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=====================================
EL9 Quickstart (Rocky Linux and RHEL)
=====================================

Install Warewulf and dependencies
=================================

.. code-block:: bash
sudo dnf groupinstall "Development Tools"
sudo dnf install epel-release
sudo dnf config-manager --set-enabled crb
sudo dnf install golang tftp-server dhcp-server nfs-utils gpgpme-devel libassuan-devel
git clone https://github.com/hpcng/warewulf.git
cd warewulf
make genconfig \
PREFIX=/usr \
BINDIR=/usr/bin \
SYSCONFDIR=/etc \
DATADIR=/usr/share \
LOCALSTATEDIR=/var/lib \
SHAREDSTATEDIR=/var/lib \
MANDIR=/usr/share/man \
INFODIR=/usr/share/info \
DOCDIR=/usr/share/doc \
SRVDIR=/var/lib \
TFTPDIR=/var/lib/tftpboot \
SYSTEMDDIR=/usr/lib/systemd/system \
BASHCOMPDIR=/etc/bash_completion.d/ \
FIREWALLDDIR=/usr/lib/firewalld/services \
WWCLIENTDIR=/warewulf
make all
sudo make install
Configure firewalld
===================

Restart firewalld to register the added service file, add the service
to the default zone, and reload.

.. code-block:: bash
sudo systemctl restart firewalld
sudo firewall-cmd --permanent --add-service warewulf
sudo firewall-cmd --permanent --add-service nfs
sudo firewall-cmd --permanent --add-service tftp
sudo firewall-cmd --reload
Configure the controller
========================

Edit the file ``/etc/warewulf/warewulf.conf`` and ensure that you've
set the appropriate configuration parameters. Here are some of the
defaults for reference assuming that ``192.168.200.1`` is the IP
address of your cluster's private network interface:

.. code-block:: yaml
ipaddr: 192.168.200.1
netmask: 255.255.255.0
warewulf:
port: 9873
secure: false
update interval: 60
dhcp:
enabled: true
range start: 192.168.200.10
range end: 192.168.200.99
template: default
systemd name: dhcpd
tftp:
enabled: true
tftproot: /var/lib/tftpboot
systemd name: tftp
nfs:
systemd name: nfs-server
exports:
- /home
- /var/warewulf
.. note::

The DHCP range ends at ``192.168.200.99`` and as you will see
below, the first node static IP address (post boot) is configured
to ``192.168.200.100``.

Start and enable the Warewulf service
=====================================

.. code-block:: bash
# Start and enable the warewulfd service
sudo systemctl enable --now warewulfd
Configure system services automatically
=======================================

There are a number of services and configurations that Warewulf relies
on to operate. If you wish to configure all services, you can do so
individually (omitting the ``--all``) will print a help and usage
instructions.

.. code-block:: bash
sudo wwctl configure --all
.. note::

If you just installed the system fresh and have SELinux enforcing,
you may need to reboot the system at this stage to properly set the
contexts of the TFTP contents. After rebooting, you might also need
to run ``$ sudo restorecon -Rv /var/lib/tftpboot/`` if there are
errors with TFTP still.

Pull and build the VNFS container (including the kernel)
========================================================

This will pull a basic VNFS container from Docker Hub and import the
default running kernel from the controller node and set both in the
"default" node profile.

.. code-block:: bash
sudo wwctl container import docker://ghcr.io/hpcng/warewulf-rockylinux:9 rocky-9
Set up the default node profile
===============================

Node configurations can be set via node profiles. Each node by default
is configured to be part of the ``default`` node profile, so any
changes you make to that profile will affect all nodes.

The following command will set the container we just imported above to
the ``default`` node profile:

.. code-block:: bash
sudo wwctl profile set --yes --container rocky-8 "default"
Next we set some default networking configurations for the first
ethernet device. On modern Linux distributions, the name of the device
is not critical, as it will be setup according to the HW
address. Because all nodes will share the netmask and gateway
configuration, we can set them in the default profile as follows:

.. code-block:: bash
sudo wwctl profile set --yes --netdev eth0 --netmask 255.255.255.0 --gateway 192.168.200.1 "default"
Once those configurations have been set, you can view the changes by
listing the profiles as follows:

.. code-block:: bash
sudo wwctl profile list -a
Add a node
==========

Adding nodes can be done while setting configurations in one
command. Here we are setting the IP address of ``eth0`` and setting
this node to be discoverable, which will then automatically have the
HW address added to the configuration as the node boots.

Node names must be unique. If you have node groups and/or multiple
clusters, designate them using dot notation.

Note that the full node configuration comes from both cascading
profiles and node configurations which always supersede profile
configurations.

.. code-block:: bash
sudo wwctl node add n0000.cluster --ipaddr 192.168.200.100 --discoverable true
At this point you can view the basic configuration of this node by
typing the following:

.. code-block:: bash
sudo wwctl node list -a n0000.cluster
Turn on your compute node and watch it boot!
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