Installation and Configuration of CentOS7 Diskless OS for x86_64 and armv7

Download and install the latest centos7_dist package https://github.com/JeffersonLab/centos7_dist/archive/rc3.tar.gz

• I extracted the package in my home directory with:

tar zxvf centos7_dist-rc3.tar.gz -C ${HOME}

This unpacks in the directory ${HOME}/centos7_dist-rc3

Download and install the root and tftp pair for your module(s).

• VTP (armv7):
  • root-rc3(filesize = 1G) tftp-rc3 (filesize = 26M)
• VME (x86_64):
  • root-rc3,(filesize = 1.5G) tftp-rc3 (filesize = 7.2M)

I downloaded these and moved them into the tgz directory

mv -v root*.tgz tftp*.tgz ${HOME}/centos7_dist-rc3/tgz/

The configuration file to adapt for your system is x86_64-rc3.cfg Make sure the ones below are set for your environment.

• CLIENT_HOSTNAME[n]

  I only have one VME controller at the moment, it's hostname will be rocvme1.jlab.org. But's short hostname is what is needed here:

  CLIENT_HOSTNAME[0]=rocvme1
  

• NFS_PATH

  This is where the centos7 filesystem will be unpacked. The default works fine for me.

  NFS_PATH=/diskless/CentOS7/x86_64
  

• TFTP_PATH

  Sometimes this path will be different for different types of tftp servers. I'm using tftp-server on RHEL 7. So this path is the default:

  TFTP_PATH=/var/lib/tftpboot
  

The configuration file to adapt for your system is armv7-rc3.cfg The VTP needs one extra variable defined

• CLIENT_HOSTNAME[n]

  I only have one VTP, it's hostname will be rocvtp1.jlab.org. It's short hostname is all that's needed here:

  CLIENT_HOSTNAME[0]=rocvtp1
  

• VTP_MAC_ADDR

  This parameter is used in the generation of the VTPs environment file. The MAC address is unique for each VTP, and can be obtained from Ben Raydo.

  VTP_MAC_ADDR="ce:ba:f0:03:cc:ff"