• Author : Daniel Hertzberg Hertzberg

 
 

Integrating Salt and Arista ZTP Server for Zero Touch Automation of EOS

Zero Touch Provisioning The term ZTP or Zero Touch Provisioning is a feature often heard, which EOS has offered since the early days. During the initial boot, if a startup-configuration file is not found in the /mnt/flash/startup-configuration directory, the EOS device will automatically boot into ZTP mode. The switch will obtain an IP address from a DHCP server including DHCP options 66 and 67. Next the switch will ask the ZTP server or a server designated within option 66/67  for a bootstrap file. In this post we will use the Arista ZTP server which can be found here.  This process is depicted in the following picture: The...
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Arista Salt integration

What is Salt? Salt is an event driven infrastructure management tool. It sounds really complex but it’s not. Salt is similar to most of the configuration tools that we use in our every day lives to configure infrastructure but there are many key differences in the way salt is architected. Salt is very unique as it has a ZeroMQ high speed messaging bus between the salt minions (in our case Arista switches) and a master which is typically a Linux server. Salt can be used to configure devices from multiple different template languages such as Jinja or YAML. Salt can...
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Docker containers on Arista EOS

Docker on EOS  In this article we will talk about what is a container, how it is applicable to Arista EOS switches and pulling containers from a public or private repot to run on a Arista physical or virtual device.  A docker container is simply a way to abstract and decouple an application from a linux(and now windows) operating system to run as a process on a host machine with the bare minimum requirements.   Docker makes creating cloud portable applications extremely easy.  So a application can be written from a mac laptop intended to be ran on a Ubuntu container...
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Using dynamic Ansible inventories to manage CloudVision switches.

Ansible Dynamic libraries with CloudVision  The common question when talking with customers about CloudVision is are we able to also use a configuration management tool such as Ansible along with CloudVision?  You can use CVP and Ansible to both manage your Arista devices.  This is a guide to dynamically pull CloudVision for its devices and automatically have Ansible use those CVP managed devices.  Arista has supported Ansible EOS modules for quite some time and are still innovating on new modules in the latest version of Ansible which at the time of writing is 2.3.  Summary Dynamic inventories are setup in Ansible...
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Graphing Arista EOS with Grafana,Telegraf and influxDB

Intro Arista devices leverage the Extensible Operating System(EOS): at the core of every Arista devices lies an unmodified Linux Kernel running a distribution of Fedora Core Linux.  Therefore, EOS devices behavior very similarly to Linux servers.  For a very long time Linux administrators have used a process on each Linux server to send metrics to a external data base and observe those metrics with a graphing tool. Since EOS is Linux-based, we are able to run the same collector agents on a Arista EOS device to collect metrics. This post will be a bit elaborate in information but will provide great detail for first...
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