NetDevOps - Packetswitch

Ansible with Cisco - Variables

PrerequisiteThis blog post assumes you have a basic understanding of Cisco devices and Ansible. If you are not familiar with Ansible, I highly recommend reading my previous Ansible introduction posts here: Ansible and Cisco ExampleI will show you the step-by-step guide to Install Ansible for basic Network Automation. This includes

NetDevOps

Using Ansible with Vagrant

If you are not familiar with Vagrant, I highly recommend reading my previous Vagrant Introduction post here. Vagrant for NetDevOpsThere were many situations in the past where I had to quickly set up a Syslog or a Radius server to test and troubleshoot something on my Network.PacketswitchSuresh VinasiththambyVagrant supports

NetDevOps

Vagrant for NetDevOps

There were many situations in the past where I had to quickly set up a Syslog server or a Radius server to test and troubleshoot an issue on my Network. I usually end up downloading Ubuntu/CentOS ISO, adding it to VirtualBox, configuring the IP and then installing the required

NetDevOps

Using Python to resolve multiple hostnames to IP addresses

As a Network Engineer, I work with IP addresses all day long. But most of the time I am handed out hostnames rather than IP addresses to work with. I can of course use nslookup or ping to quickly resolve the hostnames to IP addresses but imagine having more than

NetDevOps

Palo Alto and Ansible Example

In this blog post, I will show you how to use Ansible to deploy configurations to the Palo Alto Firewalls. Setting up the environmentI'm using Ubuntu 18.04 server for this example. Ansible Galaxy Role pip pan-os SDK Palo Alto Networks Ansible Galaxy Rolehttps://ansible-pan.readthedocs.io/en/latest/ The

NetDevOps

Network Configuration Backup with Ansible and Git

The typical way you would perform Network Configuration Backup is by using NCM software such as Solarwinds NCM, Rancid, Oxidized etc. However, you can also utilise Ansible and Git to perform the backups. I know it sounds silly, why would anyone do it? But believe me, it requires very little

Terraform

Terraform VPC example with for_each loop

On my previous post, we used count parameter to deploy multiple resources of the same kind. This method may cause some unintended results. Let's take a look at the route table as an example. You can check out my previous post here: Terraform AWS VPC ExampleTerraform is a tool for

NetDevOps

Ansible with Cisco - Part 2 ios_config module

Cisco IOS configurations use a simple block indent file syntax for segmenting configuration into sections. Ansible ios_config module provides an implementation for working with IOS configuration sections in a deterministic way. This post continues my previous post Anisble with Cisco Part 1. Ansible with Cisco - Part 1 Installation

NetDevOps

Ansible with Cisco - Part 1 Installation and basic set up

Despite the fact that Network is one of the critical components of a business, true Network Stack automation is almost non-existent (or very minimal). When companies automate their Networks, they (mostly) deploy proprietary vendor-specific software that requires extensive training. Manually managing long, extensive, and sophisticated methods of procedure results in

Terraform

Terraform Data Sources

Terraform defines datasources as: Data sources allow data to be fetched or computed for use elsewhere in Terraform configuration. Use of data sources allows a Terraform configuration to make use of information defined outside of Terraform, or defined by another separate Terraform configuration.In simple words, let's say you have

Terraform

Terraform Remote State

Terraform state Terraform must store state about your managed infrastructure and configuration. This state is used by Terraform to map real-world resources to your configuration, keep track of metadata, and improve performance for large infrastructures. This state is stored by default in a local file named "terraform.tfstate" (shown below)

Terraform

Terraform + AWS

I recently started working with Terraform and decide to write a post about it. This would be an introduction to managing AWS using Terraform. Terraform helps to automate the deployment of servers and other infrastructure on AWS.ScenarioLet's say we need to create VPC, public subnet, route table, Internet gateway