Mirantis Container Cloud (MCC) becomes part of Mirantis OpenStack for Kubernetes (MOSK)!
Starting with MOSK 25.2, the MOSK documentation set covers all product layers, including MOSK management (formerly Container Cloud). This means everything you need is in one place. Some legacy names may remain in the code and documentation and will be updated in future releases. The separate Container Cloud 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.