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Restart kubelet #688

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merged 2 commits into from
Sep 10, 2024
Merged

Restart kubelet #688

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7167609
restart kubelet
Sep 3, 2024
7348b77
Merge branch 'main' into restart_kubelet
chaitanyaenr Sep 10, 2024
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5 changes: 3 additions & 2 deletions docs/node_scenarios.md
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Expand Up @@ -9,8 +9,9 @@ The following node chaos scenarios are supported:
5. **node_reboot_scenario**: Scenario to reboot the node instance.
6. **stop_kubelet_scenario**: Scenario to stop the kubelet of the node instance.
7. **stop_start_kubelet_scenario**: Scenario to stop and start the kubelet of the node instance.
8. **node_crash_scenario**: Scenario to crash the node instance.
9. **stop_start_helper_node_scenario**: Scenario to stop and start the helper node and check service status.
8. **restart_kubelet_scenario**: Scenario to restart the kubelet of the node instance.
9. **node_crash_scenario**: Scenario to crash the node instance.
10. **stop_start_helper_node_scenario**: Scenario to stop and start the helper node and check service status.


**NOTE**: If the node does not recover from the node_crash_scenario injection, reboot the node to get it back to Ready state.
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20 changes: 20 additions & 0 deletions kraken/node_actions/abstract_node_scenarios.py
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Expand Up @@ -65,6 +65,26 @@ def stop_start_kubelet_scenario(self, instance_kill_count, node, timeout):
self.node_reboot_scenario(instance_kill_count, node, timeout)
logging.info("stop_start_kubelet_scenario has been successfully injected!")


# Node scenario to restart the kubelet
def restart_kubelet_scenario(self, instance_kill_count, node, timeout):
for _ in range(instance_kill_count):
try:
logging.info("Starting restart_kubelet_scenario injection")
logging.info("Restarting the kubelet of the node %s" % (node))
runcommand.run("oc debug node/" + node + " -- chroot /host systemctl restart kubelet &")
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nodeaction.wait_for_not_ready_status(node, timeout, self.kubecli)
nodeaction.wait_for_ready_status(node, timeout, self.kubecli)
logging.info("The kubelet of the node %s has been restarted" % (node))
logging.info("restart_kubelet_scenario has been successfuly injected!")
except Exception as e:
logging.error(
"Failed to restart the kubelet of the node. Encountered following " "exception: %s. Test Failed" % (e)
)
logging.error("restart_kubelet_scenario injection failed!")
sys.exit(1)


# Node scenario to crash the node
def node_crash_scenario(self, instance_kill_count, node, timeout):
for _ in range(instance_kill_count):
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2 changes: 2 additions & 0 deletions kraken/node_actions/run.py
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Expand Up @@ -130,6 +130,8 @@ def inject_node_scenario(action, node_scenario, node_scenario_object, kubecli: K
node_scenario_object.node_reboot_scenario(run_kill_count, single_node, timeout)
elif action == "stop_start_kubelet_scenario":
node_scenario_object.stop_start_kubelet_scenario(run_kill_count, single_node, timeout)
elif action == "restart_kubelet_scenario":
node_scenario_object.restart_kubelet_scenario(run_kill_count, single_node, timeout)
elif action == "stop_kubelet_scenario":
node_scenario_object.stop_kubelet_scenario(run_kill_count, single_node, timeout)
elif action == "node_crash_scenario":
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