linux distribution CentOS install record

use minimal iso

the iso url is http://isoredirect.centos.org/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1810.iso

it was a stupid choice which took me about 5 hours to wait the source installation verified and failed at last.

use dvd iso

the iso file size is about 4.3GB.(url)

must use the ultraiso or other tools to write the iso into the U-disk.

• Do not use the windows file explorer, just copy make no sense.
• should assign the disk first
• when creating the user(not root), if you add group and then check the administator, installation will give a bug and you only restart and do all things again.

centos 中文输入法

ibus-setup

出现一个gui界面,在preference中添加语言，需要退出重新进入

centos screen brightness

icon in the menu bar, which is charge management.

openvpn requirement

• tun/tap

  modinfo tun
  modprobe tun
  lsmod |grep tun

• openssl

  yum install openssl-devel

• lzo

  yum install lzo-devel

• libpam

  yum install pam-devel

• cmake

  yum install cmake

• cmocka

strange error and do not need to handle this error

just need download a git repoyou can find detail in the INSTALL instructions.

• problem

• cannot ping the ip in vpn network