Elasticsearch Integration Horizon can persist/forward certain data to Elasticsearch. The following sections describe the configuration possibilities as well as the available features. Internally, all Elasticsearch integrations use the Jest library to access the Elasticsearch REST interface. Configuration The location of the configuration file depends on the feature. For flows, find it in $OPENNMS_HOME/etc/org.opennms.features.flows.persistence.elastic.cfg. You can set the following properties: Property Default Description Required elasticUrl http://localhost:9200 URL(s) to Elasticsearch nodes. Can either point directly to REST API or seed nodes. The format is: <host>:<port>. Comma separate multiple values. Optional elasticIndexStrategy daily Index strategy for data. Allowed values: yearly, monthly, daily, hourly. globalElasticUser none Username to use for all nodes, when X-Pack Security is configured. globalElasticPassword none Password to use for all nodes, when X-Pack Security is configured. ignoreCertificates false Set this to ignore HTTPS/SSL/TLS certificates. defaultMaxTotalConnectionPerRoute <available processors> * 2 Sets the default maximum connections per route. Negative values are ignored. maxTotalConnection <max connections per route> * 3 Sets the default maximum total connections. Negative values are ignored. nodeDiscovery false Enable/disable node discovery. Valid values are true|false. nodeDiscoveryFrequency none Defines the frequency, in seconds, in which the nodes are rediscovered. Must be set, if discovery=true proxy none Defines a proxy server for communicating with your Elasticsearch cluster. Must be a valid URL. httpCompression none Defines that HTTP compression is enabled. retries 0 Defines how many times an operation is retried before considered failed. retryCooldown 500 Defines the cool-down in ms to wait before retrying. Value of 0 means no cool-down. Value must be >= 0. connTimeout 5000 Defines the connection timeout in ms. readTimeout 30000 Defines the read timeout in ms. bulkRetryCount 5 Defines the number of retries performed before a bulk operation is considered failed. When bulk operations fail, only the failed items are retried. settings.index.number_of_shards none The number of primary shards that an index should have. Refer to Elasticsearch Reference → Index Modules for more details. settings.index.number_of_replicas none The number of replicas each primary shard has. Refer to Elasticsearch Reference → Index Modules for more details. settings.index.refresh_interval none How often to perform a refresh operation, which makes recent changes to the index visible to search. Refer to Elasticsearch Reference → Index Modules for more details. settings.index.routing_partition_size none The number of shards a custom routing value can go to. Refer to Elasticsearch Reference → Index Modules for more details. indexPrefix none Prefix is prepended to the index and template names. Used in cases where you want to share the same Elasticsearch cluster with many Horizon instances. If a configuration management tool is used, the properties file can be created and is used as startup configuration If credentials are provided, preemptive authorization is used for all defined Elasticsearch nodes. Configuration example to access Elasticsearch elasticUrl=http://elastic:9200 elasticIndexStrategy=daily globalElasticUser=elastic globalElasticPassword=changeme Credentials It is possible to define credentials for each Elasticsearch node individually. Credentials for each node must be stored in $OPENNMS_HOME/etc/elastic-credentials.xml. Custom credentials <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <elastic-credentials> <credentials url="http://localhost:9200" username="ulf" password="ulf" /> <credentials url="https://10.10.0.1:9333" username="ulf" password="flu" /> </elastic-credentials> Credentials are globally defined and will be used by all features that connect to the specified URLs. sFlow Feature Matrix