Files
krkn/kraken/node_actions/openstack_node_scenarios.py
Pravin Dsilva 918b5fb6d3 Add node level chaos scenarios for bastion node
Signed-off-by: Pravin Dsilva <pravin.d-silva@ibm.com>
2021-02-16 09:04:55 -08:00

176 lines
8.8 KiB
Python

import sys
import time
import logging
import kraken.invoke.command as runcommand
import kraken.node_actions.common_node_functions as nodeaction
from kraken.node_actions.abstract_node_scenarios import abstract_node_scenarios
class OPENSTACKCLOUD:
def __init__(self):
self.Wait = 30
# Start the node instance
def start_instances(self, node):
runcommand.invoke("openstack server start %s" % (node))
logging.info("OPENSTACK CLI INFO: Completed instance start action for node %s" % (node))
# Stop the node instance
def stop_instances(self, node):
runcommand.invoke("openstack server stop %s" % (node))
logging.info("OPENSTACK CLI INFO: Completed instance stop action for node %s" % (node))
# return action_output
# Reboot the node instance
def reboot_instances(self, node):
runcommand.invoke("openstack server reboot --soft %s" % (node))
logging.info("OPENSTACK CLI INFO: Completed instance reboot action for node %s" % (node))
# Wait until the node instance is running
def wait_until_running(self, node):
self.get_instance_status(node, "ACTIVE", self.Wait)
# Wait until the node instance is stopped
def wait_until_stopped(self, node):
self.get_instance_status(node, "SHUTOFF", self.Wait)
# Get instance status
def get_instance_status(self, node, expected_status, timeout):
i = 0
sleeper = 1
while i <= timeout:
instStatus = runcommand.invoke("openstack server show %s | tr -d ' ' |"
"grep '^|status' |"
"cut -d '|' -f3 | tr -d '\n'" % (node))
logging.info("instance status is %s" % (instStatus))
logging.info("expected status is %s" % (expected_status))
if (instStatus.strip() == expected_status):
logging.info("instance status has reached desired status %s" % (instStatus))
return True
time.sleep(sleeper)
i += sleeper
# Get the openstack instance name
def get_openstack_nodename(self, os_node_ip):
server_list = runcommand.invoke("openstack server list | grep %s" % (os_node_ip))
list_of_servers = server_list.split('\n')
for item in list_of_servers:
items = item.split("|")
counter = 0
for i in items:
if i.strip() != "" and counter == 2:
node_name = i.strip()
logging.info("Openstack node name is %s " % (node_name))
counter += 1
continue
item_list = i.split('=')
if len(item_list) == 2 and item_list[-1].strip() == os_node_ip:
return node_name
counter += 1
class openstack_node_scenarios(abstract_node_scenarios):
def __init__(self):
self.openstackcloud = OPENSTACKCLOUD()
# Node scenario to start the node
def node_start_scenario(self, instance_kill_count, node, timeout):
for _ in range(instance_kill_count):
try:
logging.info("Starting node_start_scenario injection")
logging.info("Starting the node %s" % (node))
openstack_node_ip = nodeaction.get_node_ip(node)
openstack_node_name = self.openstackcloud.get_openstack_nodename(openstack_node_ip)
self.openstackcloud.start_instances(openstack_node_name)
self.openstackcloud.wait_until_running(openstack_node_name)
nodeaction.wait_for_ready_status(node, timeout)
logging.info("Node with instance ID: %s is in running state" % (node))
logging.info("node_start_scenario has been successfully injected!")
except Exception as e:
logging.error("Failed to start node instance. Encountered following "
"exception: %s. Test Failed" % (e))
logging.error("node_start_scenario injection failed!")
sys.exit(1)
# Node scenario to stop the node
def node_stop_scenario(self, instance_kill_count, node, timeout):
for _ in range(instance_kill_count):
try:
logging.info("Starting node_stop_scenario injection")
logging.info("Stopping the node %s " % (node))
openstack_node_ip = nodeaction.get_node_ip(node)
openstack_node_name = self.openstackcloud.get_openstack_nodename(openstack_node_ip)
self.openstackcloud.stop_instances(openstack_node_name)
self.openstackcloud.wait_until_stopped(openstack_node_name)
logging.info("Node with instance name: %s is in stopped state" % (node))
nodeaction.wait_for_ready_status(node, timeout)
except Exception as e:
logging.error("Failed to stop node instance. Encountered following exception: %s. "
"Test Failed" % (e))
logging.error("node_stop_scenario injection failed!")
sys.exit(1)
# Node scenario to reboot the node
def node_reboot_scenario(self, instance_kill_count, node, timeout):
for _ in range(instance_kill_count):
try:
logging.info("Starting node_reboot_scenario injection")
logging.info("Rebooting the node %s" % (node))
openstack_node_ip = nodeaction.get_node_ip(node)
openstack_node_name = self.openstackcloud.get_openstack_nodename(openstack_node_ip)
self.openstackcloud.reboot_instances(openstack_node_name)
nodeaction.wait_for_unknown_status(node, timeout)
nodeaction.wait_for_ready_status(node, timeout)
logging.info("Node with instance name: %s has been rebooted" % (node))
logging.info("node_reboot_scenario has been successfuly injected!")
except Exception as e:
logging.error("Failed to reboot node instance. Encountered following exception:"
" %s. Test Failed" % (e))
logging.error("node_reboot_scenario injection failed!")
sys.exit(1)
# Node scenario to start the node
def helper_node_start_scenario(self, instance_kill_count, node_ip, timeout):
for _ in range(instance_kill_count):
try:
logging.info("Starting helper_node_start_scenario injection")
openstack_node_name = self.openstackcloud.get_openstack_nodename(node_ip.strip())
logging.info("Starting the helper node %s" % (openstack_node_name))
self.openstackcloud.start_instances(openstack_node_name)
self.openstackcloud.wait_until_running(openstack_node_name)
logging.info("Helper node with IP: %s is in running state" % (node_ip))
logging.info("node_start_scenario has been successfully injected!")
except Exception as e:
logging.error("Failed to start node instance. Encountered following "
"exception: %s. Test Failed" % (e))
logging.error("helper_node_start_scenario injection failed!")
sys.exit(1)
# Node scenario to stop the node
def helper_node_stop_scenario(self, instance_kill_count, node_ip, timeout):
for _ in range(instance_kill_count):
try:
logging.info("Starting helper_node_stop_scenario injection")
openstack_node_name = self.openstackcloud.get_openstack_nodename(node_ip.strip())
logging.info("Stopping the helper node %s " % (openstack_node_name))
self.openstackcloud.stop_instances(openstack_node_name)
self.openstackcloud.wait_until_stopped(openstack_node_name)
logging.info("Helper node with IP: %s is in stopped state" % (node_ip))
except Exception as e:
logging.error("Failed to stop node instance. Encountered following exception: %s. "
"Test Failed" % (e))
logging.error("helper_node_stop_scenario injection failed!")
sys.exit(1)
def helper_node_service_status(self, node_ip, service, ssh_private_key, timeout):
try:
logging.info("Checking service status on the helper node")
nodeaction.check_service_status(node_ip.strip(), service, ssh_private_key, timeout)
logging.info("Service status checked on %s" % (node_ip))
logging.info("Check service status is successfuly injected!")
except Exception as e:
logging.error("Failed to check service status. Encountered following exception:"
" %s. Test Failed" % (e))
logging.error("helper_node_service_status injection failed!")
sys.exit(1)