Scheduler

Sets scheduling rules for the container.

Use case

Rancher uses Tag based scheduling which is set via container labels.

All options life inside the scheduler json object.

enable: Can be set to false to disable creating the scheduling rules without removing them. Defaults to true
scheduler: Scheduler to use. Currently the default and only implementation available is rancher
same-host: Setting this to true will allow multiple containers to be scheduled on the same host. Defaults to false
tags: Object or array of tags. A host must have these tags set for a container to be scheduled there. Defaults to []
- Arrays or numerical object variables will be created as $VALUE=true tag rule
- non-numerical object variables will be created as $NAME=$VALUE tag rule
forbid-tags: Object or array of forbidden tags. see tags except the host must NOT have these tags. Defaults to []
should-not-tags: Object or array of tags. Prefer hosts which do not have these tags set. Defaults to []

Schedule all environments on hosts which have the tag apps=true and prefer hosts which do not have fallback=true

{
	"defaults":{
		"scheduler":{
			"tags":[
				"apps",
			],
			"should-not-tags":[
				"fallback"
			]
		}
	}
}

Schedule the single environment test on hosts which have the tag apps=true and prefer hosts which do not have fallback=true

{
	"environments":{
		"test":{
			"scheduler":{
				"tags":[
					"apps",
				],
				"should-not-tags":[
					"fallback"
				]
			}
		}
	}
}