1. Software Requirements¶

We will use RedHat Software Collections to satisfy these requirements:

Apache HTTP Server 2.4
NGINX 1.6
Phusion Passenger 4.0
Ruby 2.2 with rake, bundler, and development files
Node.js 0.10
Git 1.9

In this tutorial RHSCL (RedHat Software Collections) packages are installed under /opt/rh. This tutorial is also done from an account that has sudo access but is not root.

Enable the RHSCL repository. Note that you may also need to enable the Optional channel and attach a subscription providing access to RHSCL to be able to use the repository.
```
sudo subscription-manager repos --enable=rhel-server-rhscl-6-rpms
# => Repository 'rhel-server-rhscl-6-rpms' is enabled for this system.
```
Warning

If using RHEL 7 you will need to replace the above command with:
```
sudo subscription-manager repos --enable=rhel-server-rhscl-7-rpms
```

Install dependencies:

sudo yum install -y \
  sqlite-devel \
  httpd24 \
  nginx16 \
  rh-passenger40 \
  rh-ruby22 \
  rh-ruby22-rubygem-rake \
  rh-ruby22-rubygem-bundler \
  rh-ruby22-ruby-devel \
  nodejs010 \
  git19

Update the Apache Environment to include Ruby 2.2. This is necessary for the user mapping script written in Ruby.

Edit /opt/rh/httpd24/service-environment and replace the following line:
```
HTTPD24_HTTPD_SCLS_ENABLED="httpd24"
```
with
```
HTTPD24_HTTPD_SCLS_ENABLED="httpd24 rh-ruby22"
```
Warning

If using RHEL 7 you will also need to override the systemd configuration for Apache. You can modify it directly by either calling:
```
sudo systemctl edit httpd24-httpd
```
or by creating and modifying the file below with your favorite editor:
```
/etc/systemd/system/httpd24-httpd.service.d/override.conf
```
You will then add the following to override the default settings:
```
[Service]
KillSignal=SIGTERM
KillMode=process
PrivateTmp=false
```
Finally, save your changes and run:
```
sudo systemctl daemon-reload
```
Finally, make a source directory that will contain the checked out and built OOD infrastructure components and apps:
```
mkdir -p ~/ood/src
```