:toc2:

= Preparing your Workstation to use the Ansible Playbooks



== Less prerequisites: Dockerfiles

It is possible to run agnosticd with docker. This way you don't have to install anything (except Docker).

If you want to use docker to deploy, look at the link:../tools/builds[tools/builds] Readme.

== Prerequisites
In order to use these playbooks, you will need to set a few things up.

== Software Requirements on workstation

* Some deployments would require a Red Hat Customer Portal account that has
 appropriate subscriptions. This is not required for the playbook themselves.
+
NOTE: Red Hat employee subscriptions can be used


=== Software required for deployment

* [Python](https://www.python.org) version 2.7.x (3.x untested and may not work)
* [Python Boto](http://docs.pythonboto.org) version 2.41 or greater
* [Git](http://github.com) any version would do.
* [Ansible](https://github.com/ansible/ansible) version 2.1.2 or greater
* [awscli bundle](https://s3.amazonaws.com/aws-cli/awscli-bundle.zip) tested with version 1.11.32
Python and the Python dependencies may be installed via your OS' package manager
(eg: python2-boto on Fedora/CentOS/RHEL) or via
[pip](https://pypi.python.org/pypi/pip). [Python
virtualenv](https://pypi.python.org/pypi/virtualenv) can also work.

.Example script to install required software
[source,bash]
----

# Install basic packages
yum install -y  wget python python-boto unzip python2-boto3.noarch tmux git ansible

# Another option to configure python boto is:
git clone git://github.com/boto/boto.git
cd boto
python setup.py install

#Install boto3
pip install boto3

#Install pywinrm if you plan to deploy windows VMs
#pip install pywinrm

# Enable epel repositories for Ansible
cd /tmp
wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
sudo yum -y install `ls *epel*.rpm`

# Install ansible and checked install version (required 2.2.0.0)
yum install -y ansible
ansible --version


## Install aws cli
curl "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" -o "awscli-bundle.zip"
unzip awscli-bundle.zip
sudo ./awscli-bundle/install -i /usr/local/aws -b /bin/aws
aws --version

----

.Python, pip and aws-cli Installation Instructions for MacOS Users at: https://docs.aws.amazon.com/cli/latest/userguide/cli-install-macos.html


== Configuring your workstation

=== Configure the EC2 Credentials

* You will need to place your EC2 credentials in the ~/.aws/credentials file:
[source, shell]
----
mkdir ~/.aws
cat << EOF >>  ~/.aws/credentials
[default]
aws_access_key_id = AKIAJAAYOURACCESSKEY
aws_secret_access_key = rT54UYOURSECRETACCESSKEY

EOF
----

* Add the SSH Key to the SSH Agent (optional)
If your operating system has an SSH agent and you are not using your default
configured SSH key, you will need to add the private key you use with your EC2
instances to your SSH agent:
+
----
ssh-add <path to key file>
----

NOTE: If you use an SSH config that specifies what keys to use for what
hosts this step may not be necessary.


=== AWS Permissions and Policies

AWS credentials for the account above must be used with the AWS command line
 tool (detailed below)

* An AWS IAM account with the following permissions:
- Policies can be defined for Users, Groups or Roles
- Navigate to: AWS Dashboard -> Identity & Access Management -> Select Users or Groups or Roles -> Permissions -> Inline Policies -> Create Policy -> Custom Policy
- Policy Name: openshift (your preference)
- Policy Document:
+
[source,json]
----
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Stmt1459269951000",
            "Effect": "Allow",
            "Action": [
                "cloudformation:*",
                "iam:*",
                "route53:*",
                "elasticloadbalancing:*",
                "ec2:*",
                "cloudwatch:*",
                "autoscaling:*",
                "s3:*"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}
----

NOTE: Finer-grained permissions are possible, and pull requests are welcome.


=== AWS existing resources

* A route53
 link:http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/CreatingHostedZone.html[public hosted zone]
  is required for the scripts to create the various DNS entries for the
    resources it creates. Two DNS entries will be created for workshops:
- `master.guid.domain.tld` - a DNS entry pointing to the master
- `*.cloudapps.guid.domain.tld` - a wildcard DNS entry pointing to the
      router/infrastructure node
* An EC2 SSH keypair should be created in advance and you should save the key
    file to your system.
+
[source,bash]
----
REGION=us-west-1
KEYNAME=ocpworkshop
openssl genrsa -out ~/.ssh/${KEYNAME}.pem 2048
openssl rsa -in ~/.ssh/${KEYNAME}.pem -pubout > ~/.ssh/${KEYNAME}.pub
chmod 400 ~/.ssh/${KEYNAME}.pub
chmod 400 ~/.ssh/${KEYNAME}.pem
touch ~/.ssh/config
chmod 600 ~/.ssh/config
aws ec2 import-key-pair --key-name ${KEYNAME} --region=$REGION --output=text --public-key-material "`cat ~/.ssh/${KEYNAME}.pub | grep -v PUBLIC`"
----
+
CAUTION: Key pairs are created per region, you will need to specify a different keypair for each region or duplicate the keypair into every region.
+
----
REGIONS="ap-southeast-1 ap-southeast-2 OTHER_REGIONS..."
for REGION in `echo ${REGIONS}` ;
  do
    aws ec2 import-key-pair --key-name ${KEYNAME} --region=$REGION --output=text --public-key-material "`cat ~/.ssh/${KEYNAME}.pub | grep -v PUBLIC`"
  done
----

== OpenStack

----
# Install python modules needed by ansible
sudo pip install openstacksdk

# Install openstack CLIs
sudo python-openstackclient python-heatclient
----

=== Azure

If you want to deploy on azure you will need the Azure client.

https://docs.microsoft.com/en-us/cli/azure/install-azure-cli?view=azure-cli-latest[Source documentation]

.in a nutshell (tested on fedora 28) - Azure cli (system-wide)
----

# Install the azure-cli system-wide
sudo -i
rpm --import https://packages.microsoft.com/keys/microsoft.asc
cat >> /etc/yum.repos.d/azure-cli.repo <<EOF
[azure-cli]
name=Azure CLI
baseurl=https://packages.microsoft.com/yumrepos/azure-cli
enabled=1
gpgcheck=1
gpgkey=https://packages.microsoft.com/keys/microsoft.asc
EOF

yum check-update
yum install -y azure-cli
----

We recommend you install the ansible module in a virtualenv.

.in a nutshell (tested on fedora 28) - Azure ansible module (use virtualenv)
----
# /!\ careful this will update ansible as well
# Use a virtualenv for those:
pip install --upgrade pip
pip install --upgrade --force ansible[azure]
----

NOTE: `--force` is used here, because of a known link:https://github.com/ansible/ansible/issues/38894[issue].

==== Service principal

It's better to use a service principal instead of your main credentials. Refer to the https://docs.microsoft.com/en-us/cli/azure/create-an-azure-service-principal-azure-cli?view=azure-cli-latest[official documentation].

.in a nutshell
----
az login
az ad sp create-for-rbac
az login --service-principal -u <user> -p <password-or-cert> --tenant <tenant>
----

.env_secret_vars.yml
----
azure_service_principal: "service principal client id"
azure_password: "service principal password or cert"
azure_tenant: "tenant ID"
azure_region: "Azure location, ex: EuropeWest"
azure_subscription_id: "Subscription id"
----


=== Virtualenv

If you want to use virtualenv, you can try & adapt this:

----
cd ansible
mkdir ~/virtualenv-aad
virtualenv ~/virtualenv-aad -p python2.7
. ~/virtualenv-aad/bin/activate
export CC=gcc-5
pip install -r requirements.txt
----

