Configure Scale-Out

1 Description

This instruction describes how to perform scale-out operation, which adds a Virtual Machine (VM) to the cluster.

2 Procedure

2.1 Configure Scale-Out

Prerequisites

No documents are required.
No tools are required.
The following conditions must apply:
- The scaling functionality is enabled.
- A default Role object exists.
- Other upgrade operations are not ongoing, for example, software upgrade.
- An Ericsson Command-Line Interface (ECLI) session in Exec mode is in progress.

Steps

Using the Ericsson Cloud Manager, create one or more VMs. The VMs must have the same number of Virtual CPUs (VCPUs), the same amount of RAM, and the same number of ports as the other Payload (PL) VMs in the cluster.
Note:
If Ericsson Cloud Manager is not being used, refer to OpenStack CLI Commands in Section 3 OpenStack CLI Commands , which illustrates how to perform this step using the OpenStack CLI.
Launch the new VMs. The new VMs automatically PXE boot from the System Controller (SC) node VMs.
Navigate to the CrM managed object, for example
>dn ManagedElement=NODE06ST,SystemFunctions=1,SysM=1,CrM=1

Verify that the scale-out process has started:

(CrM=1)>show -r

The following is an example output:

CrM=1
   autoRoleAssignment=ENABLED
   ComputeResourceRole=PL-3
      adminState=UNLOCKED
      instantiationState=INSTANTIATED
      operationalState=ENABLED
      provides="ManagedElement=1,SystemFunctions=1,SysM=1,CrM=1,Role=Default-Role"
      uses="ManagedElement=1,Equipment=1,ComputeResource=PL-3"
   ComputeResourceRole=PL-4
      adminState=UNLOCKED
      instantiationState=INSTANTIATING
      operationalState=DISABLED
      provides="ManagedElement=1,SystemFunctions=1,SysM=1,CrM=1,Role=Default-Role"
      uses="ManagedElement=1,Equipment=1,ComputeResource=PL-4"
   Role=SYSTEM
      isProvidedBy
      scalability=NON_SCALABLE
   Role=Default-Role
      isProvidedBy
         "ManagedElement=1,SystemFunctions=1,SysM=1,CrM=1,ComputeResourceRole=PL-3"
         "ManagedElement=1,SystemFunctions=1,SysM=1,CrM=1,ComputeResourceRole=PL-4"
      scalability=SCALABLE

This example shows that instantiationState has changed to INSTANTIATING for node PL-4. It means that the Scale out has started for node PL-4.

Continue to check the progress until the scale-out process has ended and that the added node has joined the cluster:
(CrM=1)>show -m ComputeResourceRole -p instantiationState,operationalState

The following example output shows the final result:
ComputeResourceRole=PL-3 instantiationState=INSTANTIATED operationalState=ENABLED ComputeResourceRole=PL-4 instantiationState=INSTANTIATED operationalState=ENABLED
This example shows that instantiationState has changed to INSTANTIATED for node PL-4. It means that PL-4 is added to the cluster.

The example also shows that operationalState has changed to ENABLED for node PL-4. It means that node PL-4 has joined the cluster.
Perform a health check, refer to Health Check documentation available in the library.

3 OpenStack CLI Commands

The following is an example of the OpenStack CLI commands that are required to create a VM, attached to an existing VNF VLAN network.

>nova flavor-create flavor_PL-14 auto 16384 0 8

The following is an example output:

 
+-------------+--------------+-----------+-----+----------+-----+-------+-------------+----------+
| ID          | Name         | Memory_MB | Disk| Ephemeral| Swap| VCPUs | RXTX_Factor | Is_Public|
+-------------+--------------+-----------+-----+----------+-----+-------+-------------+----------+
| 785e88b1-   | flavor_PL-14 | 16384     | 0   | 0        |     | 8     | 1.0         | False    |
| f96e-4362-  |              |           |     |          |     |       |             |          |
| af8b-       |              |           |     |          |     |       |             |          |
| 3302a59c3c17|              |           |     |          |     |       |             |          |
+-------------+--------------+-----------+-----+----------+-----+-------+-------------+----------+

>glance image-create –name pl14_pxe_image –disk-format=qcow2 –container-format=bare < pl14pxeboot.qcow2

The following is an example output:

 
+-------------+----------------+-----------+-----------+----------+--------+
| ID          | Name           | Disk      | Container | Size     | Status |
|             |                | Format    | Format    |          |        |
+-------------+----------------+-----------+-----------+----------+--------+
| 7c9b508f-   | pl14_pxe_image | qcow2     | bare      | 4194304  | active |
| 2ce7-4417-  |                |           |           |          |        |
| a05a-       |                |           |           |          |        |
| 56f404801732|                |           |           |          |        |
+-------------+----------------+-----------+-----------+----------+--------+

>neutron port-create vnf_int_sp --fixed-ip ip_address=10.0.12.10 --name pl14_port_1

The following is an example output:

 
+-------------+---------------------+---------------------+---------------+------------------+
| Port State  | Port ID             | Net ID              | IP Addresses  | Mac Addr         |
+-------------+---------------------+---------------------+---------------+------------------+
| ACTIVE      | 352bf283-592d-487e- | cf8cc55b-b2ac-4d84- | 10.35.56.85   | 02:10:20:00:01:01|
|             | bbb7-787cb679c215   | 9a8f-14b1dae829e0   |               |                  |
+-------------+---------------------+---------------------+---------------+------------------+

>neutron port-create vnf_sig_sp2 --fixed-ip ip_address=10.35.56.82 --name pl14_port_2

The following is an example output:

 
+-------------+---------------------+---------------------+---------------+------------------+
| Port State  | Port ID             | Net ID              | IP Addresses  | Mac Addr         |
+-------------+---------------------+---------------------+---------------+------------------+
| ACTIVE      | 3dd35574-ef47-449b- | 1cff56d8-42ce-4163- | 169.254.100.1 | 02:10:20:00:01:01|
|             | 937e-3852f3cf53c0   | b6be-edd35abd56a4   |               |                  |
+-------------+---------------------+---------------------+---------------+------------------+

>nova boot --flavor flavor_PL-4 --image <pl4_pxe_image_id> --nic port-id=<pl14_port_1_id> --nic port-id=<pl14_port_2_id> --hint different_host=<sc_1_vm_id> --hint different_host=<sc2_vm_id> PL-4

Where:

Image <pl4_pxe_image_id>= ID 7c9b508f-2ce7-4417-a05a-56f404801732

Port 1 <pl14_port_1_id>= ID 352bf283-592d-487e-bbb7-787cb679c215

Port 2 <pl14_port_2_id>= ID 3dd35574-ef47-449b-937e-3852f3cf53c0

<sc_1_vm_id> and <sc_2_vm_id> can be determined using the following command:

>nova flavor-list

The following is an example output:

 
+-------------+--------------+-----------+-----+----------+-----+-------+-------------+----------+
| ID          | Name         | Memory_MB | Disk| Ephemeral| Swap| VCPUs | RXTX_Factor | Is_Public|
+-------------+--------------+-----------+-----+----------+-----+-------+-------------+----------+
| 13b98018-   | flavor_SC-1  | 16384     | 100 | 0        |     | 8     | 1.0         | False    |
| da79-4f15-  |              |           |     |          |     |       |             |          |
| 9e28-       |              |           |     |          |     |       |             |          |
| 1d05b8ae5d5c|              |           |     |          |     |       |             |          |
+-------------+--------------+-----------+-----+----------+-----+-------+-------------+----------+
| 8aea3b45-   | flavor_SC-2  | 16384     | 100 | 0        |     | 8     | 1.0         | False    |
| 3378-4086-  |              |           |     |          |     |       |             |          |
| 852f-       |              |           |     |          |     |       |             |          |
| 516473ac47fd|              |           |     |          |     |       |             |          |
+-------------+--------------+-----------+-----+----------+-----+-------+-------------+----------+

1	Description
2	Procedure
2.1	Configure Scale-Out
3	OpenStack CLI Commands