added centos/rhel installation on netbox.md postgresql.md and web-server.md

docs/installation/netbox.md

@@ -2,6 +2,8 @@
 
 NetBox requires following system dependencies:
 
+Debian/Ubuntu
+
 * python2.7
 * python-dev
 * python-pip
@@ -12,9 +14,26 @@ NetBox requires following system dependencies:
 * libpq-dev
 * libssl-dev
 
+Centos/RHEL
+
+* python27
+* python-devel
+* git
+* python-pip
+* libxml2-devel
+* libxslt-devel  
+* libffi-devel
+* graphviz
+* openssl-devel
+
+### Debian/Ubuntu
 ```
 # sudo apt-get install -y python2.7 python-dev python-pip libxml2-dev libxslt1-dev libffi-dev graphviz libpq-dev libssl-dev
 ```
+## Centos/RHEL
+```
+# sudo yum install -y epel-release
+# sudo yum install -y python27 python-devel git python-pip libxml2-devel lbxslt-devel libffi-devel graphviz.x_86_64 openssl-devel
 
 You may opt to install NetBox either from a numbered release or by cloning the master branch of its repository on GitHub.
 
@@ -76,7 +95,7 @@ Move into the NetBox configuration directory and make a copy of `configuration.e
 ```
 
 Open `configuration.py` with your preferred editor and set the following variables:
- 
+
 * ALLOWED_HOSTS
 * DATABASE
 * SECRET_KEY
@@ -143,8 +162,8 @@ NetBox does not come with any predefined user accounts. You'll need to create a
 # ./manage.py createsuperuser
 Username: admin
 Email address: admin@example.com
-Password: 
-Password (again): 
+Password:
+Password (again):
 Superuser created successfully.
 ```
 

docs/installation/postgresql.md

@@ -4,13 +4,27 @@ NetBox requires a PostgreSQL database to store data. MySQL is not supported, as
 
 The following packages are needed to install PostgreSQL with Python support:
 
+Debian/Ubuntu
+
 * postgresql
 * libpq-dev
 * python-psycopg2
 
+Centos/RHEL
+
+* postgresql
+* postgresql-server
+* postgresql-libs
+* postgresql-devel
+
+Debian/Ubuntu
 ```
 # sudo apt-get install -y postgresql libpq-dev python-psycopg2
 ```
+Centos/RHEL
+```
+# sudo yum install postgresql postgresql-server postgresql-libs postgresql-devel
+```
 
 # Configuration
 

docs/installation/web-server.md

@@ -1,18 +1,29 @@
 # Web Server Installation
 
-We'll set up a simple WSGI front end using [gunicorn](http://gunicorn.org/) for the purposes of this guide. For web servers, we provide example configurations for both [nginx](https://www.nginx.com/resources/wiki/) and [Apache](http://httpd.apache.org/docs/2.4). (You are of course free to use whichever combination of HTTP and WSGI services you'd like.) We'll also use [supervisord](http://supervisord.org/) to enable service persistence. 
+We'll set up a simple WSGI front end using [gunicorn](http://gunicorn.org/) for the purposes of this guide. For web servers, we provide example configurations for both [nginx](https://www.nginx.com/resources/wiki/) and [Apache](http://httpd.apache.org/docs/2.4). (You are of course free to use whichever combination of HTTP and WSGI services you'd like.) We'll also use [supervisord](http://supervisord.org/) to enable service persistence.
 
+Debian/Ubuntu
 ```
 # sudo apt-get install -y gunicorn supervisor
 ```
+Centos/RHEL
+```
+# sudo yum install -y gunicorn supervisor
+```
 
 ## Option A: nginx
 
 The following will serve as a minimal nginx configuration. Be sure to modify your server name and installation path appropriately.
 
+Debian/Ubuntu
+
 ```
 # sudo apt-get install -y nginx
 ```
+Centos/RHEL
+```
+# sudo yum install -y nginx
+```
 
 Once nginx is installed, proceed with the following configuration:
 
@@ -43,7 +54,7 @@ Save this configuration to `/etc/nginx/sites-available/netbox`. Then, delete `/e
 ```
 # cd /etc/nginx/sites-enabled/
 # rm default
-# ln -s /etc/nginx/sites-available/netbox 
+# ln -s /etc/nginx/sites-available/netbox
 ```
 
 Restart the nginx service to use the new configuration.
@@ -57,9 +68,16 @@ To enable SSL, consider this guide on [securing nginx with Let's Encrypt](https:
 
 ## Option B: Apache
 
+Debian/Ubuntu
+
 ```
 # sudo apt-get install -y apache2
 ```
+Centos/RHEL
+
+```
+# sudo yum install -y httpd
+```
 
 Once Apache is installed, proceed with the following configuration (Be sure to modify the `ServerName` appropriately):