Open Source Cloud Authors: Liz McMillan, Elizabeth White, Mehdi Daoudi, Jason Bloomberg, Yeshim Deniz

Related Topics: @DevOpsSummit, Open Source Cloud, @CloudExpo

@DevOpsSummit: Blog Post

What Is the Docker Stats API? By @TrevParsons | @DevOpsSummit [#DevOps]

Containerization and microservices are changing how development and operations teams design, build and monitor systems

Containerization and micro-services are changing how development and operations teams design, build and monitor systems. Containerization of environments regularly results in systems with large numbers of dynamic and ephemeral instances that autoscale to meet demands on system load. In fact, it's not uncommon to see thousands of container instances, where once there were hundreds of (cloud) server instances, where once there were tens of physical servers,

From a monitoring perspective this means it's even more difficult to understand what is happening across your environment without centralized monitoring and logging. After all you can not manage what you do not monitor.


Enter the Docker stats API. The Docker stats API is part of the new docker 1.5 releaseand is an API endpoint and CLI command that will stream live resource usage information (such as CPU, memory, network IO and block IO) for your containers. The API endpoint can be used to build tools that feed live resource information for your containers into your existing monitoring solutions, or build live dashboards directly using the API.

In fact at we have built a new Docker Logentries container to plug into this endpoint to allow you to stream this data into your Logentries account, along with any Docker logs from your containers. If you want to build your own tool you can check out the source code on this github repo - it might give you some ideas. The container is also available on the Logentries Dockerhub repo. Our friends at nearfrom - leaders in the Node space, the guys behind Europe's biggest (and most fun!) node conference and avid Docker contributors (e.g. the guys behind jsChan) have helped us to develop this container (thanks Peter and Matteo!).

The Docker Logentries container works by mounting the Docker socket to consume both a stream of log data from your docker containers as well as a stream of stats from the docker stats API. The docker stats API will forward the following type of info per container:

   "read" : "2015-01-08T22:57:31.547920715Z",
   "network" : {
      "rx_dropped" : 0,
      "rx_bytes" : 648,
      "rx_errors" : 0,
      "tx_packets" : 8,
      "tx_dropped" : 0,
      "rx_packets" : 8,
      "tx_errors" : 0,
      "tx_bytes" : 648
   "memory_stats" : {
      "stats" : {
         "total_pgmajfault" : 0,
         "cache" : 0,
         "mapped_file" : 0,
         "total_inactive_file" : 0,
         "pgpgout" : 414,
         "rss" : 6537216,
         "total_mapped_file" : 0,
         "writeback" : 0,
         "unevictable" : 0,
         "pgpgin" : 477,
         "total_unevictable" : 0,
         "pgmajfault" : 0,
         "total_rss" : 6537216,
         "total_rss_huge" : 6291456,
         "total_writeback" : 0,
         "total_inactive_anon" : 0,
         "rss_huge" : 6291456,
         "hierarchical_memory_limit" : 67108864,
         "total_pgfault" : 964,
         "total_active_file" : 0,
         "active_anon" : 6537216,
         "total_active_anon" : 6537216,
         "total_pgpgout" : 414,
         "total_cache" : 0,
         "inactive_anon" : 0,
         "active_file" : 0,
         "pgfault" : 964,
         "inactive_file" : 0,
         "total_pgpgin" : 477
      "max_usage" : 6651904,
      "usage" : 6537216,
      "failcnt" : 0,
      "limit" : 67108864
   "blkio_stats" : {},
   "cpu_stats" : {
      "cpu_usage" : {
         "percpu_usage" : [
         "usage_in_usermode" : 10000000,
         "total_usage" : 36488948,
         "usage_in_kernelmode" : 20000000
      "system_cpu_usage" : 20091722000000000,
      "throttling_data" : {}

You can see that it provides a nice level of visibility across your key server resources and ultimately you can now build a specialised monitoring/logging container (as we have) to give you an easy way to collect both you container logs and metrics and to make them available in a centralized location. Collecting BOTH log data and stats in a single dashboard has the advantage of giving you a multi-dimensional view of your system and is particularly useful for troubleshooting and monitoring of your production docker environments - which has been pretty difficult to achieve up to this point.

To visualise this info you can also take advantage of the Logentries Docker Community pack which provides out of the box dashboards, alerts and tags for your stats API data - providing dashboards and alerts on per container CPU, Memory and Network trends for example.


For details on setting up the new Docker Logentries container, see our setup guide. And as always let us know what you think.

More Stories By Trevor Parsons

Trevor Parsons is Chief Scientist and Co-founder of Logentries. Trevor has over 10 years experience in enterprise software and, in particular, has specialized in developing enterprise monitoring and performance tools for distributed systems. He is also a research fellow at the Performance Engineering Lab Research Group and was formerly a Scientist at the IBM Center for Advanced Studies. Trevor holds a PhD from University College Dublin, Ireland.

@ThingsExpo Stories
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.
As IoT continues to increase momentum, so does the associated risk. Secure Device Lifecycle Management (DLM) is ranked as one of the most important technology areas of IoT. Driving this trend is the realization that secure support for IoT devices provides companies the ability to deliver high-quality, reliable, secure offerings faster, create new revenue streams, and reduce support costs, all while building a competitive advantage in their markets. In this session, we will use customer use cases...
Digital Transformation: Preparing Cloud & IoT Security for the Age of Artificial Intelligence. As automation and artificial intelligence (AI) power solution development and delivery, many businesses need to build backend cloud capabilities. Well-poised organizations, marketing smart devices with AI and BlockChain capabilities prepare to refine compliance and regulatory capabilities in 2018. Volumes of health, financial, technical and privacy data, along with tightening compliance requirements by...
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...
The best way to leverage your Cloud Expo presence as a sponsor and exhibitor is to plan your news announcements around our events. The press covering Cloud Expo and @ThingsExpo will have access to these releases and will amplify your news announcements. More than two dozen Cloud companies either set deals at our shows or have announced their mergers and acquisitions at Cloud Expo. Product announcements during our show provide your company with the most reach through our targeted audiences.
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...
With 10 simultaneous tracks, keynotes, general sessions and targeted breakout classes, @CloudEXPO and DXWorldEXPO are two of the most important technology events of the year. Since its launch over eight years ago, @CloudEXPO and DXWorldEXPO have presented a rock star faculty as well as showcased hundreds of sponsors and exhibitors! In this blog post, we provide 7 tips on how, as part of our world-class faculty, you can deliver one of the most popular sessions at our events. But before reading...
DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City and will bring together Cloud Computing, FinTech and Blockchain, Digital Transformation, Big Data, Internet of Things, DevOps, AI, Machine Learning and WebRTC to one location.
DXWorldEXPO LLC announced today that "Miami Blockchain Event by FinTechEXPO" has announced that its Call for Papers is now open. The two-day event will present 20 top Blockchain experts. All speaking inquiries which covers the following information can be submitted by email to [email protected] Financial enterprises in New York City, London, Singapore, and other world financial capitals are embracing a new generation of smart, automated FinTech that eliminates many cumbersome, slow, and expe...
DXWorldEXPO | CloudEXPO are the world's most influential, independent events where Cloud Computing was coined and where technology buyers and vendors meet to experience and discuss the big picture of Digital Transformation and all of the strategies, tactics, and tools they need to realize their goals. Sponsors of DXWorldEXPO | CloudEXPO benefit from unmatched branding, profile building and lead generation opportunities.
DXWorldEXPO LLC announced today that ICOHOLDER named "Media Sponsor" of Miami Blockchain Event by FinTechEXPO. ICOHOLDER give you detailed information and help the community to invest in the trusty projects. Miami Blockchain Event by FinTechEXPO has opened its Call for Papers. The two-day event will present 20 top Blockchain experts. All speaking inquiries which covers the following information can be submitted by email to [email protected] Miami Blockchain Event by FinTechEXPO also offers s...
With tough new regulations coming to Europe on data privacy in May 2018, Calligo will explain why in reality the effect is global and transforms how you consider critical data. EU GDPR fundamentally rewrites the rules for cloud, Big Data and IoT. In his session at 21st Cloud Expo, Adam Ryan, Vice President and General Manager EMEA at Calligo, examined the regulations and provided insight on how it affects technology, challenges the established rules and will usher in new levels of diligence arou...
Dion Hinchcliffe is an internationally recognized digital expert, bestselling book author, frequent keynote speaker, analyst, futurist, and transformation expert based in Washington, DC. He is currently Chief Strategy Officer at the industry-leading digital strategy and online community solutions firm, 7Summits.
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 ...
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...
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.
The standardization of container runtimes and images has sparked the creation of an almost overwhelming number of new open source projects that build on and otherwise work with these specifications. Of course, there's Kubernetes, which orchestrates and manages collections of containers. It was one of the first and best-known examples of projects that make containers truly useful for production use. However, more recently, the container ecosystem has truly exploded. A service mesh like Istio addr...
Predicting the future has never been more challenging - not because of the lack of data but because of the flood of ungoverned and risk laden information. Microsoft states that 2.5 exabytes of data are created every day. Expectations and reliance on data are being pushed to the limits, as demands around hybrid options continue to grow.
Poor data quality and analytics drive down business value. In fact, Gartner estimated that the average financial impact of poor data quality on organizations is $9.7 million per year. But bad data is much more than a cost center. By eroding trust in information, analytics and the business decisions based on these, it is a serious impediment to digital transformation.
Cloud Expo | DXWorld Expo have announced the conference tracks for Cloud Expo 2018. Cloud Expo will be held June 5-7, 2018, at the Javits Center in New York City, and November 6-8, 2018, at the Santa Clara Convention Center, Santa Clara, CA. Digital Transformation (DX) is a major focus with the introduction of DX Expo 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 ov...