Ceph » Orchestrator

The current host spec provides no insights into the host that is being managed. By enriching the metadata held for a host in the inventory, the data can be exposed in the CLI and UI and also potentially help to validate daemon/service deployments

Proposed Design
1. Update cephadm check-host command
a) add a bool "gather_facts" (default=False) to trigger the metadata routine
b) add new class to handle the data gathering
c) when gather_facts is True, pass back the data to the caller
2. Update HostSpec to store the additional metadata in the inventory (just adding a metadata dict for now)
3. update mgr/cephadm
a) _add_hosts should use the gather_facts setting, and store the data in the inventory entry

The POC code just uses standard python, no additional dependencies required.

Data returned has the following fields;

bios_date: str
    bios_version: str
    vendor: str
    model: str
    operating_system: str
    cpu_cores: int
    cpu_model: str
    cpu_threads: int
    memory_kb: int
    flash_count: int
    flash_capacity: str
    flash_capacity_bytes: int
    flash_list: List[str]
    hdd_count: int
    hdd_capacity: str
    hdd_capacity_bytes: int
    hdd_list: List[str]
    ipv4_subnets: List[str]
    nic_count: int
    nics_by_speed: Dict[str, int]
    subscribed: str