environment
editenvironment
editThis is a community-maintained plugin! It does not ship with Logstash by default, but it is easy to install by running bin/logstash-plugin install logstash-filter-environment
.
This filter stores environment variables as subfields in the @metadata
field.
You can then use these values in other parts of the pipeline.
Adding environment variables is as easy as: filter { environment { add_metadata_from_env { "field_name" ⇒ "ENV_VAR_NAME" } } }
Accessing stored environment variables is now done through the @metadata
field:
["@metadata"]["field_name"]
This would reference field field_name
, which in the above example references
the ENV_VAR_NAME
environment variable.
Previous versions of this plugin put the environment variables as
fields at the root level of the event. Current versions make use of the
@metadata
field, as outlined. You have to change add_field_from_env
in
the older versions to add_metadata_from_env
in the newer version.
Synopsis
editThis plugin supports the following configuration options:
Required configuration options:
environment { }
Available configuration options:
Setting | Input type | Required | Default value |
---|---|---|---|
No |
|
||
No |
|
||
No |
|
||
No |
|
||
No |
|
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No |
|
Details
edit
add_field
edit- Value type is hash
-
Default value is
{}
If this filter is successful, add any arbitrary fields to this event.
Field names can be dynamic and include parts of the event using the %{field}
.
Example:
filter { environment { add_field => { "foo_%{somefield}" => "Hello world, from %{host}" } } } [source,ruby] # You can also add multiple fields at once: filter { environment { add_field => { "foo_%{somefield}" => "Hello world, from %{host}" "new_field" => "new_static_value" } } }
If the event has field "somefield" == "hello"
this filter, on success,
would add field foo_hello
if it is present, with the
value above and the %{host}
piece replaced with that value from the
event. The second example would also add a hardcoded field.
add_metadata_from_env
edit- Value type is hash
-
Default value is
{}
Specify a hash of field names and the environment variable name with the value you want imported into Logstash. For example:
add_metadata_from_env { "field_name" => "ENV_VAR_NAME" }
or
add_metadata_from_env { "field1" => "ENV1" "field2" => "ENV2" # "field_n" => "ENV_n" }
add_tag
edit- Value type is array
-
Default value is
[]
If this filter is successful, add arbitrary tags to the event.
Tags can be dynamic and include parts of the event using the %{field}
syntax.
Example:
filter { environment { add_tag => [ "foo_%{somefield}" ] } } [source,ruby] # You can also add multiple tags at once: filter { environment { add_tag => [ "foo_%{somefield}", "taggedy_tag"] } }
If the event has field "somefield" == "hello"
this filter, on success,
would add a tag foo_hello
(and the second example would of course add a taggedy_tag
tag).
periodic_flush
edit- Value type is boolean
-
Default value is
false
Call the filter flush method at regular interval. Optional.
remove_field
edit- Value type is array
-
Default value is
[]
If this filter is successful, remove arbitrary fields from this event. Fields names can be dynamic and include parts of the event using the %{field} Example:
filter { environment { remove_field => [ "foo_%{somefield}" ] } } [source,ruby] # You can also remove multiple fields at once: filter { environment { remove_field => [ "foo_%{somefield}", "my_extraneous_field" ] } }
If the event has field "somefield" == "hello"
this filter, on success,
would remove the field with name foo_hello
if it is present. The second
example would remove an additional, non-dynamic field.
remove_tag
edit- Value type is array
-
Default value is
[]
If this filter is successful, remove arbitrary tags from the event.
Tags can be dynamic and include parts of the event using the %{field}
syntax.
Example:
filter { environment { remove_tag => [ "foo_%{somefield}" ] } } [source,ruby] # You can also remove multiple tags at once: filter { environment { remove_tag => [ "foo_%{somefield}", "sad_unwanted_tag"] } }
If the event has field "somefield" == "hello"
this filter, on success,
would remove the tag foo_hello
if it is present. The second example
would remove a sad, unwanted tag as well.