First install Puppet Platform:
*** Debian 9
	wget https://apt.puppetlabs.com/puppet6-release-stretch.deb
	dpkg -i puppet6-release-stretch.deb
	apt-get update
***
For other linux distros, look at
	https://puppet.com/docs/puppet/6.0/puppet_platform.html

Install Puppet Agent:
*** Apt-based systems
	apt-get install puppet-agent
***
For other systems, look at
	https://puppet.com/docs/puppet/6.0/install_linux.html

Start puppet and ensure running:
***
	/opt/puppetlabs/bin/puppet resource service puppet ensure=running enable=true
***

Install PuppetDB:
***
	/opt/puppetlabs/bin/puppet resource package puppetdb ensure=latest
***

Install Postgresql
***
	apt install postgresql postgresql-contrib
***

To check version of postgresql
***
	sudo -u postgres psql -c "SELECT version();"
***
This also means you've got a new user called "postgres".

You now have log in to "postgres". From root, it's just
***
	su - postgres
***

Install pg_trgm
***
	psql
	CREATE EXTENSION pg_trgm;
	\q
***
"psql" puts you in the postgresql console.
"\q" quits the console,


Thereafter, you need to create a user and database for puppetDB, and set it to use UTF8
***
	createuser -DRSP puppetdb
	createdb -O puppetdb puppetdb
	/usr/lib/postgresql/9.6/bin/initdb -E UTF8 -D puppetdb
***

Edit /etc/postgresql/9.6/main/pg_hba.conf
We need to allow md5 authentication. Edit line 90 from

	local	all		all			peer
to
	local	all		all			md5


Restart PostgreSQL and ensure you can log in by running
***
	service postgresql restart
	psql -h localhost puppetdb puppetdb
***
Now quit the console ("\q").

Configure puppetDB to use the postgresql database.
This is to be done in /etc/puppetlabs/puppetdb/conf.d/databse.ini
Add the following lines:
***
	subname = //lcoalhost:5432/puppetdb
	username = puppetdb
	password = Pupp37
***
Make sure the host, port, and database are the correct ones.
To figure out the port:
***
	netstat -plunt |grep postgres
***

This should be it for puppetdb. If you wish to configure [many] more settings, look at https://puppet.com/docs/puppetdb/6.0/configure.html

Now to configure the puppet master to use puppetdb.
Install the puppetdb-termini package:
***
	/opt/puppetlabs/bin/puppet resource package puppetdb-termini ensure=latest
***

Go into /etc/puppetlabs/puppet. We need to edit/create three files in here.
Check whether "puppetdb.conf" exists; if not, do
***
	touch puppetdb.conf
***
This creates a file.
In here, we need to add the URL of puppetDB's URL (remember to have it in a DNS either now or later).
Add the following lines:
***
	[main]
	server_urls = https://intern:8081
*** (This is the server name for the puppet master where everything is installed.)
HTTPS is *required*.
Remember to change accordingly.
If you want to check on more settings, look at: https://puppet.com/docs/puppetdb/6.0/puppetdb_connection.html

Edit puppet.conf.
To enable saving facts and catalogs in PuppetDB, edit the [master] block of puppet.conf to reflect the following settings:
***
	[master]
	storeconfigs = true
	storeconfigs_backend = puppetdb
***
Note: The thin_storeconfigs and async_storeconfigs settings should be absent or set to false. If you previously used the Puppet queue daemon (puppetqd), you should now disable it.

Check wheter "routes.yaml" exists; if not, do
***
	touch routes.yaml
***

In that file, add the following lines:
***
	---
	master:
		facts:
			terminus: puppetdb
			cache: yaml
***

The files created above need to be owned by the puppet user. Ensure that this ownership is applied by running the following command:
***
	chown -R puppet:puppet `sudo /opt/puppetlabs/puppet/bin/puppet config print confdir`
***

Now install and re/start puppet and puppetserver:
***
	apt install puppetserver
	systemctl restart puppet puppetserver
***

And turn on puppetdb and ensure running:
***
	/opt/puppetlabs/puppet/bin/puppet resource service puppetdb ensure=running enable=true
***
This might take a while, so consider using "screen", to avoid "ssh broken pipes".

That's it! Puppet, puppetserver and puppetdb are now running!