Basic Linux Knowledge

Abstract: Understand the computer-related components, server model, configuration, procurement, classification and its hardware components. Know the philosophy of Linux: Everything is a document. Learn to install virtual machines.

1 servers

1.1 To understand the relevant server model, type and configuration, procurement

1.2 Server By Application function can be divided into: Web server, database server, mail server, file server, middleware application server, log server, monitoring server, program version control server, virtual machine server, print server, domain control server, multimedia server, communication Server, ERP server, etc.

Note: Different application requirements require different hardware to configure different servers.

Server by Form factor: Tower server, rack server, blade Server (for cluster use)

1.3 Server hardware components:

CPU: Main frequency, FSB, frequency multiplier, and CPU type. Number of CPUs enterprise-class general use 4 or more than 4 way

Motherboard, Memory: Fast access speed, data loss after power outage, server memory more than 2, redundant check

HDD: sata:serial ATA, increased transfer rate, hot-swappable, sas:serial attached SCSI, SATA compatible, SSD

RAID Card: Detect and Repair multi-bit errors, error disk detection and other functions

Network card, sound card

Power supply: Supports the power load of the server,

Supports redundancy to prevent power failures – fault warning and prevention

– Preventative maintenance prior to failure

– Ensure that the server is running continuously

Pci

2 Linux Philosophical ideas

Everything is a file (including hardware)

? Small, single-use programs

? link programs to accomplish complex tasks together

? Avoid confusing user interfaces

? Configuration data is stored in text

3 Installing a virtual machine

CPU: Default

? Memory: 1G or more, recommended 2G

? HDD: One hard drive, 200G

? Nic: Bridged or host-only mode

? CD: Mount the corresponding version of the ISO file

Basic Linux Knowledge