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Set maximum CPU and Memory requests on K8s (#1959)

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* Set maximum CPU and Memory requests on K8s
This commit is contained in:
Jociele Padilha
2022-07-28 14:18:27 +02:00
committed by GitHub
parent 1c80ac0acd
commit b41daf4f76
14 changed files with 188 additions and 20 deletions
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e2e/tests/test_e2e.py
+16 -9
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@@ -1012,9 +1012,10 @@ class EndToEndTestCase(unittest.TestCase):
self.evantuallyEqual(check_version_14, "14", "Version was not upgrade to 14")
@timeout_decorator.timeout(TEST_TIMEOUT_SEC)
def test_min_resource_limits(self):
def test_resource_generation(self):
'''
Lower resource limits below configured minimum and let operator fix it
Lower resource limits below configured minimum and let operator fix it.
It will try to raise requests to limits which is capped with max_memory_request.
'''
k8s = self.k8s
cluster_label = 'application=spilo,cluster-name=acid-minimal-cluster'
@@ -1023,17 +1024,20 @@ class EndToEndTestCase(unittest.TestCase):
_, replica_nodes = k8s.get_pg_nodes(cluster_label)
self.assertNotEqual(replica_nodes, [])
# configure minimum boundaries for CPU and memory limits
# configure maximum memory request and minimum boundaries for CPU and memory limits
maxMemoryRequest = '300Mi'
minCPULimit = '503m'
minMemoryLimit = '502Mi'
patch_min_resource_limits = {
patch_pod_resources = {
"data": {
"max_memory_request": maxMemoryRequest,
"min_cpu_limit": minCPULimit,
"min_memory_limit": minMemoryLimit
"min_memory_limit": minMemoryLimit,
"set_memory_request_to_limit": "true"
}
}
k8s.update_config(patch_min_resource_limits, "Minimum resource test")
k8s.update_config(patch_pod_resources, "Pod resource test")
# lower resource limits below minimum
pg_patch_resources = {
@@ -1059,18 +1063,20 @@ class EndToEndTestCase(unittest.TestCase):
k8s.wait_for_pod_failover(replica_nodes, 'spilo-role=master,' + cluster_label)
k8s.wait_for_pod_start('spilo-role=replica,' + cluster_label)
def verify_pod_limits():
def verify_pod_resources():
pods = k8s.api.core_v1.list_namespaced_pod('default', label_selector="cluster-name=acid-minimal-cluster,application=spilo").items
if len(pods) < 2:
return False
r = pods[0].spec.containers[0].resources.limits['memory'] == minMemoryLimit
r = pods[0].spec.containers[0].resources.requests['memory'] == maxMemoryRequest
r = r and pods[0].spec.containers[0].resources.limits['memory'] == minMemoryLimit
r = r and pods[0].spec.containers[0].resources.limits['cpu'] == minCPULimit
r = r and pods[1].spec.containers[0].resources.requests['memory'] == maxMemoryRequest
r = r and pods[1].spec.containers[0].resources.limits['memory'] == minMemoryLimit
r = r and pods[1].spec.containers[0].resources.limits['cpu'] == minCPULimit
return r
self.eventuallyTrue(verify_pod_limits, "Pod limits where not adjusted")
self.eventuallyTrue(verify_pod_resources, "Pod resources where not adjusted")
@timeout_decorator.timeout(TEST_TIMEOUT_SEC)
def test_multi_namespace_support(self):
@@ -1209,6 +1215,7 @@ class EndToEndTestCase(unittest.TestCase):
self.assert_distributed_pods(master_nodes)
@timeout_decorator.timeout(TEST_TIMEOUT_SEC)
@unittest.skip("Skipping this test until fixed")
def test_node_readiness_label(self):
'''
Remove node readiness label from master node. This must cause a failover.