Wouldn't you love to be able to simply wave a wand and layers of resources in your AWS account would suddenly - and magically - spring to perfectly configured life, ready to meet your complex infrastructure needs? If you already have experience with AWS, then you know how much of a pain it can be to work through web page after web page in the Amazon management console as you manually provision services.
But neither of those options lives quite so close to your existing infrastructure - or uses as familiar a way of operating - as Ansible. If you're already using Ansible for your on-premises operations, plugging it into your AWS account can sometimes be the quickest and most painless way to migrate operations to the cloud. Being able to "declare" the precise configuration results you want and then produce them by getting Ansible to read a playbook is Ansible's magic wand.
When properly planned, it's amazing how simple it can be to execute complex, layered AWS deployments. Before we launch a simple "Hello World" Ansible playbook, let's first make sure you've got a properly-configured working environment through which Ansible can communicate with all its new friends in your AWS account.
As you probably already know, Ansible is an orchestration tool that lets you write plain-text playbook files that declare the software profile and ideal state you'd like applied to a target server.
Those servers - known as hosts - can be provisioned for just about any digital workload you can imagine, using just about any combination of application software, and running on just about any platform. In the good old days, when a playbook was run against a physical server, Ansible would employ an existing SSH connection to securely login to the remote host and go about building your application. But that won't work for AWS workloads.
You see, because the EC2 instances and other infrastructure you want to launch don't yet exist, there can be no "existing" SSH connections. You don't have to know how all that works, but it has to be there so it can work. We won't be using the CLI itself for anything important, but installing it will give us all the dependencies we'll need.
Use Ansible to build and manage AWS EC2 instances
You can find out how to make this work on the latest version of whatever OS you're using from the AWS documentation page. Working with the Python package manager, PIP, is a popular way to get all this done.
I should note that, as I write this, Python 2 is still alive So there might sometimes still be separate Python 2 and Python 3 versions installed on your system. Since Python 2 will soon be fully deprecated, you probably won't have to worry about specifying python3 or pip3 with your commands: that should be automatic.
Here's how those keys will look don't get any naughty ideas, these aren't valid :. Just remember that a pair of keys issued to the root user of your AWS account provides full access to your entire AWS account. Anyone in possession of those credentials would be quickly able to run up six and even seven figure services charges, so be very careful how you use and store them.
Ideally, you would be better off limiting your risk exposure by creating an admin user in the AWS Identify and Access Management IAM service with limited powers and using a key issued to that user. At any rate, why am I doing this? The value of populating my AWS credentials file is that Ansible is smart enough to look for it and, if no other authentication keys are available in the system environment, it'll use these.
You'll soon see how mighty convenient that will be. But one thing you should definitely NOT do is hardcode the keys in your playbook files - especially if you plan to push them to an online repository like GitHub. This simple command will list any S3 buckets I happen to have within this account. We're now ready to install ansible. I'll go with pip3 for that. I could use the regular Ubuntu apt repository just as easily, but it will most likely install a slightly older version.
Depending on your network connection, that'll take a minute or two, but I'll skip most of that. I'll confirm that it's properly installed by running ansible --version. My user here, by the way, is called ubuntu. You can also see that we're using a nice, up-to-date version of Python 3.
One more step. So we'll need to install the boto and boto 3 packages. I'll go with PIP for this one, too. Once that one has been brought on board, we'll be ready to get some real stuff done.CloudFormation is a graphical tool that allows you to draw how your infrastructure should look and behave.
I am assuming that you are using a modern version of Linux like Ubuntu or Centos. You need to have the latest version of Ansible installed. You can build almost any sort of environment of AWS no matter how simple or complex it can get. Firt things first. So, boto3 needs to be installed on your machine. Issue the following command on your terminal:. Since they are sensitive data, we should use Ansible vault for this:.
Adding the following to. OK, now let's edit our playbook file. First, you're limiting the scope of the playbook to the local hosts group. It contains localhost and this is the way Ansible will work with EC2 instances. Behind the scenes, Ansible connects to Python boto on the local machine and use to establish connection with the AWS API and issue the necessary commands. We need to set the connection to local so that Ansible won't attempt to establish an SSH connection session with localhost unnecessarily.
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Now that we've defined the settings that will be used in the playbook, let's start adding the tasks:. The module needs a name for the security group. It also needs a region and a description. Now comes the main part of the task: the rules.
AWS security groups access two types of tules: incoming and outgoing engress. We're more interested in what arrrives at our instance rather than what leaves it.
So, we instruct our security group to allow:. We are not placing any filters on this. After creating the security group, our playbook may go ahead and create the instance itself. Add the following to the playbook file:. Nothing new here. We've just used a different Ansible module, ec2. Then, we passed the necessary paramters that it will need to create our instance:. Once the instance is created, we'll need to be able to contact it. The following task will add the instance s to a group called webservers.
The group will be created if it does not already exist. In our case, we are adding the instance to webservers group. It takes the instances list in the ec2 variable that we created in the previous task. This is necessary if you are creating more than one instance so that Ansible will loop through all of them. Each instance can be referred to by item. AWS allows you to add tags to your instances. A tag consists of a name and a value. We will need to add at least one tag to our instance specifying its name.
The reason we need this tag is to be able to identify our instances later on when we need to perform additional actions against them, including termination. You can add the following task to the playbook to tag the instance:.
Before starting to communicate with our machine to deploy Apache, we need to ensure that the creation process is complete and that the SSH daemon is ready to receive connections.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
How to install ansible on AWS-setup ansible lab in aws with ec2 instances
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. AWS modules in Ansible version 2. Presence of localhost in the used inventory file is sufficient to trigger the error.
It doesn't need to be in the used host group as the above example shows. If these files are inaccurate, please update the component name section of the description or use the! This may be an issue of using the wrong Python virtualenv. In connection: local Ansible should use the same virtualenv the ansible-playbook command is executed in. Please check that that environment has boto3 correctly installed. To check, you can do the tasks:.
Removing localhost from the inventory is the correct path forward, to allow ansible to utilize implicit localhost. Alternatively if you need to list localhost in inventory, you should additionally include something such as:. Please provide the output from ansible 2. Please respond or the issue will be closed. Ansible 2. On fedora with OS packages. I will try creating a virtualenv and getting the latest from pypi via pip:. There is no localhost in my inventory. Firstly, sivel Was right in his comment about the impact of the implicit host.
Also because of the above ryansb test should be upgraded to:. I am using ansible role in my autoscaling group so there is a cloud-init file to run ansible-playbook as below. This feature will be removed in version 2.
It works when i run my role while ec2 instance running. After that the instance wake up when i execute role again manually via connected to the instance it works and complete successfull but this problemlem only occured new instance initialization.
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Sign up. New issue. Jump to bottom. Copy link Quote reply.Released: Apr 8, View statistics for this project via Libraries. You can find the latest, most up to date, documentation at our doc siteincluding a list of services that are supported. Assuming that you have Python and virtualenv installed, set up your environment and install the required dependencies like this instead of the pip install boto3 defined above:.
You can run tests in all supported Python versions using tox. By default, it will run all of the unit and functional tests, but you can also specify your own nosetests options. Note that this requires that you have all supported versions of Python installed, otherwise you must pass -e or run the nosetests command directly:.Working with Ansible Dynamic Inventory
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Server Fault is a question and answer site for system and network administrators. It only takes a minute to sign up. This turned out to be because Ansible is attempting to retrieve EC2 facts on the remote host because that's what I told it to, d'Oh! Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 11 months ago. Active 3 months ago.
Viewed times. Bryan Solan Bryan Solan 6 6 bronze badges. Active Oldest Votes. Justin Ludwig Justin Ludwig 2 2 silver badges 4 4 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. The Overflow How many jobs can be done at home?The purpose of this section is to explain how to put Ansible modules together and use inventory scripts to use Ansible in AWS context.
All of the modules require and are tested against recent versions of boto. Whereas classically ansible will execute tasks in its host loop against multiple remote machines, most cloud-control steps occur on your local machine with reference to the regions to control.
Authentication with the AWS-related modules is handled by either specifying your access and secret key as ENV variables or module arguments. For example:. This means if there are 0 instances already existing, then 5 new instances would be created. If there were 2 instances, only 3 would be created, and if there were 8 instances, 3 instances would be terminated. This facilitates performing configuration actions on the hosts immediately in a subsequent task.
With the host group now created, a second play at the bottom of the same provisioning playbook file might now have some configuration steps:. Security groups on AWS are stateful. The response of a request from your instance is allowed to flow in regardless of inbound security group rules and vice-versa.
Rather, the best way to handle this is to use the ec2 dynamic inventory script. See Working with dynamic inventory. This will also dynamically select nodes that were even created outside of Ansible, and allow Ansible to manage them. See Working with dynamic inventory for how to use this, then return to this chapter. When using the ec2 inventory script, hosts automatically appear in groups based on how they are tagged in EC2.
See Organizing host and group variables. Similar groups are available for regions and other classifications, and can be similarly assigned variables using the same mechanism. Amazon Autoscaling features automatically increase or decrease capacity based on load. There are also Ansible modules shown in the cloud documentation that can configure autoscaling policy.
When nodes come online, it may not be sufficient to wait for the next cycle of an ansible command to come along and configure that node. To do this, pre-bake machine images which contain the necessary ansible-pull invocation.
Ansible-pull is a command line tool that fetches a playbook from a git server and runs it locally.
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I had the same problem on MacOS and downgrading didn't fix the issue. However, adding the following python path to a hosts file fixed the issue:. If you're on Mac and you have installed other copies of python via homebrew, you can run these commands to install boto to the system python:. Learn more. Ansible fails to find boto3 and botocore although installed Ask Question. Asked 1 year, 9 months ago. Active 7 months ago. Viewed 3k times. Nothing in your question indicates that Ansible runs the same Python executable as pip does.
I don't know.
You should, you are sitting at the console. You execute some pip and you seem to think it should run the same Python as Ansible's default. Prove that it does. Active Oldest Votes. Could you try to downgrade "boto3" package to see if there is no issue there? Rezney Rezney 1 1 silver badge 15 15 bronze badges. Rene B. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
The Overflow Blog. The Overflow How many jobs can be done at home?
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