DevOps turned five last October, and while five years seems like a long time in terms of the technology adoption lifecycle, DevOps and Continuous Delivery still seem perched on the Enterprise IT chasm. The Pragmatists get it. They are under pressure from the business to deliver business value faster, better and more cheaply and the Visionaries and Early Adopters have proven that Continuous Delivery fits the bill.
The problem is that Enterprise IT can
System’s programmers on the mainframe have a pretty difficult time these days. More and more complexity, rampant growth of z/Linux, Websphere and RD&T boxes. Draconian constraints, compliance and governance mandates to be applied. All with fewer and fewer resources. It is a common problem.
Serena is here to help. Our ChangeMan SSM technology is designed to be the SysProg’s best friend and unswerving ally.
Sitting quietly in the background monitoring system datasets and members like the APF authorized libraries, the LINKLIST datasets, console commands and any
Errors do occur. They occur for a reason. Often those reasons are out of our control. Someone changes an IP Address of a server. Someone changes the password to the back office system. Someone changes the name of a shared .DLL.
Of course in a well-managed and carefully controlled environment those kinds of things shouldn’t happen without the proper authentication, notification and approval. And the infamous “someone” is a responsible professional who calculates the impact of their changes and collaborates with everyone to minimize that impact. In a perfect world.
In the real world change is constant and calculating the consequences of change
As the DevOps movement approaches its 5 year anniversary, the question remains: is the movement ready to cross the chasm into mainstream IT?
Stories of unicorns abound, and if we believe the vendors and early adopter case studies for the enterprise, we would be feeling that we are on the other side of the chasm, ready to get inside the tornado, change the culture
Helicopters have been described as “10,000 parts flying together in close formation. It is the mechanic’s job to keep that formation as tight as possible.”
Modern software applications comprise of millions of parts when you consider the huge chunks of code we bind into our applications from the database, security, web server, communications, encryption and authentication vendors. Add to that the seemingly infinite numbers of dependencies on external web services and internal CRM and financial systems.There are 100 million lines of code in the Ford Taurus
But, just like the helicopter’s mechanic, the
“I don’t want to know why it happened: I just want you to fix it!” was what I was told early one morning by the Director of Sales. And she was right: getting the online store back online was the most important thing for the business. Blamestorming would come later.
There is a temptation at 3:00 am to just do whatever it takes to bring the system back on the air even if that means bypassing protocols and procedures designed to protect system integrity. Sales-and-Marketing and Audit-and-Compliance might not see eye-to-eye on this approach.
So why do emergency fixes have to be different? This myth is all about time. The time it takes to write the script.
In the last post we talked about some of the myths about release and deployment. Perhaps the most telling comment there was the belief that “Every deployment is unique.”
Let’s break that apart and see what it really means and why it just doesn’t hold up in reality.
Deploying an application comprises of a number of parts:
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