Automation Assembler template designs can deploy a cluster of machines and attach a cluster of disks.
To deploy clusters of machines and disks, take advantage of the allocatePerInstance
resource flag, and count.index
and map_to_object
expression syntax in your cloud templates.
The following cloud template code examples can serve as guidelines for designs that deploy clusters.
Two machines that share a disk cluster
resources: app0: type: Cloud.Machine allocatePerInstance: true properties: image: ubuntu flavor: small attachedDisks: '${map_to_object(slice(resource.disk[*].id, 0,2), "source")}' app1: type: Cloud.Machine allocatePerInstance: true properties: image: ubuntu flavor: small attachedDisks: '${map_to_object(slice(resource.disk[*].id, 2,4), "source")}' disk: type: Cloud.Volume allocatePerInstance: true properties: count: 4 capacityGb: 5
Variable number of machines with one disk each
inputs: count: type: integer default: 2 resources: Cloud_Machine_1: type: Cloud.Machine allocatePerInstance: true properties: image: ubuntu flavor: small count: '${input.count}' attachedDisks: '${map_to_object(slice(resource.disk[*].id, count.index, count.index + 1), "source")}' disk: type: Cloud.Volume allocatePerInstance: true properties: count: '${input.count}' capacityGb: 5
Variable number of machines with two disks each
inputs: count: type: integer default: 2 resources: Cloud_Machine_1: type: Cloud.Machine allocatePerInstance: true properties: image: ubuntu flavor: small count: ${input.count} attachedDisks: '${map_to_object(slice(resource.disk[*].id, 2*count.index, 2*(count.index + 1)), "source")}' disk: type: Cloud.Volume allocatePerInstance: true properties: count: ${2*input.count} capacityGb: 5
Set disk sizes at request time
inputs: disksize: type: array minItems: 2 maxItems: 2 items: type: object properties: size: type: integer resources: app: type: Cloud.Machine allocatePerInstance: true properties: flavor: small image: ubuntu attachedDisks: ${map_to_object(slice(resource.disk[*].id, 0, 2), 'source')} disk: type: Cloud.Volume allocatePerInstance: true properties: count: 2 capacityGb: ${input.disksize[count.index].size}