Welcome!

@DevOpsSummit Authors: Liz McMillan, Elizabeth White, Yeshim Deniz, Jason Bloomberg, Pat Romanski

Related Topics: @DevOpsSummit, Recurring Revenue, Artificial Intelligence

@DevOpsSummit: Blog Post

How to Ditch Scheduled Maintenance By @PagerDuty | @DevOpsSummit [#DevOps]

Scheduled maintenance tends to take place late at night on weekends—a tough proposition for operations engineers and admins

How to Ditch Scheduled Maintenance

By Julie Arsenault

You like sleep and weekends. Customers hate losing access to your system due to maintenance. PagerDuty operations engineer Doug Barth has the solution:

Ditch scheduled maintenance altogether.

That sounds like a bold proposition. But as Doug explained at DevOps Days Chicago, it actually makes a lot of sense.

Scheduled maintenance tends to take place late at night on weekends-a tough proposition for operations engineers and admins. Customers require access at all hours, not just daylight ones. And scheduled maintenance implies your system is less reliable than you think, because you're afraid to change it during the workday.

The solution? Avoid it altogether, and replace it with fast, iterative maintenance strategies that don't compromise your entire system.

That might sound a bit ‘out there.' But shelving scheduled maintenance is easier than you think. In his talk, Doug offered four ways to do it.

Deploy in stages

First thing's first: if you discard scheduled maintenance, your deployments need to be rock-solid. They should be scripted, fast and rolled back quickly, as well as tested periodically to ensure rollbacks don't lag.

They also need to be forward and backward compatible by one version. It's not an option to stop the presses when you push out a new version. Red-blue-green deployments are crucial here, as they ensure only a third of your infrastructure undergoes changes at any given time.

Lastly, stateless apps must be the norm. You should be able to reboot an app without any effect on the customer (like forced logouts or lost shopping carts).

Send canaries into the coal mine

Use canary deploys judiciously to test rollouts, judge their integrity and compare results. These test deployments affect only a small segment of your system, so bad code or an unexpected error doesn't spell disaster for your entire service.

Doug suggested a few practical ways to accomplish this:

  • Gate features so you can put out code dark and slowly apply new features to a subset of customers.
  • Find ways to slowly bleed traffic over from one system to another, to reduce risk from misconfiguration or cold infrastructure.
  • Run critical path code on the side. Execute it and log errors, but don't depend on it right away.

As Doug summed it up for the DevOps Days crowd: "Avoid knife-edge changes like the plague."

Make retries your new best friend

Your system should be loaded with retries. Build them into all service layer hops, and use exponential backoffs to avoid overwhelming the downstream system. The requests between service layers must be idempotent, Doug emphasized. When they are, you'll be able to reissue requests to new servers without double-applying changes.

Use queues where you don't care about the response to decouple the client from the server. If you're stuck with a request/response flow, use a circuit breaker approach, where your client library delivers back minimal results if a service is down-reducing front-end latency and errors.

Don't put all of your eggs in one basket

Distribute your data to many servers, so that no one server is so important you can't safely work on it.

At PagerDuty, the team uses multi-master clusters, which help with operations and vertical scaling. They also use multiple database servers like Cassandra: No one server is that special, which means operational work can happen during the day.

Put together, these strategies help admins and operational engineers sleep more, worry less and maintain better-all ahead of schedule.

Questions? Share your thoughts in the comments below.

The post How to Ditch Scheduled Maintenance appeared first on PagerDuty Blog.

Read the original blog entry...

More Stories By PagerDuty Blog

PagerDuty’s operations performance platform helps companies increase reliability. By connecting people, systems and data in a single view, PagerDuty delivers visibility and actionable intelligence across global operations for effective incident resolution management. PagerDuty has over 100 platform partners, and is trusted by Fortune 500 companies and startups alike, including Microsoft, National Instruments, Electronic Arts, Adobe, Rackspace, Etsy, Square and Github.

@DevOpsSummit Stories
DevOps at Cloud Expo, taking place October 31 - November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 21st Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce software that is obsolete at launch. DevOps may be disruptive, but it is essential.
The current age of digital transformation means that IT organizations must adapt their toolset to cover all digital experiences, beyond just the end users’. Today’s businesses can no longer focus solely on the digital interactions they manage with employees or customers; they must now contend with non-traditional factors. Whether it's the power of brand to make or break a company, the need to monitor across all locations 24/7, or the ability to proactively resolve issues, companies must adapt to the new world.
SYS-CON Events announced today that Cloud Academy named "Bronze Sponsor" of 21st International Cloud Expo which will take place October 31 - November 2, 2017 at the Santa Clara Convention Center in Santa Clara, CA. Cloud Academy is the industry’s most innovative, vendor-neutral cloud technology training platform. Cloud Academy provides continuous learning solutions for individuals and enterprise teams for Amazon Web Services, Microsoft Azure, Google Cloud Platform, and the most popular cloud computing technologies. Get certified, manage the full lifecycle of your cloud-based resources, and build your knowledge based using Cloud Academy’s expert-created content, comprehensive Learning Paths, and innovative Hands-on Labs.
Cloud Expo, Inc. has announced today that Andi Mann and Aruna Ravichandran have been named Co-Chairs of @DevOpsSummit at Cloud Expo Silicon Valley which will take place Oct. 31-Nov. 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. "DevOps is at the intersection of technology and business-optimizing tools, organizations and processes to bring measurable improvements in productivity and profitability," said Aruna Ravichandran, vice president, DevOps product and solutions marketing, CA Technologies. "It's this results-driven combination of technology and business that makes me so passionate about DevOps and its future in the industry. I am truly honored to take on this co-chair role, and look forward to working with the DevOps Summit team at Cloud Expo and attendees to advance DevOps."
SYS-CON Events announced today that Enzu will exhibit at SYS-CON's 21st Int\ernational Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Enzu’s mission is to be the leading provider of enterprise cloud solutions worldwide. Enzu enables online businesses to use its IT infrastructure to their competitive advantage. By offering a suite of proven hosting and management services, Enzu wants companies to focus on the core of their online business and let Enzu manage their IT hosting infrastructure.
SYS-CON Events announced today that IBM has been named “Diamond Sponsor” of SYS-CON's 21st Cloud Expo, which will take place on October 31 through November 2nd 2017 at the Santa Clara Convention Center in Santa Clara, California.
In the world of DevOps there are ‘known good practices’ – aka ‘patterns’ – and ‘known bad practices’ – aka ‘anti-patterns.' Many of these patterns and anti-patterns have been developed from real world experience, especially by the early adopters of DevOps theory; but many are more feasible in theory than in practice, especially for more recent entrants to the DevOps scene. In this power panel at @DevOpsSummit at 18th Cloud Expo, moderated by DevOps Conference Chair Andi Mann, panelists discussed the patterns and anti-patterns of DevOps, and what it means to ‘do the right thing’ in a DevOps way, but in the real world.
SYS-CON Events announced today that CA Technologies has been named "Platinum Sponsor" of SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. CA Technologies helps customers succeed in a future where every business - from apparel to energy - is being rewritten by software. From planning to development to management to security, CA creates software that fuels transformation for companies in the application economy. With CA software at the center of their IT strategy, organizations can leverage the technology that changes the way we live - from the data center to the mobile device. CA's software and solutions help customers thrive in the new application economy by delivering the means to deploy, monitor and secure their applications and infrastructure.
Both SaaS vendors and SaaS buyers are going “all-in” to hyperscale IaaS platforms such as AWS, which is disrupting the SaaS value proposition. Why should the enterprise SaaS consumer pay for the SaaS service if their data is resident in adjacent AWS S3 buckets? If both SaaS sellers and buyers are using the same cloud tools, automation and pay-per-transaction model offered by IaaS platforms, then why not host the “shrink-wrapped” software in the customers’ cloud? Further, serverless computing, cloud marketplaces and DevOps are changing the economics of hosting and delivering software.
Wooed by the promise of faster innovation, lower TCO, and greater agility, businesses of every shape and size have embraced the cloud at every layer of the IT stack – from apps to file sharing to infrastructure. The typical organization currently uses more than a dozen sanctioned cloud apps and will shift more than half of all workloads to the cloud by 2018. Such cloud investments have delivered measurable benefits. But they’ve also resulted in some unintended side-effects: complexity and risk. End users now struggle to navigate multiple environments with varying degrees of performance. Companies are unclear on the security of their data and network access. And IT squads are overwhelmed trying to monitor and manage it all.
It is ironic, but perhaps not unexpected, that many organizations who want the benefits of using an Agile approach to deliver software use a waterfall approach to adopting Agile practices: they form plans, they set milestones, and they measure progress by how many teams they have engaged. Old habits die hard, but like most waterfall software projects, most waterfall-style Agile adoption efforts fail to produce the results desired. The problem is that to get the results they want, they have to change their culture and cultures are very hard to change. To paraphrase Peter Drucker, "culture eats Agile for breakfast." Successful approaches are opportunistic and leverage the power of self-organization to achieve lasting change.
"We are a monitoring company. We work with Salesforce, BBC, and quite a few other big logos. We basically provide monitoring for them, structure for their cloud services and we fit into the DevOps world" explained David Gildeh, Co-founder and CEO of Outlyer, in this SYS-CON.tv interview at DevOps Summit at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
In 2014, Amazon announced a new form of compute called Lambda. We didn't know it at the time, but this represented a fundamental shift in what we expect from cloud computing. Now, all of the major cloud computing vendors want to take part in this disruptive technology. In his session at 20th Cloud Expo, Doug Vanderweide, an instructor at Linux Academy, discussed why major players like AWS, Microsoft Azure, IBM Bluemix, and Google Cloud Platform are all trying to sidestep VMs and containers with heavy investments in serverless computing, when most of the industry has its eyes on Docker and containers.
"When we talk about cloud without compromise what we're talking about is that when people think about 'I need the flexibility of the cloud' - it's the ability to create applications and run them in a cloud environment that's far more flexible,” explained Matthew Finnie, CTO of Interoute, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
While DevOps most critically and famously fosters collaboration, communication, and integration through cultural change, culture is more of an output than an input. In order to actively drive cultural evolution, organizations must make substantial organizational and process changes, and adopt new technologies, to encourage a DevOps culture. Moderated by Andi Mann, panelists discussed how to balance these three pillars of DevOps, where to focus attention (and resources), where organizations might slip up with the wrong focus, how to manage change and risk in all three areas, what is possible and what is not, where to start, and especially how new structures, processes, and technologies can help drive a new DevOps culture.
New competitors, disruptive technologies, and growing expectations are pushing every business to both adopt and deliver new digital services. This ‘Digital Transformation’ demands rapid delivery and continuous iteration of new competitive services via multiple channels, which in turn demands new service delivery techniques – including DevOps. In this power panel at @DevOpsSummit 20th Cloud Expo, moderated by DevOps Conference Co-Chair Andi Mann, panelists examined how DevOps helps to meet the demands of Digital Transformation – including accelerating application delivery, closing feedback loops, enabling multi-channel delivery, empowering collaborative decisions, improving user experience, and ultimately meeting (and exceeding) business goals.
After more than five years of DevOps, definitions are evolving, boundaries are expanding, ‘unicorns’ are no longer rare, enterprises are on board, and pundits are moving on. Can we now look at an evolution of DevOps? Should we? Is the foundation of DevOps ‘done’, or is there still too much left to do? What is mature, and what is still missing? What does the next 5 years of DevOps look like? In this Power Panel at DevOps Summit, moderated by DevOps Summit Conference Chair Andi Mann, panelists looked back at what DevOps has become, and forward at what it might create next.
@DevOpsSummit at Cloud Expo taking place Oct 31 - Nov 2, 2017, at the Santa Clara Convention Center, Santa Clara, CA, is co-located with the 21st International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce software that is obsolete at launch. DevOps may be disruptive, but it is essential.
What's the role of an IT self-service portal when you get to continuous delivery and Infrastructure as Code? This general session showed how to create the continuous delivery culture and eight accelerators for leading the change. Don Demcsak is a DevOps and Cloud Native Modernization Principal for Dell EMC based out of New Jersey. He is a former, long time, Microsoft Most Valuable Professional, specializing in building and architecting Application Delivery Pipelines for hybrid legacy, and cloud native applications.
For organizations that have amassed large sums of software complexity, taking a microservices approach is the first step toward DevOps and continuous improvement / development. Integrating system-level analysis with microservices makes it easier to change and add functionality to applications at any time without the increase of risk. Before you start big transformation projects or a cloud migration, make sure these changes won’t take down your entire organization.
21st International Cloud Expo, taking place October 31 - November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some form of XaaS – software, platform, and infrastructure as a service.
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend 21st Cloud Expo October 31 - November 2, 2017, at the Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY, and learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
SYS-CON Events announced today that Ayehu will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on October 31 - November 2, 2017 at the Santa Clara Convention Center in Santa Clara California. Ayehu provides IT Process Automation & Orchestration solutions for IT and Security professionals to identify and resolve critical incidents and enable rapid containment, eradication, and recovery from cyber security breaches. Ayehu provides customers greater control over IT infrastructure through automation. Ayehu solutions have been deployed by major enterprises worldwide, and currently, support thousands of IT processes across the globe. The company has offices in New York, California, and Israel.
SYS-CON Events announced today that MobiDev, a client-oriented software development company, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 200 developers, designers, quality assurance engineers, project managers in house, specializing in the world-class mobile and web development.
SYS-CON Events announced today that GrapeUp, the leading provider of rapid product development at the speed of business, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Grape Up is a software company, specialized in cloud native application development and professional services related to Cloud Foundry PaaS. With five expert teams that operate in various sectors of the market across the USA and Europe, we work with a variety of customers from emerging startups to Fortune 1000 companies.