Mirantis Container Cloud (MCC) becomes part of Mirantis OpenStack for Kubernetes (MOSK)!
Starting with MOSK 25.2, the MOSK documentation set will cover all product layers, including MOSK management (formerly MCC). This means everything you need will be in one place. The separate MCC documentation site will be retired, so please update your bookmarks for continued easy access to the latest content.
Kubernetes underlay¶
The Kubernetes lifecycle management (LCM) engine in MOSK consists of the following components:
- LCM Controller
Responsible for all LCM operations. Consumes the
LCMCluster
object and orchestrates actions through LCM Agent.- LCM Agent
Runs on the target host. Executes Ansible playbooks in headless mode.
- Helm Controller
Responsible for the Helm charts life cycle, is installed by the provider as a Helm v3 chart.
The Kubernetes LCM components handle the following custom resources:
LCMCluster
LCMMachine
HelmBundle
The following diagram illustrates handling of the LCM custom resources by the
Kubernetes LCM components. On a MOSK cluster, apiserver
handles multiple Kubernetes objects, for example, deployments, nodes, RBAC, and
so on.

The following sections outline key components of the Kubernetes LCM engine in MOSK.