197 lines
9.1 KiB
Plaintext
197 lines
9.1 KiB
Plaintext
[[cat-nodes]]
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== cat nodes
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The `nodes` command shows the cluster topology. For example
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[source,js]
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--------------------------------------------------
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GET /_cat/nodes?v
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--------------------------------------------------
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// CONSOLE
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Might look like:
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[source,txt]
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--------------------------------------------------
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ip heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
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127.0.0.1 65 99 42 3.07 dim * mJw06l1
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--------------------------------------------------
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// TESTRESPONSE[s/3.07/(\\d+\\.\\d+( \\d+\\.\\d+ (\\d+\\.\\d+)?)?)?/]
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// TESTRESPONSE[s/65 99 42/\\d+ \\d+ \\d+/]
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// TESTRESPONSE[s/[*]/[*]/ s/mJw06l1/.+/ non_json]
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The first few columns (`ip`, `heap.percent`, `ram.percent`, `cpu`, `load_*`) tell
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you where your nodes live and give a quick picture of performance stats.
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The last (`node.role`, `master`, and `name`) columns provide ancillary
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information that can often be useful when looking at the cluster as a whole,
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particularly large ones. How many master-eligible nodes do I have?
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The `nodes` API accepts an additional URL parameter `full_id` accepting `true`
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or `false`. The purpose of this parameter is to format the ID field (if
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requested with `id` or `nodeId`) in its full length or in abbreviated form (the
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default).
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[float]
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=== Columns
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Below is an exhaustive list of the existing headers that can be
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passed to `nodes?h=` to retrieve the relevant details in ordered
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columns. If no headers are specified, then those marked to Appear
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by Default will appear. If any header is specified, then the defaults
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are not used.
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Aliases can be used in place of the full header name for brevity.
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Columns appear in the order that they are listed below unless a
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different order is specified (e.g., `h=pid,id` versus `h=id,pid`).
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When specifying headers, the headers are not placed in the output
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by default. To have the headers appear in the output, use verbose
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mode (`v`). The header name will match the supplied value (e.g.,
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`pid` versus `p`). For example:
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[source,js]
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--------------------------------------------------
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GET /_cat/nodes?v&h=id,ip,port,v,m
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--------------------------------------------------
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// CONSOLE
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Might look like:
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["source","txt",subs="attributes,callouts"]
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--------------------------------------------------
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id ip port v m
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veJR 127.0.0.1 59938 {version} *
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--------------------------------------------------
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// TESTRESPONSE[s/veJR/.+/ s/59938/\\d+/ s/[*]/[*]/ non_json]
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[cols="<,<,<,<,<",options="header",subs="normal"]
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|=======================================================================
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|Header |Alias |Appear by Default |Description |Example
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|`id` |`nodeId` |No |Unique node ID |k0zy
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|`pid` |`p` |No |Process ID |13061
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|`ip` |`i` |Yes |IP address |127.0.1.1
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|`port` |`po` |No |Bound transport port |9300
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|`http_address` |`http`| No |Bound http address | 127.0.0.1:9200
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|`version` |`v` |No |Elasticsearch version |{version}
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|`build` |`b` |No |Elasticsearch Build hash |5c03844
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|`jdk` |`j` |No |Running Java version |1.8.0
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|`disk.total` |`dt`, `diskTotal` |No |Total disk space| 458.3gb
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|`disk.used` |`du`, `diskUsed` |No |Used disk space| 259.8gb
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|`disk.avail` |`d`, `disk`, `diskAvail` |No |Available disk space |198.4gb
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|`disk.used_percent` |`dup`, `diskUsedPercent` |No |Used disk space percentage |56.71
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|`heap.current` |`hc`, `heapCurrent` |No |Used heap |311.2mb
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|`heap.percent` |`hp`, `heapPercent` |Yes |Used heap percentage |7
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|`heap.max` |`hm`, `heapMax` |No |Maximum configured heap |1015.6mb
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|`ram.current` |`rc`, `ramCurrent` |No |Used total memory |513.4mb
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|`ram.percent` |`rp`, `ramPercent` |Yes |Used total memory percentage |47
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|`ram.max` |`rm`, `ramMax` |No |Total memory |2.9gb
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|`file_desc.current` |`fdc`, `fileDescriptorCurrent` |No |Used file
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descriptors |123
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|`file_desc.percent` |`fdp`, `fileDescriptorPercent` |Yes |Used file
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descriptors percentage |1
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|`file_desc.max` |`fdm`, `fileDescriptorMax` |No |Maximum number of file
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descriptors |1024
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|`cpu` | |No |Recent system CPU usage as percent |12
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|`load_1m` |`l` |No |Most recent load average |0.22
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|`load_5m` |`l` |No |Load average for the last five minutes |0.78
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|`load_15m` |`l` |No |Load average for the last fifteen minutes |1.24
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|`uptime` |`u` |No |Node uptime |17.3m
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|`node.role` |`r`, `role`, `nodeRole` |Yes |Master eligible node (m);
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Data node (d); Ingest node (i); Coordinating node only (-) |mdi
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|`master` |`m` |Yes |Elected master (*); Not elected master (-) |*
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|`name` |`n` |Yes |Node name |I8hydUG
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|`completion.size` |`cs`, `completionSize` |No |Size of completion |0b
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|`fielddata.memory_size` |`fm`, `fielddataMemory` |No |Used fielddata
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cache memory |0b
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|`fielddata.evictions` |`fe`, `fielddataEvictions` |No |Fielddata cache
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evictions |0
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|`query_cache.memory_size` |`qcm`, `queryCacheMemory` |No |Used query
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cache memory |0b
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|`query_cache.evictions` |`qce`, `queryCacheEvictions` |No |Query
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cache evictions |0
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|`request_cache.memory_size` |`rcm`, `requestCacheMemory` |No | Used request
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cache memory |0b
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|`request_cache.evictions` |`rce`, `requestCacheEvictions` |No |Request
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cache evictions |0
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|`request_cache.hit_count` |`rchc`, `requestCacheHitCount` |No | Request
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cache hit count |0
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|`request_cache.miss_count` |`rcmc`, `requestCacheMissCount` |No | Request
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cache miss count |0
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|`flush.total` |`ft`, `flushTotal` |No |Number of flushes |1
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|`flush.total_time` |`ftt`, `flushTotalTime` |No |Time spent in flush |1
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|`get.current` |`gc`, `getCurrent` |No |Number of current get
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operations |0
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|`get.time` |`gti`, `getTime` |No |Time spent in get |14ms
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|`get.total` |`gto`, `getTotal` |No |Number of get operations |2
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|`get.exists_time` |`geti`, `getExistsTime` |No |Time spent in
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successful gets |14ms
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|`get.exists_total` |`geto`, `getExistsTotal` |No |Number of successful
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get operations |2
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|`get.missing_time` |`gmti`, `getMissingTime` |No |Time spent in failed
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gets |0s
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|`get.missing_total` |`gmto`, `getMissingTotal` |No |Number of failed
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get operations |1
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|`indexing.delete_current` |`idc`, `indexingDeleteCurrent` |No |Number
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of current deletion operations |0
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|`indexing.delete_time` |`idti`, `indexingDeleteTime` |No |Time spent in
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deletions |2ms
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|`indexing.delete_total` |`idto`, `indexingDeleteTotal` |No |Number of
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deletion operations |2
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|`indexing.index_current` |`iic`, `indexingIndexCurrent` |No |Number
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of current indexing operations |0
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|`indexing.index_time` |`iiti`, `indexingIndexTime` |No |Time spent in
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indexing |134ms
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|`indexing.index_total` |`iito`, `indexingIndexTotal` |No |Number of
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indexing operations |1
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|`indexing.index_failed` |`iif`, `indexingIndexFailed` |No |Number of
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failed indexing operations |0
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|`merges.current` |`mc`, `mergesCurrent` |No |Number of current
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merge operations |0
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|`merges.current_docs` |`mcd`, `mergesCurrentDocs` |No |Number of
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current merging documents |0
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|`merges.current_size` |`mcs`, `mergesCurrentSize` |No |Size of current
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merges |0b
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|`merges.total` |`mt`, `mergesTotal` |No |Number of completed merge
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operations |0
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|`merges.total_docs` |`mtd`, `mergesTotalDocs` |No |Number of merged
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documents |0
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|`merges.total_size` |`mts`, `mergesTotalSize` |No |Size of current
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merges |0b
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|`merges.total_time` |`mtt`, `mergesTotalTime` |No |Time spent merging
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documents |0s
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|`refresh.total` |`rto`, `refreshTotal` |No |Number of refreshes |16
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|`refresh.time` |`rti`, `refreshTime` |No |Time spent in refreshes |91ms
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|`script.compilations` |`scrcc`, `scriptCompilations` |No |Total script compilations |17
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|`script.cache_evictions` |`scrce`, `scriptCacheEvictions` |No |Total compiled scripts evicted from cache |6
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|`search.fetch_current` |`sfc`, `searchFetchCurrent` |No |Current fetch
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phase operations |0
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|`search.fetch_time` |`sfti`, `searchFetchTime` |No |Time spent in fetch
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phase |37ms
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|`search.fetch_total` |`sfto`, `searchFetchTotal` |No |Number of fetch
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operations |7
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|`search.open_contexts` |`so`, `searchOpenContexts` |No |Open search
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contexts |0
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|`search.query_current` |`sqc`, `searchQueryCurrent` |No |Current query
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phase operations |0
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|`search.query_time` |`sqti`, `searchQueryTime` |No |Time spent in query
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phase |43ms
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|`search.query_total` |`sqto`, `searchQueryTotal` |No |Number of query
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operations |9
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|`search.scroll_current` |`scc`, `searchScrollCurrent` |No |Open scroll contexts |2
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|`search.scroll_time` |`scti`, `searchScrollTime` |No |Time scroll contexts held open|2m
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|`search.scroll_total` |`scto`, `searchScrollTotal` |No |Completed scroll contexts |1
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|`segments.count` |`sc`, `segmentsCount` |No |Number of segments |4
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|`segments.memory` |`sm`, `segmentsMemory` |No |Memory used by
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segments |1.4kb
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|`segments.index_writer_memory` |`siwm`, `segmentsIndexWriterMemory` |No
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|Memory used by index writer |18mb
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|`segments.version_map_memory` |`svmm`, `segmentsVersionMapMemory` |No
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|Memory used by version map |1.0kb
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|`segments.fixed_bitset_memory` |`sfbm`, `fixedBitsetMemory` |No
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|Memory used by fixed bit sets for nested object field types and type filters for types referred in `join` fields |1.0kb
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|`suggest.current` |`suc`, `suggestCurrent` |No |Number of current suggest operations |0
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|`suggest.time` |`suti`, `suggestTime` |No |Time spent in suggest |0
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|`suggest.total` |`suto`, `suggestTotal` |No |Number of suggest operations |0
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|=======================================================================
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