Reka Thirunavukkarasu created STRATOS-677:
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Summary: Instances are getting spawn when unsubscribing
Key: STRATOS-677
URL: https://issues.apache.org/jira/browse/STRATOS-677
Project: Stratos
Issue Type: Bug
Components: Autoscaler, Cloud Controller, Eventing
Affects Versions: 4.0.0
Reporter: Reka Thirunavukkarasu
Assignee: Reka Thirunavukkarasu
Fix For: 4.1.0
Even after unsubscribing from a cartridge also, instances are getting spawned.
The reason for this is, while the CC terminates instances, if the minimum rule
executed in AS side, then AS will request to spin a new instances as it is
below the minimum count.
In order to make AS aware of the unsubscription, we need to introduce another
state to cluster saying CLUSTER_IN_MAINTENANCE. So that once all the instances
are terminated, cluster can be removed as well as AS can pause the cluster
monitor when it is in maintenance mode. Even this state can be useful when
applying patches or upgrading the cluster.
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