Install the prerequisites on the Monitoring Agent server

Install the Linux Kerberos client package

On Debian:

sudo apt-get install krb5-user

On RHEL:

sudo yum install krb5-appl-clients.x86_64

Don't forget to create an /etc/krb5.conf file.

Install Python Kerberos packages

On Debian:

sudo apt-get install python-pip libkrb5-dev build-essential python-dev
sudo pip install pymongo
suod pip install kerberos

On RHEL:

sudo yum install gcc python-devel krb5-devel.x86_64 
sudo pip install pymongo
sudo pip install kerberos

Create a krb5.conf file

Create or configure the /etc/krb5.conf file as necessary for your Kerberos environment.

Verify location of kinit application

Make sure that the kinit application is available at /usr/bin/kinit.

Create the Kerberos principal and MongoDB user

1. Create or choose a Kerberos principal for the Monitoring Agent
2. Generate a keytab for the Kerberos principal and copy it to the Monitoring Agent server. Make sure that the keytab file is owned by the same Linux user that you use to run the Monitoring Agent.
3. Create a mongodb user for that Kerberos principal. Please see documentation on required roles [link to auth doc]
4. Enter the Kerberos principal ID and the full path to the keytab in the settings.py file.