Linux

First, the log system1. Log system: Syslog ()Information Detail Program: Log LevelLog subsystem: FacilityLogging action: ActionLog system on Linux:SyslogSyslog-ng: Syslog-ng as an alternative to syslog, can completely replace the service of syslog,

The C rule involves the queue classifier (Class) filter (filter), the filter divided by the flag bit can be used U32 or iptables of the Set-mark to achieve) is generally "control" does not control the Linux two network card, a eth1 is an external

Say a few terms first:First, five segments of the Linux processLet's briefly summarize what 5 different data areas are included in the memory space of the process.Focus:Code snippets, data segments, stack segments, this is a conceptHeap, stack,

A DNS server, or name server, is used to resolve an IP address to a hostname or vice versa.You can set up four different types of DNS servers: A master DNS Server for your domain (s),  which stores authoritative records for your domain.

Raspberry Pi is a magical machine, the CPU and memory are poor, but small volume of low power consumption, on the above to engage in some of the West is actually very interesting, quite fun. is Pidara, basic service is not streamlined how much,

A file (or directory) has several properties, including basic properties such as (r/w/x), and whether it is a directory (d) with a file (-) or a connection file (L). In addition, Linux can also set other system security properties, use Chattr to set,

I. Use the hdparm commandThis is a command used to obtain the parameters of the ATA/IDE hard disk, hdparm has been written by Mark Lord, the primary developer and maintainer of the (E) IDE driver for Linux, with suggestions from javasnetfolk ). this

Dpkg is a tool for installing, generating, deleting, and managing software packages in Linux. The syntax format is as follows: Dpkg [option...] action Dpkg itself is completely controlled by command line parameters. Its command line parameters

The first step to install Ubuntu is to create a portable operating system. If you are using Windows XP, 7, 8, or 8.1, you can create a Live USB using the Universal USB Installer. This is my favorite method, and it is easy to use. Let's see how to

Now it is easier to test Ubuntu on the phone. You can download a program from Canonical, which can install a new operating system without removing the original Andorid. A dual-boot system can attract more users to pay attention to the new

Last week, I upgraded the online zabbix version to 2.2.0, which added the simple monitoring of Vmware ESXI. I think it is very good. Next I will talk about my monitoring steps. Reference: Https://www.zabbix.com/documentation/2.2/manual/vm_monitoring

I have always wanted to share with you my experiences and experiences on how to automate O & M of business systems in windows, but I have never been able to do so due to time and work. Now we have posted a simple automated and timed script for

Download the cwRsync server and client software as follows: Server: cwRsync_Server_2.0.10_Installer Client: cwRsync_2.0.10_Installer Then I installed the server (10.0.2.136) on the local machine, and then installed the client on another machine (10.0

The full name of VPN is "Virtual Private Network", and the Chinese name is "Virtual Private Network ". VPN can connect to the Internet through a special encrypted communication protocol, and establish a proprietary communication line between two or

Because the previous work requires building a red hat lab environment, due to the large number of machines, all systems need to be automatically installed in batches, so I tried to use RHEL5 + PXE + DHCP + Apache + Kickstart to install the RHCE5.1 i3

Detailed installation Tutorial: 1. Check whether the server has necessary support. If no support is provided, pptp cannot be installed. Run the following command: # Modprobe ppp-compress-18 & echo OK After this execution, "OK" is displayed,

I am used to the cp, rm, mv, and other commands in freebsd to directly overwrite files of the same name, but in linux (not necessarily all, maybe I use several ), when you use the cp/rm/mv command to overwrite a file, the system always prompts "yes"

I. Requirements for building the Wordpress physical environment: WordPress 3.3.2 server requirements Php 5.2.4 or later MySQL 5.0 or later 2. Build Wordpress 1. Get the Wordpress Software Package Wordpress's simplified Chinese official website http:

Generally, the architecture deployment is in two formats: LNMP and LAMP. Here I am talking about LNMP architecture deployment, nginx, mysql, php, and memcache compilation configuration installation, mysql Master/Slave configuration and permission

The main class used for file operations in Hadoop is located in the org. apache. hadoop. fs package. Basic file operations include open, read, write, and close. In fact, the file API of Hadoop is generic and can be used in file systems other than