Deployment Options Comparison

Mapping Docker Swarm to Kubernetes

In terms of load balancing Kubernetes does have an Ingress controller but supports a deployed Load Balancer service, one can use an NGNIX as a load balancer.

References

• https://stackoverflow.com/questions/45079988/kubernetes-ingress-vs-load-balancer
• Table source: https://www.youtube.com/watch?v=Co3Ur-MbcYY

Investigation of deployment solutions

	Kubernetes	Docker Swarm
High availability and scalability	✔️️	✔️️
Networking	Flat network, pods communicate between one another.	A node joining the cluster creates an overalay network of services that span all the hosts in Swarm and a host only uses bridge network for containers.
Logging and monitoring	Support for ELK, Grafana, Sysdig when services deployed	3rd party applications e.g. http://riemann.io/
Docker compose compatible	Works via Kompose, see Kompose Conversion matrix for features supported. e.g. links not used All containers in the same pod are accessible in Kubernetes.	Some features are not reusable in Swarm e.g. (ones we use) privileged, cap_add, devices
Volumes	Persistent Volumes	Docker Data Volumes
Auto-scaling	https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough/ and https://github.com/kubernetes/autoscaler	Auto-scaling not available out-of-the-box

References

For a full feature in depth comparison check:

• https://platform9.com/blog/kubernetes-docker-swarm-compared/

• https://torusware.com/blog/2016/09/hands-on-orchestration-docker-1-12-swarm-vs-kubernetes/

• https://vexxhost.com/blog/kubernetes-vs-docker-swarm/

• https://sebiwi.github.io/blog/kubernetes-vs-docker-volumes/

• http://blog.reactiveops.com/kubernetes-emptydir-not-the-same-as-dockers-volumes-from

• https://stackoverflow.com/questions/41668621/how-to-configure-autoscaling-on-docker-swarm

• https://www.upcloud.com/blog/docker-swarm-vs-kubernetes/

• Kompose Conversion matrix provides a good reference for some of the features available in Kubernetes