This is a fork of neicnordic's ganeti-os-nocloud .
This provider seeks to create a "cloud-style" provisioning experience, relying on cloud-init as much as possible and avoiding Ganeti-specific features.
To that end, the provider:
- Uses cloud-init NoCloud data source Method 1 exclusively. There are no attempts to mount or inject data into the filesystem.
- Does not handle NoCloud data source creation or validation. The datasource can be created using one of the methods described in the cloud-init documentation , or by whatever method the user prefers.
Clone the repo on your Ganeti host and copy the contents of the "os" directory into the Ganeti OS directory (which is /usr/share/ganeti/os if you installed via the Debian package).
Obtain cloud-init images for your guest Operating
System. The image is expected to be in qcow2 format, but other
formats supported by qemu-img can be selected by the OS variant
definition.
Place the needed cloud-init images to /var/cache/ganeti-cloudimg and
distribute them to all nodes. The expected file name of an image is
specified in the corresponding configuration file found under
/etc/ganeti/instance-nocloud/variants/. To add a missing OS variant, create the
configuration file and add the name to /etc/ganeti/instance-nocloud/variants.list.
The variant configuration supports the following variables:
IMAGE_FILEis the filename of the image. This option is required.IMAGE_FORMATis passed to the-foption ofqemu-img, by defaultqcow2.IMAGE_DIRis the directory where to look for images, by default/var/cache/ganeti-cloudimg.
Create a NoCloud data source using one of the methods described in the cloud-init documentation and place it on your Ganeti host.
Once the needed image is in place, the VM can be created by specifying
nocloud+variant as the OS, where variant is one of
/etc/ganeti/instance-nocloud/variants.list and data.iso is the NoCloud datasource:
gnt-instance add -o nocloud+${variant} \
-H cdrom_disk_type=ide,cdrom_image_path=${IMAGE_PATH}/data.iso,boot_order=disk \
vm.example.com
The cdrom_disk_type=ide config is necessary, because Ganeti will attempt to boot off the ISO file if you don't explicitly set this.
This has only been tested on a single-node Ganeti cluster, and only with file-based storage. I plan on testing further as time permits, but it would be very much appreciated if you tested the code with other configurations.
Support for the vfat filesystem approach described in the cloud-init documentation is planned.