[Serverless] Use latest published version for initial agent download

x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/create_package_policy_page/multi_page_layout/components/page_steps/install_agent/install_agent_managed.tsx

@@ -7,10 +7,10 @@
 
 import React, { useState } from 'react';
 import { FormattedMessage } from '@kbn/i18n-react';
-import { EuiText, EuiLink, EuiSteps, EuiSpacer } from '@elastic/eui';
+import { EuiText, EuiLink, EuiSteps, EuiSpacer, EuiLoadingSpinner } from '@elastic/eui';
 
 import { Error } from '../../../../../../../components';
-import { useKibanaVersion, useStartServices } from '../../../../../../../../../hooks';
+import { useStartServices, useAgentVersion } from '../../../../../../../../../hooks';
 
 import { CreatePackagePolicyBottomBar, NotObscuredByBottomBar } from '../..';
 import {
@@ -40,7 +40,7 @@ export const InstallElasticAgentManagedPageStep: React.FC<InstallAgentPageProps>
   const { docLinks } = core;
   const link = docLinks.links.fleet.troubleshooting;
 
-  const kibanaVersion = useKibanaVersion();
+  const agentVersion = useAgentVersion();
 
   const [commandCopied, setCommandCopied] = useState(false);
   const [applyCommandCopied, setApplyCommandCopied] = useState(false);
@@ -66,7 +66,7 @@ export const InstallElasticAgentManagedPageStep: React.FC<InstallAgentPageProps>
     apiKey: enrollmentAPIKey.api_key,
     fleetProxy,
     fleetServerHosts,
-    kibanaVersion,
+    agentVersion: agentVersion || '',
   });
 
   const steps = [
@@ -103,6 +103,10 @@ export const InstallElasticAgentManagedPageStep: React.FC<InstallAgentPageProps>
     })
   );
 
+  if (!agentVersion) {
+    return <EuiLoadingSpinner />;
+  }
+
   return (
     <>
       <EuiText>

x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/create_package_policy_page/single_page_layout/components/post_install_google_cloud_shell_modal.tsx

@@ -10,6 +10,7 @@ import {
   EuiButton,
   EuiButtonEmpty,
   EuiCallOut,
+  EuiLoadingSpinner,
   EuiModal,
   EuiModalBody,
   EuiModalFooter,
@@ -25,7 +26,7 @@ import {
   sendGetEnrollmentAPIKeys,
   useCreateCloudShellUrl,
   useFleetServerHostsForPolicy,
-  useKibanaVersion,
+  useAgentVersion,
 } from '../../../../../hooks';
 import { GoogleCloudShellGuide } from '../../../../../components';
 import { ManualInstructions } from '../../../../../../../components/enrollment_instructions';
@@ -44,18 +45,22 @@ export const PostInstallGoogleCloudShellModal: React.FunctionComponent<{
     })
   );
   const { fleetServerHosts, fleetProxy } = useFleetServerHostsForPolicy(agentPolicy);
-  const kibanaVersion = useKibanaVersion();
+  const agentVersion = useAgentVersion();
+
+  const { cloudShellUrl, error, isError, isLoading } = useCreateCloudShellUrl({
+    enrollmentAPIKey: apyKeysData?.data?.items[0]?.api_key,
+    packagePolicy,
+  });
+
+  if (!agentVersion) {
+    return <EuiLoadingSpinner />;
+  }
 
   const installManagedCommands = ManualInstructions({
     apiKey: apyKeysData?.data?.items[0]?.api_key || 'no_key',
     fleetServerHosts,
     fleetProxy,
-    kibanaVersion,
-  });
-
-  const { cloudShellUrl, error, isError, isLoading } = useCreateCloudShellUrl({
-    enrollmentAPIKey: apyKeysData?.data?.items[0]?.api_key,
-    packagePolicy,
+    agentVersion,
   });
 
   return (

x-pack/plugins/fleet/public/components/agent_enrollment_flyout/agent_enrollment_flyout.test.mocks.tsx

@@ -15,6 +15,7 @@ jest.mock('../../hooks', () => {
     ...jest.requireActual('../../hooks'),
     useFleetServerStandalone: jest.fn(),
     useAgentEnrollmentFlyoutData: jest.fn(),
+    useAgentVersion: jest.fn().mockReturnValue('8.1.0'),
   };
 });
 

x-pack/plugins/fleet/public/components/agent_enrollment_flyout/steps/compute_steps.tsx

@@ -7,7 +7,7 @@
 
 import React, { useState, useMemo, useEffect } from 'react';
 
-import { EuiSteps } from '@elastic/eui';
+import { EuiSteps, EuiLoadingSpinner } from '@elastic/eui';
 import { safeDump } from 'js-yaml';
 
 import type { EuiContainedStepProps } from '@elastic/eui/src/components/steps/steps';
@@ -21,8 +21,8 @@ import { StandaloneInstructions, ManualInstructions } from '../../enrollment_ins
 import {
   useGetOneEnrollmentAPIKey,
   useStartServices,
-  useKibanaVersion,
   sendGetOneAgentPolicyFull,
+  useAgentVersion,
 } from '../../../hooks';
 
 import type { InstructionProps } from '../types';
@@ -59,7 +59,6 @@ export const StandaloneSteps: React.FunctionComponent<InstructionProps> = ({
   const { notifications } = core;
   const [fullAgentPolicy, setFullAgentPolicy] = useState<FullAgentPolicy | undefined>();
   const [yaml, setYaml] = useState<any | undefined>('');
-  const kibanaVersion = useKibanaVersion();
 
   let downloadLink = '';
 
@@ -123,8 +122,10 @@ export const StandaloneSteps: React.FunctionComponent<InstructionProps> = ({
     }
   }, [fullAgentPolicy, isK8s]);
 
+  const agentVersion = useAgentVersion();
+
   const instructionsSteps = useMemo(() => {
-    const standaloneInstallCommands = StandaloneInstructions(kibanaVersion);
+    const standaloneInstallCommands = StandaloneInstructions(agentVersion || '');
 
     const steps: EuiContainedStepProps[] = !agentPolicy
       ? [
@@ -164,7 +165,7 @@ export const StandaloneSteps: React.FunctionComponent<InstructionProps> = ({
 
     return steps;
   }, [
-    kibanaVersion,
+    agentVersion,
     isK8s,
     cloudSecurityIntegration,
     agentPolicy,
@@ -181,6 +182,10 @@ export const StandaloneSteps: React.FunctionComponent<InstructionProps> = ({
     setMode,
   ]);
 
+  if (!agentVersion) {
+    return <EuiLoadingSpinner />;
+  }
+
   return <EuiSteps steps={instructionsSteps} />;
 };
 
@@ -202,7 +207,6 @@ export const ManagedSteps: React.FunctionComponent<InstructionProps> = ({
   cloudSecurityIntegration,
   installedPackagePolicy,
 }) => {
-  const kibanaVersion = useKibanaVersion();
   const core = useStartServices();
   const { docLinks } = core;
   const link = docLinks.links.fleet.troubleshooting;
@@ -214,11 +218,13 @@ export const ManagedSteps: React.FunctionComponent<InstructionProps> = ({
 
   const enrolledAgentIds = usePollingAgentCount(selectedPolicy?.id || '');
 
+  const agentVersion = useAgentVersion();
+
   const installManagedCommands = ManualInstructions({
     apiKey: enrollToken,
     fleetServerHosts,
     fleetProxy,
-    kibanaVersion,
+    agentVersion: agentVersion || '',
   });
 
   const instructionsSteps = useMemo(() => {
@@ -326,5 +332,9 @@ export const ManagedSteps: React.FunctionComponent<InstructionProps> = ({
     installedPackagePolicy,
   ]);
 
+  if (!agentVersion) {
+    return <EuiLoadingSpinner />;
+  }
+
   return <EuiSteps steps={instructionsSteps} />;
 };

x-pack/plugins/fleet/public/components/enrollment_instructions/manual/index.tsx

@@ -27,44 +27,44 @@ export const ManualInstructions = ({
   apiKey,
   fleetServerHosts,
   fleetProxy,
-  kibanaVersion,
+  agentVersion: agentVersion,
 }: {
   apiKey: string;
   fleetServerHosts: string[];
   fleetProxy?: FleetProxy;
-  kibanaVersion: string;
+  agentVersion: string;
 }) => {
   const enrollArgs = getfleetServerHostsEnrollArgs(apiKey, fleetServerHosts, fleetProxy);
   const fleetServerUrl = enrollArgs?.split('--url=')?.pop()?.split('--enrollment')[0];
   const enrollmentToken = enrollArgs?.split('--enrollment-token=')[1];
 
   const k8sCommand = 'kubectl apply -f elastic-agent-managed-kubernetes.yml';
 
-  const linuxCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-linux-x86_64.tar.gz
-tar xzvf elastic-agent-${kibanaVersion}-linux-x86_64.tar.gz
-cd elastic-agent-${kibanaVersion}-linux-x86_64
+  const linuxCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-linux-x86_64.tar.gz
+tar xzvf elastic-agent-${agentVersion}-linux-x86_64.tar.gz
+cd elastic-agent-${agentVersion}-linux-x86_64
 sudo ./elastic-agent install ${enrollArgs}`;
 
-  const macCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-darwin-x86_64.tar.gz
-tar xzvf elastic-agent-${kibanaVersion}-darwin-x86_64.tar.gz
-cd elastic-agent-${kibanaVersion}-darwin-x86_64
+  const macCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-darwin-x86_64.tar.gz
+tar xzvf elastic-agent-${agentVersion}-darwin-x86_64.tar.gz
+cd elastic-agent-${agentVersion}-darwin-x86_64
 sudo ./elastic-agent install ${enrollArgs}`;
 
   const windowsCommand = `$ProgressPreference = 'SilentlyContinue'
-Invoke-WebRequest -Uri https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-windows-x86_64.zip -OutFile elastic-agent-${kibanaVersion}-windows-x86_64.zip
-Expand-Archive .\\elastic-agent-${kibanaVersion}-windows-x86_64.zip -DestinationPath .
-cd elastic-agent-${kibanaVersion}-windows-x86_64
+Invoke-WebRequest -Uri https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-windows-x86_64.zip -OutFile elastic-agent-${agentVersion}-windows-x86_64.zip
+Expand-Archive .\\elastic-agent-${agentVersion}-windows-x86_64.zip -DestinationPath .
+cd elastic-agent-${agentVersion}-windows-x86_64
 .\\elastic-agent.exe install ${enrollArgs}`;
 
-  const linuxDebCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-amd64.deb
-sudo dpkg -i elastic-agent-${kibanaVersion}-amd64.deb
+  const linuxDebCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-amd64.deb
+sudo dpkg -i elastic-agent-${agentVersion}-amd64.deb
 sudo elastic-agent enroll ${enrollArgs} \nsudo systemctl enable elastic-agent \nsudo systemctl start elastic-agent`;
 
-  const linuxRpmCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-x86_64.rpm
-sudo rpm -vi elastic-agent-${kibanaVersion}-x86_64.rpm
+  const linuxRpmCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-x86_64.rpm
+sudo rpm -vi elastic-agent-${agentVersion}-x86_64.rpm
 sudo elastic-agent enroll ${enrollArgs} \nsudo systemctl enable elastic-agent \nsudo systemctl start elastic-agent`;
 
-  const googleCloudShellCommand = `gcloud config set project <PROJECT_ID> && \nFLEET_URL=${fleetServerUrl} ENROLLMENT_TOKEN=${enrollmentToken} STACK_VERSION=${kibanaVersion} ./deploy.sh`;
+  const googleCloudShellCommand = `gcloud config set project <PROJECT_ID> && \nFLEET_URL=${fleetServerUrl} ENROLLMENT_TOKEN=${enrollmentToken} STACK_VERSION=${agentVersion} ./deploy.sh`;
 
   return {
     linux: linuxCommand,

x-pack/plugins/fleet/public/components/enrollment_instructions/standalone/index.tsx

@@ -6,27 +6,27 @@
  */
 import type { CommandsByPlatform } from '../../../applications/fleet/components/fleet_server_instructions/utils/install_command_utils';
 
-export const StandaloneInstructions = (kibanaVersion: string): CommandsByPlatform => {
-  const linuxDebCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-amd64.deb
-sudo dpkg -i elastic-agent-${kibanaVersion}-amd64.deb \nsudo systemctl enable elastic-agent \nsudo systemctl start elastic-agent`;
+export const StandaloneInstructions = (agentVersion: string): CommandsByPlatform => {
+  const linuxDebCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-amd64.deb
+sudo dpkg -i elastic-agent-${agentVersion}-amd64.deb \nsudo systemctl enable elastic-agent \nsudo systemctl start elastic-agent`;
 
-  const linuxRpmCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-x86_64.rpm
-sudo rpm -vi elastic-agent-${kibanaVersion}-x86_64.rpm \nsudo systemctl enable elastic-agent \nsudo systemctl start elastic-agent`;
+  const linuxRpmCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-x86_64.rpm
+sudo rpm -vi elastic-agent-${agentVersion}-x86_64.rpm \nsudo systemctl enable elastic-agent \nsudo systemctl start elastic-agent`;
 
-  const linuxCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-linux-x86_64.tar.gz
-tar xzvf elastic-agent-${kibanaVersion}-linux-x86_64.tar.gz
-cd elastic-agent-${kibanaVersion}-linux-x86_64
+  const linuxCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-linux-x86_64.tar.gz
+tar xzvf elastic-agent-${agentVersion}-linux-x86_64.tar.gz
+cd elastic-agent-${agentVersion}-linux-x86_64
 sudo ./elastic-agent install`;
 
-  const macCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-darwin-x86_64.tar.gz
-tar xzvf elastic-agent-${kibanaVersion}-darwin-x86_64.tar.gz
-cd elastic-agent-${kibanaVersion}-darwin-x86_64
+  const macCommand = `curl -L -O https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-darwin-x86_64.tar.gz
+tar xzvf elastic-agent-${agentVersion}-darwin-x86_64.tar.gz
+cd elastic-agent-${agentVersion}-darwin-x86_64
 sudo ./elastic-agent install`;
 
   const windowsCommand = `$ProgressPreference = 'SilentlyContinue'
-Invoke-WebRequest -Uri https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${kibanaVersion}-windows-x86_64.zip -OutFile elastic-agent-${kibanaVersion}-windows-x86_64.zip
-Expand-Archive .\elastic-agent-${kibanaVersion}-windows-x86_64.zip -DestinationPath .
-cd elastic-agent-${kibanaVersion}-windows-x86_64
+Invoke-WebRequest -Uri https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-${agentVersion}-windows-x86_64.zip -OutFile elastic-agent-${agentVersion}-windows-x86_64.zip
+Expand-Archive .\elastic-agent-${agentVersion}-windows-x86_64.zip -DestinationPath .
+cd elastic-agent-${agentVersion}-windows-x86_64
 .\\elastic-agent.exe install`;
 
   const k8sCommand = 'kubectl apply -f elastic-agent-standalone-kubernetes.yml';

x-pack/plugins/fleet/public/hooks/index.ts

@@ -34,3 +34,4 @@ export * from './use_fleet_server_standalone';
 export * from './use_locator';
 export * from './use_create_cloud_formation_url';
 export * from './use_create_cloud_shell_url';
+export * from './use_agent_version';

x-pack/plugins/fleet/public/hooks/use_agent_version.ts

@@ -0,0 +1,37 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { useEffect, useState } from 'react';
+
+import { useKibanaVersion } from './use_kibana_version';
+import { sendGetAgentsAvailableVersions } from './use_request';
+
+/**
+ * @returns The most recent agent version available to install or upgrade to.
+ */
+export const useAgentVersion = (): string | undefined => {
+  const kibanaVersion = useKibanaVersion();
+  const [agentVersion, setAgentVersion] = useState<string | undefined>(undefined);
+
+  useEffect(() => {
+    const getVersions = async () => {
+      try {
+        const res = await sendGetAgentsAvailableVersions();
+        // if the endpoint returns an error, use the fallback versions
+        const versionsList = res?.data?.items ? res.data.items : [kibanaVersion];
+
+        setAgentVersion(versionsList[0]);
+      } catch (err) {
+        return;
+      }
+    };
+
+    getVersions();
+  }, [kibanaVersion]);
+
+  return agentVersion;
+};