Enable all services.kub3.uk hosts to services.n3t.uk

[jonathanio]

Rename all the services.kub3.uk hosts to services.n3t.uk as they are really network services rather than Kubernetes services. This better reflects their purposes, and many of the frontends, such as ca.n3t.uk and auth.n3t.uk are on the n3t.uk domain already anyway.

Checklist

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[Copilot]

Pull request overview

This PR renames all service hosts from the services.kub3.uk domain to services.n3t.uk to better reflect that these are network services rather than Kubernetes-specific services. This aligns with existing frontend services already using the n3t.uk domain (e.g., ca.n3t.uk, auth.n3t.uk).

Key Changes:

• Updated inventory to reference *.services.n3t.uk instead of *.services.kub3.uk for all service hosts
• Created new host_vars files for the renamed hosts (authentik, ca, dns, cache, netdata, proxmox)
• Updated all cross-references in group_vars files (authentik.yaml, ca.yaml, dns.yaml) to use the new domain
• Updated documentation and examples to reflect the new naming convention

Reviewed changes

Copilot reviewed 9 out of 20 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
inventory.yaml	Updated all service host patterns from services.kub3.uk to services.n3t.uk
plays/host_vars/authentik-01.services.n3t.uk.yaml	Created new host_vars for authentik-01 with PostgreSQL replication configuration
plays/host_vars/authentik-02.services.n3t.uk.yaml	Created new host_vars for authentik-02 referencing new primary hostname
plays/host_vars/authentik-02.services.kub3.uk.yaml	Removed old host_vars file with outdated domain reference
plays/host_vars/ca-01.services.n3t.uk.yaml	Created new host_vars with certificate authority configuration
plays/host_vars/ca-02.services.n3t.uk.yaml	Created new host_vars with certificate authority configuration
plays/host_vars/cache-01.services.n3t.uk.yaml	Created new host_vars file for cache-01
plays/host_vars/cache-02.services.n3t.uk.yaml	Created new host_vars file for cache-02
plays/host_vars/dns-01.services.n3t.uk.yaml	Created new host_vars with BIND RNDC key configuration
plays/host_vars/dns-02.services.n3t.uk.yaml	Created new host_vars with BIND RNDC key configuration
plays/host_vars/netdata-01.services.n3t.uk.yaml	Created new host_vars file for netdata-01
plays/host_vars/netdata-02.services.n3t.uk.yaml	Created new host_vars file for netdata-02
plays/host_vars/proxmox-01.services.n3t.uk.yaml	Created new host_vars with network and Tailscale configuration
plays/host_vars/proxmox-02.services.n3t.uk.yaml	Created new host_vars with network and Tailscale configuration
plays/group_vars/authentik.yaml	Updated hostvar references and PostgreSQL host to use new domain
plays/group_vars/ca.yaml	Updated hostvar references and DNS allowlist, fixed typos in comments
plays/group_vars/dns.yaml	Updated master and slave server references to new domain
roles/cache/defaults/main.yaml	Changed example hostnames from region-specific to generic examples
roles/stepca/README.md	Updated documentation to reference new service domain
README.md	Updated example command to use new service domain

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