Lack of some necessary components generates obscure error messages

[sunhailin-Leo]

Question

• When the pciutils package is not installed on the server, it is impossible to know immediately that it is caused by the lack of the lspci command. Because this code does not throw any exception. https://github.com/leptonai/gpud/blob/main/pkg/pci/pci.go#L24-L27.

Solution

# Ubuntu/Debian
apt-get install pciutils -y 

# CentOS
yum install pciutils -y

Improvement

• In the installation document, should add some pre-install script to inform the user to install it.
• By the way, dmidecode also has the same problem.

# Ubuntu/Debian
apt-get install dmidecode -y 

# CentOS
yum install dmidecode -y