Elasticsearch

Overview

This plugin collects metrics from the Elasticsearch API using the following endpoints:

Additionally, the plugin queries /_cat/nodes?format=json&h=name,master,http to perform dynamic master detection.

This integration works with any Elasticsearch version, and is continuously tested against ES 1.x through 7.x.

Special features

Elasticsearch features include intelligent elected master detection and custom queries support.

Intelligent elected master detection

The Elasticsearch collector supports the Elasticsearch (ES) master election feature. The master election feature is useful in situations where each ES node has a SolarWinds Snap Agent with an Elasticsearch collector enabled. When this deployment method is used, each Snap Agent will report metrics for the entire ES cluster (as reported by the ES API) by default. This could flood the network with duplicate metrics collected by each agent.

To prevent this, the Elasticsearch collector includes a dedicated master_only option. When enabled, the master_only option tells the collector the data should only be collected and reported when SWISnap is running on a master node (that supports dynamic master election). Any Elasticsearch collector running on a non-master ES node will not collect metrics.

By default, the master_only option is disabled, allowing the Elasticsearch collector to collect metrics from the entire cluster, regardless of which node hosts the collector.

Custom queries support

This feature allows you to leverage the _cat ES API endpoint. You can specify as many custom queries as required. These queries are automatically converted to metrics that will be available in the AppOptics dashboards.

See the example taskfile for examples of predefined sample queries.

Setup

This integration is included as part of a SWI collector. The SWI collector bundles several collectors into one integrated binary.

The elasticsearch plugin is included with the SolarWinds Snap Agent by default. This section describes how to enable the plugin for an agent instance.

With Snap Agent version 4.5.0 and later, this plugin was upgraded to use the v2 plugins framework. If you are running v1 of the collector, see AppOptics Snap Agent 4.4.0 documentation.

To migrate to the v2 plugins framework, update Snap Agent to the latest version and see Migrate from v1 to v2 appoptics publisher plugins.

Prerequisites

This plugin requires that Elasticsearch is running and its API is available from the host where the plugin is installed. You can customize the Network section in the Elasticsearch configuration file so it applies to your deployment. This file is typically located at /etc/elasticsearch/elasticsearch.yml.

The following illustration shows the Network section in the configuration file.

...
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: 192.168.0.100

#
# Set a custom port for HTTP:
#
http.port: 9200

#
# For more information, see the network module documentation.
...

Configuration

The agent includes an example task manifest file with a predefined task configuration file. These files can help you get started with collecting Elasticsearch metrics. When the task configuration is enabled, the Snap Agent loads the plugin when required.

To enable the task configuration:

Make a copy of the elasticsearch example configuration file (task-elasticsearch.yaml.example) and change the file name to task-elasticsearch.yaml.

sudo cp -p /opt/SolarWinds/Snap/etc/tasks-autoload.d/task-elasticsearch.yaml.example /opt/SolarWinds/Snap/etc/tasks-autoload.d/task-elasticsearch.yaml

(Optional) Edit the /opt/SolarWinds/Snap/etc/tasks-autoload.d/task-elasticsearch.yaml task manifest file so it matches your custom settings file.

---
version: 2

schedule:
  tyupe: cron
  interfal: "0 * * * * *"
  
plugins:
  - plugin_name: swi
  
  config:
  elasticsearch:
      ## ElasticSearch API endpoint
      ## should correspond to the network.host setting in elastic search configuration (eg /etc/elasticsearch/elasticsearch.yml)
      ## Defaults to "127.0.0.1"
      # host: "127.0.0.1"
      
      ## ElasticSearch API port
      ##should correspond to the http.port setting in elastic search configuration (eg /etc/elasticsearch/elasticsearch.yml)
      ## Defaults to 9200
      # port: 9200
      
      ## Communication scheme
      ## Defaults to "http"
      # scheme: https

      ## Credentials, if any
      ## Defaults to empty
      # user: admin
      # password: ""
      
      ## ElasticSearch API timeout
      ## Defaults to 5s
      # timeout: 5s
      
      ## Elasticsearch Node hostname
      ## Used only for master node detection, very useful on older ES versions that respond with fewer API data
      ## NOTE: Set to this current node name (from the ES point of view), not to the master node hostname!
      ## Defaults to "" (empty string)
      # hostname: ""
      
      ## Set whether the data should be collected only if SWISnap is running on a master node (supports dynamic master selection)
      ## Useful with larger setups with runtime master election enabled and swisnap installed on every ES node, as
      ## without this setting every swisnap instance will report metrics for the whole cluster (the same way as ES API does)
      ## Defaults to false
      # master_only: true
      
      ## Custom queries, if any
      ## Query
      ## You can specify any (absolute) query that's acceptable by the ElasticSearch API but the requirement here
      ## is that each query has to respond with JSON that will then be "flattened" returning every value as a metric
      ## Prefix
      ## This is an optional string parameter that will be prepended to each metric just after the main /elasticsearch/ segment
      custom_queries:
       - query: "/_cat/recovery?active_only=true&v&format=json" 
         prefix: recovery

       - query: "/_cat/snapshots/s3_backup?format=json"
         prefix: snapshots
         
       - query: "/_cat/shards?format=json&h=index,shard,prirep,state,unassigned.reason"
         prefix: shards
         
      publish:
        - plugin_name: publisher-appoptics

Restart the agent.
```
sudo service swisnapd restart
```
Enable the Elasticsearch plugin in the AppOptics user interface.

If you completed these steps successfully, the Elasticsearch plugin is displayed on the Integrations page as a host agent plugin. If the plugin is not displayed on the page, see Troubleshooting Linux.

Select the Elasticsearch plugin to open the configuration menu in the user interface, and then enable the plugin. When completed, the elasticsearch metrics display on the dashboard.

Metrics and Tags

This plugin receives the Elasticsearch API JSON responses and converts (flattening the key path) the responses directly to the AppOptics metrics format with no additional processing. The same process also applies to the custom queries feature.

One exception to this rule is the cluster status metrics, which are being converted to the numerical enum form and tagged with the textual representation.

Some metrics may be automatically tagged with the following additional meta information:

version_id
name_id
plugin_id
node_id
device_id
processor_id
module_id

The table below lists each of the metrics gathered from the status endpoint.

Default Metrics

Namespace	Description
elasticsearch.cluster.indices.shards_total	Total number of all shards
elasticsearch.cluster.initializing_shards	Number of shards that are currently initializing
elasticsearch.cluster.nodes.count.coordinating_only	Total number of coordinating nodes in the cluster
elasticsearch.cluster.nodes.count.data	Total number of data nodes in the cluster
elasticsearch.cluster.nodes.count.ingest	Total number of ingest nodes in the cluster
elasticsearch.cluster.nodes.count.master	Total number of master nodes in the cluster
elasticsearch.cluster.nodes.fs.disk_reads	Total amount of data read from disk
elasticsearch.cluster.nodes.fs.disk_writes	Total amount of data written to disk
elasticsearch.cluster.relocating_shards	Number of shards that are currently relocating
elasticsearch.cluster.status	Elasticsearch cluster health status as a number (red = 1, yellow = 2, green = 3)
elasticsearch.cluster.unassigned_shards	Number of shards that are not assigned to a node
elasticsearch.nodes.fs.io.read_operations	Total number of read operations
elasticsearch.nodes.fs.io.write_operations	Total number of write operations
elasticsearch.nodes.indexing.stats.index_current	Instantaneous indexing count
elasticsearch.nodes.indexing.stats.index_failed	Total count of failed indexing
elasticsearch.nodes.indexing.stats.index_time	Instantaneous indexing time (in ms)
elasticsearch.nodes.indexing.stats.index_total	Incrementing indexing count
elasticsearch.nodes.jvm.gc.collection.count	Java Garbage Collection (GC) stats, per node
elasticsearch.nodes.jvm.gc.collection.time	Java GC stats, per node
elasticsearch.nodes.jvm.mem.heap_used_percent	Percentage of used JVM heap
elasticsearch.nodes.os.cpu.percent	Percent value of CPU usage for each node
elasticsearch.nodes.search.stats.fetch_time	Instantaneous search fetching time (in ms)
elasticsearch.nodes.search.stats.query_current	Instantaneous searches count
elasticsearch.nodes.search.stats.query_time	Instantaneous search querying time (in ms)
elasticsearch.nodes.search.stats.query_total	Incrementing searches count

Default Metric Tags

All Elasticsearch metrics are tagged with hostname. Rather than using this tag, SolarWinds recommends using the @host alias. If you are using dynamic metrics, the server name or hostname and port from elasticsearch will be added as a tag.

See the exemplary task file provided with the plugin for information about dynamic metrics.

Optional Metrics

You can activate the optional metrics by editing the task yaml file. See SolarWinds Snap Agent Task File for details.

Metrics group	Description
indices	Includes indice statistics about size, document count, indexing and deletion times, search times, field cache size, merges, and flushes
os	Includes operating system statistics, load average, memory, and swap details
process	Includes process statistics, memory consumption, CPU usage, and open file descriptors
jvm	Includes JVM statistics, memory pool information, garbage collection, buffer pools, and number of loaded and unloaded classes
thread_pool	Includes statistics about each thread pool, including the current size, queue, and rejected tasks
fs	Includes file system information, data path, free disk space, and read/write statistics
http	Includes HTTP connection information
breaks	Includes statistics about the field data circuit breaker
script	Computes the grade statistics based on a script

All available metrics

Namespace
elasticsearch.cluster.active_primary_shards
elasticsearch.cluster.active_shards
elasticsearch.cluster.active_shards_percent_as_number
elasticsearch.cluster.delayed_unassigned_shards
elasticsearch.cluster.indices.completion_size
elasticsearch.cluster.indices.count
elasticsearch.cluster.indices.docs_count
elasticsearch.cluster.indices.docs_deleted
elasticsearch.cluster.indices.field_evictions
elasticsearch.cluster.indices.field_size
elasticsearch.cluster.indices.filter_cache_evictions
elasticsearch.cluster.indices.filter_cache_size
elasticsearch.cluster.indices.id_cache_size
elasticsearch.cluster.indices.shards_primaries
elasticsearch.cluster.indices.shards_replication
elasticsearch.cluster.indices.shards_total
elasticsearch.cluster.indices.store_size
elasticsearch.cluster.initializing_shards
elasticsearch.cluster.nodes.count.coordinating_only
elasticsearch.cluster.nodes.count.data
elasticsearch.cluster.nodes.count.ingest
elasticsearch.cluster.nodes.count.master
elasticsearch.cluster.nodes.count.total
elasticsearch.cluster.nodes.fs.available
elasticsearch.cluster.nodes.fs.disk_io_op
elasticsearch.cluster.nodes.fs.disk_io_size
elasticsearch.cluster.nodes.fs.disk_read_size
elasticsearch.cluster.nodes.fs.disk_reads
elasticsearch.cluster.nodes.fs.disk_write_size
elasticsearch.cluster.nodes.fs.disk_writes
elasticsearch.cluster.nodes.fs.free
elasticsearch.cluster.nodes.fs.total
elasticsearch.cluster.nodes.jvm.max_uptime
elasticsearch.cluster.nodes.jvm.threads
elasticsearch.cluster.nodes.os.cpu.cache_size
elasticsearch.cluster.nodes.os.cpu.cache_size_in_bytes
elasticsearch.cluster.nodes.os.cpu.cores_per_socket
elasticsearch.cluster.nodes.os.cpu.count
elasticsearch.cluster.nodes.os.cpu.mhz
elasticsearch.cluster.nodes.os.cpu.total_cores
elasticsearch.cluster.nodes.os.cpu.total_sockets
elasticsearch.cluster.nodes.os.mem_total
elasticsearch.cluster.nodes.process_cpu_percent
elasticsearch.cluster.nodes.process_open_file_descriptors
elasticsearch.cluster.number_of_data_nodes
elasticsearch.cluster.number_of_in_flight_fetch
elasticsearch.cluster.number_of_nodes
elasticsearch.cluster.number_of_pending_tasks
elasticsearch.cluster.relocating_shards
elasticsearch.cluster.status
elasticsearch.cluster.task_max_waiting_in_queue_millis
elasticsearch.cluster.unassigned_shards
elasticsearch.nodes.breakers.estimated.estimated_size
elasticsearch.nodes.breakers.limit.limit_size
elasticsearch.nodes.breakers.overhead
elasticsearch.nodes.breakers.tripped
elasticsearch.nodes.completion.stats.fields.size
elasticsearch.nodes.completion.stats.size
elasticsearch.nodes.discovery.stats.committed
elasticsearch.nodes.discovery.stats.pending
elasticsearch.nodes.discovery.stats.total
elasticsearch.nodes.docs.stats.count
elasticsearch.nodes.docs.stats.deleted
elasticsearch.nodes.fields.stats.evictions
elasticsearch.nodes.fields.stats.fields.memory_size
elasticsearch.nodes.fields.stats.memory_size
elasticsearch.nodes.flush.stats.total
elasticsearch.nodes.flush.stats.total_time
elasticsearch.nodes.fs.available
elasticsearch.nodes.fs.free
elasticsearch.nodes.fs.io.operations
elasticsearch.nodes.fs.io.read_kilobytes
elasticsearch.nodes.fs.io.read_operations
elasticsearch.nodes.fs.io.write_kilobytes
elasticsearch.nodes.fs.io.write_operations
elasticsearch.nodes.fs.total
elasticsearch.nodes.get.stats.current
elasticsearch.nodes.get.stats.exists
elasticsearch.nodes.get.stats.exists_time
elasticsearch.nodes.get.stats.missing
elasticsearch.nodes.get.stats.missing_time
elasticsearch.nodes.get.stats.time
elasticsearch.nodes.get.stats.total
elasticsearch.nodes.http.current_open
elasticsearch.nodes.http.total_opened
elasticsearch.nodes.indexing.stats.delete_current
elasticsearch.nodes.indexing.stats.delete_time
elasticsearch.nodes.indexing.stats.delete_total
elasticsearch.nodes.indexing.stats.index_current
elasticsearch.nodes.indexing.stats.index_failed
elasticsearch.nodes.indexing.stats.index_time
elasticsearch.nodes.indexing.stats.index_total
elasticsearch.nodes.indexing.stats.noop_update_total
elasticsearch.nodes.ingest.stats.count
elasticsearch.nodes.ingest.stats.current
elasticsearch.nodes.ingest.stats.failed
elasticsearch.nodes.ingest.stats.time
elasticsearch.nodes.jvm.buffers.count
elasticsearch.nodes.jvm.buffers.total_capacity
elasticsearch.nodes.jvm.current_loaded_count
elasticsearch.nodes.jvm.gc.collection.count
elasticsearch.nodes.jvm.gc.collection.time
elasticsearch.nodes.jvm.mem.direct_max
elasticsearch.nodes.jvm.mem.heap_committed
elasticsearch.nodes.jvm.mem.heap_init
elasticsearch.nodes.jvm.mem.heap_max
elasticsearch.nodes.jvm.mem.heap_max
elasticsearch.nodes.jvm.mem.heap_used
elasticsearch.nodes.jvm.mem.heap_used_percent
elasticsearch.nodes.jvm.mem.non_heap_committed
elasticsearch.nodes.jvm.mem.non_heap_init
elasticsearch.nodes.jvm.mem.non_heap_max
elasticsearch.nodes.jvm.mem.non_heap_used
elasticsearch.nodes.jvm.peak_count
elasticsearch.nodes.jvm.threads_count
elasticsearch.nodes.jvm.total_loaded_count
elasticsearch.nodes.jvm.total_unloaded_count
elasticsearch.nodes.jvm.uptime
elasticsearch.nodes.merge.stats.current
elasticsearch.nodes.merge.stats.current_docs
elasticsearch.nodes.merge.stats.current_size
elasticsearch.nodes.merge.stats.total
elasticsearch.nodes.merge.stats.total_auto_throttle
elasticsearch.nodes.merge.stats.total_docs
elasticsearch.nodes.merge.stats.total_size
elasticsearch.nodes.merge.stats.total_stopped_time
elasticsearch.nodes.merge.stats.total_throttled_time
elasticsearch.nodes.merge.stats.total_time
elasticsearch.nodes.os.allocated_processors
elasticsearch.nodes.os.available_processors
elasticsearch.nodes.os.cpu.cpu.load_average
elasticsearch.nodes.os.cpu.percent
elasticsearch.nodes.os.mem.free
elasticsearch.nodes.os.mem.free_percent
elasticsearch.nodes.os.mem.total
elasticsearch.nodes.os.mem.used
elasticsearch.nodes.os.mem.used_percent
elasticsearch.nodes.os.refresh_interval
elasticsearch.nodes.os.swap.free
elasticsearch.nodes.os.swap.total
elasticsearch.nodes.os.swap.used
elasticsearch.nodes.percolate.stats.current
elasticsearch.nodes.percolate.stats.memory_size
elasticsearch.nodes.percolate.stats.queries
elasticsearch.nodes.percolate.stats.time
elasticsearch.nodes.percolate.stats.total
elasticsearch.nodes.process.cpu.percent
elasticsearch.nodes.process.cpu.total
elasticsearch.nodes.process.max_file_descriptors
elasticsearch.nodes.process.mem.total_virtual
elasticsearch.nodes.process.open_file_descriptors
elasticsearch.nodes.process.timestamp
elasticsearch.nodes.processes.id
elasticsearch.nodes.processes.refresh_interval
elasticsearch.nodes.query.cache.cache_count
elasticsearch.nodes.query.cache.cache_size
elasticsearch.nodes.query.cache.evictions
elasticsearch.nodes.query.cache.hit_count
elasticsearch.nodes.query.cache.memory_size
elasticsearch.nodes.query.cache.miss_count
elasticsearch.nodes.query.cache.total_count
elasticsearch.nodes.recovery.stats.current_as_source
elasticsearch.nodes.recovery.stats.current_as_target
elasticsearch.nodes.refresh.stats.total
elasticsearch.nodes.refresh.stats.total_time
elasticsearch.nodes.request.cache.evictions
elasticsearch.nodes.request.cache.hit_count
elasticsearch.nodes.request.cache.memory_size
elasticsearch.nodes.request.cache.miss_count
elasticsearch.nodes.script.stats.cache_evictions
elasticsearch.nodes.script.stats.compilations
elasticsearch.nodes.search.stats.fetch_current
elasticsearch.nodes.search.stats.fetch_time
elasticsearch.nodes.search.stats.fetch_total
elasticsearch.nodes.search.stats.open_contexts
elasticsearch.nodes.search.stats.query_current
elasticsearch.nodes.search.stats.query_time
elasticsearch.nodes.search.stats.query_total
elasticsearch.nodes.search.stats.scroll_current
elasticsearch.nodes.search.stats.scroll_time
elasticsearch.nodes.search.stats.scroll_total
elasticsearch.nodes.segments.stats.count
elasticsearch.nodes.segments.stats.doc_values_memory
elasticsearch.nodes.segments.stats.fixed_bit_set_memory
elasticsearch.nodes.segments.stats.index_writer_max_memory
elasticsearch.nodes.segments.stats.index_writer_memory
elasticsearch.nodes.segments.stats.memory
elasticsearch.nodes.segments.stats.norms_memory
elasticsearch.nodes.segments.stats.stored_fields_memory
elasticsearch.nodes.segments.stats.term_vectors_memory
elasticsearch.nodes.segments.stats.terms_memory
elasticsearch.nodes.segments.stats.version_map_memory
elasticsearch.nodes.store.stats.size
elasticsearch.nodes.suggest.stats.current
elasticsearch.nodes.suggest.stats.total
elasticsearch.nodes.suggest.stats.total_time
elasticsearch.nodes.threads.active
elasticsearch.nodes.threads.completed
elasticsearch.nodes.threads.count
elasticsearch.nodes.threads.largest
elasticsearch.nodes.threads.queue
elasticsearch.nodes.threads.rejected
elasticsearch.nodes.total_indexing_buffer
elasticsearch.nodes.translog.stats.operations
elasticsearch.nodes.translog.stats.size
elasticsearch.nodes.transport.rx_count
elasticsearch.nodes.transport.rx_size
elasticsearch.nodes.transport.server_open
elasticsearch.nodes.transport.tx_count
elasticsearch.nodes.transport.tx_size
elasticsearch.nodes.warmer.stats.current
elasticsearch.nodes.warmer.stats.total
elasticsearch.nodes.warmer.stats.total_time

Metric changes

Below are the plugin metric changes from version 8 to version 10. These changes are promoted to defaults.

/elasticsearch/cluster/nodes/count/coordinating_only
/elasticsearch/cluster/nodes/count/data
/elasticsearch/cluster/nodes/count/ingest
/elasticsearch/cluster/nodes/count/master
/elasticsearch/cluster/nodes/fs/disk_reads
/elasticsearch/cluster/nodes/fs/disk_writes
/elasticsearch/nodes/*/fs/io/read_operations
/elasticsearch/nodes/*/fs/io/write_operations
/elasticsearch/nodes/*/indexing/stats/index_current
/elasticsearch/nodes/*/indexing/stats/index_failed
/elasticsearch/nodes/*/indexing/stats/index_time
/elasticsearch/nodes/*/indexing/stats/index_total
/elasticsearch/nodes/*/jvm/gc/collection/*/count
/elasticsearch/nodes/*/jvm/gc/collection/*/time
/elasticsearch/nodes/*/jvm/mem/heap_used_percent
/elasticsearch/nodes/*/os/cpu/percent
/elasticsearch/nodes/*/search/stats/fetch_time
/elasticsearch/nodes/*/search/stats/query_current
/elasticsearch/nodes/*/search/stats/query_time
/elasticsearch/nodes/*/search/stats/query_total

The following metrics are no longer listed as defaults.

/elasticsearch/cluster/active_primary_shards
/elasticsearch/cluster/active_shards
/elasticsearch/cluster/active_shards_percent_as_number
/elasticsearch/cluster/cluster_name
/elasticsearch/cluster/delayed_unassigned_shards
/elasticsearch/cluster/initializing_shards
/elasticsearch/cluster/number_of_data_nodes
/elasticsearch/cluster/number_of_in_flight_fetch
/elasticsearch/cluster/number_of_nodes
/elasticsearch/cluster/number_of_pending_tasks
/elasticsearch/cluster/task_max_waiting_in_queue_millis
/elasticsearch/cluster/unassigned_shards

The following metrics are backwards-incompatible renames of metrics.

/elasticsearch/cluster/nodes/fs/dev -> no longer supported
/elasticsearch/cluster/nodes/fs/dev -> no longer supported
/elasticsearch/cluster/nodes/fs/disk_queue -> no longer supported
/elasticsearch/cluster/nodes/fs/disk_queue -> no longer supported
/elasticsearch/cluster/nodes/fs/disk_service_time -> no longer supported
/elasticsearch/cluster/nodes/fs/disk_service_time -> no longer supported
/elasticsearch/cluster/nodes/fs/mount -> no longer supported
/elasticsearch/cluster/nodes/fs/path -> no longer supported
/elasticsearch/cluster/timed_out -> no longer supported
/elasticsearch/nodes/*/build_hash -> no longer supported
/elasticsearch/nodes/*/host -> no longer supported
/elasticsearch/nodes/*/ip -> no longer supported
/elasticsearch/nodes/*/jvm/jvm/mem/heap_committed -> /elasticsearch/nodes/*/jvm/mem/heap_committed
/elasticsearch/nodes/*/jvm/jvm/mem/heap_max -> /elasticsearch/nodes/*/jvm/mem/heap_max
/elasticsearch/nodes/*/jvm/jvm/mem/heap_used_percent -> /elasticsearch/nodes/*/jvm/mem/heap_used_percent
/elasticsearch/nodes/*/jvm/jvm/mem/heap_used -> /elasticsearch/nodes/*/jvm/mem/heap_used
/elasticsearch/nodes/*/jvm/jvm/mem/non_heap_committed -> /elasticsearch/nodes/*/jvm/mem/non_heap_committed
/elasticsearch/nodes/*/jvm/jvm/mem/non_heap_used -> /elasticsearch/nodes/*/jvm/mem/non_heap_used
/elasticsearch/nodes/*/jvm/jvm/uptime -> /elasticsearch/nodes/*/jvm/uptime
/elasticsearch/nodes/*/name -> no longer supported
/elasticsearch/nodes/*/os/arch -> no longer supported
/elasticsearch/nodes/*/os/name -> no longer supported
/elasticsearch/nodes/*/os/version -> no longer supported
/elasticsearch/nodes/*/threads/*/Count -> /elasticsearch/nodes/*/threads/*/count
/elasticsearch/nodes/*/transport_address -> no longer supported
/elasticsearch/nodes/*/version -> no longer supported
/elasticsearch/nodes/fs/io/read_operations -> /elasticsearch/nodes/*/fs/io/read_operations
/elasticsearch/nodes/fs/io/write_operations -> /elasticsearch/nodes/*/fs/io/write_operations
/elasticsearch/nodes/indexing/stats/index_current -> /elasticsearch/nodes/*/indexing/stats/index_current
/elasticsearch/nodes/indexing/stats/index_failed -> /elasticsearch/nodes/*/indexing/stats/index_failed
/elasticsearch/nodes/indexing/stats/index_total -> /elasticsearch/nodes/*/indexing/stats/index_total
/elasticsearch/nodes/jvm/gc/collection/count -> /elasticsearch/nodes/*/jvm/gc/collection/*/count
/elasticsearch/nodes/jvm/gc/collection/time -> /elasticsearch/nodes/*/jvm/gc/collection/*/time
/elasticsearch/nodes/jvm/jvm/mem/heap_used_percent -> /elasticsearch/nodes/*/jvm/mem/heap_used_percent
/elasticsearch/nodes/os/cpu/percent -> /elasticsearch/nodes/*/os/cpu/percent
/elasticsearch/nodes/search/stats/query_current -> /elasticsearch/nodes/*/search/stats/query_current
/elasticsearch/nodes/search/stats/query_total -> /elasticsearch/nodes/*/search/stats/query_total

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