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While attempting to shutdown the engines in an HA cluster, the service manager process refuses to carry out the shutdown and ignores the stop script.
Users may see the following message in the logs:
INFO com.appian.komodo.admin.route.ManagerActionsRoute - Manager action 'shutdown-cluster' invoked
However the shutdown does not proceed as expected.
Alternatively, if there was an issue with a graceful shutdown, the cluster-stop state is most likely the root cause if every "'shutdown-cluster' invoked" message is immediately followed by a "Cluster shutdown already in progress!" message in the SM log. For example:
INFO com.appian.komodo.admin.route.ManagerActionsRoute - Manager action 'shutdown-cluster' invoked INFO com.appian.komodo.admin.route.ManagerActionsRoute - Cluster shutdown already in progress! INFO com.appian.komodo.admin.route.ManagerActionsRoute - Manager action 'shutdown-cluster' invoked INFO com.appian.komodo.admin.route.ManagerActionsRoute - Cluster shutdown already in progress!
Summary of symptoms:
Typically, a user is trying to shutdown service manager on just one node in an HA configuration, but accidentally does a cluster stop which affects all other service managers in a cluster. SM could also get into this state if there is an issue with an intentional cluster shutdown, but only the engines are restarted and not service manager.
This issue can be remediated by restarting service manager.
This article applies to all versions of Appian running with a High Availability Topology
Last Reviewed: May 2020