Error when scaling from multiple nodes to single node

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We have been trying to adjust the scaling of our application. We went from a single node to 4 nodes. Here we found an issue with some of our session and determined we needed to scale back to a single node so the application can be tested. When going back to a single node it looks as if all 4 nodes are getting destroyed and the application goes down. We see our custom error page and cannot log in to the application. We are not able to restart the application until we scale back up to multiple nodes.  I see the following in our logs. It seems to get hung up on the last log entry Cell 63f6fd44948e destroying container for instance xxxxxxxx-XXXX-XXXX-XXXX-1405 2019-06-13T13:03:03.222865 [CELL/1]   Cell 868c6f0f4291 destroying container for instance xxxxxxxx-XXXX-XXXX-XXXX-65b6 2019-06-13T13:03:03.229861 [CELL/2]   Cell 7cefa0c09a5d destroying container for instance xxxxxxxx-XXXX-XXXX-XXXX-a1b4 2019-06-13T13:03:03.320130 [CELL/3]   Cell 56d7c8eb0cd6 destroying container for instance xxxxxxxx-XXXX-XXXX-XXXX-3b9b 2019-06-13T13:03:04.281616 [CELL/2]   Cell 7cefa0c09a5d successfully destroyed container for instance xxxxxxxx-XXXX-XXXX-XXXX-a1b4 2019-06-13T13:03:04.300217 [CELL/0]   Cell 63f6fd44948e successfully destroyed container for instance xxxxxxxx-XXXX-XXXX-XXXX-1405 2019-06-13T13:03:04.348292 [CELL/1]   Cell 868c6f0f4291 successfully destroyed container for instance xxxxxxxx-XXXX-XXXX-XXXX-65b6 2019-06-13T13:03:04.452812 [CELL/3]   Cell 56d7c8eb0cd6 successfully destroyed container for instance xxxxxxxx-XXXX-XXXX-XXXX-3b9b 2019-06-13T13:05:24.902232 [API/1]   Updated app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 ({"environment_json"=>"[PRIVATE DATA HIDDEN]"}) 2019-06-13T13:05:50.683769 [API/1]   Uploading bits for app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 2019-06-13T13:06:47.075526 [API/1]   Updated app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 ({"environment_json"=>"[PRIVATE DATA HIDDEN]"}) 2019-06-13T13:06:48.695404 [API/0]   Updated app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 ({"environment_json"=>"[PRIVATE DATA HIDDEN]"}) 2019-06-13T13:06:49.916493 [API/0]   Updated app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 ({"state"=>"STOPPED"}) 2019-06-13T13:06:50.764836 [API/0]   Updated app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 ({"buildpack"=>"https://github.com/mendix/cf-mendix-buildpack.git", "command"=>"[PRIVATE DATA HIDDEN]"}) 2019-06-13T13:06:51.256313 [API/1]   Creating build for app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 2019-06-13T13:06:51.577980 [API/1]   Updated app with guid xxxxxxxx-XXXX-XXXX-XXXX-555f6d8bd321 ({"state"=>"STARTED"})   Has anyone encountered this issue before?    Thanks
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1 answers
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Hi Jason,

We have encountered issues with scaling that produced logs that are somewhat similar to the ones in your question; however, the issue disappeared on its own in 15 minutes before the Mendix Support team could trouble-shoot it, and we had a call with them to try to identify the root cause of the issue but the investigation yielded nothing.

I’d suggest contacting them (Mendix Support) if the issue is still there.

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