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Exclude control-only nodes from IG policy calculations (#10985)

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* Exclude control-only nodes from IG policy calculations

Also, as a reverse to this, exclude execution-only nodes from
  the calculations if the group in question is the controlplane

* Incorporate review comments
This commit is contained in:
Alan Rominger
2021-09-01 08:09:46 -04:00
committed by GitHub
parent 9083425c24
commit 5a6e9a06e2
2 changed files with 45 additions and 1 deletions
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35
awx/main/tests/functional/test_instances.py
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@@ -243,6 +243,41 @@ def test_policy_instance_list_explicitly_pinned(instance_factory, instance_group
assert set(ig_2.instances.all()) == set([i2])
@pytest.mark.django_db
def test_control_plane_policy_exception(controlplane_instance_group):
controlplane_instance_group.policy_instance_percentage = 100
controlplane_instance_group.policy_instance_minimum = 2
controlplane_instance_group.save()
Instance.objects.create(hostname='foo-1', node_type='execution')
apply_cluster_membership_policies()
assert 'foo-1' not in [inst.hostname for inst in controlplane_instance_group.instances.all()]
@pytest.mark.django_db
def test_normal_instance_group_policy_exception():
ig = InstanceGroup.objects.create(name='bar', policy_instance_percentage=100, policy_instance_minimum=2)
Instance.objects.create(hostname='foo-1', node_type='control')
apply_cluster_membership_policies()
assert 'foo-1' not in [inst.hostname for inst in ig.instances.all()]
@pytest.mark.django_db
def test_percentage_as_fraction_of_execution_nodes():
"""
If an instance requests 50 percent of instances, then those should be 50 percent
of available execution nodes (1 out of 2), as opposed to 50 percent
of all available nodes (2 out of 4) which include unusable control nodes
"""
ig = InstanceGroup.objects.create(name='bar', policy_instance_percentage=50)
for i in range(2):
Instance.objects.create(hostname=f'foo-{i}', node_type='control')
for i in range(2):
Instance.objects.create(hostname=f'bar-{i}', node_type='execution')
apply_cluster_membership_policies()
assert ig.instances.count() == 1
assert ig.instances.first().hostname.startswith('bar-')
@pytest.mark.django_db
def test_basic_instance_group_membership(instance_group_factory, default_instance_group, job_factory):
j = job_factory()