Docker Swarm vs OKD

Docker Swarm is an open-source, free orchestration mode built into Docker Engine for managing clusters of Docker daemons in production. It is controlled through the Docker CLI and needs no separate orchestration software. Managers maintain a declarative desired state covering replica counts, networks, storage resources, and exposed ports. Services can be replicated across selected nodes or run globally with one task on every node. Overlay networks connect daemons, while an ingress network provides load balancing. Swarm assigns DNS names and supports virtual-IP load balancing or DNS round-robin discovery. Updates can roll out incrementally and roll back to an earlier service version. Nodes authenticate and encrypt communications with mutual TLS, requiring at least TLS 1.2. Overlay application traffic is not encrypted by default; IPsec encryption can reduce performance. Swarm is self-hosted, supports rolling updates and policy controls, and lacks multi-cluster management and autoscaling.

OKD is a free, self-hosted Kubernetes platform for managing applications and clusters at scale. It extends Kubernetes with more than 100 preinstalled Operators and includes a web console, authentication, image registry and tooling, monitoring, networking, node configuration and upgrades, and Operator management. Cluster nodes run an immutable operating system managed through cluster APIs. OKD states that it is 100% compliant with Kubernetes, with additional patches for some advanced features, and its defaults include hardened configuration. The platform supports autoscaling, rolling updates, and policy controls. Installation works on bare metal, virtualization platforms, and cloud platforms, using installer-provisioned or user-provisioned infrastructure. Integrated deployments cover areas such as GitOps, service mesh, virtualization, and storage. Downloads include stable releases and nightly builds for installer and client tools. The installation guide provides signed-checksum verification instructions; its examples cover Linux and macOS client and installer archives and Windows client archives. OKD directs users to Kubernetes Slack’s #okd-dev channel and a Google Group. It describes uses for technologists, students, and OpenShift contributors and partners.