[Fleet] Expose `agent.features.disable_policy_change_acks` in fleet settings

[michel-laterman]

As a part of: elastic/elastic-agent#9931
we have added a new feature flag to the agent config: agent.features.disable_policy_change_acks that was added in v9.2.0 with the default set to enabled: false.

We need to expose this setting through the UI as a policy setting alongside the FQDN and tamper protection settings. This flag should it's default setting be set to enabled: true in a later release.

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[kpollich]

These advanced settings can be expanded without TypeScript knowledge by editing this schema definition here:

kibana/x-pack/platform/plugins/shared/fleet/common/settings/agent_policy_settings.tsx

Lines 27 to 256 in b138d4d

	export const AGENT_POLICY_ADVANCED_SETTINGS: SettingsConfig[] = [
	{
	name: 'agent.limits.go_max_procs',
	title: i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.goMaxProcsTitle', {
	defaultMessage: 'Limit CPU usage',
	}),
	description: () =>
	i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.goMaxProcsDescription', {
	defaultMessage: 'Limits the maximum number of CPUs that can be executing simultaneously.',
	}),
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/agent-policy.html#agent-policy-limit-cpu',
	api_field: {
	name: 'agent_limits_go_max_procs',
	},
	schema: z.number().int().min(0),
	example_value: 10,
	},
	{
	name: 'agent.download.timeout',
	hidden: true,
	title: i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.downloadTimeoutTitle', {
	defaultMessage: 'Agent binary download timeout',
	}),
	description: () =>
	i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.downloadTimeoutDescription', {
	defaultMessage: 'Timeout for downloading the agent binary.',
	}),
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/enable-custom-policy-settings.html#configure-agent-download-timeout',
	api_field: {
	name: 'agent_download_timeout',
	},
	schema: zodStringWithDurationValidation,
	example_value: '10m',
	},
	{
	name: 'agent.download.target_directory',
	hidden: true,
	api_field: {
	name: 'agent_download_target_directory',
	},
	title: i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.agentDownloadTargetDirectoryTitle',
	{
	defaultMessage: 'Agent binary target directory',
	}
	),
	description: () =>
	i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.agentDownloadTargetDirectoryDescription',
	{
	defaultMessage: 'The disk path to which the agent binary will be downloaded.',
	}
	),
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/elastic-agent-standalone-download.html',
	schema: z.string(),
	example_value: '/tmp/test',
	},
	{
	name: 'agent.logging.metrics.period',
	hidden: true,
	api_field: {
	name: 'agent_logging_metrics_period',
	},
	title: i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.agentLoggingMetricsPeriodTitle',
	{
	defaultMessage: 'Agent logging metrics period',
	}
	),
	description: () =>
	i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.agentLoggingMetricsPeriodDescription',
	{
	defaultMessage: 'The frequency of logging the internal Elastic Agent metrics.',
	}
	),
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/elastic-agent-standalone-logging-config.html#elastic-agent-standalone-logging-settings',
	schema: zodStringWithDurationValidation,
	example_value: '10m',
	},
	{
	name: 'agent.logging.level',
	title: i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.agentLoggingLevelTitle', {
	defaultMessage: 'Agent logging level',
	}),
	description: ({ renderer }) => (
	<FormattedMessage
	id="xpack.fleet.settings.agentPolicyAdvanced.agentLoggingLevelDescription"
	defaultMessage="Sets the log level for all the agents on the policy. The default log level is {level}."
	values={{ level: renderer.renderCode(DEFAULT_LOG_LEVEL) }}
	/>
	),
	api_field: {
	name: 'agent_logging_level',
	},
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/agent-policy.html#agent-policy-log-level',
	schema: z.enum(AGENT_LOG_LEVELS).default(DEFAULT_LOG_LEVEL),
	example_value: 'info',
	},
	{
	name: 'agent.logging.to_files',
	title: i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.agentLoggingToFilesTitle', {
	defaultMessage: 'Agent logging to files',
	}),
	description: () => (
	<FormattedMessage
	id="xpack.fleet.settings.agentPolicyAdvanced.agentLoggingToFilesDescription"
	defaultMessage="Enables logging to rotating files."
	/>
	),
	api_field: {
	name: 'agent_logging_to_files',
	},
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/elastic-agent-standalone-logging-config.html#elastic-agent-standalone-logging-settings',
	schema: z.boolean().default(true),
	example_value: true,
	},
	{
	name: 'agent.logging.files.rotateeverybytes',
	title: i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.agentLoggingFileSizeTitle', {
	defaultMessage: 'Agent logging file size limit',
	}),
	description: () => (
	<FormattedMessage
	id="xpack.fleet.settings.agentPolicyAdvanced.agentLoggingFileSizeDescription"
	defaultMessage="Configure log file size limit in bytes. If limit is reached, log file will be automatically rotated."
	/>
	),
	api_field: {
	name: 'agent_logging_files_rotateeverybytes',
	},
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/elastic-agent-standalone-logging-config.html#elastic-agent-standalone-logging-settings',
	schema: z.number().int().min(0),
	example_value: 10,
	},
	{
	name: 'agent.logging.files.keepfiles',
	title: i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.agentLoggingFileLimitTitle', {
	defaultMessage: 'Agent logging number of files',
	}),
	description: () => (
	<FormattedMessage
	id="xpack.fleet.settings.agentPolicyAdvanced.agentLoggingFileLimitDescription"
	defaultMessage="Number of rotated log files to keep. Oldest files will be deleted first."
	/>
	),
	api_field: {
	name: 'agent_logging_files_keepfiles',
	},
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/elastic-agent-standalone-logging-config.html#elastic-agent-standalone-logging-settings',
	schema: z.number().int().min(0),
	example_value: 10,
	},
	{
	name: 'agent.logging.files.interval',
	title: i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.agentLoggingFileIntervalTitle',
	{
	defaultMessage: 'Agent logging file rotation interval',
	}
	),
	description: () => (
	<FormattedMessage
	id="xpack.fleet.settings.agentPolicyAdvanced.agentLoggingFileIntervalDescription"
	defaultMessage="Enable log file rotation on time intervals in addition to size-based rotation, i.e. 1s, 1m , 1h, 24h."
	/>
	),
	api_field: {
	name: 'agent_logging_files_interval',
	},
	learnMoreLink:
	'https://www.elastic.co/guide/en/fleet/current/elastic-agent-standalone-logging-config.html#elastic-agent-standalone-logging-settings',
	schema: zodStringWithDurationValidation,
	example_value: '10m',
	},
	{
	name: 'agent.monitoring._runtime_experimental',
	title: i18n.translate('xpack.fleet.settings.agentPolicyAdvanced.monitoringRuntimeTitle', {
	defaultMessage: 'Monitoring runtime (experimental)',
	}),
	description: () => (
	<FormattedMessage
	id="xpack.fleet.settings.agentPolicyAdvanced.monitoringRuntimeDescription"
	defaultMessage="Change how the Beat inputs used for Elastic Agent self-monitored are executed."
	/>
	),
	api_field: {
	name: 'agent_monitoring_runtime_experimental',
	},
	schema: z.enum(['', 'process', 'otel']).default(''),
	example_value: 'otel',
	options: [
	{
	value: '',
	text: i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.monitoringRuntimeDefaultLabel',
	{
	defaultMessage: 'Default',
	}
	),
	},
	{
	value: 'process',
	text: i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.monitoringRuntimeProcessLabel',
	{
	defaultMessage: 'Process',
	}
	),
	},
	{
	value: 'otel',
	text: i18n.translate(
	'xpack.fleet.settings.agentPolicyAdvanced.monitoringRuntimeOtelLabel',
	{
	defaultMessage: 'OTel',
	}
	),
	},
	],
	},
	];

We can prioritize this, but it should be relatively easy for an agent engineer to add the setting in a Kibana PR.