Server Monitoring Authors: Liz McMillan, Carmen Gonzalez, Ken Schwaber, JP Morgenthal, Pat Romanski

Related Topics: @DevOpsSummit, Microservices Expo, Containers Expo Blog

@DevOpsSummit: Blog Post

Characterizing and Contrasting Container Orchestrators | @DevOpsSummit #DevOps #Containers

There is no one perfect solution

Admiral Calcote - also known as Lee Calcote (@lcalcote) or the Ginger Geek to his friends - gave a presentation entitled Characterizing and Contrasting Container Orchestrators at the 2016 All Day DevOps conference.

Okay, he isn't really an admiral - nor does anyone call him that - but he used the title admiral to describe what container orchestrators do, relating it to an admiral directing a fleet of container ships. You could also say that they are like the conductor of an orchestra, directing the individuals to work together as a group toward a common goal while each musician is still able to play their own instrument.


Lee is the Head of Technology Strategy at SolarWinds, and for his talk, he walked through four open-source container orchestrators: Nomad, Swarm, Kubernetes, and Mesos-Marathon.

He emphasized the obvious - there is no one perfect solution. Each organization is different, so for each solution, he looked at:

  • Genesis and purpose
  • Support and momentum
  • Host and service discovery
  • Scheduling
  • Modularity and extensibility
  • Updates and maintenance
  • Health monitoring
  • Networking and load balancing
  • Secrets management
  • High availability and scale

Lee noted that while there are many core capabilities, any orchestrator must have cluster management and scheduling.


He then dove deeper into the four solutions. Below are summaries (the full talk is chalked full of information and is online here):


  • Designed for both long-lived and short-lived batch processing workloads
  • Cluster manager with declarative job specifications
  • Ensures constraints are satisfied and resource utilization is optimized by efficient task packing
  • Supports all major OSs and workloads
  • Written in Go and with a Unix philosophy
  • Host discovery: Gossip protocol - Serf is used; servers advertise full set of Nomad servers to clients; creating federated clusters is simple
  • Service discovery: Integrates with Consul
  • Scheduling: two distinct phases - feasibility checking and ranking; optimistically concurrent; three scheduler types when creating jobs
  • Uses task drivers to execute a task and provide resource isolation, but it does not support pluggable task drivers
  • Built for managing multiple clusters/cluster federation


Docker Swarm 1.12

  • Simple and easy to setup
  • Architecture is not as complex as Kubernetes and Mesos
  • Written in Go - lightweight, modular, and extensible
  • Strong community support
  • Host discovery: used in the formation of clusters by the Manager to discover Nodes (hosts); pull model - worker checks-in with the Manager
  • Service discovery: Embedded DNS and round robin load-balancing
  • Scheduler is pluggable and is a combination of strategies and filters/constraints
  • Ability to remove "batteries"
  • Rolling updates are supported
  • Managers may be deployed in a highly-available configuration, but does not support multiple failure isolation regions or federation



  • An opinionated framework for building distributed systems
  • Written in Go and is lightweight, modular, and extensible
  • Led by Google, Red Hat, and others
  • Young - about two-years-old
  • Robust documentation and community
  • Scheduling is handled by kube-scheduler
  • Pluggable architecture and an extensible platform
  • Choice of: database for service discovery or network driver and container runtime
  • Supports rolling back deployments, automating deployments and rolling updating applications
  • Inherent load balancing
  • Uses Pods, an atomic unit of scheduling. Each pod has its own IP address, no NAT required, and intra-pod communication via localhost



  • Mesos is a distributed systems kernel
  • Mesos has been around the longest (since 2009)
  • Mesos is written in C++
  • Marathon is a framework that runs on top of Mesos
  • Mesos is used by Twitter, AirBnB, eBay, Apple, Cisco, and Yodle
  • Marathon is used by Verizon and Samsung
  • Mesos-DNS generates an SRV record for each Mesos task
  • Marathon ensures that all dynamically assigned ports are unique


Wrapping up, Lee provided the following overview comparing the different container orchestration solutions.


Lee packed a tremendous amount of information into his talk. If you use containers, his talk is worth your time and is available online here. If you missed any of the other 30-minute long presentations from All Day DevOps, they are easy to find and available free-of-charge here.  Finally, be sure to register you and the rest of your team for the 2017 All Day DevOps conference here.  This year's event will offer 96 practitioner-led sessions (no vendor pitches allowed).  It's all free and online on October 24th.

More Stories By Derek Weeks

In 2015, Derek Weeks led the largest and most comprehensive analysis of software supply chain practices to date across 160,000 development organizations. He is a huge advocate of applying proven supply chain management principles into DevOps practices to improve efficiencies, reduce costs, and sustain long-lasting competitive advantages.

As a 20+ year veteran of the software industry, he has advised leading businesses on IT performance improvement practices covering continuous delivery, business process management, systems and network operations, service management, capacity planning and storage management. As the VP and DevOps Advocate for Sonatype, he is passionate about changing the way people think about software supply chains and improving public safety through improved software integrity. Follow him here @weekstweets, find me here www.linkedin.com/in/derekeweeks, and read me here http://blog.sonatype.com/author/weeks/.

@ThingsExpo Stories
"There's plenty of bandwidth out there but it's never in the right place. So what Cedexis does is uses data to work out the best pathways to get data from the origin to the person who wants to get it," explained Simon Jones, Evangelist and Head of Marketing at Cedexis, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Digital Transformation and Disruption, Amazon Style - What You Can Learn. Chris Kocher is a co-founder of Grey Heron, a management and strategic marketing consulting firm. He has 25+ years in both strategic and hands-on operating experience helping executives and investors build revenues and shareholder value. He has consulted with over 130 companies on innovating with new business models, product strategies and monetization. Chris has held management positions at HP and Symantec in addition to ...
Enterprises have taken advantage of IoT to achieve important revenue and cost advantages. What is less apparent is how incumbent enterprises operating at scale have, following success with IoT, built analytic, operations management and software development capabilities - ranging from autonomous vehicles to manageable robotics installations. They have embraced these capabilities as if they were Silicon Valley startups.
In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect at GE, and Ibrahim Gokcen, who leads GE's advanced IoT analytics, focused on the Internet of Things / Industrial Internet and how to make it operational for business end-users. Learn about the challenges posed by machine and sensor data and how to marry it with enterprise data. They also discussed the tips and tricks to provide the Industrial Internet as an end-user consumable service using Big Data Analytics and Industrial C...
René Bostic is the Technical VP of the IBM Cloud Unit in North America. Enjoying her career with IBM during the modern millennial technological era, she is an expert in cloud computing, DevOps and emerging cloud technologies such as Blockchain. Her strengths and core competencies include a proven record of accomplishments in consensus building at all levels to assess, plan, and implement enterprise and cloud computing solutions. René is a member of the Society of Women Engineers (SWE) and a m...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...
DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City. Digital Transformation (DX) is a major focus with the introduction of DXWorldEXPO within the program. Successful transformation requires a laser focus on being data-driven and on using all the tools available that enable transformation if they plan to survive over the long term.
To Really Work for Enterprises, MultiCloud Adoption Requires Far Better and Inclusive Cloud Monitoring and Cost Management … But How? Overwhelmingly, even as enterprises have adopted cloud computing and are expanding to multi-cloud computing, IT leaders remain concerned about how to monitor, manage and control costs across hybrid and multi-cloud deployments. It’s clear that traditional IT monitoring and management approaches, designed after all for on-premises data centers, are falling short in ...
With privacy often voiced as the primary concern when using cloud based services, SyncriBox was designed to ensure that the software remains completely under the customer's control. Having both the source and destination files remain under the user?s control, there are no privacy or security issues. Since files are synchronized using Syncrify Server, no third party ever sees these files.
Cloud-enabled transformation has evolved from cost saving measure to business innovation strategy -- one that combines the cloud with cognitive capabilities to drive market disruption. Learn how you can achieve the insight and agility you need to gain a competitive advantage. Industry-acclaimed CTO and cloud expert, Shankar Kalyana presents. Only the most exceptional IBMers are appointed with the rare distinction of IBM Fellow, the highest technical honor in the company. Shankar has also receive...
In his session at 21st Cloud Expo, Carl J. Levine, Senior Technical Evangelist for NS1, will objectively discuss how DNS is used to solve Digital Transformation challenges in large SaaS applications, CDNs, AdTech platforms, and other demanding use cases. Carl J. Levine is the Senior Technical Evangelist for NS1. A veteran of the Internet Infrastructure space, he has over a decade of experience with startups, networking protocols and Internet infrastructure, combined with the unique ability to it...
"Cloud Academy is an enterprise training platform for the cloud, specifically public clouds. We offer guided learning experiences on AWS, Azure, Google Cloud and all the surrounding methodologies and technologies that you need to know and your teams need to know in order to leverage the full benefits of the cloud," explained Alex Brower, VP of Marketing at Cloud Academy, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clar...
Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settlement products to hedge funds and investment banks. After, he co-founded a revenue cycle management company where he learned about Bitcoin and eventually Ethereal. Andrew's role at ConsenSys Enterprise is a mul...
Internet-of-Things discussions can end up either going down the consumer gadget rabbit hole or focused on the sort of data logging that industrial manufacturers have been doing forever. However, in fact, companies today are already using IoT data both to optimize their operational technology and to improve the experience of customer interactions in novel ways. In his session at @ThingsExpo, Gordon Haff, Red Hat Technology Evangelist, shared examples from a wide range of industries – including en...
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Rodrigo Coutinho is part of OutSystems' founders' team and currently the Head of Product Design. He provides a cross-functional role where he supports Product Management in defining the positioning and direction of the Agile Platform, while at the same time promoting model-based development and new techniques to deliver applications in the cloud.
DevOpsSummit New York 2018, colocated with CloudEXPO | DXWorldEXPO New York 2018 will be held November 11-13, 2018, in New York City. Digital Transformation (DX) is a major focus with the introduction of DXWorldEXPO within the program. Successful transformation requires a laser focus on being data-driven and on using all the tools available that enable transformation if they plan to survive over the long term. A total of 88% of Fortune 500 companies from a generation ago are now out of bus...
delaPlex is a global technology and software development solutions and consulting provider, deeply committed to helping companies drive growth, revenue and marketplace value. Since 2008, delaPlex's objective has been to be a trusted advisor to its clients. By redefining the outsourcing industry's business model, the innovative delaPlex Agile Business Framework brings an unmatched alliance of industry experts, across industries and functional skillsets, to clients anywhere around the world.
Business professionals no longer wonder if they'll migrate to the cloud; it's now a matter of when. The cloud environment has proved to be a major force in transitioning to an agile business model that enables quick decisions and fast implementation that solidify customer relationships. And when the cloud is combined with the power of cognitive computing, it drives innovation and transformation that achieves astounding competitive advantage.
Headquartered in Plainsboro, NJ, Synametrics Technologies has provided IT professionals and computer systems developers since 1997. Based on the success of their initial product offerings (WinSQL and DeltaCopy), the company continues to create and hone innovative products that help its customers get more from their computer applications, databases and infrastructure. To date, over one million users around the world have chosen Synametrics solutions to help power their accelerated business or per...