Rob and I talked about these and other topics before the holidays. We also covered related topics including the skills shortage, complexity of the software supply chain, and building infrastructure automation pipelines.
Related links:
- RackN
- Nine Questions to Build Great Infrastructure Automation Pipelines (Video of presentation by Rob at SREcon21)
- Global Tech Outlook survey discussed in podcast
- Operate First
Listen to the podcast [30:39 - MP3]
[TRANSCRIPT]
Gordon Haff: I'm here today with Rob Hirschfeld, the co founder and CEO of RackN, on our just before the holidays discussion. Our focus today is going to be on managing complexity.
The reason this is an interesting question for me is, we seem to be getting to this stage where open source on the one hand gives you the ability to get under the hood and play with code, and to run it wherever you want to.
But we seem to be getting to the point though where people are saying, that's really hard to do though, so maybe we should just put everything on a software as a service or on Amazon Web Services (which I think is actually down at the moment) but purports to solve that complexity problem.
Welcome, Rob.
Rob Hirschfeld: I'm excited to be here. This complexity tsunami that people are feeling is definitely top of mind to me because it feels like we're reaching a point where the complexity of the systems we've built is sort of unsustainable, even to the point where I've been describing it as the Jevons Paradox of Complexity. It's a big deal.
I do think it's worth saying up front, complexity is not bad in itself. We have a tendency to be like, "Simplify, simplify. Get rid of all the complexity." It's not that complexity is bad or avoidable. It's actually management like you stated right at the start. It's a managing complexity problem, not a eliminating complexity problem.
Gordon: To a couple of your points to managing complexity, I mentioned we'll just use a software as a service. Using a software as a service may be just fine.
At Red Hat, we don't run our own email servers any longer. We used to. We use software as a service for email and documents, which obvious of course causes this little tension, but shouldn't we be doing everything in open source?
The reality is that with modern businesses, you have to decide where to focus your energy. Way back when Nick Carr at Harvard Business Review wrote an article, basically, "Does IT Matter?" Nick, I think, particularly the way we view things today, perhaps deliberately overstated his case, but he was absolutely right that you have to pick and choose which IT you got to focus on and where you differentiate.
Rob: I think that that's critical and we've been talking a lot in the last two years about supply chains. It is very much a supply chain question. Red Hat distributes the operating system as a thing and there's a lot of complexity between the code and your use of it that Red Hat is taking care of for you.
That's useful stuff to take out of your workflow and your process. Then one of the challenges I've had with the SaaSification piece here and I think we've seen it with outages lately is that there is a huge degree of trust in how the SaaS is running that business for you and their operational capability and what they're doing behind the scenes.
The Amazon outage, the really big one early in December exposed that a lot of the SaaSs that depended on Amazon had outages because Amazon was out. So you don't just have the SaaS and delegate to the SaaS.
I've been asking a question of how much you need to pierce that veil of… do you care about where the SaaS is running and how the SaaS is operating and how the SaaS is protecting what you're doing because you might have exposure that you happily are ignoring based on employing a SaaS.
That could come back to bite you or you could be operationally responsible for any work.
Gordon: Of course, if you are a customer of that SaaS, you don't care if the SaaS is saying, "But, but...It's not our fault. It's Amazon's fault." That's not a very satisfactory answer for a customer.
Rob: It could be if you've acknowledged the risk. People were talking about some of these outages as business snow days where everybody is down and you can't do anything. Some businesses have the luxury for that, but not very many want their email systems to be down or their internal communication systems to be down.
Those are business critical systems or their order entry, order taking or the delivery systems and those outages take a lot to recover from.
I think that, and if somebody is listening to this with a careful ear, they're like, "But if I was doing it myself, it could go down just as easily," and that's entirely true and this is a complexity balance thing.
It's not like your email system is.. you're going to do a better job managing it than a service provider is doing. They arguably have better teams and they focus on doing it, it's the main thing they do, but they actually do it in a much more complex way than you might.
You might be able to run a service or a system in the backend for yourself in a much simpler way, than Amazon would do it for you. They might have the capability to absorb that difference, but we're starting to see that they might not.
Gordon: I want to touch on another element of supply chain that it's very much in my ballpark, in open source, and that is the software supply chain. One of the things that we've been seeing recently, and in fact, it was a [US Federal] executive order earlier this year that related to this, among other things.
That software out there, open source or non open source, 90 percent of it came from somewhere else. That somewhere else might include somebody does this as a hobby in their spare time in their basement. There was a lot of publicity around this with the Heartbleed exploit a few years ago.
I think some of those low hanging fruit have been cleared off, but at the same time they...
Rob: We're talking about Log4j is dominating the news cycle right now, and that's maintained by a couple of volunteers, because we thought it was static stable code. No. It is a challenge, no matter which way you go. I think there's two places that you and I both want to talk about with this.
Part of it is, that open source aspect and how the community deals with it. Also, the assumption of we're going to keep finding vulnerabilities and patches and errors in everything and the user's responsibility to be able to patch and update from that perspective, which is also part of open source.
Gordon: Yeah. Actually to the point of the user responsibility, we ran a survey fairly recently, it's something we do every year, our Global Tech Outlook survey. One of the questions that we asked there, a lot of questions are around funding priorities.
As you could expect, security was...Well, at least ostensibly a funding priority, sometimes a little bit uncertain about how to take things. That, oh yes, we know there should be a funding priority, whether or not it actually is, but anyway, we asked about what the security funding priorities were underneath that.
The top were things you'd expect. Classic security stuff like network security, so presumably firewalls and things like that. The very bottom, though, we were just talking about supply chains. The very bottom was essentially the software supply chain. This is after Joe Biden putting out the executive order and everything.
I don't know quite how to take that one. One interpretation says, the message hasn't really gotten out there yet. I don't know to what degree I believe that. The other way to take it is that, yeah, this is important, but Red Hat's taking care of that for us.
Even though, we are using all of this open source code in our own software. Then I think the third area may be that, yes, this is a priority, but we don't think this is very expensive to fix.
Rob: I think that the security budget is very high for magic wands and the availability of magic wands is very limited. [laughs] What you're describing at the bottom of the stack of the software supply chain, is part of what I see the complexity problem being.
We have to step back and say, "How do companies cope with complexity?" [laughs] The number one way they cope with complexity is to ignore it.
It's like, I'm going to send it to a SaaS and pretend they're going to be up all the time, or I'm going to use this library and pretend that it's perfect and flawless. Everything's great.
I agree with you. Red Hat with the distro effectively is doing some of that work for you, and you're buying the, "OK, somebody has eyes on this for me." That assumption is maybe marginally more tested.
I think when we start looking at these systems, we need to think through, OK, software is composed of other components and those other components have supply chains. Those components have components.
Before we got into the containers, we used to do RPM, install whatever it is, keep up whatever it is. We had to resolve all those dependency graphs dynamically at the moment and it was incredibly hard to do. Software was very fragile from that perspective.
A lot of people avoided patching, changing, or updating because they couldn't afford to resolve that dependency graph. They ignored it.
Docker, let us make that immutable and put it all into a container and do a build time resolution for it. Which I think is amazing, but it still means that you have to be thinking through at least at some point when you're pulling all those things in.
I don't think people think of containers as solving the complexity problem of the application dependency graph, I do. It's one of those ways that you can very consciously come in and say, "We're going to manage this very complex thing in the process." It's a complex thing if it's fragile.
Part of managing complexity is being able to say, "Where do I have hidden complexity lurking for what I do?" If you have something that's fragile and hard to repeat, or requires a lot of interventions to fix, you've identified a part of your process that that is complex, or maybe, dangerously complex from that perspective.
Gordon: Some things inherently have a degree of complexity. Again in most cases, there's probably some magic SaaS things out there for some very small problems but by and large, you're still not eliminating complexity there.
I think the other related problem that we're seeing right now too, and again, from our Global Tech Outlook survey is a big problem, was training people skills. There seems to be a real shortage of, it's hard to hire people. You're CEO of a company, I'm sure you're exposed to this all the time.
Rob: We are, and our customers are. Our number one challenges with any go to market with our customers is the life cycle of the employees at the customer site. We have customers where they have a reorg and a management change, or they lose the lead on a solution, and we have to reset and retrain.
It sets schedules back, let alone hiring our own people and getting them up to speed to train. There's a huge bug with this. I don't think companies are particularly watching for the idea of how the work that their people do, or adding to the complexity and increasing the risk of what they do.
A lot of times, people inherently absorb complexity risk by doing the work. We do DevOps and automation work. Our job is to create standard repeatable automation, Infrastructure as Code.
The tools that are out there today, people use them. They use them in ways that they think are right and work for them. They don't have a lot of repeatable practice that each team follows or can be replicated across the organization and so you get into the training.
This is where I'm trying to go with the skills training piece. Skills training is partially, "How do I use the tools and the infrastructure and the automation?" Part of it is, "How do I figure out what the person before me did, or the person next to me is doing so that we can connect those pieces together?"
We spend a lot of time and add a lot of complexity when we don't take time to understand. This is a development practice, "How do I get code that I don't have to maintain, that I don't have to understand?" That actually is another way to reduce complexity with this. Does that make sense?
I think about Infrastructure as Code, which is a new way of thinking about DevOps and automation. Today, a lot of people write their own automation and it's very hard to reuse or share or take advantage of standard practice. But we do in development. In development we do a good job with that.
You can say, "All right, this library or this component is standard, and I'm going to bring it in. I'm not going to modify it, I don't need to. I'm going to use it the way it's written." That approach reduces the complexity of the systems that we're talking about quite a bit.
Gordon: I think one of the things that we're seeing, right now I'm working on something called Operate First, and our idea here is to basically form a community around essentially an open source approach to large scale operations.
It's still pretty early on. Operations have been divorced from open source, and frankly, DevOps notwithstanding from a lot of the development effort, and practices that have gone there.
Rob: I strongly agree with you. It's one of those things because open source communities are amazing at building infrastructure, or building code, building practice.
It's been a struggle to me to try and figure out how to help people collaborate about operations. What I used to think of back in my OpenStack days as glass house operations. You can't expose everything because they're secrets and credentials and things like that.
In building this next generation of automation, infrastructure, pipelines generation, we need to figure out how do we have more collaboration? How do we have people share stuff that works? How do people build on each other's work, and this is the heart, and recognize that operations have a lot of complexity in them.
There's a difference. You can't turn around and say, "Hey, you're going to operate this exactly like I do and it's going to be simpler for you because you're following me"
We saw this. Early Kubernetes days, there were some people who wrote an Amazon installer, called it as kOps. This is the one I'm thinking of specifically, K O P S. Literally, if you set it up exactly as is, it would install Kubernetes on Amazon very reliably because Amazon was consistent. [laughs]
From there, it fell apart when people were like, "Well, wait a second. My Amazon's different then your Amazon. I want to do...these other clouds are totally different than that. They don't have anything that works like that."
What we see is, the collaborating around an operational strategy gets really hard as soon as the details of the operational system hit. To the point where people can't collaborate on the ops stuff at all.
Gordon: Yeah, it's definitely challenging. That's one of the things we're still trying to work out as part of this. Speaking of OpenStack, we're working closely with OpenInfra Labs on this project. It's definitely challenging. I think it's something that we need to get to though. There are tools out there. You mentioned Terraform I think when we were discussing this, for example.
Rob: This is for us trying to...I like where you're going because open source to me is about collaboration. Fundamentally, we're trying to work together so that we're not repeating work that we're able to build things together.
When I look at something like Terraform which is very focused on provisioning against a YAML file. The providers are reusable, but the Terraform plans aren't. There's two levels of collaboration here. There's collaboration in the industry which we want to have, and there's also just collaboration inside of your organization in your teams.
That's one of the things I always appreciated with open source and the open source revolution where we really started focusing on Git, and code reviews, and pull requests and that process which has really become standardized in industry which is amazing.
People forget how much that's an open source creation. The need to do all these code reviews and merges. We need to figure out how to apply that into the Infrastructure as a Code conversations.
I've seen a lot of people get excited about GitOps. To me, GitOps that's not really the same thing. It's not as Infrastructure as a Code as you're building a CI/CD pipeline for your automation, or being able to have teams reuse parts of that automation stack or even better delegate parts of that delegation, or that stack so that the Ops team can focus on something that the Dev team can focus on something just like a CI/CD pipeline, would put those pieces together.
That's right, that sharing of concerns is really, I think, part of what we're talking about in the open source collaboration model.
Gordon: Yeah, what a very powerful thing. I don't think people really thought about open source in this way at the beginning, but it's really come to be to a large degree about the open source development model, creating, in many cases, enterprise software using an open source development model.
We don't have an open source operations model with that same virtuous circle of projects, products, profits, feeding back into the original community; that's stolen from Jim Zemlin from the Linux Foundation.
I think you want to create that same virtuous cycle around operations. In fact I think it was at the Linux Foundation member summit. There was a very elaborate version of that virtuous cycle for open source development, and operations was not mentioned once in that entire slide.
Rob: This, to me, is where it's why we focus on trying to create that virtuous cycle around operations. It really does come back to thinking through the complexity cycle. When we think about how do you prime the pump and have, people even within an organization sharing operational components, and let alone feeding it back into a community and having them be able to take advantage of that.
I should be specific. Ansible has this huge library, the galaxy of all these playbooks, but it has a copy. In some cases, hundreds of copies of the same playbook. [laughs] Because the difference is this is where the complexity comes in between one person's thing and another person's thing are enough to break it.
That complexity, and sometimes, I think, people don't want to invest in solving the complexity problem to make that work. You have to be willing to say, it's simpler for me to ignore all that stuff, and write my own custom playbook or Terraform template or something like that. From us building this virtuous cycle, you've already broken the cycle as soon as you do that.
You have to look at not eliminating the complexity but managing it. Defining, for us, we spend a lot of time with definable parameters.
When we put something through an infrastructure pipeline, the parameters are actually defined and immutable part of that input because that creates a system that lets things move forward and can be discovered. I think that this is where you sit back, and you're like, "OK, the fastest, most expedient thing for me in Ops might be not managing the complexity that somebody else could pick up."
Gordon: Yeah, I think there's a certain aspect of tradition. The way things are often done in Ops, is you've traditionally hack together a script that solved a particular problem and went on with the rest of your day rather than sitting down and generalizing and working with other people.
I'm sure there's exceptions to that at some of the large scale companies out there. It definitely is historically, how things tended to happen.
Rob: There's two things that we see driving this. One of them is not accepting that heterogeneity is part of life. When you look at a script, you're like, "OK, I can eliminate a whole bunch of code generally seen as a good thing."
By ignoring all these edge cases, that somebody else injected in there. Those things exist for a reason. Even if you don't care about the server, the vendor, or the Cloud that you're dealing with, it's smart to try and figure out how that works so that you can keep it in because that keeps the code better from that perspective.
Then there's another piece to it, where, as we connect these pieces together, we actually need to be aware that they have to hand off and connect to things. The other mistake I've seen people make in a complexity management perspective is assuming their task is the only task.
I see this a lot when we look at end to end provisioning flows, is that like configuration tasks are different than provisioning tasks, which are different than monitoring tasks which are different than orchestration. You have to understand that they're usually intermixed in building a system well, but they are different operational components.
You might have to make something that's less efficient or harder, or has more edge cases, in one case, to do a better job interacting with the next thing down. I'm thinking through how this translates in open source more generally. Do you want to add something to that?
Gordon: No, I think one of the things we've struggled with around Operate First and similar type of work is turning this into what we can concretely do going forward. I'm curious maybe in closing out what some of your thoughts are. What are some main next steps for the industry for operations, communities over the next year or so?
Rob: We've gotten really excited about this generalized idea of an infrastructure pipeline because it's letting us talk about Infrastructure as a Code beyond the get an YAML discussion and talk about how do we connect together all of these operations.
When we think about collaboration here, what we're really looking at is getting people out of the individual step of that pipeline conversation and start thinking about how things connect together in the pipeline.
It's a nice analogy back to the CI/CD revolution from five or six years ago, where people would be like,
"Oh, CI/CD pipelines are too hard for me to build, it's all this stuff, and I'm gonna deploy 100 times a day like they do in the..." At the end of the day, you don't have to look at it that way at first.
The goal is to be doing daily deployments, and every commit goes to production and things like that. The first thing you just need to do is start connecting two adjacent pieces together in a repeatable way. That means a lot of times to teams collaborating together, or it means, you being able to abstract out the difference between different Cloud types or hardware types or operating system types.
That's what I hope people start thinking about is, how do we connect together a couple of links in this infrastructure pipeline chain.
The reason why I'm so focused on that, is because if you can connect those links together, you've actually managed the complexity of the system. In some cases, what you've done is you've made it so that the tools that you're using focus on doing what they do well.
One of the things in ops that I find really trips people out is when they use a tool outside of its scope. [laughs] Using a tool for something that it's not designed for, often causes a lot of complexity. This is right. You can do it.
Sometimes that adds a lot of complexity because the tool wasn't designed for that and you're going to run it into a fragile state or you're going to have to do weird things to it. This lets you say, "All right, this tool works really well. At this stage, I hand off to the next stage, I hand off to the next stage."
It's more complex, maybe to build a pipeline that does that. Individual components of the pipeline are actually then simpler. The connections between things now that they're exposed have also reduced the complexity, the complexity budget in your system, by working on those interconnects.
The way I think about that is a coupling perspective and thinking about coupling.
Gordon: Great. That's probably a good point to end on. Anything you'd like to add?
Rob: No, this was fantastic. It's exactly the topic that I've been hoping to have around managing complexity and thinking about it from a community perspective. I appreciate you opening up the mic so that we could talk about it. It's a really important topic.
Gordon: Thanks, Rob. Enjoy the holidays.
Rob: Thanks, Gordon. It's been a pleasure.
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