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    Terraform with cloud-init

    Scheduled Pinned Locked Moved Xen Orchestra
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    • M Offline
      m4xm0rris @ddelnano
      last edited by

      @ddelnano Sir, the only thing I could point out from that pull request is the block in your vm.md where you are templating the variables in a separate block.

      "

      # Template the cloudinit if needed
      template = templatefile("cloud_config.tftpl", {
        hostname = "your-hostname"
        domain = "your.domain.com"
      })
      

      "
      I have no where near enough experience with Terraform to tell if makes any practical difference, but I am able to redner the template inline with the rest of my VM resource definition. eg.

      cloud_network_config = templatefile("cloud_network_config.tftpl", {
         ip = "10.1.55.37"
         netmask = var.network["netmask"]
         gateway = var.network["gateway"]
       })
      

      Just a little tidier IMO, but again have no idea if the way you have done this is better practice etc.

      Thanks 🙂

      1 Reply Last reply Reply Quote 0
      • M Offline
        m4xm0rris @ppikna97
        last edited by

        @ppikna97 Hi! How are you calling the templates in your VM resources? As you can see above from my examples I'm simply pulling both user data and network inline with the rest of my config e.g.

        cloud_config = templatefile("cloud_config.tftpl", {
          hostname = "bw-lab"
          domain = var.network["domain"]
        })
        cloud_network_config = templatefile("cloud_network_config.tftpl", {
          ip = "10.1.55.37"
          netmask = var.network["netmask"]
          gateway = var.network["gateway"]
        })
        
        ppikna97P 1 Reply Last reply Reply Quote 1
        • ppikna97P Offline
          ppikna97 @m4xm0rris
          last edited by

          @m4xm0rris thanks. I was using template_file data source with xenorchestra_cloud_config data source like this:

          905476d3-fd92-4cf1-8d10-2611cd7c8a31-image.png

          But I found answer to both of us... Some video linked me here templatefile vs template_file. Resulting that it is better to use templatefile function to match terraform version and for working with different data types. But in the essence templatefile and template_file do the same thing.

          M 1 Reply Last reply Reply Quote 2
          • M Offline
            m4xm0rris @ppikna97
            last edited by

            @ppikna97 Np, I was also using template_file originally but as its now deprecated there have been no builds released for M1 based Mac (leading/forcing me down the templatefile function route).

            1 Reply Last reply Reply Quote 0
            • B Offline
              bxen @m4xm0rris
              last edited by

              @m4xm0rris This was very helpful. Thank you!

              1 Reply Last reply Reply Quote 0
              • D Offline
                dydomby @m4xm0rris
                last edited by

                @m4xm0rris thanks, it helped much.

                1 Reply Last reply Reply Quote 1
                • olivierlambertO Offline
                  olivierlambert Vates 🪐 Co-Founder CEO
                  last edited by

                  Hello there!

                  If you think some extra doc would be important to avoid searching for the solution, please do so 🙂

                  antoniolfdacruzA 1 Reply Last reply Reply Quote 0
                  • antoniolfdacruzA Offline
                    antoniolfdacruz @olivierlambert
                    last edited by

                    Hi there!

                    Please, delete my question if it is considered bad in any way.

                    I am able to write terraform code that creates a vm in one of our xcp pools.

                    But can't undertand how I must configure the template in order to be able to pass cloud-init userdata and metadata.

                    I am using a simple VM install from ubuntu 20.04.5 ISO, turned into a template. It does not seem to load the yaml templates.

                    code_textalfcruz-adm@local.hcpa.ufrgs.br@volt-ampere:~/terraform-provider-xenorchestra-intro/mkxcpvm2n$ cat main.tf
                    # Infrastructure parametrization
                    
                    variable "xoa_pool_name" {
                      type        = string
                      description = "Pool Name at HCPA's XCP-ng infrastructure managed by XenOrchestra"
                      default     = "UAAPool01"
                    }
                    
                    variable "xoa_template_name" {
                      type        = string
                      description = "Template name at the chosen XCP-ng pool (must be unique between all the HCPA's pools"
                      #default     = "Ubuntu 20.04 LTS Focal Fossa (20211008u)"
                      default = "template-ubuntu-20045"
                    }
                    
                    variable "xoa_sr_name" {
                      type        = string
                      description = "Name of the Storage Resource to place the VM disk(s) at the chosen pool"
                      default     = "EQL01UHAASR01"
                    }
                    
                    variable "xoa_public_vlanid" {
                      type        = string
                      description = "The VLAN id of the public (first) network interface of this VM"
                      default     = "VLAN702"
                    }
                    
                    variable "xoa_private_vlanid" {
                      type        = string
                      description = "The VLAN id of the private (or second) network interface of this VM"
                      default     = "VLAN902"
                    }
                    
                    # VM parametrization
                    
                    variable "vm_memory_max" {
                      type        = number
                      description = "VM's maximum memory (in bytes)"
                      default     = 2147467264
                    }
                    
                    variable "vm_cpus" {
                      type        = number
                      description = "VM's number of virtual CPU cores"
                      default     = 4
                    }
                    
                    variable "vm_name_label" {
                      type        = string
                      description = "The VM's name on the XCP-ng infrastructure (XOA and XCP console)"
                      default     = "Terraformed at HCPA"
                    }
                    
                    variable "vm_disk_name_label" {
                      type        = string
                      description = "The name of the first VM's disk"
                      default     = "Filesystem root"
                    }
                    
                    variable "vm_disk_size" {
                      type        = number
                      description = "The size of this VM's first disk (in bytes - default = template thick / size - 30GB)"
                      default     = 32212254720
                    }
                    
                    variable "vm_public_domain" {
                      type        = string
                      description = "Name of the local intranet domain"
                      default     = "local.hcpa.ufrgs.br"
                    }
                    
                    variable "vm_public_ipv4_address" {
                      type        = string
                      description = "The VM's public (first) interface IPv4 address"
                      default     = "10.70.3.250"
                    }
                    
                    variable "vm_public_ipv4_prefixlen" {
                      type        = string
                      description = "The number of network bits to use for the public IPv4 interface netmask"
                      default     = "23"
                    }
                    
                    variable "vm_public_ipv4_gateway" {
                      type        = string
                      description = "The IPv4 default gateway for the public interface"
                      default     = "10.72.0.1"
                    }
                    
                    # Gattering ambient facts
                    
                    data "xenorchestra_pool" "pool" {
                      name_label = var.xoa_pool_name
                    }
                    
                    data "xenorchestra_template" "vm_template" {
                      name_label = var.xoa_template_name
                    }
                    
                    data "xenorchestra_sr" "sr" {
                      name_label = var.xoa_sr_name
                      pool_id    = data.xenorchestra_pool.pool.id
                    }
                    
                    data "xenorchestra_network" "public_vlanid" {
                      name_label = var.xoa_public_vlanid
                      pool_id    = data.xenorchestra_pool.pool.id
                    }
                    
                    data "xenorchestra_network" "private_vlanid" {
                      name_label = var.xoa_private_vlanid
                      pool_id    = data.xenorchestra_pool.pool.id
                    }
                    
                    # Create cloudinit templates
                    
                    data "template_file" "userdata" {
                      template  = file("./cloud_userdata_cfg.yaml")
                      vars      = {
                        hostname = var.vm_name_label
                        domain   = var.vm_public_domain
                      }
                    }
                    
                    data "template_file" "metadata" {
                      template = file("./cloud_metadata_cfg.yaml")
                      vars     = {
                        hostname  = var.vm_name_label
                        ip        = var.vm_public_ipv4_address
                        prefixlen = var.vm_public_ipv4_prefixlen
                        gateway   = var.vm_public_ipv4_gateway
                      }
                    }
                    
                    resource "xenorchestra_cloud_config" "userdataconfig" {
                      name = "user data config"
                      template = data.template_file.userdata.rendered
                    }
                    
                    resource "xenorchestra_cloud_config" "metadataconfig" {
                      name = "network data config"
                      template = data.template_file.metadata.rendered
                    }
                    
                    # VM creation
                    
                    resource "xenorchestra_vm" "vm" {
                    #  cloud_config = templatefile("cloud_userdata_cfg.yaml", {
                    #    hostname = var.vm_name_label
                    #    domain   = var.vm_public_domain
                    #  })
                    #  cloud_network_config = templatefile("cloud_metadata_cfg.yaml", {
                    #    hostname  = var.vm_name_label
                    #    ip        = var.vm_public_ipv4_address
                    #    prefixlen = var.vm_public_ipv4_prefixlen
                    #    gateway   = var.vm_public_ipv4_gateway
                    #  })
                      cloud_network_config = xenorchestra_cloud_config.metadataconfig.template
                      cloud_config = xenorchestra_cloud_config.userdataconfig.template
                      memory_max = var.vm_memory_max
                      cpus       = var.vm_cpus
                      name_label = var.vm_name_label
                      template   = data.xenorchestra_template.vm_template.id
                    
                      network {
                        network_id = data.xenorchestra_network.public_vlanid.id
                      }
                    
                    #  network {
                    #    network_id = data.xenorchestra_network.private_vlanid.id
                    #  }
                    
                      disk {
                        sr_id      = data.xenorchestra_sr.sr.id
                        name_label = var.vm_disk_name_label
                        size       = var.vm_disk_size
                      }
                    }
                    
                    alfcruz-adm@local.hcpa.ufrgs.br@volt-ampere:~/terraform-provider-xenorchestra-intro/mkxcpvm2n$
                    alfcruz-adm@local.hcpa.ufrgs.br@volt-ampere:~/terraform-provider-xenorchestra-intro/mkxcpvm2n$ cat cloud_userdata_cfg.yaml
                    #cloud-config
                    groups:
                      - aghuse: [aghu]
                    
                    users:
                      # seiseg and aghu / REDACTED | same public key
                      - name: aghu
                        uid: 1003
                        gecos: AGHU Application Standard User
                        passwd: <REDACTED>
                        lock_passwd: true
                        sudo: ['ALL=(ALL) NOPASSWD:ALL']
                        groups: [aghuse]
                        shell: /bin/bash
                        homedir: /opt/aghu
                        no_create_home: false
                    
                    packages:
                      - tree
                    
                    runcmd:
                      - sed -i -e "s/PARAMMYHOSTNAME/${hostname}/g" /etc/postfix/main.cf
                      - sed -i -e "s/PARAMMYHOSTNAME/${hostname}/" /etc/puppetlabs/puppet/puppet.conf
                      - /opt/ds_agent/dsa_control -r
                      - /opt/ds_agent/dsa_control -a dsm://goodman.local.hcpa.ufrgs.br:4120/ "policyid:60"
                      - systemctl disable networker
                      -
                    
                    
                    alfcruz-adm@local.hcpa.ufrgs.br@volt-ampere:~/terraform-provider-xenorchestra-intro/mkxcpvm2n$ cat cloud_metadata_cfg.yaml
                    #cloud-config
                    local-hostname: ${hostname}
                    instance-id: ${hostname}
                    network:
                      version: 2
                      ethernets:
                        ens192:
                          dhcp4: false
                          addresses:
                            - ${ip}/${prefixlen}
                          gateway4: ${gateway}
                          nameservers:
                            search: [local.hcpa.ufrgs.br, hcpa]
                            addresses: [10.10.31.13, 10.10.31.14, 10.10.31.42]
                    growpart:
                      mode: auto
                      devices: ['/dev/sda2']
                      ignore_growroot_disabled: true
                    wait-on-network:
                      ipv4: true
                    
                    alfcruz-adm@local.hcpa.ufrgs.br@volt-ampere:~/terraform-provider-xenorchestra-intro/mkxcpvm2n$
                    
                    
                    
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                    • olivierlambertO Offline
                      olivierlambert Vates 🪐 Co-Founder CEO
                      last edited by

                      Question for @ddelnano I think 🙂

                      antoniolfdacruzA 1 Reply Last reply Reply Quote 0
                      • antoniolfdacruzA Offline
                        antoniolfdacruz @olivierlambert
                        last edited by

                        @olivierlambert Thank you, Olivier. In fact I found in this forum another topic, don't remember by who. But that has already given me enough info to reach the solution. It was about generating images to use with cloud-init. Thank you all!

                        D 2 Replies Last reply Reply Quote 0
                        • D Offline
                          ddelnano Terraform Team @antoniolfdacruz
                          last edited by

                          This post is deleted!
                          1 Reply Last reply Reply Quote 0
                          • D Offline
                            ddelnano Terraform Team @antoniolfdacruz
                            last edited by

                            @antoniolfdacruz glad to hear you were able to figure it out 👍

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