Cloud Applications

When the system slows down, we may first focus on the cpu metrics. sometimes we find that the cpu usage is not high at all, but the system is still stuck, in this case, you may need to worry about other things that affect performance? Disk I/O

In centos, you can run the command hostname or uname-n to view the current host name. if it is not set, it is set to localhost by default. for details, see the startup script:/etc/rc. d/rc. sysinit. To modify the host name, you can change the

Rsync: basic syntax of the synchronization command rsync command option: the target Directory of the source directory. if the source directory is/var/www/, all files in the directory will be synchronized to the target directory, if it is written

In other words, the cd command is one of the two commands with the highest usage in Linux (the other is ls of course ), I have never known the tips for seeing a cd command two days ago. Cd-# return to the last Directory. it seems to be useful, with

The find command has several options for searching files based on your system's timestamp. These timestamps include the time when the atime file was last modified, the time when the file was read or accessed, and the ctime file state change time.

VPS is a type of virtualization, but it only has an independent system, and the root virtual machine is quite different. this blog uses VPS as an example. because the VPS system is selected by you, but how to install it is not controlled by you, you

Using OPENVPN to achieve mutual intranet access between two places (a) master server configuration to achieve the function: Shenzhen: Master VPN Server: dns.dog.com Internet ip-eth1: 192.168.68.71 intranet ip-eth0: 10.1.1.254 Guangzhou: VPN server:

First open the terminal, and then enter: route-e in the terminal to display the current route table of the host. at this time, if you want to add a destination network that is 10.0.2.0/24, the next hop IP address (Gateway) for Route table entry 10.0.

Preface after Linux computer is installed, various junk files will be generated in the hard disk due to activities such as adding and deleting software, surfing the Internet, and debugging programs, as these junk files continue to expand, they will

Environment: The company's file server is about to be migrated to an RHEL5 server. during preparation, the existing system administrator needs to familiarize himself with the RHEL5 system user interface as soon as possible, master the graphic

1. acpi-support-you 'd better set the running level in S to "X. 2. acpid-acpi daemon. These two are used for power management and are important for laptops and desktops, so they are enabled. 3. alsa-if you use the alsa sound subsystem, yes, enable

Prepare to learn about ORACLE. when setting up the environment, always prompt that SWAP space is insufficient. Specifically, record the method for adding SWAP space! Step 1: Check the current partition (use free-m or cat/proc/swaps): [root @ db2root]

Linux command lines attract most Linux enthusiasts. A normal Linux user generally has about 50-60 commands to process daily tasks. Linux commands and their conversion are the most valuable treasures for Linux users, Shell script programmers, and

Objectives: The master server program synchronizes the program to multiple subservers. configure the synchronization source to install rsync: yum-yinstallrsyncxinetd to enable rsync: vim/etc/xinetd. d/rsync change disable = yes to disable = no

I deployed LAMP in my company today and thought about it. I didn't test the pseudo static state of LAMP .... So I found this article online and generated it. I will share with you the LAMP setup steps I have used in the enterprise. ---- What is

Ftp servers are more common on the internet. the function of the Linuxftp command is to use commands to control the transfer of files between the local machine and the remote machine. here we will detail some frequently used commands of the Linuxftp

How to Control Account expiration in linux: enterprise users can set the account validity period for unmanaged role accounts or temporary requirements of developers to improve security! Method 1: add the user useraddoldboy-e01/28/12 or modify the

To download and install the server installation package, select the correct installation package. 1, CentOS-6.4-x86_64-LiveCD.iso (LIVE: is the health check version) 2, CentOS-6.4-x86_64-LiveDVD.iso (LIVE: is the health check version, some software

Manage Ethernet connection network interfaces using continuous identifiers such as eth0 and eth1. The network interface can be set to use an alias (aliases). The alias is marked as eth0: 1 and eth0: 2. this is called a network subinterface and is

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