Using or not using Vagrant

[Mahmood Naderan]

Hi,

I have read the document about the power of Vagrant. However, still something is not clear for me. What do I miss in case of not using Vagrant. I mean, what is the problem when I build a cluster (more than one machine or something else) and ignore the Vagrant.

Can someone explain that?

Regards,
Mahmood

[Antony Stone]

On Saturday 17 February 2018 at 11:11:19, Mahmood Naderan wrote:

> Hi,
> I have read the document about the power of Vagrant. However, still
> something is not clear for me. What do I miss in case of not using Vagrant.
> I mean, what is the problem when I build a cluster (more than one machine
> or something else) and ignore the Vagrant.

I think we can only answer this if you tell us how you would build the cluster
without using Vagrant; then we know what we are comparing it against.


Antony.

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[Alvaro Miranda Aguilera]

i can explain from an linux/cluster/db point of view.

I was oracle dba as full time job for many years and there are several steps and repetition.

on oracle, versions have been

11.2 12.1 12.2

environents can be

single 

multi node

and you get a mix of versions.

say you understand a single node cluster is similar to a multi node cluster, for some high level test you can have 1 node cluster

or sometimes you need a 2 or more node clusters

in oracle world, a process usually goes like this

create vm

setup disk

setup network

add additional nodes

install os

install deps

install cluster

install db sw

create dummy db

here is where automation helps, doesn't matter which you use.. shell scripts, puppet, ansible, the power is the time you free of doing already known task, so you can focus on the specific test or feature you want to use

may sound cliche, but i assure you is not

with automation, i did multiples things.

automated a 2 node cluster, and documented how to add a 3rd one. 

automated a 2 node cluster, destroy one and document how to recover

automated a 2 node cluster, documented how to upgrade

etc, etc, etc

with an internet friend we did cross a vagrantfile project i did with his ansible modules and we created this:

https://github.com/racattack/racattack-ansible-oracle

is a end to end  oracle rac cluster that is used by lots or consultants to spin nodes, we have got even ppl from oracle it self using it

on a home machine a setup can take 90 mins that you just wait, vs each install by hand can take half a day or more

so automation gives you free time to focus on what matters

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