Core Concepts & Capabilities

Declarative Control

Define the desired state which Ansible converges each host to match.

System Inventory

Every cluster and node is catalogued in structured, versioned inventory files.

Operational Security

Secrets stay in Vault so that deployments go through gated checks.

Key Capabilities

Job Scheduling & Resource Management

Configures SLURM controllers, daemons, partitions, accounting, and job submit filters across all clusters. Integrates with UNICORE for federated job submission.

Parallel Filesystems

Manages IBM Spectrum Scale (GPFS) clusters providing home, project, scratch, and data filesystems. Also handles Ceph distributed storage and NFS exports.

Network Fabric

Provisions InfiniBand (Mellanox OFED, OpenSM subnet managers) and Ethernet interfaces. Configures DNS, DHCP, firewalls, and SSH gateways.

Monitoring & Observability

Deploys a full Prometheus and Grafana stack with alerting (Alertmanager) and centralized log aggregation (Loki and Promtail).

Containers & Virtualization

Supports HPC container runtimes (Apptainer), system containers (Podman), and Kubernetes clusters for service orchestration.

Maintenance Operations

Dedicated maint.yml playbook orchestrates planned downtime: SLURM reservations, SSH banners, GPFS graceful shutdown, and status-page integration.