feat: more subnet documentation and ipv6 change
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README.md
61
README.md
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@ -15,25 +15,40 @@ __ingress.tjo.cloud__ has port-forwarded all public ports to it (22, 25, 80, 443
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__network.tjo.cloud__ establishes Tailscale VPN connection between other network.tjo.cloud VMs. Using subnet routing it makes it possible that each VM can connect to all other VMs on any Proxmox host.
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# Subnets
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We are using `10.0.0.0/16` range for IPv4 as well as `fd74:6a6f:0::/48` for IPv6.
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## Designations
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| Host | IPv4 | IPv6 |
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|------------|---------------|-----------------------|
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| _reserved_ | 10.0.0.0/20 | fd9b:5314:0:0000::/52 |
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| batuu | 10.0.16.0/20 | fd9b:5314:0:1000::/52 |
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| jakku | 10.0.32.0/20 | fd9b:5314:0:2000::/52 |
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| nevaroo | 10.0.48.0/20 | fd9b:5314:0:3000::/52 |
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| | 10.0.64.0/20 | fd9b:5314:0:4000::/52 |
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| | 10.0.80.0/20 | fd9b:5314:0:5000::/52 |
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| | 10.0.96.0/20 | fd9b:5314:0:6000::/52 |
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| | 10.0.112.0/20 | fd9b:5314:0:7000::/52 |
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| | 10.0.128.0/20 | fd9b:5314:0:8000::/52 |
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| | 10.0.144.0/20 | fd9b:5314:0:9000::/52 |
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| | 10.0.160.0/20 | fd9b:5314:0:a000::/52 |
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| | 10.0.176.0/20 | fd9b:5314:0:b000::/52 |
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| | 10.0.192.0/20 | fd9b:5314:0:c000::/52 |
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| | 10.0.208.0/20 | fd9b:5314:0:d000::/52 |
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| | 10.0.224.0/20 | fd9b:5314:0:e000::/52 |
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| | 10.0.240.0/20 | fd9b:5314:0:f000::/52 |
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| _reserved_ | 10.0.0.0/20 | fd74:6a6f:0:0000::/52 |
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| batuu | 10.0.16.0/20 | fd74:6a6f:0:1000::/52 |
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| jakku | 10.0.32.0/20 | fd74:6a6f:0:2000::/52 |
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| nevaroo | 10.0.48.0/20 | fd74:6a6f:0:3000::/52 |
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| | 10.0.64.0/20 | fd74:6a6f:0:4000::/52 |
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| | 10.0.80.0/20 | fd74:6a6f:0:5000::/52 |
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| | 10.0.96.0/20 | fd74:6a6f:0:6000::/52 |
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| | 10.0.112.0/20 | fd74:6a6f:0:7000::/52 |
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| | 10.0.128.0/20 | fd74:6a6f:0:8000::/52 |
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| | 10.0.144.0/20 | fd74:6a6f:0:9000::/52 |
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| | 10.0.160.0/20 | fd74:6a6f:0:a000::/52 |
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| | 10.0.176.0/20 | fd74:6a6f:0:b000::/52 |
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| | 10.0.192.0/20 | fd74:6a6f:0:c000::/52 |
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| | 10.0.208.0/20 | fd74:6a6f:0:d000::/52 |
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| | 10.0.224.0/20 | fd74:6a6f:0:e000::/52 |
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| | 10.0.240.0/20 | fd74:6a6f:0:f000::/52 |
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Each subnet gives us 4096 IP addresses per host.
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### Per host designations
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| Use | IPv4 | IPv6 |
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|------------------|------------------|-----------------------|
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| Virtual Machines | 10.0.(y+0).0/22 | fd74:6a6f:0:y000::/54 |
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| Kubernetes | 10.0.(y+4).0/22 | fd74:6a6f:0:y400::/54 |
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| | 10.0.(y+8).0/22 | fd74:6a6f:0:y800::/54 |
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| | 10.0.(y+12).0/22 | fd74:6a6f:0:yc00::/54 |
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Each section gives us 1024 IP addresses.
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# Setting up new Host
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@ -53,7 +68,13 @@ opkg update
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opkg install ca-bundle kmod-tun iptables-nft kmod-ipt-conntrack kmod-ipt-conntrack-extra kmod-ipt-conntrack-label kmod-ipt-nat kmod-nft-nat
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/etc/init.d/tailscale start
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/etc/init.d/tailscale enable
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tailscale up --accept-routes --advertise-routes=$IPV4_SUBNET,$IPV6_SUBNET --accept-dns=false --ssh
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# Batuu
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tailscale up --accept-routes --advertise-routes=10.0.16.0/20,fd74:6a6f:0:1000::/52 --accept-dns=false --ssh
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# Jakku
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tailscale up --accept-routes --advertise-routes=10.0.32.0/20,fd74:6a6f:0:2000::/52 --accept-dns=false --ssh
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# Nevaroo
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tailscale up --accept-routes --advertise-routes=10.0.48.0/20,fd74:6a6f:0:3000::/52 --accept-dns=false --ssh
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```
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### 6. Configure.
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@ -62,9 +83,9 @@ Once tailscale is up and manually configured (see the config files for guide).
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We can use automated way of maintaining config.
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```
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just deploy-config batuu 10.0.16.1 fd9b:5314:0:1000::
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just deploy-config jakku 10.0.32.1 fd9b:5314:0:2000::
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just deploy-config nevaroo 10.0.48.1 fd9b:5314:0:3000::
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just deploy-config batuu 10.0.16.1 fd74:6a6f:0:1000::
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just deploy-config jakku 10.0.32.1 fd74:6a6f:0:2000::
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just deploy-config nevaroo 10.0.48.1 fd74:6a6f:0:3000::
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```
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# TODO
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@ -16,7 +16,9 @@ config dnsmasq
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config dhcp 'lan'
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option interface 'lan'
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option start '1'
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option limit '254'
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# 1/4 of the subnet space.
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# The rest is reserved for other uses.
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option limit '1021'
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option leasetime '24h'
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option dhcpv4 'server'
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option dhcpv6 'server'
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@ -53,7 +53,12 @@ resource "proxmox_virtual_environment_vm" "nodes" {
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name = "${each.value.host}.${each.value.domain}"
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node_name = each.value.host
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description = "OpenWRT instance for ${each.value.host}."
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description = <<EOT
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An network.tjo.cloud instance for ${each.value.host}.
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Repo: https://code.tjo.space/tjo-cloud/network
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EOT
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tags = [each.value.domain]
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stop_on_destroy = true
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