Deploy Swarm-only mode¶
Swarm-only mode is currently in beta, and thus you may experience issues in your use of the feature.
Swarm-only mode is an MKE configuration that supports only Swarm orchestration. Lacking Kubernetes and its operational and health-check dependencies, the resulting highly-stable application is smaller than a typical mixed-orchestration MKE installation.
You can only enable or disable swarm-only mode at the time of MKE installation. MKE preserves the swarm-only setting through upgrades, backups, and system restoration. Installing MKE in swarm-only mode pulls only the images required to run MKE in this configuration. Refer to Swarm-only images for more information.
Installing MKE in swarm-only mode removes all Kubernetes options from the web UI.
To install MKE in Swarm-only mode:
Install MKE in swarm-only mode by adding the
--swarm-onlyflag to the install command found in Install the MKE image:
docker container run --rm -it --name ucp \ -v /var/run/docker.sock:/var/run/docker.sock \ mirantis/ucp:3.4.9 install \ --host-address <node-ip-address> \ --interactive \ --swarm-only
In addition, MKE includes the
--swarm-only flag with the bootstrapper
images command, which you can use to pull or to check the
required images on manager nodes.
To restore Swarm-only clusters, invoke the ucp restore command