tsuru uses schedulers to chooses which node an unit should be deployed. Previously there was a choice between round robin and segregate scheduler. As of 0.11.1, only segregate scheduler is available and it’s the default choice. This change was made because round robin scheduler was broken, unmaintained and was a worse scheduling mechanism than segregate scheduler.
How it works¶
Segregate scheduler is a scheduler that segregates the units among pools.
First, what you need to do is to define a relation between a pool and teams.
After that you need to register nodes with the
pool metadata information,
indicating to which pool the node belongs.
When deploying an application, the scheduler will choose among the nodes within the application pool.
Registering a node with pool metadata¶
You can use the
docker-node-add to register or create
nodes with the pool metadata:
$ tsuru-admin docker-node-add --register address=http://localhost:2375 pool=pool1