A bash script to create a Kerberos database for the Realm and create the Principal entries for the Users, Services etc

kerberos-create-kdc-db.sh

# Create Kerberos database for the realm
sudo kdb5_util create -s -r MDBKRB5.NET
# Loading random data
# Initializing database '/var/kerberos/krb5kdc/principal' for realm 'MDBKRB5.NET',
# master key name 'K/[email protected]'
# You will be prompted for the database Master Password.
# It is important that you NOT FORGET this password.
# Enter KDC database master key:
# Re-enter KDC database master key to verify:

sudo systemctl start krb5kdc.service
sudo systemctl start kadmin.service
sudo systemctl enable krb5kdc.service
sudo systemctl enable kadmin.service

# Set up a Kerberos principal with admin privileges
# and principal for the users, KDC host, and MongoDB server
# for simplicity I used <user/service name>@123 as the password
# Commands you need to run
sudo kadmin.local
# Authenticating as principal root/[email protected] with password.
# kadmin.local:
# Run the below commands at kadmin.local prompt

addprinc root/admin
# Enter password for principal "root/[email protected]":
# Re-enter password for principal "root/[email protected]":
# Principal "root/[email protected]" created.
addprinc alex
# Enter password for principal "[email protected]":
# Re-enter password for principal "[email protected]":
# Principal "[email protected]" created.
addprinc bob
# Enter password for principal "[email protected]":
# Re-enter password for principal "[email protected]":
# Principal "[email protected]" created.
addprinc host/kdc.mdbkrb5.net
# Enter password for principal "host/[email protected]":
# Re-enter password for principal "host/[email protected]":
# Principal "host/[email protected]" created.
addprinc mongodb/mdb01.mdbkrb5.net
# Enter password for principal "mongodb/[email protected]":
# Re-enter password for principal "mongodb/[email protected]":
# Principal "mongodb/[email protected]" created.

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