» OMI Builder (BSU backed)

Type: osc-bsu

The osc-bsu Packer builder is able to create Outscale OMIs backed by BSU volumes for use in Flexible Compute Unit. For more information on the difference between BSU-backed VMs and VM-store backed VMs, see the "storage for the root device" section in the Outscale documentation.

This builder builds an OMI by launching an Outscale VM from a source OMI, provisioning that running machine, and then creating an OMI from that machine. This is all done in your own Outscale account. The builder will create temporary keypairs, security group rules, etc. that provide it temporary access to the VM while the image is being created. This simplifies configuration quite a bit.

The builder does not manage OMIs. Once it creates an OMI and stores it in your account, it is up to you to use, delete, etc. the OMI.

» Configuration Reference

There are many configuration options available for the builder. They are segmented below into two categories: required and optional parameters. Within each category, the available configuration keys are alphabetized.

In addition to the options listed here, a communicator can be configured for this builder.

» Required:

  • access_key (string) - The access key used to communicate with OUTSCALE. Learn how to set this

  • omi_name (string) - The name of the resulting OMIS that will appear when managing OMIs in the Outscale console or via APIs. This must be unique. To help make this unique, use a function like timestamp (see template engine for more info).

  • vm_type (string) - The Outscale VM type to use while building the OMI, such as t2.small.

  • region (string) - The name of the region, such as us-east-1, in which to launch the Outscale VM to create the OMI.

  • secret_key (string) - The secret key used to communicate with Outscale. Learn how to set this

  • source_omi (string) - The initial OMI used as a base for the newly created machine. source_omi_filter may be used instead to populate this automatically.

» Optional:

  • omi_block_device_mappings (array of block device mappings) - Add one or more block device mappings to the OMI. These will be attached when booting a new VM from your OMI. To add a block device during the Packer build see launch_block_device_mappings below. Your options here may vary depending on the type of VM you use. The block device mappings allow for the following configuration:

    • delete_on_vm_deletion (boolean) - Indicates whether the BSU volume is deleted on VM termination. Default false. NOTE: If this value is not explicitly set to true and volumes are not cleaned up by an alternative method, additional volumes will accumulate after every build.
    • device_name (string) - The device name exposed to the VM (for example, /dev/sdh or xvdh). Required for every device in the block device mapping.
    • iops (number) - The number of I/O operations per second (IOPS) that the volume supports. See the documentation on IOPs for more information
    • no_device (boolean) - Suppresses the specified device included in the block device mapping of the OMI
    • snapshot_id (string) - The ID of the snapshot
    • virtual_name (string) - The virtual device name. See the documentation on Block Device Mapping for more information
    • volume_size (number) - The size of the volume, in GiB. Required if not specifying a snapshot_id
    • volume_type (string) - The volume type. gp2 for General Purpose (SSD) volumes, io1 for Provisioned IOPS (SSD) volumes, and standard for Magnetic volumes
  • omi_description (string) - The description to set for the resulting OMI(s). By default this description is empty. This is a template engine, see Build template data for more information.

  • omi_account_ids (array of strings) - A list of account IDs that have access to launch the resulting OMI(s). By default no additional users other than the user creating the OMIS has permissions to launch it.

  • omi_virtualization_type (string) - The type of virtualization for the OMI you are building. This option must match the supported virtualization type of source_omi. Can be paravirtual or hvm.

  • associate_public_ip_address (boolean) - If using a non-default Net, public IP addresses are not provided by default. If this is toggled, your new VM will get a Public IP.

  • subregion_name (string) - Destination subregion to launch VM in. Leave this empty to allow Outscale to auto-assign.

  • custom_endpoint_oapi (string) - This option is useful if you use a cloud provider whose API is compatible with Outscale OAPI. Specify another endpoint like this outscale.com/oapi/latest.

  • disable_stop_vm (boolean) - Packer normally stops the build VM after all provisioners have run. For Windows VMs, it is sometimes desirable to run Sysprep which will stop the VM for you. If this is set to true, Packer will not stop the VM but will assume that you will send the stop signal yourself through your final provisioner. You can do this with a windows-shell provisioner.

    Note that Packer will still wait for the VM to be stopped, and failing to send the stop signal yourself, when you have set this flag to true, will cause a timeout.

  • bsu_optimized (boolean) - If true, the VM is created with optimized BSU I/O.

  • force_delete_snapshot (boolean) - Force Packer to delete snapshots associated with OMIs, which have been deregistered by force_deregister. Default false.

  • force_deregister (boolean) - Force Packer to first deregister an existing OMIS if one with the same name already exists. Default false.

  • insecure_skip_tls_verify (boolean) - This allows skipping TLS verification of the OAPI endpoint. The default is false.

  • launch_block_device_mappings (array of block device mappings) - Add one or more block devices before the Packer build starts. If you add VM store volumes or BSU volumes in addition to the root device volume, the created OMIS will contain block device mapping information for those volumes. Outscale creates snapshots of the source VM's root volume and any other BSU volumes described here. When you launch an VM from this new OMI, the VM automatically launches with these additional volumes, and will restore them from snapshots taken from the source VM.

  • run_tags (object of key/value strings) - Tags to apply to the VM that is launched to create the OMI. These tags are not applied to the resulting OMIS unless they're duplicated in tags. This is a template engine, see Build template data for more information.

  • run_volume_tags (object of key/value strings) - Tags to apply to the volumes that are launched to create the OMI. These tags are not applied to the resulting OMIS unless they're duplicated in tags. This is a template engine, see Build template data for more information.

  • security_group_id (string) - The ID (not the name) of the security group to assign to the VM. By default this is not set and Packer will automatically create a new temporary security group to allow SSH access. Note that if this is specified, you must be sure the security group allows access to the ssh_port given below.

  • security_group_ids (array of strings) - A list of security groups as described above. Note that if this is specified, you must omit the security_group_id.

  • shutdown_behavior (string) - Automatically terminate VMs on shutdown in case Packer exits ungracefully. Possible values are "stop" and "terminate", default is stop.

  • skip_region_validation (boolean) - Set to true if you want to skip validation of the region configuration option. Default false.

  • snapshot_groups (array of strings) - A list of groups that have access to create volumes from the snapshot(s). By default no groups have permission to create volumes from the snapshot(s). all will make the snapshot publicly accessible.

  • snapshot_users (array of strings) - A list of account IDs that have access to create volumes from the snapshot(s). By default no additional users other than the user creating the OMIS has permissions to create volumes from the backing snapshot(s).

  • snapshot_tags (object of key/value strings) - Tags to apply to snapshot. They will override OMIS tags if already applied to snapshot. This is a template engine, see Build template data for more information.

  • source_omi_filter (object) - Filters used to populate the source_omi field.

    • filters (map of strings) - filters used to select a source_omi.
    • owners (array of strings) - Filters the images by their owner. You may specify one or more Outscale account IDs, "self" (which will use the account whose credentials you are using to run Packer). This option is required for security reasons.

    Example:

    {
      "source_omi_filter": {
        "filters": {
          "virtualization-type": "hvm",
          "image-name": "image-name-in-account",
          "root-device-type": "ebs"
        },
        "owners": ["099720109477"],
      }
    }
    

    This selects an Ubuntu 16.04 HVM BSU OMIS from Canonical. NOTE: This will fail unless exactly one OMIS is returned. In the above example, most_recent will cause this to succeed by selecting the newest image.

  • ssh_keypair_name (string) - If specified, this is the key that will be used for SSH with the machine. The key must match a key pair name loaded up into Outscale. By default, this is blank, and Packer will generate a temporary keypair unless ssh_password is used. ssh_private_key_file or ssh_agent_auth must be specified when ssh_keypair_name is utilized.

  • ssh_agent_auth (boolean) - If true, the local SSH agent will be used to authenticate connections to the source VM. No temporary keypair will be created, and the values of ssh_password and ssh_private_key_file will be ignored. To use this option with a key pair already configured in the source OMI, leave the ssh_keypair_name blank. To associate an existing key pair in Outscale with the source VM, set the ssh_keypair_name field to the name of the key pair.

  • ssh_interface (string) - One of public_ip, private_ip, public_dns, or private_dns. If set, either the public IP address, private IP address, public DNS name or private DNS name will used as the host for SSH. The default behaviour if inside a Net is to use the public IP address if available, otherwise the private IP address will be used. If not in a Net the public DNS name will be used. Also works for WinRM.

Where Packer is configured for an outbound proxy but WinRM traffic should be direct, ssh_interface must be set to private_dns and <region>.compute.internal included in the NO_PROXY environment variable.

  • subnet_id (string) - If using Net, the ID of the subnet, such as subnet-12345def, where Packer will launch the VM. This field is required if you are using an non-default Net.

  • tags (object of key/value strings) - Tags applied to the OMIS and relevant snapshots. This is a template engine, see Build template data for more information.

  • temporary_key_pair_name (string) - The name of the temporary key pair to generate. By default, Packer generates a name that looks like packer_<UUID>, where <UUID> is a 36 character unique identifier.

  • temporary_security_group_source_cidr (string) - An IPv4 CIDR block to be authorized access to the VM, when packer is creating a temporary security group. The default is 0.0.0.0/0 (i.e., allow any IPv4 source). This is only used when security_group_id or security_group_ids is not specified.

  • user_data (string) - User data to apply when launching the VM. Note that you need to be careful about escaping characters due to the templates being JSON. It is often more convenient to use user_data_file, instead. Packer will not automatically wait for a user script to finish before shutting down the VM this must be handled in a provisioner.

  • user_data_file (string) - Path to a file that will be used for the user data when launching the VM.

  • net_id (string) - If launching into a Net subnet, Packer needs the Net ID in order to create a temporary security group within the Net. Requires subnet_id to be set. If this field is left blank, Packer will try to get the Net ID from the subnet_id.

  • net_filter (object) - Filters used to populate the net_id field. Example:

    {
      "net_filter": {
        "filters": {
          "is-default": "false",
          "ip-range": "/24"
        }
      }
    }
    

    This selects the Net with a IPv4 CIDR block of /24. NOTE: This will fail unless exactly one Net is returned.

    • filters (map of strings) - filters used to select a vpc_id. NOTE: This will fail unless exactly one Net is returned.

    net_id take precedence over this.

  • windows_password_timeout (string) - The timeout for waiting for a Windows password for Windows VMs. Defaults to 20 minutes. Example value: 10m

» Basic Example

Here is a basic example. You will need to provide access keys, and may need to change the OMIS IDs according to what images exist at the time the template is run:

{
  "variables": {
    "access_key": "{{env `OUTSCALE_ACCESSKEYID`}}",
    "secret_key": "{{env `OUTSCALE_SECRETKEYID`}}"
  },
  "builders": [
    {
      "type": "osc-bsu",
      "access_key": "{{user `access_key`}}",
      "secret_key": "{{user `secret_key`}}",
      "region": "us-east-1",
      "source_omi": "ami-abcfd0283",
      "vm_type": "t2.micro",
      "ssh_username": "outscale",
      "omi_name": "packer_osc {{timestamp}}"
    }
  ]
}

Further information on locating OMIS IDs and their relationship to VM types and regions can be found in the Outscale Documentation reference.

» Accessing the Instance to Debug

If you need to access the VM to debug for some reason, run the builder with the -debug flag. In debug mode, the Outscale builder will save the private key in the current directory and will output the DNS or IP information as well. You can use this information to access the VM as it is running.

» OMIS Block Device Mappings Example

Here is an example using the optional OMIS block device mappings. Our configuration of launch_block_device_mappings will expand the root volume (/dev/sda) to 40gb during the build (up from the default of 8gb). With ami_block_device_mappings Outscale will attach additional volumes /dev/sdb and /dev/sdc when we boot a new VM of our OMI.

{
  "type": "osc-bsu",
  "access_key": "YOUR KEY HERE",
  "secret_key": "YOUR SECRET KEY HERE",
  "region": "us-east-1",
  "source_omi": "ami-fce3c696",
  "vm_type": "t2.micro",
  "ssh_username": "ubuntu",
  "omi_name": "packer-quick-start {{timestamp}}",
  "launch_block_device_mappings": [
    {
      "device_name": "/dev/sda1",
      "volume_size": 40,
      "volume_type": "gp2",
      "delete_on_vm_deletion": true
    }
  ],
  "omi_block_device_mappings": [
    {
      "device_name": "/dev/sdb",
      "virtual_name": "ephemeral0"
    },
    {
      "device_name": "/dev/sdc",
      "virtual_name": "ephemeral1"
    }
  ]
}

» Build template data

In configuration directives marked as a template engine above, the following variables are available:

  • BuildRegion - The region (for example eu-west-2) where Packer is building the OMI.
  • SourceOMI - The source OMIS ID (for example ami-a2412fcd) used to build the OMI.
  • SourceOMIName - The source OMIS Name (for example ubutu-390) used to build the OMI.
  • SourceOMITags - The source OMIS Tags, as a map[string]string object.

» Tag Example

Here is an example using the optional OMIS tags. This will add the tags OS_Version and Release to the finished OMI. As before, you will need to provide your access keys, and may need to change the source OMIS ID based on what images exist when this template is run:

{
  "type": "osc-bsu",
  "access_key": "YOUR KEY HERE",
  "secret_key": "YOUR SECRET KEY HERE",
  "region": "us-east-1",
  "source_omi": "ami-fce3c696",
  "vm_type": "t2.micro",
  "ssh_username": "ubuntu",
  "omi_name": "packer-quick-start {{timestamp}}",
  "tags": {
    "OS_Version": "Ubuntu",
    "Release": "Latest",
    "Base_OMI_Name": "{{ .SourceOMIName }}",
    "Extra": "{{ .SourceOMITags.TagName }}"
  }
}