tampler opened a new issue #5936:
URL: https://github.com/apache/cloudstack/issues/5936


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   ##### ISSUE TYPE
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    * Bug Report
   
   ##### COMPONENT NAME
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   ~~~
   API
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   ##### CLOUDSTACK VERSION
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   New line separated list of affected versions, commit ID for issues on main 
branch.
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   ~~~
   4.16.1.0-SNAPSHOT
   ~~~
   
   ##### CONFIGURATION
   <!--
   Information about the configuration if relevant, e.g. basic network, 
advanced networking, etc.  N/A otherwise
   -->
   I'm using the latest 4.16 Master and build a simulator image manually
   
   ##### OS / ENVIRONMENT
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   Information about the environment if relevant, N/A otherwise
   -->
   Ubuntu 21.10
   OpenJDK 11
   
   ##### SUMMARY
   <!-- Explain the problem/feature briefly -->
   ```bash
   INFO  [o.a.c.s.d.p.DefaultHostListener] (ApiServer-10:ctx-d982031c 
ctx-6062c5c0) (logid:aac2a26e) Connection established between storage pool 
org.apache.cloud
   stack.storage.datastore.PrimaryDataStoreImpl@3953e834 and host 1             
                                                                                
 
   INFO  [o.a.c.s.d.l.SimulatorImageStoreLifeCycleImpl] 
(ApiServer-1:ctx-58b428a9 ctx-9c2836b5) (logid:5b4df9e5) Trying to add a new 
data store at nfs://10.147.2
   8.6:/export/home/sandbox/sstor to data center 1                              
                                                                                
 
   ERROR [o.a.c.s.i.TemplateServiceImpl] (ApiServer-1:ctx-58b428a9 
ctx-9c2836b5) (logid:5b4df9e5) No remote endpoint to send command, check if 
host or ssvm is do
   wn?                                                                          
                                                                                
 
   ERROR [c.c.u.SystemVmTemplateRegistration] (ApiServer-1:ctx-58b428a9 
ctx-9c2836b5) (logid:5b4df9e5) Failed to register template for hypervisor: 
Simulator
   java.lang.NullPointerException                                               
                                                                                
 
           at 
com.cloud.upgrade.SystemVmTemplateRegistration.registerTemplate(SystemVmTemplateRegistration.java:676)
            
           at 
com.cloud.storage.StorageManagerImpl$3.doInTransactionWithoutResult(StorageManagerImpl.java:2834)
              
           at 
com.cloud.utils.db.TransactionCallbackNoReturn.doInTransaction(TransactionCallbackNoReturn.java:25)
                                      
           at 
com.cloud.utils.db.Transaction$2.doInTransaction(Transaction.java:50)           
                                                                   
           at com.cloud.utils.db.Transaction.execute(Transaction.java:40)       
                                                                                
 
           at com.cloud.utils.db.Transaction.execute(Transaction.java:47)       
                                                                                
         at 
com.cloud.storage.StorageManagerImpl.registerSystemVmTemplateOnFirstNfsStore(StorageManagerImpl.java:2791)
                                         
           at 
com.cloud.storage.StorageManagerImpl.discoverImageStore(StorageManagerImpl.java:2775)
                                                       
   ```
   
   ##### STEPS TO REPRODUCE
   <!--
   
   For new features, show how the feature would be used.
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   I'm following the simulator docs 
[here](https://docs.cloudstack.apache.org/en/4.16.0.0/developersguide/developer_guide.html?highlight=simulator#using-the-simulator)
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   ~~~
   
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   ##### EXPECTED RESULTS
   <!-- What did you expect to happen when running the steps above? -->
   
   ~~~
   Simulator starts successfully
   ~~~
   
   ##### ACTUAL RESULTS
   <!-- What actually happened? -->
   
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   ~~~
   Simulator fails with NPE on start and ACS won't boot
   ~~~
   


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