Chapter 2. Configuring routed spine-leaf in the undercloud

Procedure

1. Log in to the undercloud as the stack user.

2. If you do not already have an undercloud.conf file, copy the sample template file:

   [stack@director ~]$ cp /usr/share/python-tripleoclient/undercloud.conf.sample ~/undercloud.conf

3. Edit the undercloud.conf file.

4. Set the following values in the [DEFAULT] section:

   1. Set local_ip to the undercloud IP on leaf0:

      local_ip = 192.168.10.1/24

   2. Set undercloud_public_vip to the externally facing IP address of the undercloud:

      undercloud_public_vip = 10.1.1.1

   3. Set undercloud_admin_vip to the administration IP address of the undercloud. This IP address is usually on leaf0:

      undercloud_admin_vip = 192.168.10.2

   4. Set local_interface to the interface to bridge for the local network:

      local_interface = eth1

   5. Set enable_routed_networks to true:

      enable_routed_networks = true

   6. Define your list of subnets using the subnets parameter. Define one subnet for each L2 segment in the routed spine and leaf:

      subnets = leaf0,leaf1,leaf2

   7. Specify the subnet associated with the physical L2 segment local to the undercloud using the local_subnet parameter:

      local_subnet = leaf0

   8. Set the value of undercloud_nameservers.

      undercloud_nameservers = 10.11.5.19,10.11.5.20

      Tip

      You can find the current IP addresses of the DNS servers that are used for the undercloud nameserver by looking in /etc/resolv.conf.

5. Create a new section for each subnet that you define in the subnets parameter:

   [leaf0]
   cidr = 192.168.10.0/24
   dhcp_start = 192.168.10.10
   dhcp_end = 192.168.10.90
   inspection_iprange = 192.168.10.100,192.168.10.190
   gateway = 192.168.10.1
   masquerade = False
   
   [leaf1]
   cidr = 192.168.11.0/24
   dhcp_start = 192.168.11.10
   dhcp_end = 192.168.11.90
   inspection_iprange = 192.168.11.100,192.168.11.190
   gateway = 192.168.11.1
   masquerade = False
   
   [leaf2]
   cidr = 192.168.12.0/24
   dhcp_start = 192.168.12.10
   dhcp_end = 192.168.12.90
   inspection_iprange = 192.168.12.100,192.168.12.190
   gateway = 192.168.12.1
   masquerade = False

6. Save the undercloud.conf file.

7. Run the undercloud installation command:

   [stack@director ~]$ openstack undercloud install

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. Create flavors for each custom role:

   $ ROLES="control compute_leaf0 compute_leaf1 compute_leaf2 ceph-storage_leaf0 ceph-storage_leaf1 ceph-storage_leaf2"
   $ for ROLE in $ROLES; do openstack flavor create --id auto --ram 4096 --disk 40 --vcpus 1 $ROLE ; done
   $ for ROLE in $ROLES; do openstack flavor set --property "cpu_arch"="x86_64" --property "capabilities:boot_option"="local" --property "capabilities:profile"="$ROLE" --property resources:CUSTOM_BAREMETAL='1' --property resources:DISK_GB='0' --property resources:MEMORY_MB='0' --property resources:VCPU='0' $ROLE ; done

3. Tag nodes to their respective leaf networks. For example, run the following command to tag a node with UUID 58c3d07e-24f2-48a7-bbb6-6843f0e8ee13 to the Compute role on Leaf2:

   $ openstack baremetal node set --property capabilities='profile:compute_leaf2,boot_option:local' 58c3d07e-24f2-48a7-bbb6-6843f0e8ee13

4. Create an environment file (~/templates/node-data.yaml) that contains the mapping of flavors to roles:

   parameter_defaults:
     OvercloudControllerFlavor: control
     OvercloudComputeLeaf0Flavor: compute_leaf0
     OvercloudComputeLeaf1Flavor: compute_leaf1
     OvercloudComputeLeaf2Flavor: compute_leaf2
     OvercloudCephStorageLeaf0Flavor: ceph-storage_leaf0
     OvercloudCephStorageLeaf1Flavor: ceph-storage_leaf1
     OvercloudCephStorageLeaf2Flavor: ceph-storage_leaf2
     ControllerLeaf0Count: 3
     ComputeLeaf0Count: 3
     ComputeLeaf1Count: 3
     ComputeLeaf2Count: 3
     CephStorageLeaf0Count: 3
     CephStorageLeaf1Count: 3
     CephStorageLeaf2Count: 3

   You can also set the number of nodes to deploy in the overcloud using each respective *Count parameter.

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. Check the bare metal nodes:

   $ openstack baremetal node list

3. Ensure that the bare metal nodes are either in enroll or manageable state. If the bare metal node is not in one of these states, the command that sets the physical_network property on the baremetal port fails. To set all nodes to manageable state, run the following command:

   $ for node in $(openstack baremetal node list -f value -c Name); do openstack baremetal node manage $node --wait; done

4. Check which baremetal ports are associated with which baremetal node:

   $ openstack baremetal port list --node <node-uuid>

5. Set the physical-network parameter for the ports. In the example below, three subnets are defined in the configuration: leaf0, leaf1, and leaf2. The local_subnet is leaf0. Because the physical network for the local_subnet is always ctlplane, the baremetal port connected to leaf0 uses ctlplane. The remaining ports use the other leaf names:

   $ openstack baremetal port set --physical-network ctlplane <port-uuid>
   $ openstack baremetal port set --physical-network leaf1 <port-uuid>
   $ openstack baremetal port set --physical-network leaf2 <port-uuid>
   $ openstack baremetal port set --physical-network leaf2 <port-uuid>

6. Ensure that the nodes are in available state before deploying the overcloud:

   $ openstack overcloud node provide --all-manageable