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ansible/docs/docsite/rst/scenario_guides/guide_aci.rst
Toshio Kuratomi 80e7e1a17c
Due to the takeover of freenode we're moving to a different irc network. (#74775) 
* Due to the takeover of freenode we're moving to a different irc network.

* Our channels updated to point at the same channel name on libera.chat
* Some links went to webchat.freenode.net.  At this time, libera.chat
  doesn't point you to an official webchat client so I changed these to
  https://libera.chat. (kiwi irc does work with libera.chat so that
  could be another option).
* In general, I used the name irc.libera.net for link names and
  https://libera.chat for link targets.  This is because the irc service
  is hosted on irc.libera.chat but the project web server is hosted on
  libera.chat.  (This appears to also be true for freenode but we were
  using http://irc.freenode.net which doesn't seem to work.  Oops).
* Removed http://irc.freenode.net from the linkcheck exceptions.
  linkcheck was actually correct to flag that as invalid (should have
  been http://frenode.net instead).

* Looks like hte important people in #yaml are now in libera.chat

* Link to where contributors should get help

Add a link target and then link to where contributors should get support
for developing groups of modules.

* Update docs/docsite/rst/dev_guide/developing_modules_in_groups.rst

Co-authored-by: Felix Fontein <felix@fontein.de>

Co-authored-by: John R Barker <john@johnrbarker.com>
Co-authored-by: Felix Fontein <felix@fontein.de>
2021-06-01 08:48:09 +01:00

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.. _aci_guide:
Cisco ACI Guide
===============
.. _aci_guide_intro:
What is Cisco ACI ?
-------------------
Application Centric Infrastructure (ACI)
........................................
The Cisco Application Centric Infrastructure (ACI) allows application requirements to define the network. This architecture simplifies, optimizes, and accelerates the entire application deployment life cycle.
Application Policy Infrastructure Controller (APIC)
...................................................
The APIC manages the scalable ACI multi-tenant fabric. The APIC provides a unified point of automation and management, policy programming, application deployment, and health monitoring for the fabric. The APIC, which is implemented as a replicated synchronized clustered controller, optimizes performance, supports any application anywhere, and provides unified operation of the physical and virtual infrastructure.
The APIC enables network administrators to easily define the optimal network for applications. Data center operators can clearly see how applications consume network resources, easily isolate and troubleshoot application and infrastructure problems, and monitor and profile resource usage patterns.
The Cisco Application Policy Infrastructure Controller (APIC) API enables applications to directly connect with a secure, shared, high-performance resource pool that includes network, compute, and storage capabilities.
ACI Fabric
..........
The Cisco Application Centric Infrastructure (ACI) Fabric includes Cisco Nexus 9000 Series switches with the APIC to run in the leaf/spine ACI fabric mode. These switches form a "fat-tree" network by connecting each leaf node to each spine node; all other devices connect to the leaf nodes. The APIC manages the ACI fabric.
The ACI fabric provides consistent low-latency forwarding across high-bandwidth links (40 Gbps, with a 100-Gbps future capability). Traffic with the source and destination on the same leaf switch is handled locally, and all other traffic travels from the ingress leaf to the egress leaf through a spine switch. Although this architecture appears as two hops from a physical perspective, it is actually a single Layer 3 hop because the fabric operates as a single Layer 3 switch.
The ACI fabric object-oriented operating system (OS) runs on each Cisco Nexus 9000 Series node. It enables programming of objects for each configurable element of the system. The ACI fabric OS renders policies from the APIC into a concrete model that runs in the physical infrastructure. The concrete model is analogous to compiled software; it is the form of the model that the switch operating system can execute.
All the switch nodes contain a complete copy of the concrete model. When an administrator creates a policy in the APIC that represents a configuration, the APIC updates the logical model. The APIC then performs the intermediate step of creating a fully elaborated policy that it pushes into all the switch nodes where the concrete model is updated.
The APIC is responsible for fabric activation, switch firmware management, network policy configuration, and instantiation. While the APIC acts as the centralized policy and network management engine for the fabric, it is completely removed from the data path, including the forwarding topology. Therefore, the fabric can still forward traffic even when communication with the APIC is lost.
More information
................
Various resources exist to start learning ACI, here is a list of interesting articles from the community.
- `Adam Raffe: Learning ACI <https://adamraffe.com/learning-aci/>`_
- `Luca Relandini: ACI for dummies <https://lucarelandini.blogspot.be/2015/03/aci-for-dummies.html>`_
- `Cisco DevNet Learning Labs about ACI <https://learninglabs.cisco.com/labs/tags/ACI>`_
.. _aci_guide_modules:
Using the ACI modules
---------------------
The Ansible ACI modules provide a user-friendly interface to managing your ACI environment using Ansible playbooks.
For instance ensuring that a specific tenant exists, is done using the following Ansible task using the aci_tenant module:
.. code-block:: yaml
- name: Ensure tenant customer-xyz exists
aci_tenant:
host: my-apic-1
username: admin
password: my-password
tenant: customer-xyz
description: Customer XYZ
state: present
A complete list of existing ACI modules is available on the content tab of the `ACI collection on Ansible Galaxy <https://galaxy.ansible.com/cisco/aci>`_.
If you want to learn how to write your own ACI modules to contribute, look at the :ref:`Developing Cisco ACI modules <aci_dev_guide>` section.
Querying ACI configuration
..........................
A module can also be used to query a specific object.
.. code-block:: yaml
- name: Query tenant customer-xyz
aci_tenant:
host: my-apic-1
username: admin
password: my-password
tenant: customer-xyz
state: query
register: my_tenant
Or query all objects.
.. code-block:: yaml
- name: Query all tenants
aci_tenant:
host: my-apic-1
username: admin
password: my-password
state: query
register: all_tenants
After registering the return values of the aci_tenant task as shown above, you can access all tenant information from variable ``all_tenants``.
Running on the controller locally
.................................
As originally designed, Ansible modules are shipped to and run on the remote target(s), however the ACI modules (like most network-related modules) do not run on the network devices or controller (in this case the APIC), but they talk directly to the APIC's REST interface.
For this very reason, the modules need to run on the local Ansible controller (or are delegated to another system that *can* connect to the APIC).
Gathering facts
```````````````
Because we run the modules on the Ansible controller gathering facts will not work. That is why when using these ACI modules it is mandatory to disable facts gathering. You can do this globally in your ``ansible.cfg`` or by adding ``gather_facts: no`` to every play.
.. code-block:: yaml
:emphasize-lines: 3
- name: Another play in my playbook
hosts: my-apic-1
gather_facts: no
tasks:
- name: Create a tenant
aci_tenant:
...
Delegating to localhost
```````````````````````
So let us assume we have our target configured in the inventory using the FQDN name as the ``ansible_host`` value, as shown below.
.. code-block:: yaml
:emphasize-lines: 3
apics:
my-apic-1:
ansible_host: apic01.fqdn.intra
ansible_user: admin
ansible_password: my-password
One way to set this up is to add to every task the directive: ``delegate_to: localhost``.
.. code-block:: yaml
:emphasize-lines: 8
- name: Query all tenants
aci_tenant:
host: '{{ ansible_host }}'
username: '{{ ansible_user }}'
password: '{{ ansible_password }}'
state: query
delegate_to: localhost
register: all_tenants
If one would forget to add this directive, Ansible will attempt to connect to the APIC using SSH and attempt to copy the module and run it remotely. This will fail with a clear error, yet may be confusing to some.
Using the local connection method
`````````````````````````````````
Another option frequently used, is to tie the ``local`` connection method to this target so that every subsequent task for this target will use the local connection method (hence run it locally, rather than use SSH).
In this case the inventory may look like this:
.. code-block:: yaml
:emphasize-lines: 6
apics:
my-apic-1:
ansible_host: apic01.fqdn.intra
ansible_user: admin
ansible_password: my-password
ansible_connection: local
But used tasks do not need anything special added.
.. code-block:: yaml
- name: Query all tenants
aci_tenant:
host: '{{ ansible_host }}'
username: '{{ ansible_user }}'
password: '{{ ansible_password }}'
state: query
register: all_tenants
.. hint:: For clarity we have added ``delegate_to: localhost`` to all the examples in the module documentation. This helps to ensure first-time users can easily copy&paste parts and make them work with a minimum of effort.
Common parameters
.................
Every Ansible ACI module accepts the following parameters that influence the module's communication with the APIC REST API:
host
Hostname or IP address of the APIC.
port
Port to use for communication. (Defaults to ``443`` for HTTPS, and ``80`` for HTTP)
username
User name used to log on to the APIC. (Defaults to ``admin``)
password
Password for ``username`` to log on to the APIC, using password-based authentication.
private_key
Private key for ``username`` to log on to APIC, using signature-based authentication.
This could either be the raw private key content (include header/footer) or a file that stores the key content.
*New in version 2.5*
certificate_name
Name of the certificate in the ACI Web GUI.
This defaults to either the ``username`` value or the ``private_key`` file base name).
*New in version 2.5*
timeout
Timeout value for socket-level communication.
use_proxy
Use system proxy settings. (Defaults to ``yes``)
use_ssl
Use HTTPS or HTTP for APIC REST communication. (Defaults to ``yes``)
validate_certs
Validate certificate when using HTTPS communication. (Defaults to ``yes``)
output_level
Influence the level of detail ACI modules return to the user. (One of ``normal``, ``info`` or ``debug``) *New in version 2.5*
Proxy support
.............
By default, if an environment variable ``<protocol>_proxy`` is set on the target host, requests will be sent through that proxy. This behaviour can be overridden by setting a variable for this task (see :ref:`playbooks_environment`), or by using the ``use_proxy`` module parameter.
HTTP redirects can redirect from HTTP to HTTPS so ensure that the proxy environment for both protocols is correctly configured.
If proxy support is not needed, but the system may have it configured nevertheless, use the parameter ``use_proxy: no`` to avoid accidental system proxy usage.
.. hint:: Selective proxy support using the ``no_proxy`` environment variable is also supported.
Return values
.............
.. versionadded:: 2.5
The following values are always returned:
current
The resulting state of the managed object, or results of your query.
The following values are returned when ``output_level: info``:
previous
The original state of the managed object (before any change was made).
proposed
The proposed config payload, based on user-supplied values.
sent
The sent config payload, based on user-supplied values and the existing configuration.
The following values are returned when ``output_level: debug`` or ``ANSIBLE_DEBUG=1``:
filter_string
The filter used for specific APIC queries.
method
The HTTP method used for the sent payload. (Either ``GET`` for queries, ``DELETE`` or ``POST`` for changes)
response
The HTTP response from the APIC.
status
The HTTP status code for the request.
url
The url used for the request.
.. note:: The module return values are documented in detail as part of each module's documentation.
More information
................
Various resources exist to start learn more about ACI programmability, we recommend the following links:
- :ref:`Developing Cisco ACI modules <aci_dev_guide>`
- `Jacob McGill: Automating Cisco ACI with Ansible <https://blogs.cisco.com/developer/automating-cisco-aci-with-ansible-eliminates-repetitive-day-to-day-tasks>`_
- `Cisco DevNet Learning Labs about ACI and Ansible <https://learninglabs.cisco.com/labs/tags/ACI,Ansible>`_
.. _aci_guide_auth:
ACI authentication
------------------
Password-based authentication
.............................
If you want to log on using a username and password, you can use the following parameters with your ACI modules:
.. code-block:: yaml
username: admin
password: my-password
Password-based authentication is very simple to work with, but it is not the most efficient form of authentication from ACI's point-of-view as it requires a separate login-request and an open session to work. To avoid having your session time-out and requiring another login, you can use the more efficient Signature-based authentication.
.. note:: Password-based authentication also may trigger anti-DoS measures in ACI v3.1+ that causes session throttling and results in HTTP 503 errors and login failures.
.. warning:: Never store passwords in plain text.
The "Vault" feature of Ansible allows you to keep sensitive data such as passwords or keys in encrypted files, rather than as plain text in your playbooks or roles. These vault files can then be distributed or placed in source control. See :ref:`playbooks_vault` for more information.
Signature-based authentication using certificates
.................................................
.. versionadded:: 2.5
Using signature-based authentication is more efficient and more reliable than password-based authentication.
Generate certificate and private key
````````````````````````````````````
Signature-based authentication requires a (self-signed) X.509 certificate with private key, and a configuration step for your AAA user in ACI. To generate a working X.509 certificate and private key, use the following procedure:
.. code-block:: bash
$ openssl req -new -newkey rsa:1024 -days 36500 -nodes -x509 -keyout admin.key -out admin.crt -subj '/CN=Admin/O=Your Company/C=US'
Configure your local user
`````````````````````````
Perform the following steps:
- Add the X.509 certificate to your ACI AAA local user at :guilabel:`ADMIN` » :guilabel:`AAA`
- Click :guilabel:`AAA Authentication`
- Check that in the :guilabel:`Authentication` field the :guilabel:`Realm` field displays :guilabel:`Local`
- Expand :guilabel:`Security Management` » :guilabel:`Local Users`
- Click the name of the user you want to add a certificate to, in the :guilabel:`User Certificates` area
- Click the :guilabel:`+` sign and in the :guilabel:`Create X509 Certificate` enter a certificate name in the :guilabel:`Name` field
* If you use the basename of your private key here, you don't need to enter ``certificate_name`` in Ansible
- Copy and paste your X.509 certificate in the :guilabel:`Data` field.
You can automate this by using the following Ansible task:
.. code-block:: yaml
- name: Ensure we have a certificate installed
aci_aaa_user_certificate:
host: my-apic-1
username: admin
password: my-password
aaa_user: admin
certificate_name: admin
certificate: "{{ lookup('file', 'pki/admin.crt') }}" # This will read the certificate data from a local file
.. note:: Signature-based authentication only works with local users.
Use signature-based authentication with Ansible
```````````````````````````````````````````````
You need the following parameters with your ACI module(s) for it to work:
.. code-block:: yaml
:emphasize-lines: 2,3
username: admin
private_key: pki/admin.key
certificate_name: admin # This could be left out !
or you can use the private key content:
.. code-block:: yaml
:emphasize-lines: 2,3
username: admin
private_key: |
-----BEGIN PRIVATE KEY-----
<<your private key content>>
-----END PRIVATE KEY-----
certificate_name: admin # This could be left out !
.. hint:: If you use a certificate name in ACI that matches the private key's basename, you can leave out the ``certificate_name`` parameter like the example above.
Using Ansible Vault to encrypt the private key
``````````````````````````````````````````````
.. versionadded:: 2.8
To start, encrypt the private key and give it a strong password.
.. code-block:: bash
ansible-vault encrypt admin.key
Use a text editor to open the private-key. You should have an encrypted cert now.
.. code-block:: bash
$ANSIBLE_VAULT;1.1;AES256
56484318584354658465121889743213151843149454864654151618131547984132165489484654
45641818198456456489479874513215489484843614848456466655432455488484654848489498
....
Copy and paste the new encrypted cert into your playbook as a new variable.
.. code-block:: yaml
private_key: !vault |
$ANSIBLE_VAULT;1.1;AES256
56484318584354658465121889743213151843149454864654151618131547984132165489484654
45641818198456456489479874513215489484843614848456466655432455488484654848489498
....
Use the new variable for the private_key:
.. code-block:: yaml
username: admin
private_key: "{{ private_key }}"
certificate_name: admin # This could be left out !
When running the playbook, use "--ask-vault-pass" to decrypt the private key.
.. code-block:: bash
ansible-playbook site.yaml --ask-vault-pass
More information
````````````````
- Detailed information about Signature-based Authentication is available from `Cisco APIC Signature-Based Transactions <https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/kb/b_KB_Signature_Based_Transactions.html>`_.
- More information on Ansible Vault can be found on the :ref:`Ansible Vault <vault>` page.
.. _aci_guide_rest:
Using ACI REST with Ansible
---------------------------
While already a lot of ACI modules exists in the Ansible distribution, and the most common actions can be performed with these existing modules, there's always something that may not be possible with off-the-shelf modules.
The aci_rest module provides you with direct access to the APIC REST API and enables you to perform any task not already covered by the existing modules. This may seem like a complex undertaking, but you can generate the needed REST payload for any action performed in the ACI web interface effortlessly.
Built-in idempotency
....................
Because the APIC REST API is intrinsically idempotent and can report whether a change was made, the aci_rest module automatically inherits both capabilities and is a first-class solution for automating your ACI infrastructure. As a result, users that require more powerful low-level access to their ACI infrastructure don't have to give up on idempotency and don't have to guess whether a change was performed when using the aci_rest module.
Using the aci_rest module
.........................
The aci_rest module accepts the native XML and JSON payloads, but additionally accepts inline YAML payload (structured like JSON). The XML payload requires you to use a path ending with ``.xml`` whereas JSON or YAML require the path to end with ``.json``.
When you're making modifications, you can use the POST or DELETE methods, whereas doing just queries require the GET method.
For instance, if you would like to ensure a specific tenant exists on ACI, these below four examples are functionally identical:
**XML** (Native ACI REST)
.. code-block:: yaml
- aci_rest:
host: my-apic-1
private_key: pki/admin.key
method: post
path: /api/mo/uni.xml
content: |
<fvTenant name="customer-xyz" descr="Customer XYZ"/>
**JSON** (Native ACI REST)
.. code-block:: yaml
- aci_rest:
host: my-apic-1
private_key: pki/admin.key
method: post
path: /api/mo/uni.json
content:
{
"fvTenant": {
"attributes": {
"name": "customer-xyz",
"descr": "Customer XYZ"
}
}
}
**YAML** (Ansible-style REST)
.. code-block:: yaml
- aci_rest:
host: my-apic-1
private_key: pki/admin.key
method: post
path: /api/mo/uni.json
content:
fvTenant:
attributes:
name: customer-xyz
descr: Customer XYZ
**Ansible task** (Dedicated module)
.. code-block:: yaml
- aci_tenant:
host: my-apic-1
private_key: pki/admin.key
tenant: customer-xyz
description: Customer XYZ
state: present
.. hint:: The XML format is more practical when there is a need to template the REST payload (inline), but the YAML format is more convenient for maintaining your infrastructure-as-code and feels more naturally integrated with Ansible playbooks. The dedicated modules offer a more simple, abstracted, but also a more limited experience. Use what feels best for your use-case.
More information
................
Plenty of resources exist to learn about ACI's APIC REST interface, we recommend the links below:
- `The ACI collection on Ansible Galaxy <https://galaxy.ansible.com/cisco/aci>`_
- `APIC REST API Configuration Guide <https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/2-x/rest_cfg/2_1_x/b_Cisco_APIC_REST_API_Configuration_Guide.html>`_ -- Detailed guide on how the APIC REST API is designed and used, incl. many examples
- `APIC Management Information Model reference <https://developer.cisco.com/docs/apic-mim-ref/>`_ -- Complete reference of the APIC object model
- `Cisco DevNet Learning Labs about ACI and REST <https://learninglabs.cisco.com/labs/tags/ACI,REST>`_
.. _aci_guide_ops:
Operational examples
--------------------
Here is a small overview of useful operational tasks to reuse in your playbooks.
Feel free to contribute more useful snippets.
Waiting for all controllers to be ready
.......................................
You can use the below task after you started to build your APICs and configured the cluster to wait until all the APICs have come online. It will wait until the number of controllers equals the number listed in the ``apic`` inventory group.
.. code-block:: yaml
- name: Waiting for all controllers to be ready
aci_rest:
host: my-apic-1
private_key: pki/admin.key
method: get
path: /api/node/class/topSystem.json?query-target-filter=eq(topSystem.role,"controller")
register: topsystem
until: topsystem|success and topsystem.totalCount|int >= groups['apic']|count >= 3
retries: 20
delay: 30
Waiting for cluster to be fully-fit
...................................
The below example waits until the cluster is fully-fit. In this example you know the number of APICs in the cluster and you verify each APIC reports a 'fully-fit' status.
.. code-block:: yaml
- name: Waiting for cluster to be fully-fit
aci_rest:
host: my-apic-1
private_key: pki/admin.key
method: get
path: /api/node/class/infraWiNode.json?query-target-filter=wcard(infraWiNode.dn,"topology/pod-1/node-1/av")
register: infrawinode
until: >
infrawinode|success and
infrawinode.totalCount|int >= groups['apic']|count >= 3 and
infrawinode.imdata[0].infraWiNode.attributes.health == 'fully-fit' and
infrawinode.imdata[1].infraWiNode.attributes.health == 'fully-fit' and
infrawinode.imdata[2].infraWiNode.attributes.health == 'fully-fit'
retries: 30
delay: 30
.. _aci_guide_errors:
APIC error messages
-------------------
The following error messages may occur and this section can help you understand what exactly is going on and how to fix/avoid them.
APIC Error 122: unknown managed object class 'polUni'
In case you receive this error while you are certain your aci_rest payload and object classes are seemingly correct, the issue might be that your payload is not in fact correct JSON (for example, the sent payload is using single quotes, rather than double quotes), and as a result the APIC is not correctly parsing your object classes from the payload. One way to avoid this is by using a YAML or an XML formatted payload, which are easier to construct correctly and modify later.
APIC Error 400: invalid data at line '1'. Attributes are missing, tag 'attributes' must be specified first, before any other tag
Although the JSON specification allows unordered elements, the APIC REST API requires that the JSON ``attributes`` element precede the ``children`` array or other elements. So you need to ensure that your payload conforms to this requirement. Sorting your dictionary keys will do the trick just fine. If you don't have any attributes, it may be necessary to add: ``attributes: {}`` as the APIC does expect the entry to precede any ``children``.
APIC Error 801: property descr of uni/tn-TENANT/ap-AP failed validation for value 'A "legacy" network'
Some values in the APIC have strict format-rules to comply to, and the internal APIC validation check for the provided value failed. In the above case, the ``description`` parameter (internally known as ``descr``) only accepts values conforming to `Regex: [a-zA-Z0-9\\!#$%()*,-./:;@ _{|}~?&+]+ <https://pubhub-prod.s3.amazonaws.com/media/apic-mim-ref/docs/MO-fvAp.html#descr>`_, in general it must not include quotes or square brackets.
.. _aci_guide_known_issues:
Known issues
------------
The aci_rest module is a wrapper around the APIC REST API. As a result any issues related to the APIC will be reflected in the use of this module.
All below issues either have been reported to the vendor, and most can simply be avoided.
Too many consecutive API calls may result in connection throttling
Starting with ACI v3.1 the APIC will actively throttle password-based authenticated connection rates over a specific threshold. This is as part of an anti-DDOS measure but can act up when using Ansible with ACI using password-based authentication. Currently, one solution is to increase this threshold within the nginx configuration, but using signature-based authentication is recommended.
**NOTE:** It is advisable to use signature-based authentication with ACI as it not only prevents connection-throttling, but also improves general performance when using the ACI modules.
Specific requests may not reflect changes correctly (`#35401 <https://github.com/ansible/ansible/issues/35041>`_)
There is a known issue where specific requests to the APIC do not properly reflect changed in the resulting output, even when we request those changes explicitly from the APIC. In one instance using the path ``api/node/mo/uni/infra.xml`` fails, where ``api/node/mo/uni/infra/.xml`` does work correctly.
**NOTE:** A workaround is to register the task return values (for example, ``register: this``) and influence when the task should report a change by adding: ``changed_when: this.imdata != []``.
Specific requests are known to not be idempotent (`#35050 <https://github.com/ansible/ansible/issues/35050>`_)
The behaviour of the APIC is inconsistent to the use of ``status="created"`` and ``status="deleted"``. The result is that when you use ``status="created"`` in your payload the resulting tasks are not idempotent and creation will fail when the object was already created. However this is not the case with ``status="deleted"`` where such call to an non-existing object does not cause any failure whatsoever.
**NOTE:** A workaround is to avoid using ``status="created"`` and instead use ``status="modified"`` when idempotency is essential to your workflow..
Setting user password is not idempotent (`#35544 <https://github.com/ansible/ansible/issues/35544>`_)
Due to an inconsistency in the APIC REST API, a task that sets the password of a locally-authenticated user is not idempotent. The APIC will complain with message ``Password history check: user dag should not use previous 5 passwords``.
**NOTE:** There is no workaround for this issue.
.. _aci_guide_community:
ACI Ansible community
---------------------
If you have specific issues with the ACI modules, or a feature request, or you like to contribute to the ACI project by proposing changes or documentation updates, look at the Ansible Community wiki ACI page at: https://github.com/ansible/community/wiki/Network:-ACI
You will find our roadmap, an overview of open ACI issues and pull-requests, and more information about who we are. If you have an interest in using ACI with Ansible, feel free to join! We occasionally meet online to track progress and prepare for new Ansible releases.
.. seealso::
`ACI collection on Ansible Galaxy <https://galaxy.ansible.com/cisco/aci>`_
View the content tab for a complete list of supported ACI modules.
:ref:`Developing Cisco ACI modules <aci_dev_guide>`
A walkthrough on how to develop new Cisco ACI modules to contribute back.
`ACI community <https://github.com/ansible/community/wiki/Network:-ACI>`_
The Ansible ACI community wiki page, includes roadmap, ideas and development documentation.
:ref:`network_guide`
A detailed guide on how to use Ansible for automating network infrastructure.
`Network Working Group <https://github.com/ansible/community/tree/master/group-network>`_
The Ansible Network community page, includes contact information and meeting information.
``#ansible-network`` on `irc.libera.chat <https://libera.chat/>`_
The #ansible-network IRC chat channel on libera.chat.
`User Mailing List <https://groups.google.com/group/ansible-project>`_
Have a question? Stop by the google group!
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