def apply(self):
inventory_path = get_inventory_path(
self.cluster_model.specification.name)
# copy resources
self.copy_resources()
# create inventory
inventory_creator = AnsibleInventoryCreator(self.cluster_model,
self.config_docs)
inventory_creator.create()
time.sleep(10)
# generate vars
ansible_vars_generator = AnsibleVarsGenerator(
inventory_creator=inventory_creator)
ansible_vars_generator.generate()
# pre-flight to prepare machines
self.pre_flight(inventory_path)
# run roles
enabled_roles = inventory_creator.get_enabled_roles()
for role in enabled_roles:
self.ansible_command.run_playbook(inventory=inventory_path,
playbook_path=self.playbook_path(
to_role_name(role)))
#post-flight after we are done
self.post_flight(inventory_path)
def assert_no_master_downscale(self):
components = self.cluster_model.specification.components
# Skip downscale assertion for single machine clusters
if ('single_machine' in components) and (int(
components['single_machine']['count']) > 0):
return
cluster_name = self.cluster_model.specification.name
inventory_path = get_inventory_path(cluster_name)
if os.path.isfile(inventory_path):
existing_inventory = InventoryManager(loader=DataLoader(),
sources=inventory_path)
both_present = all([
'kubernetes_master' in existing_inventory.list_groups(),
'kubernetes_master' in components,
])
if both_present:
prev_master_count = len(
existing_inventory.list_hosts(pattern='kubernetes_master'))
next_master_count = int(
components['kubernetes_master']['count'])
if prev_master_count > next_master_count:
raise Exception(
"ControlPlane downscale is not supported yet. Please revert your 'kubernetes_master' count to previous value or increase it to scale up Kubernetes."
)
def run(self):
inventory_path = get_inventory_path(
self.cluster_model.specification.name)
# create inventory on every run
self.inventory_creator.create()
time.sleep(10)
copy_files_recursively(
AnsibleRunner.ANSIBLE_PLAYBOOKS_PATH,
get_ansible_path(self.cluster_model.specification.name))
# todo: install packages to run ansible on Red Hat hosts
self.ansible_command.run_task_with_retries(
hosts="all",
inventory=inventory_path,
module="raw",
args="cat /etc/lsb-release | grep -i DISTRIB_ID | grep -i ubuntu && "
"sudo apt-get install -y python-simplejson "
"|| echo 'Cannot find information about Ubuntu distribution'",
retries=5)
self.ansible_vars_generator.run()
common_play_result = self.ansible_command.run_playbook_with_retries(
inventory=inventory_path,
playbook_path=os.path.join(
get_ansible_path(self.cluster_model.specification.name),
"common.yml"),
retries=5)
if common_play_result != 0:
return
enabled_roles = self.inventory_creator.get_enabled_roles()
for role in enabled_roles:
play_result = self.ansible_command.run_playbook_with_retries(
inventory=inventory_path,
playbook_path=os.path.join(
get_ansible_path(self.cluster_model.specification.name),
to_role_name(role) + ".yml"),
retries=1)
if play_result != 0:
break