net-lab: add hosts and category iteration logic
* add a category variable * add multiple different hosts and enable specifying base image per vm or per category * add comments to explain the code * rename the project * rename the base domain
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vms/main.tf
23
vms/main.tf
@ -48,11 +48,18 @@ variable "sourceimage" {
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type = string
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default = "https://download.fedoraproject.org/pub/fedora/linux/releases/33/Cloud/x86_64/images/Fedora-Cloud-Base-33-1.2.x86_64.qcow2"
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}
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variable "category" {
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type = string
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default = "host"
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}
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# base OS image
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resource "libvirt_volume" "baseosimage" {
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name = "baseosimage_${var.projectname}"
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source = var.sourceimage
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for_each = var.hosts
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# if desired, base image could be specified for a category of devices sharing
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# the base image using name = "baseosimage_${var.projectname}.${each.value.category}"
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name = "baseosimage_${var.projectname}.${each.value.name}"
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source = each.value.sourceimage
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pool = var.baseimagediskpool
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}
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@ -61,8 +68,10 @@ resource "libvirt_volume" "baseosimage" {
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resource "libvirt_volume" "qcow2_volume" {
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for_each = var.hosts
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name = "${each.value.name}.qcow2"
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base_volume_id = libvirt_volume.baseosimage.id
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# let each baseos image have a name after the vm using it
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base_volume_id = libvirt_volume.baseosimage[each.value.name].id
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pool = each.value.diskpool
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# currently a hard constraint to only use qcow2, could become settable
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format = "qcow2"
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size = each.value.disksize
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}
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@ -85,8 +94,8 @@ resource "libvirt_cloudinit_disk" "commoninit" {
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user_data = data.template_file.user_data[each.key].rendered
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}
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# default guest
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resource "libvirt_domain" "default_guest" {
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# net-lab domains loop
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resource "libvirt_domain" "net-lab" {
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for_each = var.hosts
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name = each.value.name
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vcpu = each.value.vcpu
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@ -103,12 +112,12 @@ resource "libvirt_domain" "default_guest" {
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volume_id = element(libvirt_volume.qcow2_volume[each.key].*.id, 1)
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}
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cloudinit = libvirt_cloudinit_disk.commoninit[each.key].id
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cloudinit = libvirt_cloudinit_disk.commoninit[each.value.name].id
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}
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output "hostnames" {
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value = [libvirt_domain.default_guest.*]
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value = [libvirt_domain.net-lab.*]
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}
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@ -1,8 +1,9 @@
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# project name
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projectname = "vms"
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projectname = "net-lab-infra"
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# OS image
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#sourceimage = "https://cloud.centos.org/centos/8/x86_64/images/CentOS-8-GenericCloud-8.3.2011-20201204.2.x86_64.qcow2"
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# sourceimage = "$HOME/.images/CentOS-8-GenericCloud-8.3.2011-20201204.2.x86_64.qcow2"
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# sourceimage = "$HOME/.images/Fedora-Cloud-Base-33-1.2.x86_64.qcow2"
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sourceimage = "https://download.fedoraproject.org/pub/fedora/linux/releases/33/Cloud/x86_64/images/Fedora-Cloud-Base-33-1.2.x86_64.qcow2"
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# the base image is the source image for all VMs created from it
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@ -18,21 +19,55 @@ networkname = "default" # default==NAT
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# RAM in bytes
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# disk size in bytes (disk size must be greater than source image virtual size)
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hosts = {
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"victim" = {
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name = "victim",
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"h_victim" = {
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name = "h_victim",
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vcpu = 1,
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memory = "512",
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memory = "768",
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diskpool = "default",
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disksize = "4300000000",
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disksize = "11000000000",
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mac = "00:00:00:13:37:22",
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sourceimage = "https://cloud.centos.org/centos/8/x86_64/images/CentOS-8-GenericCloud-8.3.2011-20201204.2.x86_64.qcow2",
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category = "host-victim",
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},
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"attacker" = {
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name = "attacker",
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"h_attacker" = {
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name = "h_attacker",
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vcpu = 1,
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memory = "1024",
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diskpool = "default",
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disksize = "4300000000",
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disksize = "5370000000",
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mac = "00:00:00:13:37:23",
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sourceimage = "https://download.fedoraproject.org/pub/fedora/linux/releases/34/Cloud/x86_64/images/Fedora-Cloud-Base-34-1.2.x86_64.qcow2",
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category = "host-attacker",
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},
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"r_edge" = {
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name = "r_edge",
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vcpu = 1,
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memory = "768",
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diskpool = "default",
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disksize = "4300000000",
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mac = "00:00:00:13:37:24",
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sourceimage = "https://download.fedoraproject.org/pub/fedora/linux/releases/33/Cloud/x86_64/images/Fedora-Cloud-Base-33-1.2.x86_64.qcow2",
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category = "router",
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},
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"r_upstream" = {
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name = "r_upstream",
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vcpu = 1,
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memory = "768",
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diskpool = "default",
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disksize = "4300000000",
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mac = "00:00:00:13:37:25",
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sourceimage = "https://download.fedoraproject.org/pub/fedora/linux/releases/33/Cloud/x86_64/images/Fedora-Cloud-Base-33-1.2.x86_64.qcow2",
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category = "router",
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},
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"h_defender" = {
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name = "h_defender",
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vcpu = 1,
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memory = "1024",
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diskpool = "default",
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disksize = "5370000000",
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mac = "00:00:00:13:37:26",
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sourceimage = "https://download.fedoraproject.org/pub/fedora/linux/releases/34/Cloud/x86_64/images/Fedora-Cloud-Base-34-1.2.x86_64.qcow2",
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category = "host-defender",
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},
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}
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