevant installation packagewget http://download.clearfoundation.com/l7-filter/netfilter-layer7-v2.2

Prerequisite requirements (optional)Before installing the ZABBIX monitoring tool, install the necessary run kit firstyum install gcc gcc-c++ make openssl-devel curl wget net-snmp net-snmp-utils net-snmp-libs net-snmp-devel gnutls gnutls-devel libxml2

First, System EnvironmentExperimental topology:Lab Environment:Vmware 9.01 + Windows 8 x64 Enterprise Edition +8g MemoryVirtual Machine steps:1, install a CentOS 6.3 x64 host, the memory is 1GB, the network is NAT mode, pay attention to check the

In centOS 5.8, manually change the static IP address to a dynamic IP address, centos5.8 first mv/etc/sysconfig/network-scripts/ifcfg-eth0/etc/sysconfig/network-scripts/ifcfg-eth0.bakvi/etc/sysconfig/ the network-scripts/ifcfg-eth0 changes the

Set up an FTP server using CentOS and set up ftp using centos1. Install vsftpdYum install vsftpd2. Edit iptablesVi/etc/sysconfig/iptables-A input-m state -- state NEW-m tcp-p tcp -- dport 21Service iptables restart3. Configure vsftpdVi/etc/vsftpd.

OpenVPN is another VPN software package different from PPTP and L2TP. It is based on ssl vpn. The use of OpenVPN requires client support. Here the system is CentOS6.4.I. Check the environment required by OpenVPNOpenVPN requires support from TUN