The Server Manager:
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Monitors the KVM hypervisor and virtual machine status by periodically polling the NOVA API in OpenStack.
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Generates notifications when:
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A hypervisor is down.
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A virtual machine is down or has been turned off.
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Monitors the Rabbit MQ (RMQ) status by the subscription mechanism or by using SNMP to monitor the RMQ process.
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Generates a Down notification when the service subscription is broken or the RMQ service stops.