def test_read_write_once(self):
pvc_name = 'pvc-rwo'
KubeUtils.create_pvc_and_wait_to_bound(self,
pvc_name,
TestAccessModes.StorageClass,
access_modes=['ReadWriteOnce'],
volumeMode='Block')
# First Pod Should Succeed
pod1_name = 'pod-1-node-1'
self._create_pod_on_specific_node(pod1_name, pvc_name, node_index=1)
KubeUtils.wait_for_pod_to_be_running(pod1_name)
# Second Pod on the same Node should Fail
pod2_name = 'pod-2-node-1'
self._create_pod_on_specific_node(pod2_name, pvc_name, node_index=1)
KubeUtils.wait_for_pod_to_fail(pod2_name)
# Third Pod on a different Node should Fail
pod3_name = 'pod-3-node-2'
self._create_pod_on_specific_node(pod3_name, pvc_name, node_index=2)
KubeUtils.wait_for_pod_to_fail(pod3_name)
KubeUtils.delete_pod(pod1_name)
KubeUtils.delete_pod(pod2_name)
KubeUtils.delete_pod(pod3_name)
def test_step_2_create_consumer_pods(self):
for i in range(TestConfig.NumberOfVolumes):
pod_name = 'consumer-{}'.format(i)
pvc_name = 'vol-{}'.format(i)
pod = KubeUtils.get_fs_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
for i in range(TestConfig.NumberOfVolumes):
pod_name = 'consumer-{}'.format(i)
KubeUtils.wait_for_pod_to_be_running(pod_name)
def _test_extend_fs_volume(self, storage_class_name, fs_type):
# Create PVC
pvc_name = 'pvc-extend-fs'
KubeUtils.create_pvc_and_wait_to_bound(self,
pvc_name,
storage_class_name,
access_modes=['ReadWriteMany'])
# Create Pod
pod_name = 'extend-fs-consumer'
pod = KubeUtils.get_fs_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
self.addCleanup(lambda: KubeUtils.delete_pod_and_wait(pod_name))
KubeUtils.wait_for_pod_to_be_running(pod_name)
# Edit the PVC to increase the volume capacity
new_size = '5Gi'
pvc_patch = {
'spec': {
'resources': {
'requests': {
'storage': new_size
}
},
}
}
logger.info("Extending Volume {}".format(pvc_name))
KubeUtils.patch_pvc(pvc_name, pvc_patch)
# verify kuberentes object updated
KubeUtils.wait_for_pvc_to_extend(pvc_name, new_size)
# wait for NVMesh Volume to show the updated size
nvmesh_vol_name = KubeUtils.get_nvmesh_vol_name_from_pvc_name(pvc_name)
size_5_gib_in_bytes = 5368709120
NVMeshUtils.wait_for_nvmesh_vol_properties(
nvmesh_vol_name, {'capacity': size_5_gib_in_bytes},
self,
attempts=15)
# check block device size in container (using lsblk)
KubeUtils.wait_for_block_device_resize(self, pod_name, nvmesh_vol_name,
'5G')
# check file system size inside the container (using df -h)
expected_size = '4.9G' if fs_type == FSType.EXT4 else '5.0G'
self._wait_for_file_system_resize(pod_name, expected_size)
def test_block_volume(self):
# create the PVC
pvc_name = 'test-block-volume'
KubeUtils.create_pvc_and_wait_to_bound(self,
pvc_name,
'nvmesh-raid10',
volumeMode='Block')
# Create Consumer pod
pod_name = 'block-volume-consumer'
pod = KubeUtils.get_block_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
KubeUtils.wait_for_pod_to_be_running(pod_name)
self.addCleanup(lambda: KubeUtils.delete_pod_and_wait(pod_name))
def test_block_volume_extend(self):
# Create PVC
pvc_name = 'pvc-extend-block'
KubeUtils.create_pvc_and_wait_to_bound(self,
pvc_name,
'nvmesh-raid10',
volumeMode='Block',
access_modes=['ReadWriteMany'])
# Create Pod
pod_name = 'extend-block-consumer'
pod = KubeUtils.get_block_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
self.addCleanup(lambda: KubeUtils.delete_pod_and_wait(pod_name))
KubeUtils.wait_for_pod_to_be_running(pod_name)
# Edit the PVC to increase the volume capacity
new_size = '5Gi'
pvc_patch = {
'spec': {
'resources': {
'requests': {
'storage': new_size
}
},
}
}
logger.info("Extending Volume {}".format(pvc_name))
KubeUtils.patch_pvc(pvc_name, pvc_patch)
# verify kuberentes object updated
KubeUtils.wait_for_pvc_to_extend(pvc_name, new_size)
# wait for NVMesh Volume to show the updated size
nvmesh_vol_name = KubeUtils.get_nvmesh_vol_name_from_pvc_name(pvc_name)
size_5_gib_in_bytes = 5368709120
NVMeshUtils.wait_for_nvmesh_vol_properties(
nvmesh_vol_name, {'capacity': size_5_gib_in_bytes},
self,
attempts=15)
# check block device size in container (using lsblk)
KubeUtils.wait_for_block_device_resize(self, pod_name, nvmesh_vol_name,
'5G')
def test_migration(self):
# create the PVC
pvc_name = 'pvc-migration-test'
sc_name = 'nvmesh-raid10'
KubeUtils.create_pvc_and_wait_to_bound(self, pvc_name, sc_name)
# Create Deployment
dep_name = 'test-pod-migration'
pod = KubeUtils.get_fs_consumer_pod_template(dep_name, pvc_name)
deployment = KubeUtils.get_deployment_template(dep_name, pod['spec'])
KubeUtils.create_deployment(deployment)
self.addCleanup(lambda: KubeUtils.delete_deployment(dep_name))
attempts = 10
pod = None
while attempts:
logger.debug('Waiting for deployment pods to be scheduled')
pod_list = KubeUtils.get_pods_for_deployment(dep_name)
if len(pod_list):
pod = pod_list[0]
break
attempts = attempts - 1
self.assertNotEqual(attempts, 0, 'Timed out waiting for deployment pod to be scheduled')
time.sleep(1)
initial_pod_name = pod.metadata.name
# Set node as NoSchedule
initial_node = pod.spec.node_name
logger.debug("Tainting node %s with noSchedule" % initial_node)
KubeUtils.node_prevent_schedule(initial_node)
self.addCleanup(lambda: KubeUtils.node_allow_schedule(initial_node))
# Delete the pod (it is expected to be re-created on a different node
KubeUtils.delete_pod(initial_pod_name)
KubeUtils.wait_for_pod_to_delete(initial_pod_name, attempts=120)
# Get the second Pod
pods = KubeUtils.get_pods_for_deployment(dep_name)
pod = pods[0]
second_pod_name = pod.metadata.name
self.assertNotEqual(initial_pod_name, second_pod_name)
self.assertNotEqual(pod.spec.node_name, initial_node)
KubeUtils.wait_for_pod_to_be_running(second_pod_name)
def _test_fs_type(self, fs_type, **kwargs):
# Create Storage class for the specific File System Type
sc_name = self._create_storage_class_for_fs_type(fs_type, **kwargs)
# create the PVC
pvc_name = 'test-{}'.format(fs_type)
KubeUtils.create_pvc_and_wait_to_bound(self, pvc_name, sc_name)
# Create Consumer pod
pod_name = 'consumer-{}'.format(fs_type)
pod = KubeUtils.get_fs_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
def cleanup_pod():
KubeUtils.delete_pod(pod_name)
KubeUtils.wait_for_pod_to_delete(pod_name)
self.addCleanup(cleanup_pod)
KubeUtils.wait_for_pod_to_be_running(pod_name)
def _check_pods_using_same_pvc_are_on_same_zone(self, storage_class_name):
pod_names = set()
for i in range(5):
pod_names.add('pod-' + str(i))
# create PVC
pvc_name = 'topology-single-pvc-' + storage_class_name
KubeUtils.create_pvc_with_cleanup(self,
pvc_name,
storage_class_name,
volumeMode='Block')
# Create Pods
for pod_name in pod_names:
pod = KubeUtils.get_block_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
# cleanup
def pods_cleanup():
for pod_name in pod_names:
KubeUtils.delete_pod(pod_name)
for pod_name in pod_names:
KubeUtils.wait_for_pod_to_delete(pod_name)
self.addCleanup(pods_cleanup)
for pod_name in pod_names:
KubeUtils.wait_for_pod_to_be_running(pod_name, attempts=15)
# collect Pod, Node and Zone data
info = self._collect_pods_info(pod_names)
# at least 2 different zones
all_zones = set()
for pod_name, pod_info in info.iteritems():
all_zones.add(pod_info['zone'])
print('all_zones = %s' % all_zones)
self.assertEqual(len(all_zones), 1)
def test_read_write_once(self):
pvc_name = 'pvc-rwo'
KubeUtils.create_pvc_and_wait_to_bound(self, pvc_name, TestAccessModes.StorageClass, access_modes=['ReadWriteOnce'], volumeMode='Filesystem')
# First Pod Should Succeed
pod = KubeUtils.get_fs_consumer_pod_template('pod-1-node-1', pvc_name)
self.set_pod_node(pod, node_index=1)
self.create_pod_with_cleanup(pod)
KubeUtils.wait_for_pod_to_be_running(pod['metadata']['name'])
# Second Pod on the same Node - should be running
pod = KubeUtils.get_fs_consumer_pod_template('pod-2-node-1', pvc_name)
self.set_pod_node(pod, node_index=1)
self.create_pod_with_cleanup(pod)
KubeUtils.wait_for_pod_to_be_running(pod['metadata']['name'])
# Third Pod on a different Node should Fail
pod = KubeUtils.get_fs_consumer_pod_template('pod-3-node-2', pvc_name)
self.set_pod_node(pod, node_index=2)
self.create_pod_with_cleanup(pod)
KubeUtils.wait_for_pod_event(pod['metadata']['name'], keyword='Access Mode Denied', attempts=20)
def _create_multiple_pods_each_with_own_pvc(self,
storage_class_name,
num_of_pods=6):
pod_names = set()
pvc_names = set()
for i in range(num_of_pods):
pod_names.add('pod-' + str(i))
pvc_names.add('pvc-' + str(i))
# create PVCs
for pvc_name in pvc_names:
KubeUtils.create_pvc_with_cleanup(self,
pvc_name,
storage_class_name,
volumeMode='Block')
# Create Pods
for i in range(num_of_pods):
pod_name = 'pod-' + str(i)
pvc_name = 'pvc-' + str(i)
pod = KubeUtils.get_block_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
# pods cleanups
def cleanup():
for pod_name in pod_names:
KubeUtils.delete_pod(pod_name)
for pod_name in pod_names:
KubeUtils.wait_for_pod_to_delete(pod_name)
self.addCleanup(cleanup)
for pod_name in pod_names:
KubeUtils.wait_for_pod_to_be_running(pod_name, attempts=30)
return pod_names
def _test_fs_type(self, fs_type):
# Create Storage class for the specific File System Type
sc_name = 'raid1-{}'.format(fs_type)
sc_params = {'fsType': fs_type, 'vpg': 'DEFAULT_RAID_1_VPG'}
KubeUtils.create_storage_class(sc_name, sc_params)
self.addCleanup(lambda: KubeUtils.delete_storage_class(sc_name))
# create the PVC
pvc_name = 'test-{}'.format(fs_type)
KubeUtils.create_pvc_and_wait_to_bound(self, pvc_name, sc_name)
# Create Consumer pod
pod_name = 'consumer-{}'.format(fs_type)
pod = KubeUtils.get_fs_consumer_pod_template(pod_name, pvc_name)
KubeUtils.create_pod(pod)
def cleanup_pod():
KubeUtils.delete_pod(pod_name)
KubeUtils.wait_for_pod_to_delete(pod_name)
self.addCleanup(cleanup_pod)
KubeUtils.wait_for_pod_to_be_running(pod_name)
def test_read_only_many_can_read_from_different_pods_and_nodes(self):
pvc_name = 'pvc-rox'
KubeUtils.create_pvc_and_wait_to_bound(self, pvc_name, TestAccessModes.StorageClass, access_modes=['ReadOnlyMany'], volumeMode='Block')
# First Pod Should Succeed
pod = KubeUtils.get_block_consumer_pod_template('pod-1-node-1', pvc_name)
self.set_pod_node(pod, node_index=1)
self.create_pod_with_cleanup(pod)
KubeUtils.wait_for_pod_to_be_running(pod['metadata']['name'])
# Second Pod on the same Node should Succeed
pod = KubeUtils.get_block_consumer_pod_template('pod-2-node-1', pvc_name)
self.set_pod_node(pod, node_index=1)
self.create_pod_with_cleanup(pod)
KubeUtils.wait_for_pod_to_be_running(pod['metadata']['name'])
# Third Pod on a different Node should Succeed
pod = KubeUtils.get_block_consumer_pod_template('pod-3-node-2', pvc_name)
self.set_pod_node(pod, node_index=2)
self.create_pod_with_cleanup(pod)
KubeUtils.wait_for_pod_to_be_running(pod['metadata']['name'])
def test_static_provisioning(self):
# Create NVMesh Volume
nvmesh_volume_name = "csi-testing-static-prov"
volume = Volume(
name=nvmesh_volume_name,
RAIDLevel=RAIDLevels.STRIPED_AND_MIRRORED_RAID_10,
VPG='DEFAULT_RAID_10_VPG',
capacity=5 * GiB,
description="Volume for CSI Driver Static Provisioning")
err, out = NVMeshUtils.getVolumeAPI().save([volume])
self.assertIsNone(err, 'Error Creating NVMesh Volume. %s' % err)
create_res = out[0]
self.assertTrue(
create_res['success'],
'Error Creating NVMesh Volume. %s' % create_res['error'])
self.addCleanup(lambda: NVMeshUtils.getVolumeAPI().delete([volume]))
# Create PV
pv_name = 'pv-name-in-k8s'
accessModes = ['ReadWriteOnce']
volume_size = '5Gi'
sc_name = 'nvmesh-raid10'
pv = KubeUtils.get_pv_for_static_provisioning(pv_name,
nvmesh_volume_name,
accessModes, sc_name,
volume_size)
core_api.create_persistent_volume(pv)
self.addCleanup(lambda: core_api.delete_persistent_volume(pv_name))
pv_list = core_api.list_persistent_volume(
field_selector='metadata.name={}'.format(pv_name))
self.assertIsNotNone(pv_list)
self.assertTrue(len(pv_list.items))
self.assertEqual(pv_list.items[0].metadata.name, pv_name)
# Create PVC
pvc_name = 'pvc-static-prov'
KubeUtils.create_pvc_and_wait_to_bound(self,
pvc_name,
sc_name,
access_modes=accessModes,
storage=volume_size,
volumeMode='Block')
self.addCleanup(lambda: KubeUtils.delete_pvc(pvc_name))
# Create Consumer pod
pod_name = 'pod-static-prov'
cmd = 'echo hello ; while true ; do sleep 60; done'
pod = KubeUtils.get_shell_pod_template(pod_name,
pvc_name,
cmd,
volume_mode_block=True)
KubeUtils.create_pod(pod)
self.addCleanup(lambda: KubeUtils.delete_pod_and_wait(pod_name))
KubeUtils.wait_for_pod_to_be_running(pod_name)
def _wait_for_pods(self, num_of_volumes):
for i in range(num_of_volumes):
pod_name = 'consumer-{}'.format(i)
KubeUtils.wait_for_pod_to_be_running(pod_name)
