04 Scheduling

This page details how to ensure a container is run on a particular host by using labels.

More information can be found here.

1. Go to Rancher UI

2. Go to menu → Infrastructure → Hosts

3. Edit host ra1 by adding a label: color=blue

4. Edit host ra2 by adding a label: color=red

5. You should see one label on each host

6. Go to menu → Infrastructure → Containers

7. Add container from Docker image alpine and inside Scheduling tab, fill in the fields of a Scheduling Rule

   1. Condition: must
   2. Field: host label
   3. Key: color
   4. Value: yellow

   

8. You should see an error

9. Delete the container and create a new one, but this time, set the color label to red

10. You should see that the container is running on host ra2, where color=red