Kubernetes lifecycle management¶
The Kubernetes lifecycle management (LCM) engine in Mirantis Container Cloud consists of the following components:
- LCM controller
Responsible for all LCM operations. Consumes the LCMCluster object and orchestrates actions through LCM agent.
- LCM agent
Relates only to Mirantis Kubernetes Engine (MKE) clusters deployed using Container Cloud, and is not used for attached MKE clusters. Runs on the target host. Executes Ansible playbooks in headless mode.
- Helm controller
Responsible for the lifecycle of the Helm charts. It is installed by LCM controller and interacts with Tiller.
The Kubernetes LCM components handle the following custom resources:
The following diagram illustrates handling of the LCM custom resources by
the Kubernetes LCM components. On a managed cluster,
apiserver handles multiple Kubernetes objects,
for example, deployments, nodes, RBAC, and so on.