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:
-
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.