Centos

System security has always been our attention in the server http://www.aliyun.com/zixun/aggregation/18665.html "> Application field of the more important links, after all, normal production environment for system security level is also relatively high, Now many server operating systems choose Linux, and in this field platform is undoubtedly CentOS Linux is the industry leader, CentOS based on red Hat Enterprise Li ...

CentOS is an enterprise-class Linux distribution, originating from the source code that the upstream operating system provider (UOP) exposes free of charge. Yesterday, CentOS 6.4http://www.aliyun.com/zixun/aggregation/18782.html "> Official release, brought a lot of improvements, the following specific look." CentOS 6.4 Major improvements:---Increase the Microsoft Hyper-V drive, on the Microsoft Hyper-V server, Cento ...

Today, when you install CentOS 6.2, when you go to the test hard disk, always get through, the error is as follows: Disk SDA contains BIOS RAID metadata, but is isn't part of any recognized BIOS raid Sets. Ignoring disk SDA on the Internet to find a solution, after testing, finally is detected hard disk! can be installed next! Here to tell you the solution ...

CentOS is one of the Linux distributions that is compiled from the source code released by Red Hat Enterprise Linux in accordance with open source rules. Because of the same source code, some servers that require highly stable use centos instead of the commercial version of Red Hat Enterprise Linux. The difference is that CentOS does not contain closed source software. In the process of using Linux as a server, we often make the partition of the hard disk more reasonable.

I. Description: CentOS 6.1 Installs the image file has two DVDs, installs the system to use only the first mirror file, namely DVD1, another mirror file is the accompanying package. Attached CentOS 6.1 system mirror Http://www.aliyun.com/zixun/aggregation/18479.html "> Download Address: 32: Http://centos.ustc.edu.cn/centos/6.1/isos/i3 ...

Today, let's take a look at the VMware Workstation linuxhttp://www.aliyun.com/zixun/aggregation/30744.html "> Sharing Internet Problem, after installing CentOS, Network settings are required to access the Internet! Of course, if you have a router, directly in Linux to obtain IP automatically can access the internet! Or to specify the router's IP address and gateway, but generally we are using ADSL dial-up, ...

After installing the CentOS Linux operating system, the time we clicked on the system was found to be inconsistent with the time we used now, which is 8 hours, while the time zone we chose when we installed the system was Shanghai, but CentOS linux default http://www.aliyun.com /zixun/aggregation/19247.html ">bios time is UTC time (UTC is the coordinated World time (Universal times Coordina ...).

After we install and configure the server, we often need to maintain the current resources and some upgrades, and some new features also require a new version of support, today we try to upgrade the wizard CentOS separately PHP 5.1 to 5.2 or higher version of the current phphttp:// Www.aliyun.com/zixun/aggregation/6274.html "> Official release of the latest stable version of PHP 5.4.9, you can get through the link below!" PHP 5.4 ...

This week there are users in the Aliyun forum post to ask, civil and military double personal website is how to optimize, and even some people plus civil and military QQ ran specifically to consult. Many people reflect the civil and military double personal website visit very fast, today dedicated to share based on Alibaba host and WordPress established civil and military personal website optimization experience. First of all, said the following Wu double personal site configuration: 1 core CPU, 1G memory, 20GB system disk + 20GB data disk, 3M bandwidth, centos 6.3 64-bit system;

Today, when using the CentOS VSFTPD service, you use the FTP tool to connect, and suddenly the following error occurs: C:\users\administrator>ftp 192.168.1.6 connected to 192.168.1.6. OOPS:vsftpd:cannot locate user specified in ' Ftp_userhttp://www.aliyun.com/zixun/aggr ...

Occurs when Apache is started [Root@centos apache2]#/usr/local/apache2/bin/apachectl starthttpd:could not reliably determine the Server ' s fully qualified domain HTTP://WWW.ALIYUN.COM/ZIXUN/AGGREGATION/11696.HTML&Q ...

The Linux system provides us with the solution, that is, the Tmpfs file system, TMPFS can use the memory directly, while not enough memory to use the swap partition to store. Also note that TMPFS is not persistent, restart data does not retain, please be sure to note, but we only use it to store cached files, even if the file is lost does not affect the site access, there is no risk. /dev/shm/is a device file that uses the Tmpfs file system (note: Under CentOS and Redhat,/dev/...)

Iredmail's Chinese name is "Eric's Mail", which was renamed by the RHMS Project. Http://www.aliyun.com/zixun/aggregation/12489.html "> Mail server solution designed for Red Hat (R) Enterprise Linux and CentOS is a set of shell scripts that are used after the operating system is installed to quickly deploy a full-featured mail server solution. ...

Installing a Linux system on your computer, partitioning your hard disk is a very important step, and here are several partitioning scenarios. (1) Programme 1/: Recommended size above 5GB. Swap: Swap partition, recommended size is 1~2 times of physical memory. (2) Program 2/boot: Used to store the Linux system startup related programs, such as boot loader, and so on, recommended size of 100MB. /: The Linux system root directory, all the directories are hanging under this directory, the recommended size of more than 5GB. FileSystem: Storage Pu ...

By means of PPPoE xDSL access to the network of users, each access to the IP address is changed. We can not let other people use IP address to access our server, and ordinary free http://www.aliyun.com/zixun/aggregation/21602.html "> two domain name and can not cope with the real-time server IP changes." Therefore, the need to apply for a dynamic domain name, through the service to the domain name point of real-time control, regardless of the server IP address how the change, ...

Docker study notes one. Update kernel, upgrade kernel to 3.x two. Install docker:rpm--import/etc/pki/rpm-gpg/rpm-gpg-key-epel-6 yum-y install Docker-io three. Start Docker:service Docker start Chkconfig Docker on four. Download base Mirror: Docker Pull Centos:lat ...

With CD or u disk successfully boot, press the ESC key on the keyboard, appear boot: Enter the Linux text, enter the mode of installation; Press ENTER directly to enter the graphics installation mode; If you do not press ESC, the default is to enter graphics installation mode. The following is illustrated in graphical installation mode: Installation Interface Description: Install or upgrade an existing system installs or upgrades existing systems &http://www.aliyun.com/zix ...

Ganglia monitoring software is mainly used to monitor the performance of the software, such as: CPU, MEM, hard disk utilization, I/O load, network traffic, etc., through the curve is very easy to see the work of each node, the reasonable adjustment, distribution system resources, improve the overall performance of the system plays an important role. Support browser access, but can not monitor node hardware specifications, ganglia is a distributed monitoring system, there are two Daemon, respectively: Client ganglia monitoring Daemon (Gmond ...

When the SSH service of the server is running properly, we can use sshhttp://www.aliyun.com/zixun/aggregation/5218.html "> client software to log on to the server in the LAN from our PC. Complete server configuration and maintenance in this way. Not strictly speaking, at this time the server does not need a monitor and keyboard, because most of the configuration work can be in the remote (LAN) client control. Here, to be simple and easy to use ...

Here, we are not going to use the SSH service as the user's tool for uploading downloaded files. We only use SSH service to facilitate the remote management system. 　　In addition, in the user authentication way, for the server and the user's security, prohibits the user password authentication way, but is based on "the key" the way. The modification of the SSH-related configuration file first modifies the SSH configuration file. as follows: [Root@sample ~]# vi/etc/ssh/sshd_config← with VI to open SSH configuration file #pro ...