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Chapter 21. Additional introspection operations

In some situations, you might want to perform introspection outside of the standard overcloud deployment workflow. For example, you might want to introspect new nodes or refresh introspection data after replacing hardware on existing unused nodes.

21.1. Performing individual node introspection

To perform a single introspection on an available node, set the node to management mode and perform the introspection.

Procedure

  1. Set all nodes to a manageable state:

    (undercloud) $ openstack baremetal node manage [NODE UUID]
  2. Perform the introspection:

    (undercloud) $ openstack overcloud node introspect [NODE UUID] --provide

    After the introspection completes, the node changes to an available state.

21.2. Performing node introspection after initial introspection

After an initial introspection, all nodes enter an available state due to the --provide option. To perform introspection on all nodes after the initial introspection, set the node to management mode and perform the introspection.

Procedure

  1. Set all nodes to a manageable state

    (undercloud) $ for node in $(openstack baremetal node list --fields uuid -f value) ; do openstack baremetal node manage $node ; done
  2. Run the bulk introspection command:

    (undercloud) $ openstack overcloud node introspect --all-manageable --provide

    After the introspection completes, all nodes change to an available state.

21.3. Performing network introspection for interface information

Network introspection retrieves link layer discovery protocol (LLDP) data from network switches. The following commands show a subset of LLDP information for all interfaces on a node, or full information for a particular node and interface. This can be useful for troubleshooting. Director enables LLDP data collection by default.

Procedure

  1. To get a list of interfaces on a node, run the following command:

    (undercloud) $ openstack baremetal introspection interface list [NODE UUID]

    For example:

    (undercloud) $ openstack baremetal introspection interface list c89397b7-a326-41a0-907d-79f8b86c7cd9
    +-----------+-------------------+------------------------+-------------------+----------------+
    | Interface | MAC Address       | Switch Port VLAN IDs   | Switch Chassis ID | Switch Port ID |
    +-----------+-------------------+------------------------+-------------------+----------------+
    | p2p2      | 00:0a:f7:79:93:19 | [103, 102, 18, 20, 42] | 64:64:9b:31:12:00 | 510            |
    | p2p1      | 00:0a:f7:79:93:18 | [101]                  | 64:64:9b:31:12:00 | 507            |
    | em1       | c8:1f:66:c7:e8:2f | [162]                  | 08:81:f4:a6:b3:80 | 515            |
    | em2       | c8:1f:66:c7:e8:30 | [182, 183]             | 08:81:f4:a6:b3:80 | 559            |
    +-----------+-------------------+------------------------+-------------------+----------------+
  2. To view interface data and switch port information, run the following command:

    (undercloud) $ openstack baremetal introspection interface show [NODE UUID] [INTERFACE]

    For example:

    (undercloud) $ openstack baremetal introspection interface show c89397b7-a326-41a0-907d-79f8b86c7cd9 p2p1
    +--------------------------------------+------------------------------------------------------------------------------------------------------------------------+
    | Field                                | Value                                                                                                                  |
    +--------------------------------------+------------------------------------------------------------------------------------------------------------------------+
    | interface                            | p2p1                                                                                                                   |
    | mac                                  | 00:0a:f7:79:93:18                                                                                                      |
    | node_ident                           | c89397b7-a326-41a0-907d-79f8b86c7cd9                                                                                   |
    | switch_capabilities_enabled          | [u'Bridge', u'Router']                                                                                                 |
    | switch_capabilities_support          | [u'Bridge', u'Router']                                                                                                 |
    | switch_chassis_id                    | 64:64:9b:31:12:00                                                                                                      |
    | switch_port_autonegotiation_enabled  | True                                                                                                                   |
    | switch_port_autonegotiation_support  | True                                                                                                                   |
    | switch_port_description              | ge-0/0/2.0                                                                                                             |
    | switch_port_id                       | 507                                                                                                                    |
    | switch_port_link_aggregation_enabled | False                                                                                                                  |
    | switch_port_link_aggregation_id      | 0                                                                                                                      |
    | switch_port_link_aggregation_support | True                                                                                                                   |
    | switch_port_management_vlan_id       | None                                                                                                                   |
    | switch_port_mau_type                 | Unknown                                                                                                                |
    | switch_port_mtu                      | 1514                                                                                                                   |
    | switch_port_physical_capabilities    | [u'1000BASE-T fdx', u'100BASE-TX fdx', u'100BASE-TX hdx', u'10BASE-T fdx', u'10BASE-T hdx', u'Asym and Sym PAUSE fdx'] |
    | switch_port_protocol_vlan_enabled    | None                                                                                                                   |
    | switch_port_protocol_vlan_ids        | None                                                                                                                   |
    | switch_port_protocol_vlan_support    | None                                                                                                                   |
    | switch_port_untagged_vlan_id         | 101                                                                                                                    |
    | switch_port_vlan_ids                 | [101]                                                                                                                  |
    | switch_port_vlans                    | [{u'name': u'RHOS13-PXE', u'id': 101}]                                                                                 |
    | switch_protocol_identities           | None                                                                                                                   |
    | switch_system_name                   | rhos-compute-node-sw1                                                                                                  |
    +--------------------------------------+------------------------------------------------------------------------------------------------------------------------+

21.4. Retrieving hardware introspection details

The Bare Metal service hardware-inspection-extras feature is enabled by default, and you can use it to retrieve hardware details for overcloud configuration. For more information about the inspection_extras parameter in the undercloud.conf file, see Configuring director.

For example, the numa_topology collector is part of the hardware-inspection extras and includes the following information for each NUMA node:

  • RAM (in kilobytes)
  • Physical CPU cores and their sibling threads
  • NICs associated with the NUMA node

Procedure

  • To retrieve the information listed above, substitute <UUID> with the UUID of the bare-metal node to complete the following command:

    # openstack baremetal introspection data save <UUID> | jq .numa_topology

    The following example shows the retrieved NUMA information for a bare-metal node:

    {
      "cpus": [
        {
          "cpu": 1,
          "thread_siblings": [
            1,
            17
          ],
          "numa_node": 0
        },
        {
          "cpu": 2,
          "thread_siblings": [
            10,
            26
          ],
          "numa_node": 1
        },
        {
          "cpu": 0,
          "thread_siblings": [
            0,
            16
          ],
          "numa_node": 0
        },
        {
          "cpu": 5,
          "thread_siblings": [
            13,
            29
          ],
          "numa_node": 1
        },
        {
          "cpu": 7,
          "thread_siblings": [
            15,
            31
          ],
          "numa_node": 1
        },
        {
          "cpu": 7,
          "thread_siblings": [
            7,
            23
          ],
          "numa_node": 0
        },
        {
          "cpu": 1,
          "thread_siblings": [
            9,
            25
          ],
          "numa_node": 1
        },
        {
          "cpu": 6,
          "thread_siblings": [
            6,
            22
          ],
          "numa_node": 0
        },
        {
          "cpu": 3,
          "thread_siblings": [
            11,
            27
          ],
          "numa_node": 1
        },
        {
          "cpu": 5,
          "thread_siblings": [
            5,
            21
          ],
          "numa_node": 0
        },
        {
          "cpu": 4,
          "thread_siblings": [
            12,
            28
          ],
          "numa_node": 1
        },
        {
          "cpu": 4,
          "thread_siblings": [
            4,
            20
          ],
          "numa_node": 0
        },
        {
          "cpu": 0,
          "thread_siblings": [
            8,
            24
          ],
          "numa_node": 1
        },
        {
          "cpu": 6,
          "thread_siblings": [
            14,
            30
          ],
          "numa_node": 1
        },
        {
          "cpu": 3,
          "thread_siblings": [
            3,
            19
          ],
          "numa_node": 0
        },
        {
          "cpu": 2,
          "thread_siblings": [
            2,
            18
          ],
          "numa_node": 0
        }
      ],
      "ram": [
        {
          "size_kb": 66980172,
          "numa_node": 0
        },
        {
          "size_kb": 67108864,
          "numa_node": 1
        }
      ],
      "nics": [
        {
          "name": "ens3f1",
          "numa_node": 1
        },
        {
          "name": "ens3f0",
          "numa_node": 1
        },
        {
          "name": "ens2f0",
          "numa_node": 0
        },
        {
          "name": "ens2f1",
          "numa_node": 0
        },
        {
          "name": "ens1f1",
          "numa_node": 0
        },
        {
          "name": "ens1f0",
          "numa_node": 0
        },
        {
          "name": "eno4",
          "numa_node": 0
        },
        {
          "name": "eno1",
          "numa_node": 0
        },
        {
          "name": "eno3",
          "numa_node": 0
        },
        {
          "name": "eno2",
          "numa_node": 0
        }
      ]
    }