[Upgrade Assistant] Batch reindex docs

docs/api/upgrade-assistant/batch_reindexing.asciidoc

@@ -6,7 +6,7 @@
 
 experimental["The underlying Upgrade Assistant concepts are stable, but the APIs for managing Upgrade Assistant are experimental."]
 
-Start or resume multiple reindexing tasks in one request. Additionally, reindexing tasks started or resumed
+Start or resume multiple <<start-resume-reindex, reindexing>> tasks in one request. Additionally, reindexing tasks started or resumed
 via the batch endpoint will be placed on a queue and executed one-by-one, which ensures that minimal cluster resources
 are consumed over time.
 
@@ -76,7 +76,7 @@ Similar to the <<start-resume-reindex, start or resume endpoint>>, the API retur
 }
 --------------------------------------------------
 
-<1> A list of reindex operations created, the order in the array indicates the order in which tasks will be executed.
+<1> A list of reindex tasks created, the order in the array indicates the order in which tasks will be executed.
 <2> Presence of this key indicates that the reindex job will occur in the batch.
 <3> A Unix timestamp of when the reindex task was placed in the queue.
 <4> A list of errors that may have occurred preventing the reindex task from being created.

docs/api/upgrade-assistant/cancel_reindex.asciidoc

@@ -4,7 +4,7 @@
 <titleabbrev>Cancel reindex</titleabbrev>
 ++++
 
-experimental[] Cancel reindexes that are waiting for the {es} reindex task to complete. For example, `lastCompletedStep` set to `40`.
+experimental["The underlying Upgrade Assistant concepts are stable, but the APIs for managing Upgrade Assistant are experimental."]
 
 Cancel reindexes that are waiting for the Elasticsearch reindex task to complete. For example, `lastCompletedStep` set to `40`.
 

docs/api/upgrade-assistant/check_reindex_status.asciidoc

@@ -4,7 +4,9 @@
 <titleabbrev>Check reindex status</titleabbrev>
 ++++
 
-experimental[] Check the status of the reindex operation.
+experimental["The underlying Upgrade Assistant concepts are stable, but the APIs for managing Upgrade Assistant are experimental."]
+
+Check the status of the reindex task.
 
 [[check-reindex-status-request]]
 ==== Request
@@ -43,7 +45,7 @@ The API returns the following:
 <2> Current status of the reindex. For details, see <<status-code,Status codes>>.
 <3> Last successfully completed step of the reindex. For details, see <<step-code,Step codes>> table.
 <4> Task ID of the reindex task in Elasticsearch. Only present if reindexing has started.
-<5> Percentage of how far the reindexing task in Elasticsearch has progressed, in decimal from from 0 to 1.
+<5> Percentage of how far the reindexing task in Elasticsearch has progressed, in decimal form from 0 to 1.
 <6> Error that caused the reindex to fail, if it failed.
 <7> An array of any warning codes explaining what changes are required for this reindex. For details, see <<warning-code,Warning codes>>.
 <8> Specifies if the user has sufficient privileges to reindex this index. When security is unavailable or disables, returns `true`.
@@ -73,7 +75,7 @@ To resume the reindex, you must submit a new POST request to the `/api/upgrade_a
 ==== Step codes
 
 `0`::
-  The reindex operation has been created in Kibana.
+  The reindex task has been created in Kibana.
 
 `10`::
   The index group services stopped. Only applies to some system indices.

docs/api/upgrade-assistant/reindexing.asciidoc

@@ -4,9 +4,18 @@
 <titleabbrev>Start or resume reindex</titleabbrev>
 ++++
 
-experimental[] Start a new reindex or resume a paused reindex.
+experimental["The underlying Upgrade Assistant concepts are stable, but the APIs for managing Upgrade Assistant are experimental."]
+
+Start a new reindex or resume a paused reindex. Following steps are performed during 
+a reindex task:
+
+. Setting the index to read-only
+. Creating a new index
+. {ref}/docs-reindex.html[Reindexing] documents into the new index
+. Creating an index alias for the new index
+. Deleting the old index
+
 
-Start a new reindex or resume a paused reindex.
 
 [[start-resume-reindex-request]]
 ==== Request
@@ -40,6 +49,6 @@ The API returns the following:
 <1> The name of the new index.
 <2> The reindex status. For more information, refer to <<status-code,Status codes>>.
 <3> The last successfully completed step of the reindex. For more information, refer to <<step-code,Step codes>>.
-<4> The task ID of the reindex task in {es}. Appears when the reindexing starts.
-<5> The progress of the reindexing task in {es}. Appears in decimal form, from 0 to 1.
+<4> The task ID of the {ref}/docs-reindex.html[reindex] task in {es}. Appears when the reindexing starts.
+<5> The progress of the {ref}/docs-reindex.html[reindexing] task in {es}. Appears in decimal form, from 0 to 1.
 <6> The error that caused the reindex to fail, if it failed.

docs/api/upgrade-assistant/status.asciidoc

@@ -4,7 +4,7 @@
 <titleabbrev>Upgrade readiness status</titleabbrev>
 ++++
 
-experimental[] Check the status of your cluster.
+experimental["The underlying Upgrade Assistant concepts are stable, but the APIs for managing Upgrade Assistant are experimental."]
 
 Check the status of your cluster.
 

docs/development/core/public/kibana-plugin-core-public.doclinksstart.links.md

@@ -132,7 +132,10 @@ readonly links: {
         };
         readonly addData: string;
         readonly kibana: string;
-        readonly upgradeAssistant: string;
+        readonly upgradeAssistant: {
+            readonly overview: string;
+            readonly batchReindex: string;
+        };
         readonly rollupJobs: string;
         readonly elasticsearch: Record<string, string>;
         readonly siem: {

src/core/public/doc_links/doc_links_service.ts

@@ -153,7 +153,10 @@ export class DocLinksService {
         },
         addData: `${KIBANA_DOCS}connect-to-elasticsearch.html`,
         kibana: `${KIBANA_DOCS}index.html`,
-        upgradeAssistant: `${KIBANA_DOCS}upgrade-assistant.html`,
+        upgradeAssistant: {
+          overview: `${KIBANA_DOCS}upgrade-assistant.html`,
+          batchReindex: `${KIBANA_DOCS}batch-start-resume-reindex.html`,
+        },
         rollupJobs: `${KIBANA_DOCS}data-rollups.html`,
         elasticsearch: {
           docsBase: `${ELASTICSEARCH_DOCS}`,
@@ -606,7 +609,10 @@ export interface DocLinksStart {
     };
     readonly addData: string;
     readonly kibana: string;
-    readonly upgradeAssistant: string;
+    readonly upgradeAssistant: {
+      readonly overview: string;
+      readonly batchReindex: string;
+    };
     readonly rollupJobs: string;
     readonly elasticsearch: Record<string, string>;
     readonly siem: {

src/core/public/public.api.md

@@ -598,7 +598,10 @@ export interface DocLinksStart {
         };
         readonly addData: string;
         readonly kibana: string;
-        readonly upgradeAssistant: string;
+        readonly upgradeAssistant: {
+            readonly overview: string;
+            readonly batchReindex: string;
+        };
         readonly rollupJobs: string;
         readonly elasticsearch: Record<string, string>;
         readonly siem: {

x-pack/plugins/upgrade_assistant/public/application/components/es_deprecations/es_deprecations.tsx

@@ -8,8 +8,10 @@
 import React, { useEffect, useMemo } from 'react';
 import { withRouter, RouteComponentProps } from 'react-router-dom';
 
-import { EuiPageHeader, EuiSpacer, EuiPageContent } from '@elastic/eui';
+import { EuiPageHeader, EuiSpacer, EuiPageContent, EuiLink } from '@elastic/eui';
 import { i18n } from '@kbn/i18n';
+import { FormattedMessage } from '@kbn/i18n/react';
+import { DocLinksStart } from 'kibana/public';
 import { METRIC_TYPE } from '@kbn/analytics';
 
 import { EnrichedDeprecationInfo } from '../../../../common/types';
@@ -44,16 +46,42 @@ const i18nTexts = {
   }),
   pageDescription: i18n.translate('xpack.upgradeAssistant.esDeprecations.pageDescription', {
     defaultMessage:
-      'You must resolve all critical issues before upgrading. Back up recommended. Make sure you have a current snapshot before modifying your configuration or reindexing.',
+      'Resolve all critical issues before upgrading. Before making changes, ensure you have a current snapshot of your cluster. Some issues may require reindexing to resolve. ',
   }),
   isLoading: i18n.translate('xpack.upgradeAssistant.esDeprecations.loadingText', {
     defaultMessage: 'Loading deprecation issues…',
   }),
 };
 
+const getBatchReindexLink = (docLinks: DocLinksStart) => {
+  return (
+    <FormattedMessage
+      id="xpack.upgradeAssistant.esDeprecations.batchReindexingDocsDescription"
+      defaultMessage="To start multiple reindexing tasks in a single request, use the Kibana {docsLink}."
+      values={{
+        docsLink: (
+          <EuiLink
+            href={docLinks.links.upgradeAssistant.batchReindex}
+            target="_blank"
+            external={true}
+          >
+            {i18n.translate('xpack.upgradeAssistant.esDeprecations.batchReindexingDocsLink', {
+              defaultMessage: 'batch reindexing API',
+            })}
+          </EuiLink>
+        ),
+      }}
+    />
+  );
+};
+
 export const EsDeprecations = withRouter(({ history }: RouteComponentProps) => {
   const {
-    services: { api, breadcrumbs },
+    services: {
+      api,
+      breadcrumbs,
+      core: { docLinks },
+    },
   } = useAppContext();
 
   const { data: esDeprecations, isLoading, error, resendRequest } = api.useLoadEsDeprecations();
@@ -104,7 +132,15 @@ export const EsDeprecations = withRouter(({ history }: RouteComponentProps) => {
 
   return (
     <div data-test-subj="esDeprecationsContent">
-      <EuiPageHeader pageTitle={i18nTexts.pageTitle} description={i18nTexts.pageDescription}>
+      <EuiPageHeader
+        pageTitle={i18nTexts.pageTitle}
+        description={
+          <>
+            {i18nTexts.pageDescription}
+            {getBatchReindexLink(docLinks)}
+          </>
+        }
+      >
         <DeprecationCount
           totalCriticalDeprecations={deprecationsCountByLevel.criticalDeprecations}
           totalWarningDeprecations={deprecationsCountByLevel.warningDeprecations}

x-pack/plugins/upgrade_assistant/public/application/components/overview/overview.tsx

@@ -75,7 +75,7 @@ export const Overview: FunctionComponent = () => {
           })}
           rightSideItems={[
             <EuiButtonEmpty
-              href={docLinks.links.upgradeAssistant}
+              href={docLinks.links.upgradeAssistant.overview}
               target="_blank"
               iconType="help"
               data-test-subj="documentationLink"