Shulou(Shulou.com)06/02 Report--

Operating system mount concept

How to use the server disk

1) configure the disk array

2) perform system partition operation

3) perform disk format operation

4) enter the disk to create a file system.

5) use the mount operation. Open a door for a storage device

How to mount operation: the first course: mount environment preparation PS: everything in linux system file preparation optical drive (partition): / dev/cdrom / dev/ storage device file directory / dev/sda / dev/sda1 / dev/sda / dev/sdb / dev/sdc prepare mount door: any Empty directory / mnt temporary mount point directory second course: optical drive device needs to be placed in the CD drive third course: mount operation mount device file information mount point directory mount / dev/cdrom / mnt umount / mnt fourth course: check to confirm whether df is mounted-check disk information

System important file data

/ etc directory

1) Network card configuration file

File path information: / etc/sysconfig/network-scripts/ifcfg-eth0

File function description: configure network card address information (IP address mask address gateway address DNS address information)

File details:

TYPE=Ethernet-specify network type Ethernet type

BOOTPROTO=none-obtain IP address method none static (manually configure address) dhcp (automatically obtain address)

DEFROUTE=yes-activate default? Routing? (network knowledge)

NAME=eth0-Network card name information logical name

DEVICE=eth0-Network Card name Information device name

UUID=226f4037-72f4-4c0e-b72a-442145f64d81-eth0 network card device number

ONBOOT=yes-whether to activate the network card or not

File configuration takes effect: restart the network service

Method 1: using systemctl to command the enterprise environment is not recommended

Systemctl restart network

Method 2: using service to command the enterprise environment is not recommended

Service network restart

Method 3: use the ifxx command to specify the network card to restart

Ifdown eth0 & & ifup eth0 Enterprise Environment configuration

Method 4: use nmcli

Https://my.oschina.net/u/3754919/blog/1811361

2) Domain name service profile

File path information: / etc/resolv.conf

Description of the function of the file: whether you can access the name or domain name information

File content information:

Vi / etc/resolv.conf

Nameserver 223.5.5.5 (DNS server address)

PS: DNS server function: to resolve the domain name (gun bureau) to IP address (dispatch office)

223.5.5.5 Ali Cloud Co., Ltd.

114.114.114.114 Telecom Company

8.8.8.8 the new company checks for itself.

How the configuration works: effective immediately

3) Local domain name resolution profile:

File path information: / etc/hosts

File function description: implement local name resolution (used to access different servers) for website testing

Web Server-Network-Database Server 192.173.16.122

-Network-Storage Server 187.169.45.231 date01

-Network-Monitoring Server 177.187.56.93 zabbix01

File information configuration: omitting

4) start up and run the command file automatically:

File path information: / etc/rc.local

Description of the function of the file: run the command information automatically after the system is started

File content information:

#! / bin/bash script file

Mkdir-p / backup

Cp / etc/hosts / backup

Rm-rf / tmp/*

Mount / dev/sdb1 / oldboy01

Mount / dev/cdrom / mnt

PS: confirm that the / etc/rc.d/rc.local file must have execute permission

Chmod + x / etc/rc.d/rc.local

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