Rancher is a container management platform. It is also open source. It helps to deploy and maintain containers for any organization. Rancher is merely a deployment server that is installed on any Linux machine or cluster. So to use Rancher, we should first start the Rancher container, and this requires Docker to be available.
Once started, we can log in to Rancher and start deploying our applications. It also has role management. Rancher provides an option to choose between Swarm, Kubernetes, or Cattle (and other cluster deployment options). It also provides details about the infrastructure and applications that are deployed. It shows detailed information about the containers, registries, data pools, and other information (related to the container and infrastructure).
It also provides options to tweak the Kubernetes or Swarm settings as needed, so it makes it much easier to scale up and down. It also provides options to launch the entire application stack via its UI or using docker-compose.yml and rancher-compose.yml. It also has the capability to load the external services and use them (such as a load balancer).
JHipster also provides Rancher deployment files as a separate sub-generator. We can generate them by running jhipster rancher and answering the questions as needed. This will generate the Rancher configuration files.