671 lines
24 KiB
Python
671 lines
24 KiB
Python
#!/usr/bin/python
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# Copyright 2013 Google Inc.
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: gce
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version_added: "1.4"
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short_description: create or terminate GCE instances
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description:
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- Creates or terminates Google Compute Engine (GCE) instances. See
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U(https://cloud.google.com/products/compute-engine) for an overview.
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Full install/configuration instructions for the gce* modules can
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be found in the comments of ansible/test/gce_tests.py.
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options:
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image:
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description:
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- image string to use for the instance
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required: false
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default: "debian-7"
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instance_names:
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description:
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- a comma-separated list of instance names to create or destroy
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required: false
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default: null
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machine_type:
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description:
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- machine type to use for the instance, use 'n1-standard-1' by default
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required: false
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default: "n1-standard-1"
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metadata:
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description:
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- a hash/dictionary of custom data for the instance;
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'{"key":"value", ...}'
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required: false
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default: null
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service_account_email:
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version_added: "1.5.1"
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description:
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- service account email
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required: false
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default: null
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service_account_permissions:
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version_added: "2.0"
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description:
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- service account permissions (see
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U(https://cloud.google.com/sdk/gcloud/reference/compute/instances/create),
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--scopes section for detailed information)
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required: false
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default: null
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choices: [
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"bigquery", "cloud-platform", "compute-ro", "compute-rw",
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"useraccounts-ro", "useraccounts-rw", "datastore", "logging-write",
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"monitoring", "sql", "sql-admin", "storage-full", "storage-ro",
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"storage-rw", "taskqueue", "userinfo-email"
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]
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pem_file:
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version_added: "1.5.1"
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description:
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- path to the pem file associated with the service account email
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This option is deprecated. Use 'credentials_file'.
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required: false
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default: null
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credentials_file:
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version_added: "2.1.0"
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description:
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- path to the JSON file associated with the service account email
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default: null
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required: false
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project_id:
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version_added: "1.5.1"
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description:
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- your GCE project ID
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required: false
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default: null
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name:
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description:
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- identifier when working with a single instance
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required: false
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network:
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description:
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- name of the network, 'default' will be used if not specified
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required: false
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default: "default"
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subnetwork:
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description:
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- name of the subnetwork in which the instance should be created
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required: false
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default: null
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version_added: "2.2"
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persistent_boot_disk:
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description:
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- if set, create the instance with a persistent boot disk
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required: false
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default: "false"
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disks:
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description:
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- a list of persistent disks to attach to the instance; a string value
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gives the name of the disk; alternatively, a dictionary value can
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define 'name' and 'mode' ('READ_ONLY' or 'READ_WRITE'). The first entry
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will be the boot disk (which must be READ_WRITE).
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required: false
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default: null
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version_added: "1.7"
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state:
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description:
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- desired state of the resource
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required: false
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default: "present"
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choices: ["active", "present", "absent", "deleted", "started", "stopped", "terminated"]
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tags:
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description:
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- a comma-separated list of tags to associate with the instance
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required: false
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default: null
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zone:
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description:
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- the GCE zone to use
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required: true
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default: "us-central1-a"
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ip_forward:
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version_added: "1.9"
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description:
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- set to true if the instance can forward ip packets (useful for
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gateways)
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required: false
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default: "false"
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external_ip:
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version_added: "1.9"
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description:
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- type of external ip, ephemeral by default; alternatively, a list of fixed gce ips or ip names can be given (if there is not enough specified ip, 'ephemeral' will be used). Specify 'none' if no external ip is desired.
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required: false
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default: "ephemeral"
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disk_auto_delete:
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version_added: "1.9"
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description:
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- if set boot disk will be removed after instance destruction
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required: false
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default: "true"
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preemptible:
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version_added: "2.1"
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description:
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- if set to true, instances will be preemptible and time-limited.
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(requires libcloud >= 0.20.0)
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required: false
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default: "false"
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requirements:
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- "python >= 2.6"
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- "apache-libcloud >= 0.13.3, >= 0.17.0 if using JSON credentials,
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>= 0.20.0 if using preemptible option"
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notes:
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- Either I(name) or I(instance_names) is required.
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author: "Eric Johnson (@erjohnso) <erjohnso@google.com>"
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'''
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EXAMPLES = '''
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# Basic provisioning example. Create a single Debian 7 instance in the
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# us-central1-a Zone of n1-standard-1 machine type.
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- local_action:
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module: gce
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name: test-instance
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zone: us-central1-a
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machine_type: n1-standard-1
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image: debian-7
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# Example using defaults and with metadata to create a single 'foo' instance
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- local_action:
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module: gce
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name: foo
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metadata: '{"db":"postgres", "group":"qa", "id":500}'
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# Launch instances from a control node, runs some tasks on the new instances,
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# and then terminate them
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# This example uses JSON credentials with the credentials_file parameter
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# rather than the deprecated pem_file option with PEM formatted credentials.
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- name: Create a sandbox instance
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hosts: localhost
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vars:
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names: foo,bar
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machine_type: n1-standard-1
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image: debian-6
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zone: us-central1-a
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service_account_email: unique-email@developer.gserviceaccount.com
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credentials_file: /path/to/json_file
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project_id: project-id
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tasks:
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- name: Launch instances
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local_action: gce instance_names={{names}} machine_type={{machine_type}}
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image={{image}} zone={{zone}}
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service_account_email={{ service_account_email }}
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credentials_file={{ credentials_file }}
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project_id={{ project_id }}
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register: gce
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- name: Wait for SSH to come up
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local_action: wait_for host={{item.public_ip}} port=22 delay=10
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timeout=60 state=started
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with_items: {{gce.instance_data}}
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- name: Configure instance(s)
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hosts: launched
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become: True
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roles:
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- my_awesome_role
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- my_awesome_tasks
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- name: Terminate instances
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hosts: localhost
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connection: local
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tasks:
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- name: Terminate instances that were previously launched
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local_action:
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module: gce
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state: 'absent'
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instance_names: {{gce.instance_names}}
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# The deprecated PEM file credentials can be used as follows
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- name: Create a sandbox instance with PEM credentials
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hosts: localhost
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vars:
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names: foo,bar
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machine_type: n1-standard-1
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image: debian-6
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zone: us-central1-a
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service_account_email: unique-email@developer.gserviceaccount.com
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pem_file: /path/to/pem_file
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project_id: project-id
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tasks:
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- name: Launch instances
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local_action: gce instance_names={{names}} machine_type={{machine_type}}
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image={{image}} zone={{zone}}
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service_account_email={{ service_account_email }}
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pem_file={{ pem_file }}
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project_id={{ project_id }}
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register: gce
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- name: Wait for SSH to come up
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local_action: wait_for host={{item.public_ip}} port=22 delay=10
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timeout=60 state=started
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with_items: {{gce.instance_data}}
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'''
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import socket
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try:
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import libcloud
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from libcloud.compute.types import Provider
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from libcloud.compute.providers import get_driver
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from libcloud.common.google import GoogleBaseError, QuotaExceededError, \
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ResourceExistsError, ResourceInUseError, ResourceNotFoundError
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from libcloud.compute.drivers.gce import GCEAddress
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_ = Provider.GCE
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HAS_LIBCLOUD = True
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except ImportError:
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HAS_LIBCLOUD = False
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try:
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from ast import literal_eval
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HAS_PYTHON26 = True
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except ImportError:
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HAS_PYTHON26 = False
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def get_instance_info(inst):
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"""Retrieves instance information from an instance object and returns it
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as a dictionary.
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"""
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metadata = {}
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if 'metadata' in inst.extra and 'items' in inst.extra['metadata']:
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for md in inst.extra['metadata']['items']:
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metadata[md['key']] = md['value']
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try:
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netname = inst.extra['networkInterfaces'][0]['network'].split('/')[-1]
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except:
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netname = None
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try:
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subnetname = inst.extra['networkInterfaces'][0]['subnetwork'].split('/')[-1]
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except:
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subnetname = None
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if 'disks' in inst.extra:
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disk_names = [disk_info['source'].split('/')[-1]
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for disk_info
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in sorted(inst.extra['disks'],
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key=lambda disk_info: disk_info['index'])]
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else:
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disk_names = []
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if len(inst.public_ips) == 0:
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public_ip = None
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else:
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public_ip = inst.public_ips[0]
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return({
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'image': inst.image is not None and inst.image.split('/')[-1] or None,
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'disks': disk_names,
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'machine_type': inst.size,
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'metadata': metadata,
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'name': inst.name,
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'network': netname,
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'subnetwork': subnetname,
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'private_ip': inst.private_ips[0],
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'public_ip': public_ip,
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'status': ('status' in inst.extra) and inst.extra['status'] or None,
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'tags': ('tags' in inst.extra) and inst.extra['tags'] or [],
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'zone': ('zone' in inst.extra) and inst.extra['zone'].name or None,
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})
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def create_instances(module, gce, instance_names):
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"""Creates new instances. Attributes other than instance_names are picked
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up from 'module'
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module : AnsibleModule object
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gce: authenticated GCE libcloud driver
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instance_names: python list of instance names to create
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Returns:
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A list of dictionaries with instance information
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about the instances that were launched.
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"""
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image = module.params.get('image')
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machine_type = module.params.get('machine_type')
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metadata = module.params.get('metadata')
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network = module.params.get('network')
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subnetwork = module.params.get('subnetwork')
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persistent_boot_disk = module.params.get('persistent_boot_disk')
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disks = module.params.get('disks')
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state = module.params.get('state')
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tags = module.params.get('tags')
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zone = module.params.get('zone')
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ip_forward = module.params.get('ip_forward')
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external_ip = module.params.get('external_ip')
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disk_auto_delete = module.params.get('disk_auto_delete')
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preemptible = module.params.get('preemptible')
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service_account_permissions = module.params.get('service_account_permissions')
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service_account_email = module.params.get('service_account_email')
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if external_ip == "none":
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instance_external_ip = None
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elif not isinstance(external_ip, basestring):
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try:
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if len(external_ip) != 0:
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instance_external_ip = external_ip.pop(0)
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# check if instance_external_ip is an ip or a name
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try:
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socket.inet_aton(instance_external_ip)
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instance_external_ip = GCEAddress(id='unknown', name='unknown', address=instance_external_ip, region='unknown', driver=gce)
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except socket.error:
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instance_external_ip = gce.ex_get_address(instance_external_ip)
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else:
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instance_external_ip = 'ephemeral'
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except GoogleBaseError as e:
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module.fail_json(msg='Unexpected error attempting to get a static ip %s, error: %s' % (external_ip, e.value))
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else:
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instance_external_ip = external_ip
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new_instances = []
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changed = False
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lc_disks = []
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disk_modes = []
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for i, disk in enumerate(disks or []):
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if isinstance(disk, dict):
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lc_disks.append(gce.ex_get_volume(disk['name']))
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disk_modes.append(disk['mode'])
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else:
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lc_disks.append(gce.ex_get_volume(disk))
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# boot disk is implicitly READ_WRITE
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disk_modes.append('READ_ONLY' if i > 0 else 'READ_WRITE')
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lc_network = gce.ex_get_network(network)
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lc_machine_type = gce.ex_get_size(machine_type)
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lc_zone = gce.ex_get_zone(zone)
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# Try to convert the user's metadata value into the format expected
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# by GCE. First try to ensure user has proper quoting of a
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# dictionary-like syntax using 'literal_eval', then convert the python
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# dict into a python list of 'key' / 'value' dicts. Should end up
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# with:
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# [ {'key': key1, 'value': value1}, {'key': key2, 'value': value2}, ...]
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if metadata:
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if isinstance(metadata, dict):
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md = metadata
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else:
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try:
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md = literal_eval(str(metadata))
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if not isinstance(md, dict):
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raise ValueError('metadata must be a dict')
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except ValueError as e:
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module.fail_json(msg='bad metadata: %s' % str(e))
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except SyntaxError as e:
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module.fail_json(msg='bad metadata syntax')
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if hasattr(libcloud, '__version__') and libcloud.__version__ < '0.15':
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items = []
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for k, v in md.items():
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items.append({"key": k, "value": v})
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metadata = {'items': items}
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else:
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metadata = md
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lc_image = LazyDiskImage(module, gce, image, lc_disks)
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ex_sa_perms = []
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bad_perms = []
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if service_account_permissions:
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for perm in service_account_permissions:
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if perm not in gce.SA_SCOPES_MAP.keys():
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bad_perms.append(perm)
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if len(bad_perms) > 0:
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module.fail_json(msg='bad permissions: %s' % str(bad_perms))
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ex_sa_perms.append({'email': "default"})
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ex_sa_perms[0]['scopes'] = service_account_permissions
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# These variables all have default values but check just in case
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if not lc_network or not lc_machine_type or not lc_zone:
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module.fail_json(msg='Missing required create instance variable',
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changed=False)
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for name in instance_names:
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pd = None
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if lc_disks:
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pd = lc_disks[0]
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elif persistent_boot_disk:
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try:
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pd = gce.ex_get_volume("%s" % name, lc_zone)
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except ResourceNotFoundError:
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pd = gce.create_volume(None, "%s" % name, image=lc_image())
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gce_args = dict(
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location=lc_zone,
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ex_network=network, ex_tags=tags, ex_metadata=metadata,
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ex_boot_disk=pd, ex_can_ip_forward=ip_forward,
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external_ip=instance_external_ip, ex_disk_auto_delete=disk_auto_delete,
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ex_service_accounts=ex_sa_perms
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)
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if preemptible is not None:
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gce_args['ex_preemptible'] = preemptible
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if subnetwork is not None:
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gce_args['ex_subnetwork'] = subnetwork
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inst = None
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try:
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inst = gce.ex_get_node(name, lc_zone)
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except ResourceNotFoundError:
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inst = gce.create_node(
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name, lc_machine_type, lc_image(), **gce_args
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)
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changed = True
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except GoogleBaseError as e:
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module.fail_json(msg='Unexpected error attempting to create ' +
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'instance %s, error: %s' % (name, e.value))
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for i, lc_disk in enumerate(lc_disks):
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# Check whether the disk is already attached
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if (len(inst.extra['disks']) > i):
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attached_disk = inst.extra['disks'][i]
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if attached_disk['source'] != lc_disk.extra['selfLink']:
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module.fail_json(
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msg=("Disk at index %d does not match: requested=%s found=%s" % (
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i, lc_disk.extra['selfLink'], attached_disk['source'])))
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elif attached_disk['mode'] != disk_modes[i]:
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module.fail_json(
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msg=("Disk at index %d is in the wrong mode: requested=%s found=%s" % (
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i, disk_modes[i], attached_disk['mode'])))
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else:
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continue
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gce.attach_volume(inst, lc_disk, ex_mode=disk_modes[i])
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# Work around libcloud bug: attached volumes don't get added
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# to the instance metadata. get_instance_info() only cares about
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# source and index.
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if len(inst.extra['disks']) != i+1:
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inst.extra['disks'].append(
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{'source': lc_disk.extra['selfLink'], 'index': i})
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if inst:
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new_instances.append(inst)
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instance_names = []
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instance_json_data = []
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for inst in new_instances:
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d = get_instance_info(inst)
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instance_names.append(d['name'])
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instance_json_data.append(d)
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return (changed, instance_json_data, instance_names)
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def change_instance_state(module, gce, instance_names, zone_name, state):
|
|
"""Changes the state of a list of instances. For example,
|
|
change from started to stopped, or started to absent.
|
|
|
|
module: Ansible module object
|
|
gce: authenticated GCE connection object
|
|
instance_names: a list of instance names to terminate
|
|
zone_name: the zone where the instances reside prior to termination
|
|
state: 'state' parameter passed into module as argument
|
|
|
|
Returns a dictionary of instance names that were changed.
|
|
|
|
"""
|
|
changed = False
|
|
changed_instance_names = []
|
|
for name in instance_names:
|
|
inst = None
|
|
try:
|
|
inst = gce.ex_get_node(name, zone_name)
|
|
except ResourceNotFoundError:
|
|
pass
|
|
except Exception as e:
|
|
module.fail_json(msg=unexpected_error_msg(e), changed=False)
|
|
if inst and state in ['absent', 'deleted']:
|
|
gce.destroy_node(inst)
|
|
changed_instance_names.append(inst.name)
|
|
changed = True
|
|
elif inst and state == 'started' and \
|
|
inst.state == libcloud.compute.types.NodeState.STOPPED:
|
|
gce.ex_start_node(inst)
|
|
changed_instance_names.append(inst.name)
|
|
changed = True
|
|
elif inst and state in ['stopped', 'terminated'] and \
|
|
inst.state == libcloud.compute.types.NodeState.RUNNING:
|
|
gce.ex_stop_node(inst)
|
|
changed_instance_names.append(inst.name)
|
|
changed = True
|
|
|
|
return (changed, changed_instance_names)
|
|
|
|
def main():
|
|
module = AnsibleModule(
|
|
argument_spec = dict(
|
|
image = dict(default='debian-7'),
|
|
instance_names = dict(),
|
|
machine_type = dict(default='n1-standard-1'),
|
|
metadata = dict(),
|
|
name = dict(),
|
|
network = dict(default='default'),
|
|
subnetwork = dict(),
|
|
persistent_boot_disk = dict(type='bool', default=False),
|
|
disks = dict(type='list'),
|
|
state = dict(choices=['active', 'present', 'absent', 'deleted',
|
|
'started', 'stopped', 'terminated'],
|
|
default='present'),
|
|
tags = dict(type='list'),
|
|
zone = dict(default='us-central1-a'),
|
|
service_account_email = dict(),
|
|
service_account_permissions = dict(type='list'),
|
|
pem_file = dict(),
|
|
credentials_file = dict(),
|
|
project_id = dict(),
|
|
ip_forward = dict(type='bool', default=False),
|
|
external_ip=dict(default='ephemeral'),
|
|
disk_auto_delete = dict(type='bool', default=True),
|
|
preemptible = dict(type='bool', default=None),
|
|
)
|
|
)
|
|
|
|
if not HAS_PYTHON26:
|
|
module.fail_json(msg="GCE module requires python's 'ast' module, python v2.6+")
|
|
if not HAS_LIBCLOUD:
|
|
module.fail_json(msg='libcloud with GCE support (0.17.0+) required for this module')
|
|
|
|
gce = gce_connect(module)
|
|
|
|
image = module.params.get('image')
|
|
instance_names = module.params.get('instance_names')
|
|
machine_type = module.params.get('machine_type')
|
|
metadata = module.params.get('metadata')
|
|
name = module.params.get('name')
|
|
network = module.params.get('network')
|
|
subnetwork = module.params.get('subnetwork')
|
|
persistent_boot_disk = module.params.get('persistent_boot_disk')
|
|
state = module.params.get('state')
|
|
tags = module.params.get('tags')
|
|
zone = module.params.get('zone')
|
|
ip_forward = module.params.get('ip_forward')
|
|
preemptible = module.params.get('preemptible')
|
|
changed = False
|
|
|
|
inames = []
|
|
if isinstance(instance_names, list):
|
|
inames = instance_names
|
|
elif isinstance(instance_names, str):
|
|
inames = instance_names.split(',')
|
|
if name:
|
|
inames.append(name)
|
|
if not inames:
|
|
module.fail_json(msg='Must specify a "name" or "instance_names"',
|
|
changed=False)
|
|
if not zone:
|
|
module.fail_json(msg='Must specify a "zone"', changed=False)
|
|
|
|
if preemptible is not None and hasattr(libcloud, '__version__') and libcloud.__version__ < '0.20':
|
|
module.fail_json(msg="Apache Libcloud 0.20.0+ is required to use 'preemptible' option",
|
|
changed=False)
|
|
|
|
if subnetwork is not None and not hasattr(gce, 'ex_get_subnetwork'):
|
|
module.fail_json(msg="Apache Libcloud 1.0.0+ is required to use 'subnetwork' option",
|
|
changed=False)
|
|
|
|
json_output = {'zone': zone}
|
|
if state in ['absent', 'deleted', 'started', 'stopped', 'terminated']:
|
|
json_output['state'] = state
|
|
(changed, changed_instance_names) = change_instance_state(
|
|
module, gce, inames, zone, state)
|
|
|
|
# based on what user specified, return the same variable, although
|
|
# value could be different if an instance could not be destroyed
|
|
if instance_names:
|
|
json_output['instance_names'] = changed_instance_names
|
|
elif name:
|
|
json_output['name'] = name
|
|
|
|
elif state in ['active', 'present']:
|
|
json_output['state'] = 'present'
|
|
(changed, instance_data, instance_name_list) = create_instances(
|
|
module, gce, inames)
|
|
json_output['instance_data'] = instance_data
|
|
if instance_names:
|
|
json_output['instance_names'] = instance_name_list
|
|
elif name:
|
|
json_output['name'] = name
|
|
|
|
json_output['changed'] = changed
|
|
module.exit_json(**json_output)
|
|
|
|
|
|
class LazyDiskImage:
|
|
"""
|
|
Object for lazy instantiation of disk image
|
|
gce.ex_get_image is a very expensive call, so we want to avoid calling it as much as possible.
|
|
"""
|
|
def __init__(self, module, gce, name, has_pd):
|
|
self.image = None
|
|
self.was_called = False
|
|
self.gce = gce
|
|
self.name = name
|
|
self.has_pd = has_pd
|
|
self.module = module
|
|
|
|
def __call__(self):
|
|
if not self.was_called:
|
|
self.was_called = True
|
|
if not self.has_pd:
|
|
self.image = self.gce.ex_get_image(self.name)
|
|
if not self.image:
|
|
self.module.fail_json(msg='image or disks missing for create instance', changed=False)
|
|
return self.image
|
|
|
|
|
|
# import module snippets
|
|
from ansible.module_utils.basic import *
|
|
from ansible.module_utils.gce import *
|
|
if __name__ == '__main__':
|
|
main()
|