Fail to scale Elasticsearch-datanode cluster

Hello All,

Not even sure if I am posting this in the correct place.
I was following along with this document here.
And got to the part about using scale to add more data nodes, but when I attempt increase the scale to any number greater than 1 it fails to add the new containers and displays this error in the web page:
Degraded (Failed to allocate instance [234]: Object [instance:234] failed to satisfy predicate [15000] millis)
When I check the container before rancher deletes it and tries again I get `Error (Scheduling failed: io.cattle.platform.allocator.constraint.ContainerLabelAffinityConstraint@4961904c)’

I am wondering if I am doing this wrong?

My setup is a follows:

Single Rancher Docker install.
1st Machine Specs:
Intel® Core™ i5-5200U CPU @ 2.20GHz
12GB DDR3 ram
250 SSD storage device
Linux Mint 18

2nd Machine Specs:
Dell 710 Server
Intel® Xeon® CPU X5690 @ 3.47GHz
144GB DDR3 ram
3TB RAID10 storage
Debian 8

Software Install specs across all computers:

Rancher v1.1.4
Cattle v0.165.8.4
User Interface v1.1.14
Rancher Compose v0.8.6
Docker version 1.12.3, build 6b644ec

Any help would be appreciated and thank you for reading.