Deleting Cinder Service From Host

Problem

How to delete the stale cinder-volume service if the host no longer exist?

Environment

• Platform9 Managed OpenStack - All Versions

• Cinder

Procedure

Warning

Before performing following steps, ensure that volumes are not hosted on the cinder-volume services to be decommissioned.

1. Identify the host on which the Cinder service has to be removed. Use the below command to list the cinder-volume services:

Bash

openstack volume service list --service cinder-volume

Example

# openstack volume service list --service cinder-volume
+---------------+------------------------+------+----------+-------+----------------------------+
| Binary        | Host                   | Zone | Status   | State | Updated At                 |
+---------------+------------------------+------+----------+-------+----------------------------+
| cinder-volume | <UUID>@netapp_std1     | nova | enabled  | down  | <TimeStamp>                |
[...]
| cinder-volume | <UUID>@netapp_std2     | nova | enabled  | up    | <TimeStamp>                |
+---------------+------------------------+------+----------+-------+----------------------------+

1. Ensure the selected host is in disabled status. If it's not, disable it with the below command:

Bash

openstack volume service set --disable <HostUUID> <service>

Example

# openstack volume service set --disable <UUID>@netapp_std1 cinder-volume
# openstack volume service list --service cinder-volume
+---------------+------------------------+------+----------+-------+----------------------------+
| Binary        | Host                   | Zone | Status   | State | Updated At                 |
+---------------+------------------------+------+----------+-------+----------------------------+
| cinder-volume | <UUID>@netapp_std1     | nova | disabled | down  | <TimeStamp>                |
[...]
| cinder-volume | <UUID>@netapp_std2     | nova | enabled  | up    | <TimeStamp>                |
+---------------+------------------------+------+----------+-------+----------------------------+

1. Now to remove the cinder-volume service from a host:

Bash

cinder-manage service remove <service> <host>

Example

# cinder-manage service remove cinder-volume <UUID>@netapp_std1
Service cinder-volume on host <UUID>@netapp_std1 removed.

1. To confirm if the cinder-volume service is removed, use the same command as mentioned in step #1:

Example

# openstack volume service list --service cinder-volume
+---------------+------------------------+------+----------+-------+----------------------------+
| Binary        | Host                   | Zone | Status   | State | Updated At                 |
+---------------+------------------------+------+----------+-------+----------------------------+
| cinder-volume | <UUID>@netapp_std2     | nova | enabled  | up    | <TimeStamp>                |
[...]
+---------------+------------------------+------+----------+-------+----------------------------+