mirror of https://github.com/ansible/ansible.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
312 lines
13 KiB
ReStructuredText
312 lines
13 KiB
ReStructuredText
**********************************
|
|
Packet.net Guide
|
|
**********************************
|
|
|
|
Introduction
|
|
============
|
|
|
|
`Packet.net <https://packet.net>`_ is a bare metal infrastructure host that's supported by Ansible (>=2.3) through a dynamic inventory script and two cloud modules. The two modules are:
|
|
|
|
- packet_sshkey: adds a public SSH key from file or value to the Packet infrastructure. Every subsequently-created device will have this public key installed in .ssh/authorized_keys.
|
|
- packet_device: manages servers on Packet. You can use this module to create, restart and delete devices.
|
|
|
|
Note, this guide assumes you are familiar with Ansible and how it works. If you're not, have a look at their :ref:`docs <ansible_documentation>` before getting started.
|
|
|
|
Requirements
|
|
============
|
|
|
|
The Packet modules and inventory script connect to the Packet API using the packet-python package. You can install it with pip:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ pip install packet-python
|
|
|
|
In order to check the state of devices created by Ansible on Packet, it's a good idea to install one of the `Packet CLI clients <https://www.packet.net/developers/integrations/>`_. Otherwise you can check them through the `Packet portal <https://app.packet.net/portal>`_.
|
|
|
|
To use the modules and inventory script you'll need a Packet API token. You can generate an API token through the Packet portal `here <https://app.packet.net/portal#/api-keys>`__. The simplest way to authenticate yourself is to set the Packet API token in an environment variable:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ export PACKET_API_TOKEN=Bfse9F24SFtfs423Gsd3ifGsd43sSdfs
|
|
|
|
If you're not comfortable exporting your API token, you can pass it as a parameter to the modules.
|
|
|
|
On Packet, devices and reserved IP addresses belong to `projects <https://www.packet.com/developers/api/#projects>`_. In order to use the packet_device module, you need to specify the UUID of the project in which you want to create or manage devices. You can find a project's UUID in the Packet portal `here <https://app.packet.net/portal#/projects/list/table/>`_ (it's just under the project table) or through one of the available `CLIs <https://www.packet.net/developers/integrations/>`_.
|
|
|
|
|
|
If you want to use a new SSH key pair in this tutorial, you can generate it to ``./id_rsa`` and ``./id_rsa.pub`` as:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ ssh-keygen -t rsa -f ./id_rsa
|
|
|
|
If you want to use an existing key pair, just copy the private and public key over to the playbook directory.
|
|
|
|
|
|
Device Creation
|
|
===============
|
|
|
|
The following code block is a simple playbook that creates one `Type 0 <https://www.packet.com/cloud/servers/t1-small/>`_ server (the 'plan' parameter). You have to supply 'plan' and 'operating_system'. 'location' defaults to 'ewr1' (Parsippany, NJ). You can find all the possible values for the parameters through a `CLI client <https://www.packet.net/developers/integrations/>`_.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# playbook_create.yml
|
|
|
|
- name: create ubuntu device
|
|
hosts: localhost
|
|
tasks:
|
|
|
|
- packet_sshkey:
|
|
key_file: ./id_rsa.pub
|
|
label: tutorial key
|
|
|
|
- packet_device:
|
|
project_id: <your_project_id>
|
|
hostnames: myserver
|
|
operating_system: ubuntu_16_04
|
|
plan: baremetal_0
|
|
facility: sjc1
|
|
|
|
After running ``ansible-playbook playbook_create.yml``, you should have a server provisioned on Packet. You can verify through a CLI or in the `Packet portal <https://app.packet.net/portal#/projects/list/table>`__.
|
|
|
|
If you get an error with the message "failed to set machine state present, error: Error 404: Not Found", please verify your project UUID.
|
|
|
|
|
|
Updating Devices
|
|
================
|
|
|
|
The two parameters used to uniquely identify Packet devices are: "device_ids" and "hostnames". Both parameters accept either a single string (later converted to a one-element list), or a list of strings.
|
|
|
|
The 'device_ids' and 'hostnames' parameters are mutually exclusive. The following values are all acceptable:
|
|
|
|
- device_ids: a27b7a83-fc93-435b-a128-47a5b04f2dcf
|
|
|
|
- hostnames: mydev1
|
|
|
|
- device_ids: [a27b7a83-fc93-435b-a128-47a5b04f2dcf, 4887130f-0ccd-49a0-99b0-323c1ceb527b]
|
|
|
|
- hostnames: [mydev1, mydev2]
|
|
|
|
In addition, hostnames can contain a special '%d' formatter along with a 'count' parameter that lets you easily expand hostnames that follow a simple name and number pattern; in other words, ``hostnames: "mydev%d", count: 2`` will expand to [mydev1, mydev2].
|
|
|
|
If your playbook acts on existing Packet devices, you can only pass the 'hostname' and 'device_ids' parameters. The following playbook shows how you can reboot a specific Packet device by setting the 'hostname' parameter:
|
|
|
|
.. code-block:: yaml
|
|
|
|
# playbook_reboot.yml
|
|
|
|
- name: reboot myserver
|
|
hosts: localhost
|
|
tasks:
|
|
|
|
- packet_device:
|
|
project_id: <your_project_id>
|
|
hostnames: myserver
|
|
state: rebooted
|
|
|
|
You can also identify specific Packet devices with the 'device_ids' parameter. The device's UUID can be found in the `Packet Portal <https://app.packet.net/portal>`_ or by using a `CLI <https://www.packet.net/developers/integrations/>`_. The following playbook removes a Packet device using the 'device_ids' field:
|
|
|
|
.. code-block:: yaml
|
|
|
|
# playbook_remove.yml
|
|
|
|
- name: remove a device
|
|
hosts: localhost
|
|
tasks:
|
|
|
|
- packet_device:
|
|
project_id: <your_project_id>
|
|
device_ids: <myserver_device_id>
|
|
state: absent
|
|
|
|
|
|
More Complex Playbooks
|
|
======================
|
|
|
|
In this example, we'll create a CoreOS cluster with `user data <https://packet.com/developers/docs/servers/key-features/user-data/>`_.
|
|
|
|
|
|
The CoreOS cluster will use `etcd <https://etcd.io/>`_ for discovery of other servers in the cluster. Before provisioning your servers, you'll need to generate a discovery token for your cluster:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ curl -w "\n" 'https://discovery.etcd.io/new?size=3'
|
|
|
|
The following playbook will create an SSH key, 3 Packet servers, and then wait until SSH is ready (or until 5 minutes passed). Make sure to substitute the discovery token URL in 'user_data', and the 'project_id' before running ``ansible-playbook``. Also, feel free to change 'plan' and 'facility'.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# playbook_coreos.yml
|
|
|
|
- name: Start 3 CoreOS nodes in Packet and wait until SSH is ready
|
|
hosts: localhost
|
|
tasks:
|
|
|
|
- packet_sshkey:
|
|
key_file: ./id_rsa.pub
|
|
label: new
|
|
|
|
- packet_device:
|
|
hostnames: [coreos-one, coreos-two, coreos-three]
|
|
operating_system: coreos_beta
|
|
plan: baremetal_0
|
|
facility: ewr1
|
|
project_id: <your_project_id>
|
|
wait_for_public_IPv: 4
|
|
user_data: |
|
|
#cloud-config
|
|
coreos:
|
|
etcd2:
|
|
discovery: https://discovery.etcd.io/<token>
|
|
advertise-client-urls: http://$private_ipv4:2379,http://$private_ipv4:4001
|
|
initial-advertise-peer-urls: http://$private_ipv4:2380
|
|
listen-client-urls: http://0.0.0.0:2379,http://0.0.0.0:4001
|
|
listen-peer-urls: http://$private_ipv4:2380
|
|
fleet:
|
|
public-ip: $private_ipv4
|
|
units:
|
|
- name: etcd2.service
|
|
command: start
|
|
- name: fleet.service
|
|
command: start
|
|
register: newhosts
|
|
|
|
- name: wait for ssh
|
|
wait_for:
|
|
delay: 1
|
|
host: "{{ item.public_ipv4 }}"
|
|
port: 22
|
|
state: started
|
|
timeout: 500
|
|
loop: "{{ newhosts.results[0].devices }}"
|
|
|
|
|
|
As with most Ansible modules, the default states of the Packet modules are idempotent, meaning the resources in your project will remain the same after re-runs of a playbook. Thus, we can keep the ``packet_sshkey`` module call in our playbook. If the public key is already in your Packet account, the call will have no effect.
|
|
|
|
The second module call provisions 3 Packet Type 0 (specified using the 'plan' parameter) servers in the project identified by the 'project_id' parameter. The servers are all provisioned with CoreOS beta (the 'operating_system' parameter) and are customized with cloud-config user data passed to the 'user_data' parameter.
|
|
|
|
The ``packet_device`` module has a ``wait_for_public_IPv`` that is used to specify the version of the IP address to wait for (valid values are ``4`` or ``6`` for IPv4 or IPv6). If specified, Ansible will wait until the GET API call for a device contains an Internet-routeable IP address of the specified version. When referring to an IP address of a created device in subsequent module calls, it's wise to use the ``wait_for_public_IPv`` parameter, or ``state: active`` in the packet_device module call.
|
|
|
|
Run the playbook:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ ansible-playbook playbook_coreos.yml
|
|
|
|
Once the playbook quits, your new devices should be reachable through SSH. Try to connect to one and check if etcd has started properly:
|
|
|
|
.. code-block:: bash
|
|
|
|
tomk@work $ ssh -i id_rsa core@$one_of_the_servers_ip
|
|
core@coreos-one ~ $ etcdctl cluster-health
|
|
|
|
Once you create a couple of devices, you might appreciate the dynamic inventory script...
|
|
|
|
|
|
Dynamic Inventory Script
|
|
========================
|
|
|
|
The dynamic inventory script queries the Packet API for a list of hosts, and exposes it to Ansible so you can easily identify and act on Packet devices.
|
|
|
|
You can find it in Ansible Community General Collection's git repo at `scripts/inventory/packet_net.py <https://raw.githubusercontent.com/ansible-community/contrib-scripts/main/inventory/packet_net.py>`_.
|
|
|
|
The inventory script is configurable through an `ini file <https://raw.githubusercontent.com/ansible-community/contrib-scripts/main/inventory/packet_net.ini>`_.
|
|
|
|
If you want to use the inventory script, you must first export your Packet API token to a PACKET_API_TOKEN environment variable.
|
|
|
|
You can either copy the inventory and ini config out from the cloned git repo, or you can download it to your working directory like so:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ wget https://raw.githubusercontent.com/ansible-community/contrib-scripts/main/inventory/packet_net.py
|
|
$ chmod +x packet_net.py
|
|
$ wget https://raw.githubusercontent.com/ansible-community/contrib-scripts/main/inventory/packet_net.ini
|
|
|
|
In order to understand what the inventory script gives to Ansible you can run:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ ./packet_net.py --list
|
|
|
|
It should print a JSON document looking similar to following trimmed dictionary:
|
|
|
|
.. code-block:: json
|
|
|
|
{
|
|
"_meta": {
|
|
"hostvars": {
|
|
"147.75.64.169": {
|
|
"packet_billing_cycle": "hourly",
|
|
"packet_created_at": "2017-02-09T17:11:26Z",
|
|
"packet_facility": "ewr1",
|
|
"packet_hostname": "coreos-two",
|
|
"packet_href": "/devices/d0ab8972-54a8-4bff-832b-28549d1bec96",
|
|
"packet_id": "d0ab8972-54a8-4bff-832b-28549d1bec96",
|
|
"packet_locked": false,
|
|
"packet_operating_system": "coreos_beta",
|
|
"packet_plan": "baremetal_0",
|
|
"packet_state": "active",
|
|
"packet_updated_at": "2017-02-09T17:16:35Z",
|
|
"packet_user": "core",
|
|
"packet_userdata": "#cloud-config\ncoreos:\n etcd2:\n discovery: https://discovery.etcd.io/e0c8a4a9b8fe61acd51ec599e2a4f68e\n advertise-client-urls: http://$private_ipv4:2379,http://$private_ipv4:4001\n initial-advertise-peer-urls: http://$private_ipv4:2380\n listen-client-urls: http://0.0.0.0:2379,http://0.0.0.0:4001\n listen-peer-urls: http://$private_ipv4:2380\n fleet:\n public-ip: $private_ipv4\n units:\n - name: etcd2.service\n command: start\n - name: fleet.service\n command: start"
|
|
}
|
|
}
|
|
},
|
|
"baremetal_0": [
|
|
"147.75.202.255",
|
|
"147.75.202.251",
|
|
"147.75.202.249",
|
|
"147.75.64.129",
|
|
"147.75.192.51",
|
|
"147.75.64.169"
|
|
],
|
|
"coreos_beta": [
|
|
"147.75.202.255",
|
|
"147.75.202.251",
|
|
"147.75.202.249",
|
|
"147.75.64.129",
|
|
"147.75.192.51",
|
|
"147.75.64.169"
|
|
],
|
|
"ewr1": [
|
|
"147.75.64.129",
|
|
"147.75.192.51",
|
|
"147.75.64.169"
|
|
],
|
|
"sjc1": [
|
|
"147.75.202.255",
|
|
"147.75.202.251",
|
|
"147.75.202.249"
|
|
],
|
|
"coreos-two": [
|
|
"147.75.64.169"
|
|
],
|
|
"d0ab8972-54a8-4bff-832b-28549d1bec96": [
|
|
"147.75.64.169"
|
|
]
|
|
}
|
|
|
|
In the ``['_meta']['hostvars']`` key, there is a list of devices (uniquely identified by their public IPv4 address) with their parameters. The other keys under ``['_meta']`` are lists of devices grouped by some parameter. Here, it is type (all devices are of type baremetal_0), operating system, and facility (ewr1 and sjc1).
|
|
|
|
In addition to the parameter groups, there are also one-item groups with the UUID or hostname of the device.
|
|
|
|
You can now target groups in playbooks! The following playbook will install a role that supplies resources for an Ansible target into all devices in the "coreos_beta" group:
|
|
|
|
.. code-block:: yaml
|
|
|
|
# playbook_bootstrap.yml
|
|
|
|
- hosts: coreos_beta
|
|
gather_facts: false
|
|
roles:
|
|
- defunctzombie.coreos-boostrap
|
|
|
|
Don't forget to supply the dynamic inventory in the ``-i`` argument!
|
|
|
|
.. code-block:: bash
|
|
|
|
$ ansible-playbook -u core -i packet_net.py playbook_bootstrap.yml
|
|
|
|
|
|
If you have any questions or comments let us know! help@packet.net
|