Adding the ability to associate eips with network interfaces
This commit is contained in:
Evan Carter
Matt Clay
parent
316ccb0e65
commit
c1526ff87b
1 changed files with 103 additions and 48 deletions
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@ -26,6 +26,11 @@ options:
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description:
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- The EC2 instance id
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required: false
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network_interface_id:
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description:
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- The Elastic Network Interface (ENI) id
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required: false
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version_added: "2.0"
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public_ip:
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description:
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- The elastic IP address to associate with the instance.
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@ -57,7 +62,6 @@ options:
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required: false
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default: false
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version_added: "1.6"
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extends_documentation_fragment: aws
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author: "Lorin Hochstein (@lorin) <lorin@nimbisservices.com>"
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notes:
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@ -72,22 +76,21 @@ notes:
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EXAMPLES = '''
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- name: associate an elastic IP with an instance
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ec2_eip: instance_id=i-1212f003 ip=93.184.216.119
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- name: associate an elastic IP with a device
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ec2_eip: network_interface_id=eni-c8ad70f3 ip=93.184.216.119
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- name: disassociate an elastic IP from an instance
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ec2_eip: instance_id=i-1212f003 ip=93.184.216.119 state=absent
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- name: disassociate an elastic IP with a device
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ec2_eip: network_interface_id=eni-c8ad70f3 ip=93.184.216.119 state=absent
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- name: allocate a new elastic IP and associate it with an instance
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ec2_eip: instance_id=i-1212f003
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- name: allocate a new elastic IP without associating it to anything
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action: ec2_eip
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register: eip
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- name: output the IP
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debug: msg="Allocated IP is {{ eip.public_ip }}"
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- name: another way of allocating an elastic IP without associating it to anything
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ec2_eip: state='present'
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- name: provision new instances with ec2
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ec2: keypair=mykey instance_type=c1.medium image=emi-40603AD1 wait=yes'''
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''' group=webserver count=3
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@ -95,7 +98,6 @@ EXAMPLES = '''
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- name: associate new elastic IPs with each of the instances
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ec2_eip: "instance_id={{ item }}"
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with_items: ec2.instance_ids
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- name: allocate a new elastic IP inside a VPC in us-west-2
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ec2_eip: region=us-west-2 in_vpc=yes
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register: eip
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@ -113,27 +115,27 @@ except ImportError:
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class EIPException(Exception):
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pass
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def associate_ip_and_instance(ec2, address, instance_id, check_mode):
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if address_is_associated_with_instance(ec2, address, instance_id):
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def associate_ip_and_device(ec2, address, device_id, check_mode, isinstance=True):
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if address_is_associated_with_device(ec2, address, device_id, isinstance):
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return {'changed': False}
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# If we're in check mode, nothing else to do
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if not check_mode:
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if address.domain == 'vpc':
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res = ec2.associate_address(instance_id,
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allocation_id=address.allocation_id)
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if isinstance:
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if address.domain == "vpc":
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res = ec2.associate_address(device_id, allocation_id=address.allocation_id)
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else:
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res = ec2.associate_address(device_id, public_ip=address.public_ip)
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else:
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res = ec2.associate_address(instance_id,
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public_ip=address.public_ip)
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res = ec2.associate_address(network_interface_id=device_id, allocation_id=address.allocation_id)
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if not res:
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raise EIPException('association failed')
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return {'changed': True}
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def disassociate_ip_and_instance(ec2, address, instance_id, check_mode):
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if not address_is_associated_with_instance(ec2, address, instance_id):
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def disassociate_ip_and_device(ec2, address, device_id, check_mode, isinstance=True):
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if not address_is_associated_with_device(ec2, address, device_id, isinstance):
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return {'changed': False}
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# If we're in check mode, nothing else to do
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@ -158,24 +160,33 @@ def _find_address_by_ip(ec2, public_ip):
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raise
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def _find_address_by_instance_id(ec2, instance_id):
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addresses = ec2.get_all_addresses(None, {'instance-id': instance_id})
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def _find_address_by_device_id(ec2, device_id, isinstance=True):
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if isinstance:
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addresses = ec2.get_all_addresses(None, {'instance-id': device_id})
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else:
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addresses = ec2.get_all_addresses(None, {'network-interface-id': device_id})
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if addresses:
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return addresses[0]
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def find_address(ec2, public_ip, instance_id):
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def find_address(ec2, public_ip, device_id, isinstance=True):
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""" Find an existing Elastic IP address """
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if public_ip:
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return _find_address_by_ip(ec2, public_ip)
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elif instance_id:
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return _find_address_by_instance_id(ec2, instance_id)
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elif device_id and isinstance:
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return _find_address_by_device_id(ec2, device_id)
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elif device_id:
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return _find_address_by_device_id(ec2, device_id, isinstance=False)
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def address_is_associated_with_instance(ec2, address, instance_id):
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""" Check if the elastic IP is currently associated with the instance """
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def address_is_associated_with_device(ec2, address, device_id, isinstance=True):
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""" Check if the elastic IP is currently associated with the device """
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address = ec2.get_all_addresses(address.public_ip)
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if address:
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return address and address.instance_id == instance_id
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if isinstance:
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return address and address[0].instance_id == device_id
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else:
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return address and address[0].network_interface_id == device_id
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return False
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@ -186,7 +197,7 @@ def allocate_address(ec2, domain, reuse_existing_ip_allowed):
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all_addresses = ec2.get_all_addresses(filters=domain_filter)
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unassociated_addresses = [a for a in all_addresses
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if not a.instance_id]
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if not a.device_id]
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if unassociated_addresses:
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return unassociated_addresses[0]
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@ -204,21 +215,33 @@ def release_address(ec2, address, check_mode):
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return {'changed': True}
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def find_instance(ec2, instance_id):
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def find_device(ec2, device_id, isinstance=True):
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""" Attempt to find the EC2 instance and return it """
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reservations = ec2.get_all_reservations(instance_ids=[instance_id])
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if isinstance:
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try:
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reservations = ec2.get_all_reservations(instance_ids=[device_id])
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except boto.exception.EC2ResponseError, e:
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module.fail_json(msg=str(e))
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if len(reservations) == 1:
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instances = reservations[0].instances
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if len(instances) == 1:
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return instances[0]
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if len(reservations) == 1:
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instances = reservations[0].instances
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if len(instances) == 1:
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return instances[0]
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else:
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try:
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interfaces = ec2.get_all_network_interfaces(network_interface_ids=[device_id])
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except boto.exception.EC2ResponseError, e:
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module.fail_json(msg=str(e))
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raise EIPException("could not find instance" + instance_id)
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if len(interfaces) == 1:
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return interfaces[0]
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raise EIPException("could not find instance" + device_id)
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def ensure_present(ec2, domain, address, instance_id,
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reuse_existing_ip_allowed, check_mode):
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def ensure_present(ec2, domain, address, device_id,
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reuse_existing_ip_allowed, check_mode, isinstance=True):
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changed = False
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# Return the EIP object since we've been given a public IP
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@ -229,28 +252,39 @@ def ensure_present(ec2, domain, address, instance_id,
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address = allocate_address(ec2, domain, reuse_existing_ip_allowed)
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changed = True
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if instance_id:
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if device_id:
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# Allocate an IP for instance since no public_ip was provided
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instance = find_instance(ec2, instance_id)
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if isinstance:
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instance = find_device(ec2, device_id)
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# Associate address object (provided or allocated) with instance
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assoc_result = associate_ip_and_device(ec2, address, device_id,
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check_mode)
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else:
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instance = find_device(ec2, device_id, isinstance=False)
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# Associate address object (provided or allocated) with instance
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assoc_result = associate_ip_and_device(ec2, address, device_id,
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check_mode, isinstance=False)
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if instance.vpc_id:
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domain = 'vpc'
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# Associate address object (provided or allocated) with instance
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assoc_result = associate_ip_and_instance(ec2, address, instance_id,
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check_mode)
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changed = changed or assoc_result['changed']
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return {'changed': changed, 'public_ip': address.public_ip}
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def ensure_absent(ec2, domain, address, instance_id, check_mode):
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def ensure_absent(ec2, domain, address, device_id, check_mode, isinstance=True):
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if not address:
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return {'changed': False}
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# disassociating address from instance
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if instance_id:
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return disassociate_ip_and_instance(ec2, address, instance_id,
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check_mode)
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if device_id:
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if isinstance:
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return disassociate_ip_and_device(ec2, address, device_id,
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check_mode)
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else:
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return disassociate_ip_and_device(ec2, address, device_id,
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check_mode, isinstance=False)
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# releasing address
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else:
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return release_address(ec2, address, check_mode)
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@ -260,6 +294,7 @@ def main():
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argument_spec = ec2_argument_spec()
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argument_spec.update(dict(
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instance_id=dict(required=False),
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network_interface_id=dict(required=False),
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public_ip=dict(required=False, aliases=['ip']),
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state=dict(required=False, default='present',
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choices=['present', 'absent']),
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@ -280,6 +315,7 @@ def main():
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ec2 = ec2_connect(module)
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instance_id = module.params.get('instance_id')
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network_interface_id = module.params.get('network_interface_id')
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public_ip = module.params.get('public_ip')
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state = module.params.get('state')
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in_vpc = module.params.get('in_vpc')
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@ -287,20 +323,39 @@ def main():
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reuse_existing_ip_allowed = module.params.get('reuse_existing_ip_allowed')
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try:
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address = find_address(ec2, public_ip, instance_id)
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if network_interface_id:
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address = find_address(ec2, public_ip, network_interface_id, isinstance=False)
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elif instance_id:
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address = find_address(ec2, public_ip, instance_id)
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else:
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address = False
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if state == 'present':
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result = ensure_present(ec2, domain, address, instance_id,
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if instance_id:
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result = ensure_present(ec2, domain, address, instance_id,
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reuse_existing_ip_allowed,
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module.check_mode)
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elif network_interface_id:
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result = ensure_present(ec2, domain, address, network_interface_id,
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reuse_existing_ip_allowed,
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module.check_mode, isinstance=False)
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else:
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address = allocate_address(ec2, domain, reuse_existing_ip_allowed)
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result = {'changed': True, 'public_ip': address.public_ip}
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else:
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result = ensure_absent(ec2, domain, address, instance_id, module.check_mode)
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if network_interface_id:
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result = ensure_absent(ec2, domain, address, network_interface_id, module.check_mode, isinstance=False)
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elif instance_id:
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result = ensure_absent(ec2, domain, address, instance_id, module.check_mode)
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else:
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address = find_address(ec2, public_ip, None)
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result = release_address(ec2, address, module.check_mode)
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except (boto.exception.EC2ResponseError, EIPException) as e:
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module.fail_json(msg=str(e))
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module.exit_json(**result)
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# import module snippets
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from ansible.module_utils.basic import * # noqa
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from ansible.module_utils.ec2 import * # noqa
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