RPM repository server

repo-rpm01.osuosl.theforeman.org
type OpenStack VM
OS CentOS Stream 9
CPUs 2
RAM 4GB
Storage /dev/sda (30GB): root, /dev/sdb (100GB): data (LVM)
Managed by rpm.pp

Domains

These domains are all hosted on the server.

  • rpm.theforeman.org
  • stagingrpm.theforeman.org
  • yum.theforeman.org
  • stagingyum.theforeman.org

Backends

This server does not host the domains directly, but has the following backend vhosts configured:

  • rpm-backend.repo-rpm01.osuosl.theforeman.org
  • stagingrpm-backend.repo-rpm01.osuosl.theforeman.org
  • yum-backend.repo-rpm01.osuosl.theforeman.org
  • stagingyum-backend.repo-rpm01.osuosl.theforeman.org

TLS

The backends have TLS certificates from Let's Encrypt, using the HTTP challenge.

This allows the frontend to talk securely to the backends.

Fastly CDN

The frontend is served by the Fastly CDN.

The configuration happens through the ansible/fastly.yml Ansible playbook in this repository.

The major points of the configuration are:

  • Set the backend to <vhost>-backend.repo-rpm01.osuosl.theforeman.org
  • Enable shielding: a central system fetches the assets and then distributes them across the CDN instead of each CDN node fetches them itself, this costs more CDN traffic, but is usually faster
  • Configure a health-check and serve stale content when it fails

TLS

Fastly provides a shared certificate which has theforeman.org and *.theforeman.org as DNSAltName.

This certificate is signed by GlobalSign and we have a _globalsign-domain-verification TXT record in the theforeman.org DNS zone for verification of ownership.

DNS

Each vhost has a CNAME pointing at dualstack.p2.shared.global.fastly.net which is the Fastly global, dualstack loadbalancer.

Alternatively one can use p2.shared.global.fastly.net for an IPv4-only setup.

Volumes

/var/www is mounted on a separate block device. /var/www/vhosts contains the web roots themselves.

Firewall

There is no firewall on the machine itself. OpenStack has the following ports open:

  • 22/tcp (SSH)
  • 80/tcp (HTTP)
  • 443/tcp (HTTPS)