[DOCS] Align with ILM API docs (#48705)

* [DOCS] Reconciled with Snapshot/Restore reorg

docs/reference/ilm/apis/delete-lifecycle.asciidoc

@@ -6,7 +6,7 @@
 <titleabbrev>Delete policy</titleabbrev>
 ++++
 
-Deletes a lifecycle policy.
+Deletes an index lifecycle policy.
 
 [[ilm-delete-lifecycle-request]]
 ==== {api-request-title}

docs/reference/ilm/apis/ilm-api.asciidoc

@@ -1,8 +1,8 @@
 [[index-lifecycle-management-api]]
 == {ilm-cap} API
 
-You can use the following APIs to manage policies on indices. For more
-information, see <<index-lifecycle-management>>.
+You use the following APIs to set up policies to automatically manage the index lifecycle. 
+For more information about {ilm} ({ilm-init}), see <<index-lifecycle-management>>.
 
 [float]
 [[ilm-api-policy-endpoint]]

docs/reference/ilm/index.asciidoc

@@ -85,7 +85,3 @@ include::ilm-and-snapshots.asciidoc[]
 include::start-stop-ilm.asciidoc[]
 
 include::ilm-with-existing-indices.asciidoc[]
-
-include::getting-started-slm.asciidoc[]
-
-include::slm-retention.asciidoc[]

docs/reference/modules.asciidoc

@@ -50,10 +50,6 @@ The modules in this section are:
 
     Using plugins to extend Elasticsearch.
 
-<<modules-snapshots,Snapshot/Restore>>::
-
-    Backup your data with snapshot/restore.
-
 <<modules-threadpool,Thread pools>>::
 
     Information about the dedicated thread pools used in Elasticsearch.

docs/reference/redirects.asciidoc

@@ -320,3 +320,28 @@ See <<snapshots-register-repository>>.
 
 This page was deleted. 
 See <<put-dfanalytics>>.
+
+[role="exclude",id="slm-api-delete"]
+=== {slm-init} delete policy API
+
+See <<slm-api-delete-policy>>.
+
+[role="exclude",id="slm-api-execute"]
+=== {slm-init} execute lifecycle API
+
+See <<slm-api-execute-lifecycle>>.
+
+[role="exclude",id="slm-api-get"]
+=== {slm-init} get policy API
+
+See <<slm-api-get-policy>>.
+
+[role="exclude",id="slm-get-stats"]
+=== {slm-init} get stats API
+
+See <<slm-api-get-stats>>.
+
+[role="exclude",id="slm-api-put"]
+=== {slm-init} put policy API
+
+See <<slm-api-put-policy>>.

docs/reference/rest-api/index.asciidoc

@@ -53,7 +53,7 @@ include::{es-repo-dir}/indices/apis/reload-analyzers.asciidoc[]
 include::{es-repo-dir}/rollup/rollup-api.asciidoc[]
 include::{es-repo-dir}/search.asciidoc[]
 include::{xes-repo-dir}/rest-api/security.asciidoc[]
-include::{es-repo-dir}/ilm/apis/slm-api.asciidoc[]
+include::{es-repo-dir}/slm/apis/slm-api.asciidoc[]
 include::{es-repo-dir}/transform/apis/index.asciidoc[]
 include::{xes-repo-dir}/rest-api/watcher.asciidoc[]
 include::defs.asciidoc[]

docs/reference/slm/apis/index.asciidoc

@@ -0,0 +1,72 @@
+[role="xpack"]
+[testenv="basic"]
+[[snapshot-lifecycle-management]]
+== Manage the snapshot lifecycle
+
+You can set up snapshot lifecycle policies to automate the timing, frequency, and retention of snapshots. 
+Snapshot policies can apply to multiple indices. 
+
+The snapshot lifecycle management (SLM) <<snapshot-lifecycle-management-api, CRUD APIs>> provide
+the building blocks for the snapshot policy features that are part of the Management application in {kib}. 
+The  Snapshot and Restore UI makes it easy to set up policies, register snapshot repositories, 
+view and manage snapshots, and restore indices.
+
+You can stop and restart SLM to temporarily pause automatic backups while performing
+upgrades or other maintenance.
+To disable SLM entirely, set `xpack.slm.enabled` to `false` in `elasticsearch.yml`.
+
+[float]
+[[slm-and-security]]
+=== Security and SLM
+
+Two built-in cluster privileges control access to the SLM actions when 
+{es} {security-features} are enabled:
+
+`manage_slm`:: Allows a user to perform all SLM actions, including creating and updating policies 
+and starting and stopping SLM. 
+
+`read_slm`:: Allows a user to perform all read-only SLM actions, 
+such as getting policies and checking the SLM status.
+
+`cluster:admin/snapshot/*`:: Allows a user to take and delete snapshots of any
+index, whether or not they have access to that index. 
+
+For example, the following request configures an `slm-admin` role that grants the privileges
+necessary for administering SLM.
+
+[source,console]
+-----------------------------------
+POST /_security/role/slm-admin
+{
+  "cluster": ["manage_slm", "cluster:admin/snapshot/*"],
+  "indices": [
+    {
+      "names": [".slm-history-*"],
+      "privileges": ["all"]
+    }
+  ]
+}
+-----------------------------------
+// TEST[skip:security is not enabled here]
+
+Or, for a read-only role that can retrieve policies (but not update, execute, or
+delete them), as well as only view the history index:
+
+[source,console]
+-----------------------------------
+POST /_security/role/slm-read-only
+{
+  "cluster": ["read_slm"],
+  "indices": [
+    {
+      "names": [".slm-history-*"],
+      "privileges": ["read"]
+    }
+  ]
+}
+-----------------------------------
+// TEST[skip:security is not enabled here]
+
+include::getting-started-slm.asciidoc[]
+
+include::slm-retention.asciidoc[]

docs/reference/slm/apis/slm-api.asciidoc

@@ -0,0 +1,44 @@
+[role="xpack"]
+[testenv="basic"]
+[[snapshot-lifecycle-management-api]]
+== {slm-cap} API
+
+You use the following APIs to set up policies to automatically take snapshots and 
+control how long they are retained. 
+For more information about {slm} ({slm-init}), see <<snapshot-lifecycle-management>>.
+
+[float]
+[[slm-api-policy-endpoint]]
+=== Policy management APIs
+
+* <<slm-api-put-policy,Create lifecycle policy>>
+* <<slm-api-get-policy,Get lifecycle policy>>
+* <<slm-api-delete-policy,Delete lifecycle policy>>
+
+[float]
+[[slm-api-index-endpoint]]
+=== Snapshot management APIs
+
+* <<slm-api-execute-lifecycle,Execute snapshot lifecycle policy>> (take snapshots)
+* <<slm-api-execute-retention,Execute snapshot retention policy>> (delete expired snapshots)
+
+[float]
+[[slm-api-management-endpoint]]
+=== Operation management APIs
+
+* <<slm-api-get-status,Get {slm-init} status>>
+* <<slm-api-get-stats,Get global and policy-level action statistics>>
+* <<slm-api-start,Start {slm-init}>>
+* <<slm-api-stop,Stop {slm-init}>>
+
+include::slm-put.asciidoc[]
+include::slm-get.asciidoc[]
+include::slm-delete.asciidoc[]
+
+include::slm-execute.asciidoc[]
+include::slm-execute-retention.asciidoc[]
+
+include::slm-get-status.asciidoc[]
+include::slm-stats.asciidoc[]
+include::slm-start.asciidoc[]
+include::slm-stop.asciidoc[]

docs/reference/slm/apis/slm-delete.asciidoc

@@ -0,0 +1,67 @@
+[[slm-api-delete-policy]]
+=== Delete snapshot lifecycle policy API
+++++
+<titleabbrev>Delete policy</titleabbrev>
+++++
+
+Deletes an existing snapshot lifecycle policy.
+
+[[slm-api-delete-lifecycle-request]]
+==== {api-request-title}
+
+`DELETE /_slm/policy/<snapshot-lifecycle-policy-id>`
+
+[[slm-api-delete-lifecycle-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the `manage_slm`
+cluster privilege to use this API. For more information, see
+<<security-privileges>>.
+
+[[slm-api-delete-lifecycle-desc]]
+==== {api-description-title}
+
+Deletes the specified lifecycle policy definition. 
+This prevents any future snapshots from being taken
+but does not cancel in-progress snapshots
+or remove previously-taken snapshots.
+
+
+[[slm-api-delete-lifecycle-path-params]]
+==== {api-path-parms-title}
+
+`<policy-id>`::
+(Required, string)
+ID of the snapshot lifecycle policy to delete.
+
+[[slm-api-delete-lifecycle-example]]
+==== {api-examples-title}
+
+////
+[source,console]
+--------------------------------------------------
+PUT /_slm/policy/daily-snapshots
+{
+  "schedule": "0 30 1 * * ?", <1>
+  "name": "<daily-snap-{now/d}>", <2>
+  "repository": "my_repository", <3>
+  "config": { <4>
+    "indices": ["data-*", "important"], <5>
+    "ignore_unavailable": false,
+    "include_global_state": false
+  },
+  "retention": { <6>
+    "expire_after": "30d", <7>
+    "min_count": 5, <8>
+    "max_count": 50 <9>
+  }
+}
+--------------------------------------------------
+// TEST[setup:setup-repository]
+////
+
+[source,console]
+--------------------------------------------------
+DELETE /_slm/policy/daily-snapshots
+--------------------------------------------------
+// TEST[continued]

docs/reference/slm/apis/slm-execute-retention.asciidoc

@@ -0,0 +1,37 @@
+[[slm-api-execute-retention]]
+=== Execute snapshot retention policy API
+++++
+<titleabbrev>Execute snapshot retention policy</titleabbrev>
+++++
+
+Deletes any snapshots that are expired according to the policy's retention rules.
+
+[[slm-api-execute-retention-request]]
+==== {api-request-title}
+
+`POST /_slm/_execute_retention`
+
+[[slm-api-execute-retention-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the `manage_slm`
+cluster privilege to use this API. For more information, see
+<<security-privileges>>.
+
+[[slm-api-execute-retention-desc]]
+==== {api-description-title}
+
+Manually applies the retention policy to force immediate removal of expired snapshots. 
+The retention policy is normally applied according to its schedule.
+
+[[slm-api-execute-retention-example]]
+==== {api-examples-title}
+
+To force removal of expired snapshots:
+
+[source,console]
+--------------------------------------------------
+POST /_slm/_execute_retention
+--------------------------------------------------
+
+Retention runs asynchronously in the background.

docs/reference/slm/apis/slm-execute.asciidoc

@@ -0,0 +1,61 @@
+[[slm-api-execute-lifecycle]]
+=== Execute snapshot lifecycle policy API
+++++
+<titleabbrev>Execute snapshot lifecycle policy</titleabbrev>
+++++
+
+Immediately creates a snapshot according to the lifecycle policy, 
+without waiting for the scheduled time.
+
+[[slm-api-execute-lifecycle-request]]
+==== {api-request-title}
+
+`PUT /_slm/policy/<snapshot-lifecycle-policy-id>/_execute`
+
+[[slm-api-execute-lifecycle-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the `manage_slm`
+cluster privilege to use this API. For more information, see
+<<security-privileges>>.
+
+[[slm-api-execute-lifecycle-desc]]
+==== {api-description-title}
+
+Manually applies the snapshot policy to immediately create a snapshot. 
+The snapshot policy is normally applied according to its schedule,
+but you might want to manually execute a policy before performing an upgrade
+or other maintenance. 
+
+[[slm-api-execute-lifecycle-path-params]]
+==== {api-path-parms-title}
+
+`<policy-id>`::
+(Required, string)
+ID of the snapshot lifecycle policy to execute.
+
+[[slm-api-execute-lifecycle-example]]
+==== {api-examples-title}
+
+To take an immediate snapshot according to the `daily-snapshots` policy:
+
+[source,console]
+--------------------------------------------------
+POST /_slm/policy/daily-snapshots/_execute
+--------------------------------------------------
+// TEST[skip:we can't easily handle snapshots from docs tests]
+
+If successful, this request returns the generated snapshot name:
+
+[source,console-result]
+--------------------------------------------------
+{
+  "snapshot_name": "daily-snap-2019.04.24-gwrqoo2xtea3q57vvg0uea"
+}
+--------------------------------------------------
+// TESTRESPONSE[skip:we can't handle snapshots from docs tests]
+
+The snapshot is taken in the background. 
+You can use the<<modules-snapshots,snapshot APIs>> to monitor the status of the snapshot.
+
+To see the status of a policy's most recent snapshot, you can use the <<slm-api-get-policy>>.

docs/reference/slm/apis/slm-get-status.asciidoc

@@ -0,0 +1,53 @@
+[[slm-api-get-status]]
+=== Get {slm} status API
+
+[subs="attributes"]
+++++
+<titleabbrev>Get {slm} status</titleabbrev>
+++++
+
+Retrieves the status of {slm} ({slm-init}).
+
+[[slm-api-get-status-request]]
+==== {api-request-title}
+
+`GET /_slm/status`
+
+[[slm-api-get-status-desc]]
+==== {api-description-title}
+
+Returns the status of the {slm-init} plugin. 
+The `operation_mode` field in the response shows one of three states: 
+`STARTED`, `STOPPING`, or `STOPPED`. 
+You halt and restart the {slm-init} plugin with the
+<<slm-api-stop, stop>> and <<slm-api-start, start>>  APIs.
+
+==== {api-query-parms-title}
+
+include::{docdir}/rest-api/common-parms.asciidoc[tag=timeoutparms]
+
+[[slm-api-get-status-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the 
+`manage_slm` or `read_slm` cluster privileges to use this API. 
+For more information, see <<security-privileges>>.
+
+[[slm-api-get-status-example]]
+==== {api-examples-title}
+
+
+[source,console]
+--------------------------------------------------
+GET _slm/status
+--------------------------------------------------
+
+The API returns the following result:
+
+[source,console-result]
+--------------------------------------------------
+{
+  "operation_mode": "RUNNING"
+}
+--------------------------------------------------
+// TESTRESPONSE[s/"operation_mode": "RUNNING"/"operation_mode": $body.operation_mode/]

docs/reference/slm/apis/slm-get.asciidoc

@@ -0,0 +1,124 @@
+[[slm-api-get-policy]]
+=== Get snapshot lifecycle policy API
+++++
+<titleabbrev>Get policy</titleabbrev>
+++++
+
+Retrieves one or more snapshot lifecycle policy definitions and
+information about the latest snapshot attempts.
+
+[[slm-api-get-request]]
+==== {api-request-title}
+
+`GET /_slm/policy/<policy-id>`
+
+`GET /_slm/policy`
+
+[[slm-api-get-lifecycle-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the `manage_slm`
+cluster privilege to use this API. For more information, see
+<<security-privileges>>.
+
+[[slm-api-get-desc]]
+==== {api-description-title}
+
+Returns the specified policy definition and 
+information about the latest successful and failed attempts to create snapshots. 
+If no policy is specified, returns all defined policies.
+
+[[slm-api-get-path-params]]
+==== {api-path-parms-title}
+
+`<policy-id>`::
+(Optional, string)
+Comma-separated list of snapshot lifecycle policy IDs.
+
+[[slm-api-get-example]]
+==== {api-examples-title}
+
+[[slm-api-get-specific-ex]]
+===== Get a specific policy
+
+////
+[source,console]
+--------------------------------------------------
+PUT /_slm/policy/daily-snapshots
+{
+  "schedule": "0 30 1 * * ?", <1>
+  "name": "<daily-snap-{now/d}>", <2>
+  "repository": "my_repository", <3>
+  "config": { <4>
+    "indices": ["data-*", "important"], <5>
+    "ignore_unavailable": false,
+    "include_global_state": false
+  },
+  "retention": { <6>
+    "expire_after": "30d", <7>
+    "min_count": 5, <8>
+    "max_count": 50 <9>
+  }
+}
+--------------------------------------------------
+// TEST[setup:setup-repository]
+////
+
+Get the `daily-snapshots` policy:
+
+[source,console]
+--------------------------------------------------
+GET /_slm/policy/daily-snapshots?human
+--------------------------------------------------
+// TEST[continued]
+
+This request returns the following response:
+
+[source,console-result]
+--------------------------------------------------
+{
+  "daily-snapshots" : {
+    "version": 1, <1>
+    "modified_date": "2019-04-23T01:30:00.000Z", <2>
+    "modified_date_millis": 1556048137314,
+    "policy" : {
+      "schedule": "0 30 1 * * ?",
+      "name": "<daily-snap-{now/d}>",
+      "repository": "my_repository",
+      "config": {
+        "indices": ["data-*", "important"],
+        "ignore_unavailable": false,
+        "include_global_state": false
+      },
+      "retention": {
+        "expire_after": "30d",
+        "min_count": 5,
+        "max_count": 50
+      }
+    },
+    "stats": {
+      "policy": "daily-snapshots",
+      "snapshots_taken": 0,
+      "snapshots_failed": 0,
+      "snapshots_deleted": 0,
+      "snapshot_deletion_failures": 0
+    },
+    "next_execution": "2019-04-24T01:30:00.000Z", <3>
+    "next_execution_millis": 1556048160000
+  }
+}
+--------------------------------------------------
+// TESTRESPONSE[s/"modified_date": "2019-04-23T01:30:00.000Z"/"modified_date": $body.daily-snapshots.modified_date/ s/"modified_date_millis": 1556048137314/"modified_date_millis": $body.daily-snapshots.modified_date_millis/ s/"next_execution": "2019-04-24T01:30:00.000Z"/"next_execution": $body.daily-snapshots.next_execution/ s/"next_execution_millis": 1556048160000/"next_execution_millis": $body.daily-snapshots.next_execution_millis/]
+<1> The version of the snapshot policy, only the latest verison is stored and incremented when the policy is updated
+<2> The last time this policy was modified.
+<3> The next time this policy will be executed.
+
+
+[[slm-api-get-all-ex]]
+===== Get all policies
+
+[source,console]
+--------------------------------------------------
+GET /_slm/policy
+--------------------------------------------------
+// TEST[continued]

docs/reference/slm/apis/slm-put.asciidoc

@@ -0,0 +1,177 @@
+[[slm-api-put-policy]]
+=== Put snapshot lifecycle policy API
+++++
+<titleabbrev>Put policy</titleabbrev>
+++++
+
+Creates or updates a snapshot lifecycle policy.
+
+
+[[slm-api-put-request]]
+==== {api-request-title}
+
+`PUT /_slm/policy/<snapshot-lifecycle-policy-id>`
+
+[[slm-api-put-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the 
+`manage_slm` cluster privilege and the `manage` index privilege
+for any included indices to use this API. 
+For more information, see <<security-privileges>>.
+
+[[slm-api-put-desc]]
+==== {api-description-title}
+
+Use the put snapshot lifecycle policy API
+to create or update a snapshot lifecycle policy.
+
+If the policy already exists,
+this request increments the policy's version.
+Only the latest version of a policy is stored.
+
+[[slm-api-put-path-params]]
+==== {api-path-parms-title}
+
+`<snapshot-lifecycle-policy-id>`::
+(Required, string)
+ID for the snapshot lifecycle policy
+you want to create or update.
+
+[[slm-api-put-query-params]]
+==== {api-query-parms-title}
+
+include::{docdir}/rest-api/common-parms.asciidoc[tag=timeoutparms]
+
+[[slm-api-put-request-body]]
+==== {api-request-body-title}
+
+`schedule`::
+(Required, <<schedule-cron,Cron scheduler configuration>>)
+Periodic or absolute schedule
+at which the policy creates snapshots
+and deletes expired snapshots.
++
+Schedule changes to existing policies
+are applied immediately.
+
+`name`::
++
+--
+(Required, string)
+Name automatically assigned to each snapshot
+created by the policy.
+
+This value supports the same <<date-math-index-names,date math>>
+supported in index names.
+
+To prevent conflicting snapshot names,
+a UUID is automatically appended to each snapshot name.
+--
+
+`repository`::
++
+--
+(Required, string)
+Repository used to store snapshots
+created by this policy.
+
+This repository must exist prior to the policy's creation.
+You can create a repository
+using the <<modules-snapshots,snapshot repository API>>.
+--
+
+`config`::
++
+--
+(Required, object)
+Configuration for each snapshot
+created by the policy.
+
+Parameters include:
+
+`indices`::
+(Optional, array of strings)
+Array of index names or wildcard pattern of index names
+included in snapshots.
+
+`ignore_unavailable`::
+(Optional, boolean)
+If `true`,
+missing indices do *not* cause snapshot creation to fail
+and return an error.
+Defaults to `false`.
+
+`include_global_state`::
+(Optional, boolean)
+If `true`,
+cluster states are included in snapshots.
+Defaults to `false`.
+--
+
+`retention`::
++
+--
+(Optional, object)
+Retention rules used to retain
+and delete snapshots
+created by the policy.
+
+Parameters include:
+
+`expire_after`::
+(Optional, <<time-units, time units>>)
+Time period after which
+a snapshot is considered expired
+and eligible for deletion.
+
+`max_count`::
+(Optional, integer)
+Maximum number of snapshots to retain,
+even if the snapshots have not yet expired.
++
+If the number of snapshots in the repository exceeds this limit,
+the policy retains the most recent snapshots
+and deletes older snapshots.
+
+`min_count`::
+(Optional, integer)
+Minimum number of snapshots to retain,
+even if the snapshots have expired.
+--
+
+[[slm-api-put-example]]
+==== {api-examples-title}
+
+Create a `daily-snapshots` lifecycle policy:
+
+[source,console]
+--------------------------------------------------
+PUT /_slm/policy/daily-snapshots
+{
+  "schedule": "0 30 1 * * ?", <1>
+  "name": "<daily-snap-{now/d}>", <2>
+  "repository": "my_repository", <3>
+  "config": { <4>
+    "indices": ["data-*", "important"], <5>
+    "ignore_unavailable": false,
+    "include_global_state": false
+  },
+  "retention": { <6>
+    "expire_after": "30d", <7>
+    "min_count": 5, <8>
+    "max_count": 50 <9>
+  }
+}
+--------------------------------------------------
+// TEST[setup:setup-repository]
+
+<1> When the snapshot should be taken, in this case, 1:30am daily
+<2> The name each snapshot should be given
+<3> Which repository to take the snapshot in
+<4> Any extra snapshot configuration
+<5> Which indices the snapshot should contain
+<6> Optional retention configuration
+<7> Keep snapshots for 30 days
+<8> Always keep at least 5 successful snapshots, even if they're more than 30 days old
+<9> Keep no more than 50 successful snapshots, even if they're less than 30 days old

docs/reference/slm/apis/slm-start.asciidoc

@@ -0,0 +1,51 @@
+[[slm-api-start]]
+=== Start {slm} API
+
+[subs="attributes"]
+++++
+<titleabbrev>Start {slm}</titleabbrev>
+++++
+
+Turns on {slm} ({slm-init}).
+
+[[slm-api-start-request]]
+==== {api-request-title}
+
+`POST /_slm/start`
+
+[[slm-api-start-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the `manage_slm`
+cluster privilege to use this API. For more information, see
+<<security-privileges>>.
+
+[[slm-api-start-desc]]
+==== {api-description-title}
+
+Starts the {slm-init} plugin if it's not running. 
+{slm-init} starts automatically when a cluster is formed. 
+Manually starting {slm-init} is only necessary if it has been stopped using the <<slm-api-stop>>.
+
+==== {api-query-parms-title}
+
+include::{docdir}/rest-api/common-parms.asciidoc[tag=timeoutparms]
+
+[[slm-api-start-example]]
+==== {api-examples-title}
+
+Start the {slm-init} plugin:
+
+[source,console]
+--------------------------------------------------
+POST _slm/start
+--------------------------------------------------
+
+If successful, this request returns:
+
+[source,console-result]
+--------------------------------------------------
+{
+  "acknowledged": true
+}
+--------------------------------------------------

docs/reference/slm/apis/slm-stats.asciidoc

@@ -0,0 +1,46 @@
+[[slm-api-get-stats]]
+=== Get snapshot lifecycle stats API
+++++
+<titleabbrev>Get snapshot lifecycle stats</titleabbrev>
+++++
+
+Returns global and policy-level statistics about actions taken by {slm}.
+
+[[slm-api-stats-request]]
+==== {api-request-title}
+
+`GET /_slm/stats`
+
+[[slm-api-stats-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the `manage_slm`
+cluster privilege to use this API. For more information, see
+<<security-privileges>>.
+
+[[slm-api-stats-example]]
+==== {api-examples-title}
+
+[source,console]
+--------------------------------------------------
+GET /_slm/stats
+--------------------------------------------------
+
+The API returns the following response:
+
+[source,js]
+--------------------------------------------------
+{
+  "retention_runs": 13,
+  "retention_failed": 0,
+  "retention_timed_out": 0,
+  "retention_deletion_time": "1.4s",
+  "retention_deletion_time_millis": 1404,
+  "policy_stats": [ ],
+  "total_snapshots_taken": 1,
+  "total_snapshots_failed": 1,
+  "total_snapshots_deleted": 0,
+  "total_snapshot_deletion_failures": 0
+}
+--------------------------------------------------
+// TESTRESPONSE[s/runs": 13/runs": $body.retention_runs/ s/_failed": 0/_failed": $body.retention_failed/ s/_timed_out": 0/_timed_out": $body.retention_timed_out/ s/"1.4s"/$body.retention_deletion_time/ s/1404/$body.retention_deletion_time_millis/ s/total_snapshots_taken": 1/total_snapshots_taken": $body.total_snapshots_taken/ s/total_snapshots_failed": 1/total_snapshots_failed": $body.total_snapshots_failed/ s/"policy_stats": [.*]/"policy_stats": $body.policy_stats/]

docs/reference/slm/apis/slm-stop.asciidoc

@@ -0,0 +1,48 @@
+[[slm-api-stop]]
+=== Stop {slm} API
+
+[subs="attributes"]
+++++
+<titleabbrev>Stop {slm}</titleabbrev>
+++++
+
+Turn off {slm} ({slm-init}).
+
+[[slm-api-stop-request]]
+==== {api-request-title}
+
+`POST /_slm/stop`
+
+[[slm-api-stop-prereqs]]
+==== {api-prereq-title}
+
+If the {es} {security-features} are enabled, you must have the `manage_slm`
+cluster privilege to use this API. For more information, see
+<<security-privileges>>.
+
+[[slm-api-stop-desc]]
+==== {api-description-title}
+
+Halts all {slm} ({slm-init}) operations and stops the {slm-init} plugin.
+This is useful when you are performing maintenance on a cluster and need to
+prevent {slm-init} from performing any actions on your indices. 
+Stopping {slm-init} does not stop any snapshots that are in progress.
+You can manually trigger snapshots with the <<slm-api-execute-lifecycle>> even if {slm-init} is stopped.
+
+The API returns a response as soon as the request is acknowledged, but 
+the plugin might continue to run until in-progress operations complete and it can be safely stopped. 
+This conversation was marked as resolved by debadair
+Use the  <<slm-api-get-status>> to see if {slm-init} is running. 
+
+==== {api-query-parms-title}
+
+include::{docdir}/rest-api/common-parms.asciidoc[tag=timeoutparms]
+
+[[slm-api-stop-example]]
+==== {api-examples-title}
+
+
+[source,console]
+--------------------------------------------------
+POST _slm/stop
+--------------------------------------------------

docs/reference/ilm/getting-started-slm.asciidoc → docs/reference/slm/getting-started-slm.asciidoc

@@ -1,62 +1,17 @@
 [role="xpack"]
 [testenv="basic"]
 [[getting-started-snapshot-lifecycle-management]]
-== Getting started with snapshot lifecycle management
+=== Configure snapshot lifecycle policies
 
-Let's get started with snapshot lifecycle management (SLM) by working through a
+Let's get started with {slm} ({slm-init}) by working through a
 hands-on scenario. The goal of this example is to automatically back up {es}
 indices using the <<snapshot-restore,snapshots>> every day at a particular
 time. Once these snapshots have been created, they are kept for a configured
 amount of time and then deleted per a configured retention policy.
 
 [float]
-[[slm-and-security]]
-=== Security and SLM
-Before starting, it's important to understand the privileges that are needed
-when configuring SLM if you are using the security plugin. There are two
-built-in cluster privileges that can be used to assist: `manage_slm` and
-`read_slm`. It's also good to note that the `cluster:admin/snapshot/*`
-permission allows taking and deleting snapshots even for indices the role may
-not have access to.
-
-An example of configuring an administrator role for SLM follows:
-
-[source,console]
------------------------------------
-POST /_security/role/slm-admin
-{
-  "cluster": ["manage_slm", "cluster:admin/snapshot/*"],
-  "indices": [
-    {
-      "names": [".slm-history-*"],
-      "privileges": ["all"]
-    }
-  ]
-}
------------------------------------
-// TEST[skip:security is not enabled here]
-
-Or, for a read-only role that can retrieve policies (but not update, execute, or
-delete them), as well as only view the history index:
-
-[source,console]
------------------------------------
-POST /_security/role/slm-read-only
-{
-  "cluster": ["read_slm"],
-  "indices": [
-    {
-      "names": [".slm-history-*"],
-      "privileges": ["read"]
-    }
-  ]
-}
------------------------------------
-// TEST[skip:security is not enabled here]
-
-[float]
-[[slm-gs-create-policy]]
-=== Setting up a repository
+[[slm-gs-register-repository]]
+==== Register a repository
 
 Before we can set up an SLM policy, we'll need to set up a
 snapshot repository where the snapshots will be
@@ -76,12 +31,13 @@ PUT /_snapshot/my_repository
 -----------------------------------
 
 [float]
-=== Setting up a policy
+[[slm-gs-create-policy]]
+==== Setting up a snapshot policy
 
 Now that we have a repository in place, we can create a policy to automatically
 take snapshots. Policies are written in JSON and will define when to take
 snapshots, what the snapshots should be named, and which indices should be
-included, among other things.  We'll use the <<slm-api-put,Put Policy>> API
+included, among other things.  We'll use the <<slm-api-put-policy>> API
 to create the policy.
 
 When configurating a policy, retention can also optionally be configured. See
@@ -131,13 +87,14 @@ request>>, so you can specify, for example, whether the snapshot should fail in
 special cases, such as if one of the specified indices cannot be found.
 
 [float]
-=== Making sure the policy works
+[[slm-gs-test-policy]]
+==== Test the snapshot policy
 
 While snapshots taken by SLM policies can be viewed through the standard snapshot
 API, SLM also keeps track of policy successes and failures in ways that are a bit
 easier to use to make sure the policy is working.  Once a policy has executed at
-least once, when you view the policy using the <<slm-api-get,Get Policy API>>, 
-some metadata will be returned indicating whether the snapshot was successfully 
+least once, when you view the policy using the <<slm-api-get-policy>>, 
+some metadata will be returned indicating whether the snapshot was sucessfully 
 initiated or not.
 
 Instead of waiting for our policy to run, let's tell SLM to take a snapshot
@@ -219,7 +176,7 @@ field - it's included above only as an example. You should, however, see a
 `last_success` field and a snapshot name. If you do, you've successfully taken
 your first snapshot using SLM!
 
-While only the most recent success and failure are available through the Get Policy 
+While only the most recent sucess and failure are available through the Get Policy 
 API, all policy executions are recorded to a history index, which may be queried
 by searching the index pattern `.slm-history*`.
 

docs/reference/slm/index.asciidoc

@@ -0,0 +1,72 @@
+[role="xpack"]
+[testenv="basic"]
+[[snapshot-lifecycle-management]]
+== Manage the snapshot lifecycle
+
+You can set up snapshot lifecycle policies to automate the timing, frequency, and retention of snapshots. 
+Snapshot policies can apply to multiple indices. 
+
+The snapshot lifecycle management (SLM) <<snapshot-lifecycle-management-api, CRUD APIs>> provide
+the building blocks for the snapshot policy features that are part of the Management application in {kib}. 
+The  Snapshot and Restore UI makes it easy to set up policies, register snapshot repositories, 
+view and manage snapshots, and restore indices.
+
+You can stop and restart SLM to temporarily pause automatic backups while performing
+upgrades or other maintenance.
+To disable SLM entirely, set `xpack.slm.enabled` to `false` in `elasticsearch.yml`.
+
+[float]
+[[slm-and-security]]
+=== Security and SLM
+
+Two built-in cluster privileges control access to the SLM actions when 
+{es} {security-features} are enabled:
+
+`manage_slm`:: Allows a user to perform all SLM actions, including creating and updating policies 
+and starting and stopping SLM. 
+
+`read_slm`:: Allows a user to perform all read-only SLM actions, 
+such as getting policies and checking the SLM status.
+
+`cluster:admin/snapshot/*`:: Allows a user to take and delete snapshots of any
+index, whether or not they have access to that index. 
+
+For example, the following request configures an `slm-admin` role that grants the privileges
+necessary for administering SLM.
+
+[source,console]
+-----------------------------------
+POST /_security/role/slm-admin
+{
+  "cluster": ["manage_slm", "cluster:admin/snapshot/*"],
+  "indices": [
+    {
+      "names": [".slm-history-*"],
+      "privileges": ["all"]
+    }
+  ]
+}
+-----------------------------------
+// TEST[skip:security is not enabled here]
+
+Or, for a read-only role that can retrieve policies (but not update, execute, or
+delete them), as well as only view the history index:
+
+[source,console]
+-----------------------------------
+POST /_security/role/slm-read-only
+{
+  "cluster": ["read_slm"],
+  "indices": [
+    {
+      "names": [".slm-history-*"],
+      "privileges": ["read"]
+    }
+  ]
+}
+-----------------------------------
+// TEST[skip:security is not enabled here]
+
+include::getting-started-slm.asciidoc[]
+
+include::slm-retention.asciidoc[]

docs/reference/ilm/slm-retention.asciidoc → docs/reference/slm/slm-retention.asciidoc

@@ -1,7 +1,7 @@
 [role="xpack"]
 [testenv="basic"]
 [[slm-retention]]
-== Snapshot lifecycle management retention
+=== Snapshot retention
 
 Automatic deletion of older snapshots is an optional feature of snapshot lifecycle management.
 Retention is run as a cluster level task that is not associated with a particular policy's schedule
@@ -11,7 +11,7 @@ run and for how long, the second configured on a policy for which snapshots shou
 retention.
 
 The cluster level settings for retention are shown below, and can be changed dynamically using the
-<<cluster-update-settings,cluster-update-settings>> API:
+<<cluster-update-settings>> API:
 
 |=====================================
 | Setting | Default value | Description
@@ -19,7 +19,7 @@ The cluster level settings for retention are shown below, and can be changed dyn
 | `slm.retention_schedule` | `0 30 1 * * ?` | A periodic or absolute time schedule for when
   retention should be run. Supports all values supported by the cron scheduler: <<schedule-cron,Cron
   scheduler configuration>>. Retention can also be manually run using the
-  <<slm-api-execute-retention,Execute retention API>>. Defaults to daily at 1:30am in the master
+  <<slm-api-execute-retention>> API. Defaults to daily at 1:30am in the master
   node's timezone.
 
 | `slm.retention_duration` | `"1h"` | A limit of how long SLM should spend deleting old snapshots.
@@ -70,12 +70,12 @@ successful snapshots.
 ____
 
 If multiple policies are configured to snapshot to the same repository, or manual snapshots have
-been taken without using the <<slm-api-execute,Execute Policy API>>, they are treated as not
+been taken without using the <<slm-api-execute-lifecycle>> API, they are treated as not
 eligible for retention, and do not count towards any limits. This allows multiple policies to have
 differing retention configuration while using the same snapshot repository.
 
-Statistics for snapshot retention can be retrieved using the <<slm-get-stats,Get Snapshot Lifecycle
-Stats API>>:
+Statistics for snapshot retention can be retrieved using the 
+<<slm-api-get-stats>> API:
 
 [source,console]
 --------------------------------------------------

docs/reference/snapshot-restore/index.asciidoc

@@ -87,4 +87,6 @@ include::register-repository.asciidoc[]
 include::take-snapshot.asciidoc[]
 include::restore-snapshot.asciidoc[]
 include::monitor-snapshot-restore.asciidoc[]
+include::../slm/index.asciidoc[]
+
 

x-pack/plugin/src/test/resources/rest-api-spec/api/slm.delete_lifecycle.json

@@ -1,7 +1,7 @@
 {
   "slm.delete_lifecycle":{
     "documentation":{
-      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-delete.html"
+      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-delete-policy.html"
     },
     "stability":"stable",
     "url":{

x-pack/plugin/src/test/resources/rest-api-spec/api/slm.execute_lifecycle.json

@@ -1,7 +1,7 @@
 {
   "slm.execute_lifecycle":{
     "documentation":{
-      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-execute.html"
+      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-execute-policy.html"
     },
     "stability":"stable",
     "url":{

x-pack/plugin/src/test/resources/rest-api-spec/api/slm.get_lifecycle.json

@@ -1,7 +1,7 @@
 {
   "slm.get_lifecycle":{
     "documentation":{
-      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-get.html"
+      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-get-policy.html"
     },
     "stability":"stable",
     "url":{

x-pack/plugin/src/test/resources/rest-api-spec/api/slm.get_stats.json

@@ -1,7 +1,7 @@
 {
   "slm.get_stats":{
     "documentation":{
-      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html"
+      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-api-get-stats.html"
     },
     "stability":"stable",
     "url":{

x-pack/plugin/src/test/resources/rest-api-spec/api/slm.put_lifecycle.json

@@ -1,7 +1,7 @@
 {
   "slm.put_lifecycle":{
     "documentation":{
-      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-put.html"
+      "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-put-policy.html"
     },
     "stability":"stable",
     "url":{