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6.1 Administration
This section describes how to manage the nodes and services that make up a cluster.
Monitoring the Cluster
This section describes how to monitor the health and performance of a MapR cluster.
Using MapR Monitoring (Spyglass Initiative)
MapR Monitoring (part of the Spyglass initiative) provides the ability to collect, store, and view metrics and logs for nodes, services, and jobs/applications.
Log Aggregation and Storage
Fluentd uses a round-robin approach when writing logs to Elasticsearch nodes. In the event that an Elasticsearch node in unavailable, Fluentd can fail over log storage to another Elasticsearch node.
Configure Log Retention
By default, Elasticsearch indexes 2 days of logs. Based on your requirements, you can configure a different retention period for Elasticsearch.
Configure Purge Duration
Based on your requirements, you can configure a purge duration for Elasticsearch.

Configure Purge Duration

Based on your requirements, you can configure a purge duration for Elasticsearch.

To update the purge duration on node with installed Elasticsearch 6.5.3, run the following command:

/opt/mapr/elasticsearch/elasticsearch-<Version>/usr/share/elasticsearch/bin/es_cluster_mgmt.sh --purgeAge <newValue>

This command will automatically update the delete_indices.yml file. This change updates only the unit_count value to newValue, without changing the unit value.

(Topic last modified: 2019-03-26)