Cloud Applications

In the previous article, I briefly introduced several aspects that affect linux performance and how to solve these problems, but how can we find problems in some or some aspects of the system? this requires several common performance analysis tools

Sometimes we use a USB flash drive to install centos, and accidentally install grub to the USB flash drive. as a result, the boot needs to be inserted into the USB flash drive to start the server, or grub is damaged. in this case, we need to

Today, when I played fail2ban, I suddenly thought of saving the rpm dependency package downloaded by yum. so I searched for information on the Internet and sorted out the default path for saving the files downloaded by yum in an emergency:

I. implementation principle using a "public/private key" authentication method for ssh login. A simple explanation of the "public/private key" authentication method is: First, create a pair of public/private keys on the client (public key File :~ /.

When we use the CentOS system, problems may occur frequently in the time zone, and sometimes errors may occur after the change. next we will learn a way to change this situation. If you are not using CentOS, run the command yuminstallntp and then:

Detailed description of the LinuxLVM logical volume configuration process (create, add, reduce, delete, and uninstall) Many Linux users encounter the following dilemma when installing the operating system: how to accurately evaluate and allocate

I am going to have a LinuxIO training in the company in the near future. I will sort out the relevant materials and share with you the position of various I/O monitoring tools in the LinuxIO Architecture & nbsp I am going to have a Linux I/O

Installation package of linux software package: Source code: binary format: & nbsp installation of linux software package Software package: Source code: Binary format: Source --> binary Software package manager The redhat package manager is

Today, another friend asked, how do I add permanent static routes to CentOS? Here, we will make a memorandum. Refer to RedHatEnterprise6's official document: Release Today, another friend asked, how do I add permanent static routes to CentOS? Here,

In windows, port forwarding usually uses the built-in nat and rinetd programs for port forwarding ing in porttunnel and portmaplinux. The start method is rinetd-c/etc/rinetd. conf, pkillrinetd shut down the process tool home page: http://www.boutell.

This article describes in detail the roles of different running levels in startup. Linux seems to be a monster for advanced users on the DOS/Win9x/NT platform. No config. sys, no autoexec. bat, and machine configurations with personal

Start vim open multiple files and split screen display: vim-onfile1file2o is lowercase letters, upper and lower points, n is the number of split screen, followed by the file to be opened vim-Onfile1file2O is uppercase letters, left and right points,

Smbclient usage 1, listing the shared folder smbclient-L198.168.0.1-Uusername % password2 provided by an IP address, after smbclientsmbclient // 192.168.0.1/tmp-Uusername % password is successfully executed like an FTP client, enter the smbclient

I am using 8 m broadband for China Telecom, and the Internet is also expensive. Record the network configuration process of CentOS6.4. The following statements are executed with the root permission. Enter the su Press enter in the command line and

Timeout is a wonderful Linux command that can control the running time of the program, which is very useful for controlling the running time of the program. Timeout on the CentOS6 platform, from the software package coreutils #

CentOS system startup process POST (power-on self-check): detects that the hardware maps a program in the RAM chip to the ROM address space under CPU control, execute the command to check the health status of the system hardware, such as whether the

How to View computer hardware device properties in linux # uname-a # view the kernel/operating system/CPU information # head-n1/etc/issue # view the operating system version # cat/proc/cpuinfo # view CPU information # hostname & n How to View

Nic binding means that multiple NICs are logically used as one Nic. It can be divided into two types: server load balancer binding and redundant binding. 1. edit the virtual network interface configuration file [root @ test ~] #

At work, some colleagues often complain that their English is not very good. reading some error messages and configuration documents is not easy. now I will set some major English documents to Chinese, we hope to help you in this process. 1. the

For Linux user operation records, the command history is generally used to view historical records. However, if important data is deleted due to misoperations, The history Command will not be useful. So how should we implement the historical