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cfn-environment-base-0.9.19
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Base environment for Troposphere based CFN project environments
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | cfn-environment-base-0.9.19 |
| نام | cfn-environment-base |
| نسخه کتابخانه | 0.9.19 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Patrick McClory, Patrick Pierson |
| ایمیل نویسنده | patrick@dualspark.com, patrick.pierson@ionchannel.io |
| آدرس صفحه اصلی | https://github.com/AWSFrederick/cloudformation-environmentbase |
| آدرس اینترنتی | https://pypi.org/project/cfn-environment-base/ |
| مجوز | ISC |
Cloudformation Environment Generator
------------------------------------
|Build Status|
.. |Build Status| image:: https://travis-ci.org/AWSFrederick/cloudformation-environmentbase.svg?branch=master
:target: https://travis-ci.org/AWSFrederick/cloudformation-environmentbase
|Gitter Chat|
.. |Gitter Chat| image:: https://badges.gitter.im/gitterHQ/gitter.png
:target: https://gitter.im/cloudformation-environmentbase/Lobby
What is Environmentbase?
------------------------
Environmentbase extends
`troposphere <https://github.com/cloudtools/troposphere>`__, a library
of wrapper objects for programmatically generating Cloudformation
templates. Environmentbase embraces this model of automation development
and extends it in several ways:
- provides a configurable base layer of networking resources enabling
you to focus on services instead of networking
- provides a small but growing library of functional infrastructure
patterns encapsulating industry best practices.
- provides an extension mechanism to develop your own configurable,
reusable 'patterns' using child-templates.
Moreover the Environmentbase platform allows for a service oriented
development model, whereby small teams can build, test and deploy
independent infrastructure automation templates, each focused on a
specific service or function. These templates can be imported and
associated to a 'top-level' (integration) template to centrally deploy
and manage the full environment. The same template can be deployed in
any region or AWS account to produce identical environments.
| Out of the box, this will create a VPC that should deploy cleanly into
any region
| across the publicly available AWS regions. The VPC network, by
default, will
| include:
- A public (/24) and a private subnet (/22) in three different
Availability Zones
- A highly available NAT instance per AZ
- An S3 bucket configured to allow Amazon ELB (within the same region)
and AWS
CloudTrail to aggregate logs
| There are a number of configuration options documented within the
script itself
| using `docopt <http://docopt.org>`__. An overview of the general
capabilities and
| features is as follows:
- This script queries the AWS VPC API to ensure that the AZ's selected
for
deployment will allow subnets to be deployed to them (sometimes an
issue in
older accounts)
- Modify the base network CIDR block and subnet size and count via
parameters
- Set prefixes for S3 key names for ELB and CloudTrail logging paths
within the
created bucket
| Used from the command line, this will generate the network alone, but
when used
| as a Python module, it's a powerful building block to help generate
the basic
| structures for more complex environments in CloudFormation very
easily.
Python Usage
------------
| The Python class EnvironmentBase is designed to be useful from command
line
| tools, but has further utility as a base class for more complicated
| environments. The original aim of this script was to build a reusable
artifact
| that could serve as the common networking design for multi-AZ,
multi-subnet
| demo environments. As such, the environmentbase.py script contains a
number of
| methods that are meant to be used by sub-classes and provide
abstractions for
| common workflows and use cases. To use this class, simply add it as a
dependency
| in your requirements.txt or setup.py. The following is an example
showing how to
| import core envbase components and patterns, including the bastion
host pattern:
.. code:: python
from environmentbase.networkbase import NetworkBase
from environmentbase.patterns.bastion import Bastion
class MyEnvClass(NetworkBase):
'''
Class creates a VPC, common network components for the environment and a bastion host
'''
def create_hook(self):
# Do custom troposphere resource creation here
self.add_child_template(Bastion())
def deploy_hook(self):
# Do custom deploy steps here
if __name__ == '__main__':
MyEnvClass()
Overriding these two functions allows you to hook into the template
generation and stack creation processes of environmentbase to inject the
resources and deployment steps for your environment. This create\_hook()
will add a bastion host as a child stack of the environment. See the
`Development <DEVELOPMENT.md>`__ documentation for more detailed
examples.
See `here <src/examples/>`__ for more examples of using patterns.
| Documentation within the class takes a modified usage of the
| `doxygen <http://www.stack.nl/~dimitri/doxygen/manual/docblocks.html#pythonblocks>`__
| standard by adding a @classarg identifier that indicates that a given
method
| utilizes an argument that's passed in via the class constructor along
with the
| type and description of that parameter.
Getting Started
---------------
To use this script, you must install some requirements (listed
`here <https://github.com/DualSpark/cloudformation-environmentbase/blob/master/setup.py#L65>`__)
| We recommend you create a `virtual
environment <https://virtualenv.pypa.io/en/latest/>`__ to isolate the
dependencies from the rest of your system, but it is not required.
| Run the following commands from the root of the environmentbase
directory to install the dependencies:
.. code:: bash
python setup.py install
To use the script itself, you can run it directly from the command line:
.. code:: bash
environmentbase --help
You must have your AWS credentials configured as required by
`boto <http://boto.readthedocs.org/en/latest/boto_config_tut.html>`__.
If you have the AWS CLI, you can run ``aws configure`` to generate the
credentials files in the appropriate place. If you have already
configured the AWS CLI, then no further steps are necessary.
You must ensure that the account you are authenticating with has at
least the following permissions:
.. code:: javascript
{"Statement": [ {"Action": ["ec2:DescribeAvailabilityZones",
"ec2:DescribeRegions"], "Effect": "Allow", "Resource": "*" }]}
This is required to perform the VPC lookups.
Once you have configured your credentials, you can run the generator as
follows:
.. code:: bash
environmentbase init
This initialization command will generate two files: ``config.json`` and
``ami_cache.json``. You may override the config filename with the
``--config-file`` parameter. This is useful when managing multiple
stacks simultaneously.
You should now look at the generated ``config.json`` file and fill out
at least the following fields:
| ``template : ec2_key_default`` - This must be the name of a valid SSH
key in your AWS account
| ``template : s3_bucket`` - S3 bucket used to upload the generated
cloudformation templates
| ``logging : s3_bucket`` - S3 bucket used for cloudtrail and ELB
logging
You must ensure that the above two buckets exist and that you have
access to write to them (they can be the same bucket). Also, the logging
s3\_bucket must have the correct access policy -- it needs to allow the
AWS ELB and Cloudtrail accounts access to upload their logging data. See
a sample access policy
`here <src/environmentbase/data/logging_bucket_policy.json>`__, just
replace all instances of ``%%S3_BUCKET%%`` with your logging bucket name
and attach the policy to your S3 bucket.
You may also edit the other fields to customize the environment to your
liking. After you have configured your environment, run:
.. code:: bash
environmentbase create
This will generate the cloudformation templates using your updated
config. It will save them both to S3 in your template bucket as well as
locally. You can use the config ``template.include_timestamp`` setting
to toggle whether or not a timestamp will be included the template
filenames (This can be useful for keeping versioned templates, it is
enabled by default). Then run:
.. code:: bash
environmentbase deploy
This will create a cloudformation stack from your generated template on
`AWS <https://console.aws.amazon.com/cloudformation/>`__
You can use the config setting ``global.monitor_stack`` to enable real
time tracking of the event stream from the stack deployment. You can
then enable ``global.write_stack_outputs`` to automatically save all the
stack outputs to a local file as they are brought up in AWS. You can
also hook into the stack event stream with your own scripting using the
``stack_event_hook()`` function in environmentbase. Simply override this
function in your controller and inject any real time deployment
scripting.
You may run the following command to delete your stack when you are done
with it:
.. code:: bash
environmentbase delete
See `File Descriptions <FILE_DESCRIPTIONS.md>`__ for a detailed
explanation on the various files generated and consumed by
EnvironmentBase
نحوه نصب
نصب پکیج whl cfn-environment-base-0.9.19:
pip install cfn-environment-base-0.9.19.whl
نصب پکیج tar.gz cfn-environment-base-0.9.19:
pip install cfn-environment-base-0.9.19.tar.gz