Discovery Service
Overview
The Discovery Service microservice discovers devices for 3 supported types - snmp, ping and vmware. It uses a specific payload as input to discover the devices and the result can be used further for inventory add/update/delete.
Prerequisites
-
A microservices cluster must be setup. Refer to Microservice Cluster Setup.
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Apache Pulsar must be installed. Refer to Apache Pulsar microservice.
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The following core microservices must be installed as per the requirement -
Setup
su - assure1
export NAMESPACE=a1-zone1-pri
export WEBFQDN=<Primary Presentation Web FQDN>
a1helm install discovery-service assure1/discovery-service -n $NAMESPACE --set global.imageRegistry=$WEBFQDN
Default Configuration
| Name | Value | Possible Values | Notes |
|---|---|---|---|
| LOG_LEVEL | INFO | FATAL, ERROR, WARN, INFO, DEBUG | Logging level used by application. |
| REST_API_PORT | 32001 | Integer | Port number of the API |
| PULSAR_DISCOVERY_CALLBACK_OVERRIDE | "" | persistent://assure1/discovery/discovery-service-zoneX | Overrides the value of pulsar topic for discovery callback where all pollers return the result. Example- discovery-service-zone1 |
| PULSAR_DOM_PROCESSOR_OVERRIDE | "" | persistent://assure1/discovery/dom-processor-zoneX | Overrides the value of pulsar topic on which dom processor request to be sent. Example- dom-processor-zone1 |
| PULSAR_PING_CONTROL_OVERRIDE | "" | persistent://assure1/discovery/ping-poller-zoneX | Overrides the value of pulsar topic on which ping poller request to be sent. Example- ping-poller-zone1 |
| PULSAR_SNMP_CONTROL_OVERRIDE | "" | persistent://assure1/discovery/snmp-poller-zoneX | Overrides the value of pulsar topic on which snmp poller request to be sent. Example- snmp-poller-zone1 |
| PULSAR_VMWARE_CONTROL_OVERRIDE | "" | persistent://assure1/discovery/vmware-poller-zoneX | Overrides the value of pulsar topic on which vmware poller request to be sent. Example- vmware-poller-zone1 |
| PING_POLLER_NAME_OVERRIDE | "" | Text | Overrides the default value of PING_POLLER_NAME_OVERRIDE key |
| SNMP_POLLER_NAME_OVERRIDE | "" | Text | Overrides the default value of SNMP_POLLER_NAME_OVERRIDE key |
| VMWARE_POLLER_NAME_OVERRIDE | "" | Text | Overrides the default value of VMWARE_POLLER_NAME_OVERRIDE key |
| REDUNDANCY_POLL_PERIOD | 5 | Integer | How often the secondary service checks to see if the primary is online, in seconds. |
| REDUNDANCY_FAILOVER_THRESHOLD | 4 | Integer | The number of failed polls before the secondary becomes the active application. |
| REDUNDANCY_FALLBACK_THRESHOLD | 1 | Integer | The number of successful polls before the secondary goes back to sleep. |
| VMWARE_API_ENABLED | true | Bool | Enables VmWare Poller integration |
Configurations can be changed by passing the values to the a1helm install prefixed with the configData parent key.
Example of setting the log level to DEBUG
a1helm install ... --set configData.LOG_LEVEL=DEBUG
Example of enabling redundancy
Redundancy will not be enabled by default. To enable this functionality, pass the following to the install command:
a1helm install ... --set redundancy.enabled=true