def node_termination_scenario(self, instance_kill_count, node, timeout):
for _ in range(instance_kill_count):
try:
logging.info("Starting node_termination_scenario injection")
instance_id = self.aws.get_instance_id(node)
logging.info("Terminating the node %s with instance ID: %s " %
(node, instance_id))
self.aws.terminate_instances(instance_id)
self.aws.wait_until_terminated(instance_id)
for _ in range(timeout):
if node not in kubecli.list_nodes():
break
time.sleep(1)
if node in kubecli.list_nodes():
raise Exception("Node could not be terminated")
logging.info("Node with instance ID: %s has been terminated" %
(instance_id))
logging.info(
"node_termination_scenario has been successfuly injected!")
except Exception as e:
logging.error(
"Failed to terminate node instance. Encountered following exception:"
" %s. Test Failed" % (e))
logging.error("node_termination_scenario injection failed!")
sys.exit(1)
def skew_time(scenario):
skew_command = "date --set "
if scenario['action'] == "skew_date":
skewed_date = "00-01-01"
skew_command += skewed_date
elif scenario['action'] == "skew_time":
skewed_time = "01:01:01"
skew_command += skewed_time
if "node" in scenario["object_type"]:
node_names = []
if "object_name" in scenario.keys() and scenario['object_name']:
node_names = scenario['object_name']
elif "label_selector" in scenario.keys(
) and scenario['label_selector']:
node_names = kubecli.list_nodes(scenario['label_selector'])
for node in node_names:
node_debug(node, skew_command)
logging.info("Reset date/time on node " + str(node))
return "node", node_names
elif "pod" in scenario['object_type']:
pod_names = []
if "object_name" in scenario.keys() and scenario['object_name']:
for name in scenario['object_name']:
if "namespace" not in scenario.keys():
logging.error("Need to set namespace when using pod name")
sys.exit(1)
pod_names.append([name, scenario['namespace']])
elif "label_selector" in scenario.keys(
) and scenario['label_selector']:
pod_names = kubecli.get_all_pods(scenario['label_selector'])
elif "namespace" in scenario.keys() and scenario['namespace']:
pod_names = kubecli.list_pods(scenario['namespace'])
counter = 0
for pod_name in pod_names:
pod_names[counter] = [pod_name, scenario['namespace']]
counter += 1
for pod in pod_names:
if len(pod) > 1:
pod_exec(pod[0], skew_command, pod[1])
else:
pod_exec(pod, skew_command, scenario['namespace'])
logging.info("Reset date/time on pod " + str(pod[0]))
return "pod", pod_names
def skew_time(scenario):
skew_command = "date --set "
if scenario["action"] == "skew_date":
skewed_date = "00-01-01"
skew_command += skewed_date
elif scenario["action"] == "skew_time":
skewed_time = "01:01:01"
skew_command += skewed_time
if "node" in scenario["object_type"]:
node_names = []
if "object_name" in scenario.keys() and scenario["object_name"]:
node_names = scenario["object_name"]
elif "label_selector" in scenario.keys() and scenario["label_selector"]:
node_names = kubecli.list_nodes(scenario["label_selector"])
for node in node_names:
node_debug(node, skew_command)
logging.info("Reset date/time on node " + str(node))
return "node", node_names
elif "pod" in scenario["object_type"]:
container_name = scenario.get("container_name", "")
pod_names = []
if "object_name" in scenario.keys() and scenario["object_name"]:
for name in scenario["object_name"]:
if "namespace" not in scenario.keys():
logging.error("Need to set namespace when using pod name")
sys.exit(1)
pod_names.append([name, scenario["namespace"]])
elif "namespace" in scenario.keys() and scenario["namespace"]:
if "label_selector" not in scenario.keys():
logging.info(
"label_selector key not found, querying for all the pods in namespace: %s" % (scenario["namespace"])
)
pod_names = kubecli.list_pods(scenario["namespace"])
else:
logging.info(
"Querying for the pods matching the %s label_selector in namespace %s"
% (scenario["label_selector"], scenario["namespace"])
)
pod_names = kubecli.list_pods(scenario["namespace"], scenario["label_selector"])
counter = 0
for pod_name in pod_names:
pod_names[counter] = [pod_name, scenario["namespace"]]
counter += 1
elif "label_selector" in scenario.keys() and scenario["label_selector"]:
pod_names = kubecli.get_all_pods(scenario["label_selector"])
if len(pod_names) == 0:
logging.info("Cannot find pods matching the namespace/label_selector, please check")
sys.exit(1)
pod_counter = 0
for pod in pod_names:
if len(pod) > 1:
selected_container_name = get_container_name(pod[0], pod[1], container_name)
pod_exec_response = pod_exec(pod[0], skew_command, pod[1], selected_container_name)
if pod_exec_response is False:
logging.error(
"Couldn't reset time on container %s in pod %s in namespace %s"
% (selected_container_name, pod[0], pod[1])
)
sys.exit(1)
pod_names[pod_counter].append(selected_container_name)
else:
selected_container_name = get_container_name(pod, scenario["namespace"], container_name)
pod_exec_response = pod_exec(pod, skew_command, scenario["namespace"], selected_container_name)
if pod_exec_response is False:
logging.error(
"Couldn't reset time on container %s in pod %s in namespace %s"
% (selected_container_name, pod, scenario["namespace"])
)
sys.exit(1)
pod_names[pod_counter].append(selected_container_name)
logging.info("Reset date/time on pod " + str(pod[0]))
pod_counter += 1
return "pod", pod_names
def cluster_shut_down(shut_down_config):
runs = shut_down_config["runs"]
shut_down_duration = shut_down_config["shut_down_duration"]
cloud_type = shut_down_config["cloud_type"]
timeout = shut_down_config["timeout"]
if cloud_type.lower() == "aws":
cloud_object = AWS()
elif cloud_type.lower() == "gcp":
cloud_object = GCP()
elif cloud_type.lower() == "openstack":
cloud_object = OPENSTACKCLOUD()
elif cloud_type.lower() in ["azure", "az"]:
cloud_object = Azure()
else:
logging.error("Cloud type " + cloud_type +
" is not currently supported for cluster shut down")
sys.exit(1)
nodes = kubecli.list_nodes()
node_id = []
for node in nodes:
instance_id = cloud_object.get_instance_id(node)
node_id.append(instance_id)
logging.info("node id list " + str(node_id))
for _ in range(runs):
logging.info("Starting cluster_shut_down scenario injection")
stopping_nodes = set(node_id)
multiprocess_nodes(cloud_object.stop_instances, node_id)
stopped_nodes = stopping_nodes.copy()
while len(stopping_nodes) > 0:
for node in stopping_nodes:
if type(node) is tuple:
node_status = cloud_object.wait_until_stopped(
node[1], node[0], timeout)
else:
node_status = cloud_object.wait_until_stopped(
node, timeout)
# Only want to remove node from stopping list when fully stopped/no error
if node_status:
stopped_nodes.remove(node)
stopping_nodes = stopped_nodes.copy()
logging.info(
"Shutting down the cluster for the specified duration: %s" %
(shut_down_duration))
time.sleep(shut_down_duration)
logging.info("Restarting the nodes")
restarted_nodes = set(node_id)
multiprocess_nodes(cloud_object.start_instances, node_id)
logging.info("Wait for each node to be running again")
not_running_nodes = restarted_nodes.copy()
while len(not_running_nodes) > 0:
for node in not_running_nodes:
if type(node) is tuple:
node_status = cloud_object.wait_until_running(
node[1], node[0], timeout)
else:
node_status = cloud_object.wait_until_running(
node, timeout)
if node_status:
restarted_nodes.remove(node)
not_running_nodes = restarted_nodes.copy()
logging.info(
"Waiting for 150s to allow cluster component initialization")
time.sleep(150)
logging.info("Successfully injected cluster_shut_down scenario!")
