OpenSearch/docs/reference/cat/nodeattrs.asciidoc

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[[cat-nodeattrs]]
== cat nodeattrs
The `nodeattrs` command shows custom node attributes.
["source","sh",subs="attributes,callouts"]
--------------------------------------------------
% curl 192.168.56.10:9200/_cat/nodeattrs
node host ip attr value
Black Bolt epsilon 192.168.1.8 rack rack314
Black Bolt epsilon 192.168.1.8 azone us-east-1
--------------------------------------------------
The first few columns give you basic info per node.
["source","sh",subs="attributes,callouts"]
--------------------------------------------------
node host ip
Black Bolt epsilon 192.168.1.8
Black Bolt epsilon 192.168.1.8
--------------------------------------------------
The attr and value columns can give you a picture of custom node attributes.
[source,sh]
--------------------------------------------------
attr value
rack rack314
azone us-east-1
--------------------------------------------------
[float]
=== Columns
Below 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=attr,value` versus `h=value,attr`).
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:
["source","sh",subs="attributes,callouts"]
--------------------------------------------------
% curl 192.168.56.10:9200/_cat/nodeattrs?v&h=name,pid,attr,value
name pid attr value
Black Bolt 28000 rack rack314
Black Bolt 28000 azone us-east-1
--------------------------------------------------
[cols="<,<,<,<,<",options="header",subs="normal"]
|=======================================================================
|Header |Alias |Appear by Default |Description |Example
|`node`|`name`|Yes|Name of the node|Black Bolt
|`id` |`nodeId` |No |Unique node ID |k0zy
|`pid` |`p` |No |Process ID |13061
|`host` |`h` |Yes |Host name |n1
|`ip` |`i` |Yes |IP address |127.0.1.1
|`port` |`po` |No |Bound transport port |9300
|`attr` | `attr.name` | Yes | Attribute name | rack
|`value` | `attr.value` | Yes | Attribute value | rack123
|=======================================================================