New module: AWS Network load balancer ()

* New module - elb_network_lb

* Fix creating a load balancer without tags

* Linter

Fix purging tags

Remove extra imports

* add support for cross zone lb, doc update and fix tagging

* pep8 fixes

* Add integration tests for elb_network_lb module

* more pep8

* Remove non-applicable option for NLBs

* fix target protocol

* pep8
This commit is contained in:
Rob 2018-05-25 06:38:34 +10:00 committed by Ryan Brown
parent 529ef6446e
commit 858f0fc000
12 changed files with 1095 additions and 8 deletions

View file

@ -13,7 +13,6 @@ try:
except ImportError:
pass
import traceback
import time
from copy import deepcopy
@ -262,7 +261,8 @@ class ApplicationLoadBalancer(ElasticLoadBalancerV2):
def modify_elb_attributes(self):
"""
Update ELB attributes if required
Update Application ELB attributes if required
:return:
"""
@ -338,6 +338,7 @@ class NetworkLoadBalancer(ElasticLoadBalancerV2):
# Ansible module parameters specific to NLBs
self.type = 'network'
self.cross_zone_load_balancing = module.params.get('cross_zone_load_balancing')
def create_elb(self):
"""
@ -354,7 +355,7 @@ class NetworkLoadBalancer(ElasticLoadBalancerV2):
if self.subnets is not None:
params['Subnets'] = self.subnets
params['Scheme'] = self.scheme
if self.tags is not None:
if self.tags:
params['Tags'] = self.tags
try:
@ -369,16 +370,18 @@ class NetworkLoadBalancer(ElasticLoadBalancerV2):
def modify_elb_attributes(self):
"""
Update ELB attributes if required
Update Network ELB attributes if required
:return:
"""
update_attributes = []
if self.deletion_protection and self.elb_attributes['deletion_protection_enabled'] != "true":
update_attributes.append({'Key': 'deletion_protection.enabled', 'Value': "true"})
if self.deletion_protection is not None and not self.deletion_protection and self.elb_attributes['deletion_protection_enabled'] != "false":
update_attributes.append({'Key': 'deletion_protection.enabled', 'Value': "false"})
if self.cross_zone_load_balancing is not None and str(self.cross_zone_load_balancing).lower() != \
self.elb_attributes['load_balancing_cross_zone_enabled']:
update_attributes.append({'Key': 'load_balancing.cross_zone.enabled', 'Value': str(self.cross_zone_load_balancing).lower()})
if self.deletion_protection is not None and str(self.deletion_protection).lower() != self.elb_attributes['deletion_protection_enabled']:
update_attributes.append({'Key': 'deletion_protection.enabled', 'Value': str(self.deletion_protection).lower()})
if update_attributes:
try:

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@ -0,0 +1,419 @@
#!/usr/bin/python
# Copyright: (c) 2018, Rob White (@wimnat)
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = '''
---
module: elb_network_lb
short_description: Manage a Network Load Balancer
description:
- Manage an AWS Network Elastic Load Balancer. See
U(https://aws.amazon.com/blogs/aws/new-network-load-balancer-effortless-scaling-to-millions-of-requests-per-second/) for details.
version_added: "2.6"
requirements: [ boto3 ]
author: "Rob White (@wimnat)"
options:
cross_zone_load_balancing:
description:
- Indicates whether cross-zone load balancing is enabled.
required: false
default: no
type: bool
deletion_protection:
description:
- Indicates whether deletion protection for the ELB is enabled.
required: false
default: no
type: bool
listeners:
description:
- A list of dicts containing listeners to attach to the ELB. See examples for detail of the dict required. Note that listener keys
are CamelCased.
required: false
name:
description:
- The name of the load balancer. This name must be unique within your AWS account, can have a maximum of 32 characters, must contain only alphanumeric
characters or hyphens, and must not begin or end with a hyphen.
required: true
purge_listeners:
description:
- If yes, existing listeners will be purged from the ELB to match exactly what is defined by I(listeners) parameter. If the I(listeners) parameter is
not set then listeners will not be modified
default: yes
type: bool
purge_tags:
description:
- If yes, existing tags will be purged from the resource to match exactly what is defined by I(tags) parameter. If the I(tags) parameter is not set then
tags will not be modified.
required: false
default: yes
type: bool
subnet_mappings:
description:
- A list of dicts containing the IDs of the subnets to attach to the load balancer. You can also specify the allocation ID of an Elastic IP
to attach to the load balancer. You can specify one Elastic IP address per subnet. This parameter is mutually exclusive with I(subnets)
required: false
subnets:
description:
- A list of the IDs of the subnets to attach to the load balancer. You can specify only one subnet per Availability Zone. You must specify subnets from
at least two Availability Zones. Required if state=present. This parameter is mutually exclusive with I(subnet_mappings)
required: false
scheme:
description:
- Internet-facing or internal load balancer. An ELB scheme can not be modified after creation.
required: false
default: internet-facing
choices: [ 'internet-facing', 'internal' ]
state:
description:
- Create or destroy the load balancer.
required: true
choices: [ 'present', 'absent' ]
tags:
description:
- A dictionary of one or more tags to assign to the load balancer.
required: false
wait:
description:
- Whether or not to wait for the network load balancer to reach the desired state.
type: bool
wait_timeout:
description:
- The duration in seconds to wait, used in conjunction with I(wait).
extends_documentation_fragment:
- aws
- ec2
notes:
- Listeners are matched based on port. If a listener's port is changed then a new listener will be created.
- Listener rules are matched based on priority. If a rule's priority is changed then a new rule will be created.
'''
EXAMPLES = '''
# Note: These examples do not set authentication details, see the AWS Guide for details.
# Create an ELB and attach a listener
- elb_network_lb:
name: myelb
subnets:
- subnet-012345678
- subnet-abcdef000
listeners:
- Protocol: TCP # Required. The protocol for connections from clients to the load balancer (Only TCP is available) (case-sensitive).
Port: 80 # Required. The port on which the load balancer is listening.
DefaultActions:
- Type: forward # Required. Only 'forward' is accepted at this time
TargetGroupName: mytargetgroup # Required. The name of the target group
state: present
# Create an ELB with an attached Elastic IP address
- elb_network_lb:
name: myelb
subnet_mappings:
- SubnetId: subnet-012345678
AllocationId: eipalloc-aabbccdd
listeners:
- Protocol: TCP # Required. The protocol for connections from clients to the load balancer (Only TCP is available) (case-sensitive).
Port: 80 # Required. The port on which the load balancer is listening.
DefaultActions:
- Type: forward # Required. Only 'forward' is accepted at this time
TargetGroupName: mytargetgroup # Required. The name of the target group
state: present
# Remove an ELB
- elb_network_lb:
name: myelb
state: absent
'''
RETURN = '''
availability_zones:
description: The Availability Zones for the load balancer.
returned: when state is present
type: list
sample: "[{'subnet_id': 'subnet-aabbccddff', 'zone_name': 'ap-southeast-2a', 'load_balancer_addresses': []}]"
canonical_hosted_zone_id:
description: The ID of the Amazon Route 53 hosted zone associated with the load balancer.
returned: when state is present
type: string
sample: ABCDEF12345678
created_time:
description: The date and time the load balancer was created.
returned: when state is present
type: string
sample: "2015-02-12T02:14:02+00:00"
deletion_protection_enabled:
description: Indicates whether deletion protection is enabled.
returned: when state is present
type: string
sample: true
dns_name:
description: The public DNS name of the load balancer.
returned: when state is present
type: string
sample: internal-my-elb-123456789.ap-southeast-2.elb.amazonaws.com
idle_timeout_timeout_seconds:
description: The idle timeout value, in seconds.
returned: when state is present
type: string
sample: 60
ip_address_type:
description: The type of IP addresses used by the subnets for the load balancer.
returned: when state is present
type: string
sample: ipv4
listeners:
description: Information about the listeners.
returned: when state is present
type: complex
contains:
listener_arn:
description: The Amazon Resource Name (ARN) of the listener.
returned: when state is present
type: string
sample: ""
load_balancer_arn:
description: The Amazon Resource Name (ARN) of the load balancer.
returned: when state is present
type: string
sample: ""
port:
description: The port on which the load balancer is listening.
returned: when state is present
type: int
sample: 80
protocol:
description: The protocol for connections from clients to the load balancer.
returned: when state is present
type: string
sample: HTTPS
certificates:
description: The SSL server certificate.
returned: when state is present
type: complex
contains:
certificate_arn:
description: The Amazon Resource Name (ARN) of the certificate.
returned: when state is present
type: string
sample: ""
ssl_policy:
description: The security policy that defines which ciphers and protocols are supported.
returned: when state is present
type: string
sample: ""
default_actions:
description: The default actions for the listener.
returned: when state is present
type: string
contains:
type:
description: The type of action.
returned: when state is present
type: string
sample: ""
target_group_arn:
description: The Amazon Resource Name (ARN) of the target group.
returned: when state is present
type: string
sample: ""
load_balancer_arn:
description: The Amazon Resource Name (ARN) of the load balancer.
returned: when state is present
type: string
sample: arn:aws:elasticloadbalancing:ap-southeast-2:0123456789:loadbalancer/app/my-elb/001122334455
load_balancer_name:
description: The name of the load balancer.
returned: when state is present
type: string
sample: my-elb
load_balancing_cross_zone_enabled:
description: Indicates whether cross-zone load balancing is enabled.
returned: when state is present
type: string
sample: true
scheme:
description: Internet-facing or internal load balancer.
returned: when state is present
type: string
sample: internal
state:
description: The state of the load balancer.
returned: when state is present
type: dict
sample: "{'code': 'active'}"
tags:
description: The tags attached to the load balancer.
returned: when state is present
type: dict
sample: "{
'Tag': 'Example'
}"
type:
description: The type of load balancer.
returned: when state is present
type: string
sample: network
vpc_id:
description: The ID of the VPC for the load balancer.
returned: when state is present
type: string
sample: vpc-0011223344
'''
from ansible.module_utils.aws.core import AnsibleAWSModule
from ansible.module_utils.ec2 import camel_dict_to_snake_dict, boto3_tag_list_to_ansible_dict, compare_aws_tags
from ansible.module_utils.aws.elbv2 import NetworkLoadBalancer, ELBListeners, ELBListener
def create_or_update_elb(elb_obj):
"""Create ELB or modify main attributes. json_exit here"""
if elb_obj.elb:
# ELB exists so check subnets, security groups and tags match what has been passed
# Subnets
if not elb_obj.compare_subnets():
elb_obj.modify_subnets()
# Tags - only need to play with tags if tags parameter has been set to something
if elb_obj.tags is not None:
# Delete necessary tags
tags_need_modify, tags_to_delete = compare_aws_tags(boto3_tag_list_to_ansible_dict(elb_obj.elb['tags']),
boto3_tag_list_to_ansible_dict(elb_obj.tags), elb_obj.purge_tags)
if tags_to_delete:
elb_obj.delete_tags(tags_to_delete)
# Add/update tags
if tags_need_modify:
elb_obj.modify_tags()
else:
# Create load balancer
elb_obj.create_elb()
# ELB attributes
elb_obj.update_elb_attributes()
elb_obj.modify_elb_attributes()
# Listeners
listeners_obj = ELBListeners(elb_obj.connection, elb_obj.module, elb_obj.elb['LoadBalancerArn'])
listeners_to_add, listeners_to_modify, listeners_to_delete = listeners_obj.compare_listeners()
# Delete listeners
for listener_to_delete in listeners_to_delete:
listener_obj = ELBListener(elb_obj.connection, elb_obj.module, listener_to_delete, elb_obj.elb['LoadBalancerArn'])
listener_obj.delete()
listeners_obj.changed = True
# Add listeners
for listener_to_add in listeners_to_add:
listener_obj = ELBListener(elb_obj.connection, elb_obj.module, listener_to_add, elb_obj.elb['LoadBalancerArn'])
listener_obj.add()
listeners_obj.changed = True
# Modify listeners
for listener_to_modify in listeners_to_modify:
listener_obj = ELBListener(elb_obj.connection, elb_obj.module, listener_to_modify, elb_obj.elb['LoadBalancerArn'])
listener_obj.modify()
listeners_obj.changed = True
# If listeners changed, mark ELB as changed
if listeners_obj.changed:
elb_obj.changed = True
# Get the ELB again
elb_obj.update()
# Get the ELB listeners again
listeners_obj.update()
# Update the ELB attributes
elb_obj.update_elb_attributes()
# Convert to snake_case and merge in everything we want to return to the user
snaked_elb = camel_dict_to_snake_dict(elb_obj.elb)
snaked_elb.update(camel_dict_to_snake_dict(elb_obj.elb_attributes))
snaked_elb['listeners'] = []
for listener in listeners_obj.current_listeners:
snaked_elb['listeners'].append(camel_dict_to_snake_dict(listener))
# Change tags to ansible friendly dict
snaked_elb['tags'] = boto3_tag_list_to_ansible_dict(snaked_elb['tags'])
elb_obj.module.exit_json(changed=elb_obj.changed, **snaked_elb)
def delete_elb(elb_obj):
if elb_obj.elb:
elb_obj.delete()
elb_obj.module.exit_json(changed=elb_obj.changed)
def main():
argument_spec = (
dict(
cross_zone_load_balancing=dict(type='bool'),
deletion_protection=dict(type='bool'),
listeners=dict(type='list',
elements='dict',
options=dict(
Protocol=dict(type='str', required=True),
Port=dict(type='int', required=True),
SslPolicy=dict(type='str'),
Certificates=dict(type='list'),
DefaultActions=dict(type='list', required=True)
)
),
name=dict(required=True, type='str'),
purge_listeners=dict(default=True, type='bool'),
purge_tags=dict(default=True, type='bool'),
subnets=dict(type='list'),
subnet_mappings=dict(type='list'),
scheme=dict(default='internet-facing', choices=['internet-facing', 'internal']),
state=dict(choices=['present', 'absent'], type='str'),
tags=dict(type='dict'),
wait_timeout=dict(type='int'),
wait=dict(type='bool')
)
)
module = AnsibleAWSModule(argument_spec=argument_spec,
mutually_exclusive=[['subnets', 'subnet_mappings']])
# Check for subnets or subnet_mappings if state is present
state = module.params.get("state")
if state == 'present':
if module.params.get("subnets") is None and module.params.get("subnet_mappings") is None:
module.fail_json(msg="'subnets' or 'subnet_mappings' is required when state=present")
# Quick check of listeners parameters
listeners = module.params.get("listeners")
if listeners is not None:
for listener in listeners:
for key in listener.keys():
if key == 'Protocol' and listener[key] != 'TCP':
module.fail_json(msg="'Protocol' must be 'TCP'")
connection = module.client('elbv2')
connection_ec2 = module.client('ec2')
elb = NetworkLoadBalancer(connection, connection_ec2, module)
if state == 'present':
create_or_update_elb(elb)
else:
delete_elb(elb)
if __name__ == '__main__':
main()

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@ -0,0 +1,2 @@
cloud/aws
unsupported

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@ -0,0 +1,6 @@
---
# load balancer and target group names have to be less than 32 characters
# the 8 digit identifier at the end of resource_prefix helps determine during which test something
# was created and allows tests to be run in parallel
nlb_name: "my-nlb-{{ resource_prefix | regex_search('([0-9]+)$') }}"
tg_name: "my-tg-{{ resource_prefix | regex_search('([0-9]+)$') }}"

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@ -0,0 +1,3 @@
dependencies:
- prepare_tests
- setup_ec2

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@ -0,0 +1,205 @@
- block:
- name: set connection information for all tasks
set_fact:
aws_connection_info: &aws_connection_info
aws_access_key: "{{ aws_access_key }}"
aws_secret_key: "{{ aws_secret_key }}"
security_token: "{{ security_token }}"
region: "{{ aws_region }}"
no_log: yes
- name: create VPC
ec2_vpc_net:
cidr_block: 10.228.228.0/22
name: "{{ resource_prefix }}_vpc"
state: present
<<: *aws_connection_info
register: vpc
- name: create internet gateway
ec2_vpc_igw:
vpc_id: "{{ vpc.vpc.id }}"
state: present
tags:
Name: "{{ resource_prefix }}"
<<: *aws_connection_info
register: igw
- name: create subnets
ec2_vpc_subnet:
cidr: "{{ item.cidr }}"
az: "{{ aws_region}}{{ item.az }}"
vpc_id: "{{ vpc.vpc.id }}"
state: present
tags:
Created_By: "{{ resource_prefix }}"
Public: "{{ item.public }}"
<<: *aws_connection_info
with_items:
- cidr: 10.228.228.0/24
az: "a"
public: True
- cidr: 10.228.229.0/24
az: "b"
public: True
- cidr: 10.228.230.0/24
az: "a"
public: False
- cidr: 10.228.231.0/24
az: "b"
public: False
register: subnets
- ec2_vpc_subnet_facts:
filters:
vpc-id: "{{ vpc.vpc.id }}"
<<: *aws_connection_info
register: vpc_subnets
- name: create list of subnet ids
set_fact:
nlb_subnets: "{{ vpc_subnets|json_query('subnets[?tags.Public == `True`].id') }}"
private_subnets: "{{ vpc_subnets|json_query('subnets[?tags.Public != `True`].id') }}"
- name: create a route table
ec2_vpc_route_table:
vpc_id: "{{ vpc.vpc.id }}"
<<: *aws_connection_info
tags:
Name: igw-route
Created: "{{ resource_prefix }}"
subnets: "{{ nlb_subnets + private_subnets }}"
routes:
- dest: 0.0.0.0/0
gateway_id: "{{ igw.gateway_id }}"
register: route_table
- ec2_group:
name: "{{ resource_prefix }}"
description: "security group for Ansible NLB integration tests"
state: present
vpc_id: "{{ vpc.vpc.id }}"
rules:
- proto: tcp
from_port: 1
to_port: 65535
cidr_ip: 0.0.0.0/0
- proto: all
ports: 80
cidr_ip: 10.228.228.0/22
<<: *aws_connection_info
register: sec_group
- name: create a target group for testing
elb_target_group:
name: "{{ tg_name }}"
protocol: tcp
port: 80
vpc_id: "{{ vpc.vpc.id }}"
state: present
<<: *aws_connection_info
register: tg
- include_tasks: test_nlb_bad_listener_options.yml
- include_tasks: test_nlb_tags.yml
- include_tasks: test_creating_nlb.yml
- include_tasks: test_nlb_with_asg.yml
- include_tasks: test_modifying_nlb_listeners.yml
- include_tasks: test_deleting_nlb.yml
always:
- name: destroy NLB
elb_network_lb:
name: "{{ nlb_name }}"
state: absent
wait: yes
wait_timeout: 600
<<: *aws_connection_info
ignore_errors: yes
- name: destroy target group if it was created
elb_target_group:
name: "{{ tg_name }}"
protocol: tcp
port: 80
vpc_id: "{{ vpc.vpc.id }}"
state: absent
wait: yes
wait_timeout: 600
<<: *aws_connection_info
register: remove_tg
retries: 5
delay: 3
until: remove_tg is success
when: tg is defined
ignore_errors: yes
- name: destroy sec group
ec2_group:
name: "{{ sec_group.group_name }}"
description: "security group for Ansible NLB integration tests"
state: absent
vpc_id: "{{ vpc.vpc.id }}"
<<: *aws_connection_info
register: remove_sg
retries: 10
delay: 5
until: remove_sg is success
ignore_errors: yes
- name: remove route table
ec2_vpc_route_table:
vpc_id: "{{ vpc.vpc.id }}"
route_table_id: "{{ route_table.route_table.route_table_id }}"
lookup: id
state: absent
<<: *aws_connection_info
register: remove_rt
retries: 10
delay: 5
until: remove_rt is success
ignore_errors: yes
- name: destroy subnets
ec2_vpc_subnet:
cidr: "{{ item.cidr }}"
vpc_id: "{{ vpc.vpc.id }}"
state: absent
<<: *aws_connection_info
register: remove_subnet
retries: 10
delay: 5
until: remove_subnet is success
with_items:
- cidr: 10.228.228.0/24
- cidr: 10.228.229.0/24
- cidr: 10.228.230.0/24
- cidr: 10.228.231.0/24
ignore_errors: yes
- name: destroy internet gateway
ec2_vpc_igw:
vpc_id: "{{ vpc.vpc.id }}"
tags:
Name: "{{ resource_prefix }}"
state: absent
<<: *aws_connection_info
register: remove_igw
retries: 10
delay: 5
until: remove_igw is success
ignore_errors: yes
- name: destroy VPC
ec2_vpc_net:
cidr_block: 10.228.228.0/22
name: "{{ resource_prefix }}_vpc"
state: absent
<<: *aws_connection_info
register: remove_vpc
retries: 10
delay: 5
until: remove_vpc is success
ignore_errors: yes

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@ -0,0 +1,48 @@
- block:
- name: set connection information for all tasks
set_fact:
aws_connection_info: &aws_connection_info
aws_access_key: "{{ aws_access_key }}"
aws_secret_key: "{{ aws_secret_key }}"
security_token: "{{ security_token }}"
region: "{{ aws_region }}"
no_log: yes
- name: create NLB with a listener
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
listeners:
- Protocol: TCP
Port: 80
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed
- nlb.listeners|length == 1
- name: test idempotence creating NLB with a listener
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
listeners:
- Protocol: TCP
Port: 80
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
register: nlb
- assert:
that:
- not nlb.changed
- nlb.listeners|length == 1

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@ -0,0 +1,50 @@
- block:
- name: set connection information for all tasks
set_fact:
aws_connection_info: &aws_connection_info
aws_access_key: "{{ aws_access_key }}"
aws_secret_key: "{{ aws_secret_key }}"
security_token: "{{ security_token }}"
region: "{{ aws_region }}"
no_log: yes
- name: destroy NLB with listener
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: absent
listeners:
- Protocol: TCP
Port: 80
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
wait: yes
wait_timeout: 300
register: nlb
- assert:
that:
- nlb.changed
- name: test idempotence
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: absent
listeners:
- Protocol: TCP
Port: 80
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
wait: yes
wait_timeout: 300
register: nlb
- assert:
that:
- not nlb.changed

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@ -0,0 +1,88 @@
- block:
- name: set connection information for all tasks
set_fact:
aws_connection_info: &aws_connection_info
aws_access_key: "{{ aws_access_key }}"
aws_secret_key: "{{ aws_secret_key }}"
security_token: "{{ security_token }}"
region: "{{ aws_region }}"
no_log: yes
- name: add a listener
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
listeners:
- Protocol: TCP
Port: 80
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
- Protocol: TCP
Port: 443
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed
- nlb.listeners|length == 2
- name: test an omitted listener will not be removed without purge_listeners
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
purge_listeners: false
listeners:
- Protocol: TCP
Port: 80
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
register: nlb
- assert:
that:
- not nlb.changed
- nlb.listeners|length == 2
- name: remove the rule
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
purge_listeners: true
listeners:
- Protocol: TCP
Port: 80
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed
- nlb.listeners|length == 1
- name: remove listener from NLB
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
listeners: []
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed
- not nlb.listeners

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- block:
- name: set connection information for all tasks
set_fact:
aws_connection_info: &aws_connection_info
aws_access_key: "{{ aws_access_key }}"
aws_secret_key: "{{ aws_secret_key }}"
security_token: "{{ security_token }}"
region: "{{ aws_region }}"
no_log: yes
- name: test creating an NLB with invalid listener options
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
#security_groups: "{{ sec_group.group_id }}"
state: present
listeners:
- Protocol: TCP
Port: 80
Certificates: {'CertificateArn': 'test', 'IsDefault': 'True'}
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
ignore_errors: yes
register: nlb
- assert:
that:
- nlb is failed
- "'unable to convert to list' in nlb.msg"
- name: test creating an NLB without providing required listener options
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
#security_groups: "{{ sec_group.group_id }}"
state: present
listeners:
- Port: 80
<<: *aws_connection_info
ignore_errors: yes
register: nlb
- assert:
that:
- nlb is failed
- '"missing required arguments" in nlb.msg'
- '"Protocol" in nlb.msg'
- '"DefaultActions" in nlb.msg'
- name: test creating an NLB providing an invalid listener option type
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
#security_groups: "{{ sec_group.group_id }}"
state: present
listeners:
- Protocol: TCP
Port: "bad type"
DefaultActions:
- Type: forward
TargetGroupName: "{{ tg_name }}"
<<: *aws_connection_info
ignore_errors: yes
register: nlb
- assert:
that:
- nlb is failed
- "'unable to convert to int' in nlb.msg"

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- block:
- name: set connection information for all tasks
set_fact:
aws_connection_info: &aws_connection_info
aws_access_key: "{{ aws_access_key }}"
aws_secret_key: "{{ aws_secret_key }}"
security_token: "{{ security_token }}"
region: "{{ aws_region }}"
no_log: yes
- name: create NLB with no listeners
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed
- name: re-create NLB with no listeners
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
<<: *aws_connection_info
register: nlb
- assert:
that:
- not nlb.changed
- name: add tags to NLB
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
tags:
created_by: "NLB test {{ resource_prefix }}"
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed
- 'nlb.tags.created_by == "NLB test {{ resource_prefix }}"'
- name: test tags are not removed if unspecified
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
<<: *aws_connection_info
register: nlb
- assert:
that:
- not nlb.changed
- 'nlb.tags.created_by == "NLB test {{ resource_prefix }}"'
- name: remove tags from NLB
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
tags: {}
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed
- not nlb.tags
- name: test idempotence
elb_network_lb:
name: "{{ nlb_name }}"
subnets: "{{ nlb_subnets }}"
state: present
tags: {}
<<: *aws_connection_info
register: nlb
- assert:
that:
- not nlb.changed
- not nlb.tags
- name: destroy NLB with no listeners
elb_network_lb:
name: "{{ nlb_name }}"
state: absent
<<: *aws_connection_info
register: nlb
- assert:
that:
- nlb.changed

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- block:
# create instances
- name: set connection information for all tasks
set_fact:
aws_connection_info: &aws_connection_info
aws_access_key: "{{ aws_access_key }}"
aws_secret_key: "{{ aws_secret_key }}"
security_token: "{{ security_token }}"
region: "{{ aws_region }}"
no_log: yes
- ec2_ami_facts:
<<: *aws_connection_info
filters:
architecture: x86_64
virtualization-type: hvm
root-device-type: ebs
name: "amzn-ami-hvm*"
register: amis
- set_fact:
latest_amazon_linux: "{{ amis.images | sort(attribute='creation_date') | last }}"
- ec2_asg:
<<: *aws_connection_info
state: absent
name: "{{ resource_prefix }}-webservers"
wait_timeout: 900
- ec2_lc:
<<: *aws_connection_info
name: "{{ resource_prefix }}-web-lcfg"
state: absent
- name: Create launch config for testing
ec2_lc:
<<: *aws_connection_info
name: "{{ resource_prefix }}-web-lcfg"
assign_public_ip: true
image_id: "{{ latest_amazon_linux.image_id }}"
security_groups: "{{ sec_group.group_id }}"
instance_type: t2.micro
user_data: |
#!/bin/bash
set -x
yum update -y --nogpgcheck
yum install -y --nogpgcheck httpd
echo "Hello Ansiblings!" >> /var/www/html/index.html
service httpd start
volumes:
- device_name: /dev/xvda
volume_size: 10
volume_type: gp2
delete_on_termination: true
- name: Create autoscaling group for app server fleet
ec2_asg:
<<: *aws_connection_info
name: "{{ resource_prefix }}-webservers"
vpc_zone_identifier: "{{ nlb_subnets }}"
launch_config_name: "{{ resource_prefix }}-web-lcfg"
termination_policies:
- OldestLaunchConfiguration
- Default
health_check_period: 600
health_check_type: EC2
replace_all_instances: true
min_size: 0
max_size: 2
desired_capacity: 1
wait_for_instances: true
target_group_arns:
- "{{ tg.target_group_arn }}"
always:
- ec2_asg:
<<: *aws_connection_info
state: absent
name: "{{ resource_prefix }}-webservers"
wait_timeout: 900
ignore_errors: yes
- ec2_lc:
<<: *aws_connection_info
name: "{{ resource_prefix }}-web-lcfg"
state: absent
ignore_errors: yes