Testing New SRA Release with a 2nd SRM Pair

At the time of writing this post we are currently at work on our next release of our Storage Replication Adapter for the FlashArray. In a discussion with a customer who needs the feature that we are adding (what a nice coincidence!) the question came up, “what is the best way to test?”. They want to test the SRA without fouling up their production SRM environment.

So a simple answer is well deploy two new vCenters and a SRM pair. But that requires certain hosts and similar network configuration and authentication, etc. etc. So they wanted to use their existing vCenters but NOT their existing SRM servers.

SRM used to be a fairly rigid tool (for good reason, let’s not break your DR). But in the past few years VMware has really opened it up. Loosened the tight vCenter version to SRM version, shared recovery sites, and multiple SRM pairs per vCenter pair. This is where we come in.

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Generating a Pure1 REST JWT with Python

I’ve written about generating the JSON Web Token for Pure1 REST API authentication before. Mostly around PowerShell. Though of course many may not want to use PowerShell and prefer to opt for something like Python.

So here is the process.

We have a script posted on the support site here. But that actually doesn’t return the JWT, it creates a session. So it takes the next step after the JWT. But if you just want to generate the JWT so something else can authenticate it won’t do the trick. So I made some modifications and threw it on GitHub as a gist. You can get it here:

https://gist.github.com/codyhosterman/697ebfd72c4f7f7276afc3b74e3b5e40

First off let’s review how to actually authenticate:

  1. Create a private/public key pair
  2. Enter the public key into Pure1
  3. Take the provided application ID and generate a JSON web token
  4. Send the JSON web token to Pure1 for an access token

I will walk through step 1-3. Using Python on Linux to generate the JWT.

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Persisting a Pure1 Certificate created by PowerShell

In a previous post I talk about how to easily create the private/public key needed for Pure1:

So when I create a certificate in PowerShell I store the reference in an object, in the below case the object is called $cert:

But if I close that PowerShell window the object is removed. What happens to that certificate? What if I want to re-use it? Good question.

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