Prerequisites for Deployment

All commands in this section meet the following conditions. Change the parameter values based on your requirements.

• The installation user is omm.
• The installation package is stored in /home/omm/haf-software.
• The installation directory is /home/omm/haf-install. The /home/omm/haf-install/haf-host directory is generated after installing HAF on the host node, and the /home/omm/haf-install/haf-target directory is generated after installing the HAF service on the offload node. The /home/omm/haf-install/haf-offload directory is generated after installing the HAF library on the offload node.
• The cgroup subdirectory is omm_haf. For details, see Prerequisites for Installing HAF.

Prerequisites for Installing HAF

Before installing HAF as a common user on the offload node, perform the following operations as the root user first:

• Grant the permission for creating scheduled tasks to the current user. If the current user is omm. Run the following command:

  echo "omm"  >> /etc/cron.allow

• To control the CPU and memory used by applications running on HAF, create a cgroup subdirectory for the current user. If the current user is omm and the subdirectory is omm_haf, run the following commands:

  cd /sys/fs/cgroup/cpu
  mkdir omm_haf
  chown -R omm:omm omm_haf
  cd /sys/fs/cgroup/memory
  mkdir omm_haf
  chown -R omm:omm omm_haf

• To ensure system security, disable remote login for user omm who installs and runs HAF. That is, set the permission of user omm to nologin.
• Prerequisites for Installing HAF is not required for installing HAF on the host node or installing the HAF library on the offload node.
• When using the root user for installation, you do not need to configure a scheduled task, but you need to create subdirectories in /sys/fs/cgroup/cpu and /sys/fs/cgroup/memory.
• You can rename the cgroup subdirectories as needed. The names of the subdirectories created in /sys/fs/cgroup/cpu and /sys/fs/cgroup/memory must be the same and will be used as the value of the cgroup_dir parameter during HAF installation on offload nodes.