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_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 _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 _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 _create_pod_on_specific_node(self, pod_name, pvc_name, node_index):
pod = KubeUtils.get_block_consumer_pod_template(pod_name, pvc_name)
pod['spec']['nodeSelector'] = {'worker-index': str(node_index)}
KubeUtils.create_pod(pod)
self.addCleanup(lambda: KubeUtils.delete_pod_and_wait(pod_name))