73212dbe39
The purpose of this patch is primarily to unblock the stable/newton gate and secondarily fix the performance issues faced with large clusters, where Magnum creates a volume per node. In the swarm_atomic and k8s_atomic drivers container images are stored in a dedicated cinder volume per cluster node. It is proven that this architecture can be a scalability bottleneck. Make the use of cinder volumes for container images and opt-in option. If docker-volume-size is not specified no cinder volumes will be created. Before, if docker-volume-size wasn't specified the default value was 25. To use cinder volumes for container storage the user will interact with magnum as before, (meaning the valid values are integers starting from 1). Backport: I3394c62a43bbf950b7cf0b86a71b1d9b0481d68f Conflicts: * magnum/drivers/common/swarm_fedora_template_def.py Edit magnum/drivers/swarm_fedora_atomic_v1/template_def.py instead. * magnum/tests/unit/conductor/handlers/test_k8s_cluster_conductor.py Remove invalid unit test for docker_volume_size. Fix unit test which references the driver class Additionally, remove the use of cinder volumes in functioanal tests. 2nd Backport: Ia3b14603c5fc516b00c862c8b9257e0fd23d4b9e Remove service from manager class for tempest. 3rd Backport: I67f79efd2049c05d36ea56691b664417ed358fd8 Closes-Bug: #1638006 Related-Bug: #1422831 Change-Id: I219f02dc1861bd4b6b9c59ecc6af448d09004f18 |
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