Configure System Settings

Each of the additional machines must be configured identically to the existing machines with regard to operating system, drivers, and tuning settings. The high-level tasks are as follows:
  • Configure passwordless SSH for the root user ID.
  • Disable SELinux if it is disabled on the existing machines.
  • Modify /etc/ssh/sshd_config with the following setting:
    MaxStartups 1000
  • Modify /etc/security/limits.conf with the following settings:
    • soft nproc 65536
    • hard nproc 65536
    • soft nofile 350000
    • hard nofile 350000
  • Modify /etc/security/limits.d/90-nproc.conf with the following setting:
    soft nproc 65536
  • Modify /etc/sysconfig/cpuspeed with the following setting:
    GOVERNOR=performance
The previous settings are identical to the settings specified in the SAS High-Performance Analytics Infrastructure: Installation and Configuration Guide.