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How to ensure containers are connected accurately and are fully visible in a microservices world

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CUMULUS NETWORKS: ThE gROWTh & ChaLLENgES WiTh CONTaiNERS 1 CUMULUS NETWORKS — SOLUTION BRIEF How to ensure containers are connected accurately and are fully visible in microservices world The growth & challenges with containers Container technology is all the rage in the CD/DevOps world. Nearly 70% of the companies queried in a Portworx 2017 container adoption survey invested financially in containers at some level in 2017, leaping from 52% in 2016. 451 Research predicts containers will see grow to become a $2.7BN market by 2020. That's 3.5 times greater than the $762 million container market in 2016, with a CAGR of 40%. The popularity of these Linux-based containers stems from their ability to dramatically improve flexibility when running cloud-native applications on physical and virtual infrastructure. Containers bundle up the services encompassing an application and make them portable across different compute environments, for both dev/test and production use. With containers, organizations can quickly ramp application instances to match spikes in demand, as well as run all kinds of different applications in a variety of different environments. Yet with all their benefits for speed and efficiency, they can cause major challenges to network operators. Containers are complex because they are ephemeral, and keeping track of their IP address can be a huge headache. Additionally, container deployments are often owned by a separate group outside of network operations, which further adds to the tracking complexity. According to Gartner, multi-host networking is important because "the portability and ephemeral life cycle of containers will overwhelm the traditional networking stack. The native container networking stack doesn't have robust access and policy management capabilities" 1 It is up to the network teams to track container identity to ensure they are deployed in the appropriate security zone, mapped to the correct port, and getting the bandwidth they require. If there is an issue or outage, there is no easy way to find out if the issue is something to do with the container or something else in the network. Basically, network operation teams need intelligent systems to ensure containers are connected accurately and are fully visible. 1 Gartner, Best Practices for Running Containers in Production, Arun Chandrasekaran and Dennis Smith, July 25, 2017, document # G00324503.

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