Add new steps and missing delete search pipeline doc

Signed-off-by: Daniel Widdis <widdis@gmail.com>

_automating-configurations/workflow-steps.md

@@ -40,8 +40,11 @@ The following table lists the workflow step types. The `user_inputs` fields for
 |`delete_agent`	|[Delete Agent API]({{site.url}}{{site.baseurl}}/ml-commons-plugin/)	|Deletes an agent.	|
 |`create_tool`	|No API	| A special-case non-API step encapsulating the specification of a tool for an agent in the ML Commons Agent Framework. These will be listed as `previous_node_inputs` for the appropriate register agent step, with the value set to `tools`.	|
 |`create_index`|[Create Index]({{site.url}}{{site.baseurl}}/api-reference/index-apis/create-index/)     | Creates a new OpenSearch index. The inputs include `index_name`, which should be the name of the index to be created, and `configurations`, which contains the payload body of a regular REST request for creating an index.
+|`delete_index`|[Delete Index]({{site.url}}{{site.baseurl}}/api-reference/index-apis/delete-index/)     | Deletes an OpenSearch index. The inputs include `index_name`, which should be the name of the index to be deleted.
 |`create_ingest_pipeline`|[Create Ingest Pipeline]({{site.url}}{{site.baseurl}}/ingest-pipelines/create-ingest/) | Creates or updates an ingest pipeline. The inputs include `pipeline_id`, which should be the ID of the pipeline, and `configurations`, which contains the payload body of a regular REST request for creating an ingest pipeline.
+|`delete_ingest_pipeline`|[Delete Ingest Pipeline]({{site.url}}{{site.baseurl}}/ingest-pipelines/delete-ingest/) | Deletes an ingest pipeline. The inputs include `pipeline_id`, which should be the ID of the pipeline to delete.
 |`create_search_pipeline`|[Create Search Pipeline]({{site.url}}{{site.baseurl}}/search-plugins/search-pipelines/creating-search-pipeline/) | Creates or updates a search pipeline. The inputs include `pipeline_id`, which should be the ID of the pipeline, and `configurations`, which contains the payload body of a regular REST request for creating a search pipeline.
+|`delete_search_pipeline`|[Delete Search Pipeline]({{site.url}}{{site.baseurl}}/search-plugins/search-pipelines/deleting-search-pipeline/) | Deletes a search pipeline. The inputs include `pipeline_id`, which should be the ID of the pipeline to delete.
 |`reindex`|[Reindex]({{site.url}}{{site.baseurl}}/api-reference/document-apis/reindex/)  | The reindex document API operation lets you copy all or a subset of your data from a source index into a destination index. The input includes source_index, destination_index, and the following optional parameters from the document reindex API: `refresh`, `requests_per_second`, `require_alias`, `slices`, and `max_docs`. For more information, see [Reindexing considerations](#reindexing-considerations).
 
 ## Reindexing considerations

_search-plugins/search-pipelines/deleting-search-pipeline.md

@@ -0,0 +1,26 @@
+---
+layout: default
+title: Deleting search pipelines
+nav_order: 30
+has_children: false
+parent: Search pipelines
+grand_parent: Search
+---
+
+# Deleting search pipelines
+
+Use the following request to delete a pipeline.
+
+To delete a specific search pipeline, pass the pipeline ID as a parameter:
+
+```json
+DELETE /_search/pipeline/<pipeline-id>
+```
+{% include copy-curl.html %}
+
+To delete all search pipelines in a cluster, use the wildcard character (`*`):
+
+```json
+DELETE /_search/pipeline/*
+```
+{% include copy-curl.html %}