- Elasticsearch Guide: other versions:
- Getting Started
- Set up Elasticsearch
- Installing Elasticsearch
- Configuring Elasticsearch
- Important Elasticsearch configuration
- Important System Configuration
- Bootstrap Checks
- Heap size check
- File descriptor check
- Memory lock check
- Maximum number of threads check
- Maximum size virtual memory check
- Max file size check
- Maximum map count check
- Client JVM check
- Use serial collector check
- System call filter check
- OnError and OnOutOfMemoryError checks
- Early-access check
- G1GC check
- Stopping Elasticsearch
- Upgrade Elasticsearch
- Set up X-Pack
- Breaking changes
- Breaking changes in 6.0
- Aggregations changes
- Analysis changes
- Cat API changes
- Clients changes
- Cluster changes
- Document API changes
- Indices changes
- Ingest changes
- Java API changes
- Mapping changes
- Packaging changes
- Percolator changes
- Plugins changes
- Reindex changes
- REST changes
- Scripting changes
- Search and Query DSL changes
- Settings changes
- Stats and info changes
- Breaking changes in 6.0
- X-Pack Breaking Changes
- API Conventions
- Document APIs
- Search APIs
- Aggregations
- Metrics Aggregations
- Avg Aggregation
- Cardinality Aggregation
- Extended Stats Aggregation
- Geo Bounds Aggregation
- Geo Centroid Aggregation
- Max Aggregation
- Min Aggregation
- Percentiles Aggregation
- Percentile Ranks Aggregation
- Scripted Metric Aggregation
- Stats Aggregation
- Sum Aggregation
- Top Hits Aggregation
- Value Count Aggregation
- Bucket Aggregations
- Adjacency Matrix Aggregation
- Children Aggregation
- Date Histogram Aggregation
- Date Range Aggregation
- Diversified Sampler Aggregation
- Filter Aggregation
- Filters Aggregation
- Geo Distance Aggregation
- GeoHash grid Aggregation
- Global Aggregation
- Histogram Aggregation
- IP Range Aggregation
- Missing Aggregation
- Nested Aggregation
- Range Aggregation
- Reverse nested Aggregation
- Sampler Aggregation
- Significant Terms Aggregation
- Significant Text Aggregation
- Terms Aggregation
- Pipeline Aggregations
- Avg Bucket Aggregation
- Derivative Aggregation
- Max Bucket Aggregation
- Min Bucket Aggregation
- Sum Bucket Aggregation
- Stats Bucket Aggregation
- Extended Stats Bucket Aggregation
- Percentiles Bucket Aggregation
- Moving Average Aggregation
- Cumulative Sum Aggregation
- Bucket Script Aggregation
- Bucket Selector Aggregation
- Serial Differencing Aggregation
- Matrix Aggregations
- Caching heavy aggregations
- Returning only aggregation results
- Aggregation Metadata
- Returning the type of the aggregation
- Metrics Aggregations
- Indices APIs
- Create Index
- Delete Index
- Get Index
- Indices Exists
- Open / Close Index API
- Shrink Index
- Rollover Index
- Put Mapping
- Get Mapping
- Get Field Mapping
- Types Exists
- Index Aliases
- Update Indices Settings
- Get Settings
- Analyze
- Index Templates
- Indices Stats
- Indices Segments
- Indices Recovery
- Indices Shard Stores
- Clear Cache
- Flush
- Refresh
- Force Merge
- cat APIs
- Cluster APIs
- Query DSL
- Mapping
- Analysis
- Anatomy of an analyzer
- Testing analyzers
- Analyzers
- Normalizers
- Tokenizers
- Token Filters
- Standard Token Filter
- ASCII Folding Token Filter
- Flatten Graph Token Filter
- Length Token Filter
- Lowercase Token Filter
- Uppercase Token Filter
- NGram Token Filter
- Edge NGram Token Filter
- Porter Stem Token Filter
- Shingle Token Filter
- Stop Token Filter
- Word Delimiter Token Filter
- Word Delimiter Graph Token Filter
- Stemmer Token Filter
- Stemmer Override Token Filter
- Keyword Marker Token Filter
- Keyword Repeat Token Filter
- KStem Token Filter
- Snowball Token Filter
- Phonetic Token Filter
- Synonym Token Filter
- Synonym Graph Token Filter
- Compound Word Token Filters
- Reverse Token Filter
- Elision Token Filter
- Truncate Token Filter
- Unique Token Filter
- Pattern Capture Token Filter
- Pattern Replace Token Filter
- Trim Token Filter
- Limit Token Count Token Filter
- Hunspell Token Filter
- Common Grams Token Filter
- Normalization Token Filter
- CJK Width Token Filter
- CJK Bigram Token Filter
- Delimited Payload Token Filter
- Keep Words Token Filter
- Keep Types Token Filter
- Classic Token Filter
- Apostrophe Token Filter
- Decimal Digit Token Filter
- Fingerprint Token Filter
- Minhash Token Filter
- Character Filters
- Modules
- Index Modules
- Ingest Node
- Pipeline Definition
- Ingest APIs
- Accessing Data in Pipelines
- Handling Failures in Pipelines
- Processors
- Append Processor
- Convert Processor
- Date Processor
- Date Index Name Processor
- Fail Processor
- Foreach Processor
- Grok Processor
- Gsub Processor
- Join Processor
- JSON Processor
- KV Processor
- Lowercase Processor
- Remove Processor
- Rename Processor
- Script Processor
- Set Processor
- Split Processor
- Sort Processor
- Trim Processor
- Uppercase Processor
- Dot Expander Processor
- Monitoring Elasticsearch
- X-Pack APIs
- Info API
- Explore API
- Machine Learning APIs
- Close Jobs
- Create Datafeeds
- Create Jobs
- Delete Datafeeds
- Delete Jobs
- Delete Model Snapshots
- Flush Jobs
- Get Buckets
- Get Categories
- Get Datafeeds
- Get Datafeed Statistics
- Get Influencers
- Get Jobs
- Get Job Statistics
- Get Model Snapshots
- Get Records
- Open Jobs
- Post Data to Jobs
- Preview Datafeeds
- Revert Model Snapshots
- Start Datafeeds
- Stop Datafeeds
- Update Datafeeds
- Update Jobs
- Update Model Snapshots
- Security APIs
- Watcher APIs
- Migration APIs
- Deprecation Info APIs
- Definitions
- X-Pack Commands
- How To
- Testing
- Glossary of terms
- Release Notes
- X-Pack Release Notes
WARNING: Version 6.0 of Elasticsearch has passed its EOL date.
This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.
cat nodes
editcat nodes
editThe nodes
command shows the cluster topology. For example
GET /_cat/nodes?v
Might look like:
ip heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name 127.0.0.1 65 99 42 3.07 mdi * mJw06l1
The first few columns (ip
, heap.percent
, ram.percent
, cpu
, load_*
) tell
you where your nodes live and give a quick picture of performance stats.
The last (node.role
, master
, and name
) columns provide ancillary
information that can often be useful when looking at the cluster as a whole,
particularly large ones. How many master-eligible nodes do I have?
The nodes
API accepts an additional URL parameter full_id
accepting true
or false
. The purpose of this parameter is to format the ID field (if
requested with id
or nodeId
) in its full length or in abbreviated form (the
default).
Columns
editBelow is an exhaustive list of the existing headers that can be
passed to nodes?h=
to retrieve the relevant details in ordered
columns. If no headers are specified, then those marked to Appear
by Default will appear. If any header is specified, then the defaults
are not used.
Aliases can be used in place of the full header name for brevity.
Columns appear in the order that they are listed below unless a
different order is specified (e.g., h=pid,id
versus h=id,pid
).
When specifying headers, the headers are not placed in the output
by default. To have the headers appear in the output, use verbose
mode (v
). The header name will match the supplied value (e.g.,
pid
versus p
). For example:
GET /_cat/nodes?v&h=id,ip,port,v,m
Might look like:
id ip port v m veJR 127.0.0.1 59938 6.0.1 *
Header | Alias | Appear by Default | Description | Example |
---|---|---|---|---|
|
|
No |
Unique node ID |
k0zy |
|
|
No |
Process ID |
13061 |
|
|
Yes |
IP address |
127.0.1.1 |
|
|
No |
Bound transport port |
9300 |
|
|
No |
Bound http address |
127.0.0.1:9200 |
|
|
No |
Elasticsearch version |
6.0.1 |
|
|
No |
Elasticsearch Build hash |
5c03844 |
|
|
No |
Running Java version |
1.8.0 |
|
|
No |
Total disk space |
458.3gb |
|
|
No |
Used disk space |
259.8gb |
|
|
No |
Available disk space |
198.4gb |
|
|
No |
Used disk space percentage |
56.71 |
|
|
No |
Used heap |
311.2mb |
|
|
Yes |
Used heap percentage |
7 |
|
|
No |
Maximum configured heap |
1015.6mb |
|
|
No |
Used total memory |
513.4mb |
|
|
Yes |
Used total memory percentage |
47 |
|
|
No |
Total memory |
2.9gb |
|
|
No |
Used file descriptors |
123 |
|
|
Yes |
Used file descriptors percentage |
1 |
|
|
No |
Maximum number of file descriptors |
1024 |
|
No |
Recent system CPU usage as percent |
12 |
|
|
|
No |
Most recent load average |
0.22 |
|
|
No |
Load average for the last five minutes |
0.78 |
|
|
No |
Load average for the last fifteen minutes |
1.24 |
|
|
No |
Node uptime |
17.3m |
|
|
Yes |
Master eligible node (m); Data node (d); Ingest node (i); Coordinating node only (-) |
mdi |
|
|
Yes |
Elected master (*); Not elected master (-) |
* |
|
|
Yes |
Node name |
I8hydUG |
|
|
No |
Size of completion |
0b |
|
|
No |
Used fielddata cache memory |
0b |
|
|
No |
Fielddata cache evictions |
0 |
|
|
No |
Used query cache memory |
0b |
|
|
No |
Query cache evictions |
0 |
|
|
No |
Used request cache memory |
0b |
|
|
No |
Request cache evictions |
0 |
|
|
No |
Request cache hit count |
0 |
|
|
No |
Request cache miss count |
0 |
|
|
No |
Number of flushes |
1 |
|
|
No |
Time spent in flush |
1 |
|
|
No |
Number of current get operations |
0 |
|
|
No |
Time spent in get |
14ms |
|
|
No |
Number of get operations |
2 |
|
|
No |
Time spent in successful gets |
14ms |
|
|
No |
Number of successful get operations |
2 |
|
|
No |
Time spent in failed gets |
0s |
|
|
No |
Number of failed get operations |
1 |
|
|
No |
Number of current deletion operations |
0 |
|
|
No |
Time spent in deletions |
2ms |
|
|
No |
Number of deletion operations |
2 |
|
|
No |
Number of current indexing operations |
0 |
|
|
No |
Time spent in indexing |
134ms |
|
|
No |
Number of indexing operations |
1 |
|
|
No |
Number of failed indexing operations |
0 |
|
|
No |
Number of current merge operations |
0 |
|
|
No |
Number of current merging documents |
0 |
|
|
No |
Size of current merges |
0b |
|
|
No |
Number of completed merge operations |
0 |
|
|
No |
Number of merged documents |
0 |
|
|
No |
Size of current merges |
0b |
|
|
No |
Time spent merging documents |
0s |
|
|
No |
Number of refreshes |
16 |
|
|
No |
Time spent in refreshes |
91ms |
|
|
No |
Total script compilations |
17 |
|
|
No |
Total compiled scripts evicted from cache |
6 |
|
|
No |
Current fetch phase operations |
0 |
|
|
No |
Time spent in fetch phase |
37ms |
|
|
No |
Number of fetch operations |
7 |
|
|
No |
Open search contexts |
0 |
|
|
No |
Current query phase operations |
0 |
|
|
No |
Time spent in query phase |
43ms |
|
|
No |
Number of query operations |
9 |
|
|
No |
Open scroll contexts |
2 |
|
|
No |
Time scroll contexts held open |
2m |
|
|
No |
Completed scroll contexts |
1 |
|
|
No |
Number of segments |
4 |
|
|
No |
Memory used by segments |
1.4kb |
|
|
No |
Memory used by index writer |
18mb |
|
|
No |
Memory used by version map |
1.0kb |
|
|
No |
Memory used by fixed bit sets for nested object field types and type filters for types referred in |
1.0kb |
|
|
No |
Number of current suggest operations |
0 |
|
|
No |
Time spent in suggest |
0 |
|
|
No |
Number of suggest operations |
0 |
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