System Settings for the Infrastructure

Understand the system requirements for a successful SAS High-Performance Analytics infrastructure deployment before you begin. The lists that follow offer recommended settings for the analytics infrastructure on every machine in the cluster or blade in the data appliance:

Edit the /etc/sudoers file to disable the requirement for a terminal:

Defaults !requiretty

Also, when issuing a sudo command with the simultaneous commands (simcp, simsh) be sure to place sudo first. For example:

sudo /opt/TKGrid/bin/simsh ls -dl /root

These steps address a known bug in Red Hat Linux:

https://bugzilla.redhat.com/show_bug.cgi?id=1020147
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 SAS High-Performance Analytics components require approximately 1.1 GB of disk space. This estimate does not include the disk space that is needed for storing data that is added to Hadoop Distributed File System (HDFS) for use by the SAS High-Performance Analytics environment.

For more information, refer to the system requirements for your SAS solution.

Last updated: June 19, 2017