Setting Resource Limits on Ubuntu

While you can use Warden to automatically set resource limits, you may want to set limits manually.

Rather than relying on Warden to set resource limits automatically using ulimit, you can use the following procedure to set the limits manually.

Edit /etc/security/limits.conf and add a line to set the resource limits. For example, set the resource limits:
```
<MAPR_USER> - nofile 65536 
<MAPR_USER> - nproc 64000
```
Edit /etc/pam.d/su and uncomment the following line.
```
session required pam_limits.so
```
Edit the /etc/pam.d/common-session* files to make sure the following entry is present:
```
# end of pam-auth-update config
session       required       pam_limits.so
```
Use ulimit to verify settings.
Reboot the system.
Run the following command as the mapr user (not root) at a command line: ulimit -n