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https://issues.apache.org/jira/browse/CLOUDSTACK-9607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15874526#comment-15874526
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ASF GitHub Bot commented on CLOUDSTACK-9607:
--------------------------------------------
Github user ustcweizhou commented on the issue:
https://github.com/apache/cloudstack/pull/1773
@priyankparihar the default behaviour is forced=true from few years ago. If
the template is removed, the user vm is not impacted which is very good. There
is indeed an issue when reinstall the vm. For you it could be a very risky
issue. For us at least it is not a big issue as we provide some other templates
for vm reinstallation.
> Preventing template deletion when template is in use.
> -----------------------------------------------------
>
> Key: CLOUDSTACK-9607
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9607
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Reporter: Priyank Parihar
> Assignee: Priyank Parihar
>
> Consider this scenario:
> 1. User launches a VM from Template and keep it running
> 2. Admin logins and deleted that template [CloudPlatform does not check
> existing / running VM etc. while the deletion is done]
> 3. User resets the VM
> 4. CloudPlatform fails to star the VM as it cannot find the corresponding
> template.
> It throws error as
> java.lang.RuntimeException: Job failed due to exception Resource [Host:11] is
> unreachable: Host 11: Unable to start instance due to can't find ready
> template: 209 for data center 1
> at
> com.cloud.vm.VmWorkJobDispatcher.runJob(VmWorkJobDispatcher.java:113)
> at
> org.apache.cloudstack.framework.jobs.impl.AsyncJobManagerImpl$5.runInContext(AsyncJobManagerImpl.java:495)
> Client is requesting better handing of this scenario. We need to check
> existing / running VM's when the template is deleted and warn admin about the
> possible issue that may occur.
> REPRO STEPS
> ==================
> 1. Launches a VM from Template and keep it running
> 2. Now delete that template
> 3. Reset the VM
> 4. CloudPlatform fails to star the VM as it cannot find the corresponding
> template.
> EXPECTED BEHAVIOR
> ==================
> Cloud platform should throw some warning message while the template is
> deleted if that template is being used by existing / running VM's
> ACTUAL BEHAVIOR
> ==================
> Cloud platform does not throw as waring etc.
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