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

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

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

Bash
    
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openstack volume service list --service cinder-volume
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Example
    
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# 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>                |+---------------+------------------------+------+----------+-------+----------------------------+
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Ensure the selected host is in disabled status. If it's not, disable it with the below command:

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openstack volume service set --disable <HostUUID> <service>
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Example
    
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# 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>                |+---------------+------------------------+------+----------+-------+----------------------------+
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Now to remove the cinder-volume service from a host:

Bash
    
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cinder-manage service remove <service> <host>
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Example
    
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# cinder-manage service remove cinder-volume <UUID>@netapp_std1Service cinder-volume on host <UUID>@netapp_std1 removed.
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To confirm if the cinder-volume service is removed, use the same command as mentioned in step #1:

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