# Unable to Delete Network Host Config from UI

## Problem

Unable to delete network host config from the UI, even if the host is not using it.

## Environment

* Private Cloud Director Virtualization - till 2025.4-497
* Self-Hosted Private Cloud Director Kubernetes - till 2025.4-497
* Component: Blueprint

## Cause

The host configuration was previously associated with a host that has since been decommissioned. However, a **stale mapping entry** remains between the host and the host configuration in the `host_to_hostconfig_map` table of the Resource Manager database.

This issue is tracked under bug **PCD-407** and is now fixed in PCD 2025.6-151 and later releases, which prevent new stale mappings from being created.

{% hint style="warning" %}
Existing stale entries from earlier versions will persist after the upgrade; it's recommended to follow the steps mentioned in the Workaround to delete the stale entries.
{% endhint %}

## Workaround

* Retrieve the token:

```bash
token=$(openstack token issue -f value -c id)
```

* Get the list of host configs:

```bash
curl -s -X GET   -H "X-Auth-Token: $token"   https://<PCD_FQDN>/resmgr/v2/hostconfigs | jq '.[] | {id, name}'

# Sample Output:
{
  "id": "[HOSTCONFIG_ID_1]",
  "name": "[HOSTCONFIG_NAME_1]"
}
{
  "id": "[HOSTCONFIG_ID_2]",
  "name": "[HOSTCONFIG_NAME_2]"
}
{
  "id": "[HOSTCONFIG_ID_3]",
  "name": "[HOSTCONFIG_NAME_3]"
}
```

* Get the list of hosts that use the host config that needs to be deleted:

```bash
curl -s -X GET   -H "X-Auth-Token: $token"   https://<PCD_FQDN>/resmgr/v2/hosts   | jq -c '.[] | select(.hostconfig_id == "<HOSTCONFIG_ID>") | {id, hostname: .info.hostname, hostconfig_id}'

# Sample Output:
{
  "id": "[HOST_ID_1]",
  "hostname": "[HOSTNAME_1]",
  "hostconfig_id": "[HOSTCONFIG_ID]"
}
{
  "id": "[HOST_ID_2]",
  "hostname": "[HOSTNAME_2]",
  "hostconfig_id": "[HOSTCONFIG_ID]"
}
```

* Delete the stale host config mapping. Run below for each `[HOST_ID]`returned in the output of the command executed in the above output

```bash
curl -s -X DELETE   -H "X-Auth-Token: $token"   "https://<PCD_FQDN>/resmgr/v2/hosts/<HOST_ID>/hostconfig/<HOSTCONFIG_ID>"
```

* Delete the host Configuration after removing all the mappings

```bash
curl -s -X DELETE -H "X-Auth-Token: $token" "https://<PCD_FQDN>/resmgr/v2/hostconfigs/<HOSTCONFIG_ID>"
```

## Validation

Check the UI to confirm that the previously stale host configuration no longer appears.


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