MartinEmrich opened a new issue, #8157:
URL: https://github.com/apache/cloudstack/issues/8157
##### ISSUE TYPE
<!-- Pick one below and delete the rest -->
* Improvement Request
* Documentation Report
##### COMPONENT NAME
~~~
UI, Documentation
~~~
##### CLOUDSTACK VERSION
~~~
4.18.1
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##### CONFIGURATION
Hypervisor: Xen/XCP-ng
##### OS / ENVIRONMENT
##### SUMMARY
When trying to delete a Template, it fails with a message like "Error Unable
to delete template with id: 294 because VM instances: [VM instance
{"id":2972,"instanceName":"i-39 ..." (continuing with a long list beyond the
screen).
This can be overridden using the "force" delete option, leaving a bad
feeling of "doing something dangerous".
##### STEPS TO REPRODUCE
- Create a VM template (e.g. import ISO, install VM, make Template from the
root device).
- Create a new VM from this template
- Try to delete the template
##### EXPECTED RESULTS
A template should be deletable at any time without error, unless there is a
actual reason against it. (which could then still be overridden using the
"force" option).
##### ACTUAL RESULTS
Error message (see above). This gives me a clear feeling of "doing something
bad", without any explanation.
This suggests that there is a hidden connection between a template and VMs
created from it after creation, which the" force" option would just leave
dangling.
Yet the documentation
(http://docs.cloudstack.apache.org/en/4.18.1.0/adminguide/templates.html)
explicitly states "When templates are deleted, the VMs instantiated from them
will continue to run.", which is also my observation.
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