Using Pools

Overview

Pool is used by provisioners to group nodes and know if an application can be deployed in these nodes. Users can choose which pool to deploy in tsuru app-create.

Tsuru has three types of pool: team, public and default.

Team’s pool are segregated by teams, and cloud administrator should set teams in this pool manually. This pool are just accessible by team’s members.

Public pools are accessible by any user.

Default pool is where apps are deployed when app’s team owner don’t have a pool associated with it or when app’s creator don’t choose any public pool. Ideally this pool is for experimentation and low profile apps, like service dashboard and “in development” apps. You can just have one default pool. This is the old fallback pool, but with a explicit flag.

Adding a pool

In order to create a pool, you should invoke tsuru-admin pool-add:

$ tsuru-admin pool-add pool1

If you want to create a public pool you can do:

$ tsuru-admin pool-add pool1 -p

If you want a default pool, you can create it with:

$ tsuru-admin pool-add pool1 -d

You can overwrite default pool by setting the flag -f:

$ tsuru-admin pool-add new-default-pool -d -f

Adding teams to a pool

Then you can use tsuru-admin pool-teams-add to add teams to the pool that you’ve just created:

$ tsuru-admin pool-teams-add pool1 team1 team2

$ tsuru-admin pool-teams-add pool2 team3

Listing pools

To list pools you do:

$ tsuru-admin pool-list
+-------+-------------+
| Pools | Teams       |
+-------+-------------+
| pool1 | team1 team2 |
| pool2 | team3       |
+-------+-------------+

Removing a pool

If you want to remove a pool, use tsuru-admin pool-remove:

$ tsuru-admin pool-remove pool1

Removing teams from a pool

You can remove one or more teams from a pool using the command tsuru-admin pool-teams-remove:

$ tsuru-admin pool-teams-remove pool1 team1

$ tsuru-admin pool-teams-remove pool1 team1 team2 team3