Prestage Subcloud Orchestration

This section describes the prestage strategy for a single subcloud, default subcloud group or a specific subcloud group.

Prerequisites

For more information on prerequisites for prestage upgrade and reinstall, see Prestage a Subcloud.

Note

Any existing strategy must be deleted first as only one type of strategy can exist at a time.

Procedure

1. Create a prestage strategy.

   Prestage strategy can be created for a single subcloud, the default subcloud group (all subclouds), or a specific subcloud group.

   To create a prestage strategy for a specific subcloud, use the following command:

   [sysadmin@controller-0 ~(keystone_admin)]$ dcmanager prestage-strategy create --for-install --release nn.nn subcloud7
   Enter the sysadmin password for the subcloud:
   Re-enter sysadmin password to confirm:
   +--------------------------+-----------------------------+
   | Field                    | Value                       |
   +--------------------------+-----------------------------+
   | strategy type            | prestage                    |
   | subcloud apply type      | None                        |
   | max parallel subclouds   | 2                           |
   | stop on failure          | False                       |
   | prestage software version| 22.12                       |
   | state                    | initial                     |
   | created_at               | 2024-10-25T05:37:54.607307  |
   | updated_at               | None                        |
   +--------------------------+-----------------------------+
   

   To create a prestage strategy for the default subcloud group, use the following command:

   [sysadmin@controller-0 ~(keystone_admin)]$ dcmanager prestage-strategy create --for-sw-deploy
   Enter the sysadmin password for the subcloud:
   Re-enter sysadmin password to confirm:
   +--------------------------+-----------------------------+
   | Field                    | Value                       |
   +--------------------------+-----------------------------+
   | strategy type            | prestage                    |
   | subcloud apply type      | None                        |
   | max parallel subclouds   | 50                          |
   | stop on failure          | False                       |
   | prestage software version| 24.09                       |
   | state                    | initial                     |
   | created_at               | 2024-10-25T05:37:54.607307  |
   | updated_at               | None                        |
   +--------------------------+-----------------------------+
   

   Note

   If the --release option is not specified, the release version of the system controller will be used.

   To create a prestage strategy for a specific subcloud group, use the following command:

   ~(keystone_admin)]$ dcmanager prestage-strategy create --group First_10_Subclouds
   Enter the sysadmin password for the subcloud:
   Re-enter sysadmin password to confirm:
   +------------------------+-----------------------------+
   | Field                  | Value                       |
   +------------------------+-----------------------------+
   | strategy type          | prestage                    |
   | subcloud apply type    | parallel                    |
   | max parallel subclouds | 10                          |
   | stop on failure        | False                       |
   | state                  | initial                     |
   | created_at             | 2202-03-22T18:54:45.037336  |
   | updated_at             | None                        |
   +------------------------+-----------------------------+
   

   Note

   If the prestage type is not specified, the default prestage type (--for-install) will be applied.

   Note

   Unlike other types of orchestration, prestage orchestration requires sysadmin password as all communications with the subclouds are done using ansible over the oam network to avoid disruptions to management traffic.

2. Apply the strategy.

   ~(keystone_admin)]$ dcmanager prestage-strategy apply
   
   +------------------------+-----------------------------+
   | Field                  | Value                       |
   +------------------------+-----------------------------+
   | strategy type          | prestage                    |
   | subcloud apply type    | None                        |
   | max parallel subclouds | None                        |
   | stop on failure        | False                       |
   | state                  | applying                    |
   | created_at             | 2202-03-22T18:33:20:100712  |
   | updated_at             | 2202-03-22T18:36:03.895542  |
   +------------------------+-----------------------------+
   

3. Monitor the progress of the strategy.

   ~(keystone_admin)]$ dcmanager strategy-step list
   
   +-----------+-------+---------------------+---------+----------------------------+-------------+
   | cloud     | stage | state               | details | started_at                 | finished_at |
   +-----------+-------+---------------------+---------+----------------------------+-------------+
   | subcloud1 |   1   | prestaging-packages |         | 2202-03-22 18:55:11.523970 | None        |
   +-----------+-------+---------------------+---------+----------------------------+-------------+
   

4. (Optional) Abort the strategy, if required.

   The abort command can be used to abort the prestage orchestration strategy after the current step of the currently applying state is completed.

5. Delete the strategy.

   ~(keystone_admin)]$ dcmanager prestage-strategy delete
   
   +------------------------+-----------------------------+
   | Field                  | Value                       |
   +------------------------+-----------------------------+
   | strategy type          | prestage                    |
   | subcloud apply type    | None                        |
   | max parallel subclouds | None                        |
   | stop on failure        | False                       |
   | state                  | deleting                    |
   | created_at             | 2202-03-22T19:09:03.576053  |
   | updated_at             | 2202-03-22T19:09:09.436732  |
   +------------------------+-----------------------------+
   

Troubleshoot Subcloud Prestage Orchestration

If an orchestrated prestage fails for a subcloud, check the log specified in the error message for reasons of failure. After the issue has been resolved, prestage can be retried using one of the following options:

Procedure

• Run dcmanager subcloud prestage command on the failed subcloud.

• Create a subcloud group, for example, prestage-retry, add the failed subcloud(s) to group prestage-retry, and finally create and apply the prestage strategy for the group.

  Warning

  Do not retry orchestration with an existing group unless the subclouds that have been successfully prestaged are removed from the group. Otherwise, prestage will be repeated for ALL subclouds in the group.

For more information on the following, see Prestage a Subcloud

• Upload Prestage Image List

• Single Subcloud Prestage

• Rerun Subcloud Prestage

• Verify Subcloud Prestage

• Verifying Usage of Prestaged Data