Remove limitations topic from Fleet and Agent docs (#947)

* Remove limitations topic

* Add superuser role requirement

* Mention that agents must have direct connection to fleet server and es

docs/en/ingest-management/agent-policies.asciidoc

@@ -202,6 +202,10 @@ Any agents assigned to a policy must be unenrolled or assigned to a different po
 [[integration-updates]]
 == Integration updates
 
+NOTE: An internet connection is required for {kib} to download integration packages
+from the Elastic Package Registry. Make sure the {kib} server can connect to
+`https://epr.elastic.co` on port `443`.
+
 Elastic releases integration updates periodically.
 Through the online Elastic Package Registry and the {kib} Elastic Package Manager, Integrations are delivered to the {stack}. When Elastic releases a new Integration, it shows up in the Integrations listing in {kib} after a restart (like during a stack upgrade).
 // to do: link to the Fleet API docs

docs/en/ingest-management/elastic-agent/elastic-agent.asciidoc

@@ -59,5 +59,3 @@ include::configuration/env/container-envs.asciidoc[leveloffset=+1]
 include::elastic-agent-logging.asciidoc[leveloffset=+1]
 
 include::elastic-agent-standalone-logging.asciidoc[leveloffset=+1]
-
-include::redirects.asciidoc[leveloffset=+1]

docs/en/ingest-management/elastic-agent/install-elastic-agent.asciidoc

@@ -40,15 +40,22 @@ here.
 
 **Prerequisites:**
 
-// TODO: Add a link to the topic about enrollment tokens (instead of the quick start)
-// when the topic is available.
+* {fleet} is currently only available to users with the
+{ref}/built-in-roles.html[superuser role].
 
 * A {fleet-server} must be running in a location accessible to the {agent}. See
 <<fleet-server>>.
 
+* In order to use {fleet}, the {agent}s must have a direct network connection
+to {fleet-server} and {es}.
+
+* An internet connection is required for {kib} to download integration packages
+from the Elastic Package Registry. Make sure the {kib} server can connect to
+`https://epr.elastic.co` on port `443`.
+
 * You must have an enrollment token generated by {fleet}. Don't have a {fleet}
-enrollment key? Read the {fleet-guide}/fleet-quick-start.html[Quick start
-guide] to learn how to get one from {fleet}.
+enrollment key? Read <<fleet-enrollment-tokens>> to learn how to get one from
+{fleet}.
 
 * You must have the host and IP where {fleet-server} is running. Not sure where
 it's running? Look at the {fleet} settings in {kib}.

docs/en/ingest-management/elastic-agent/upgrade-elastic-agent.asciidoc

@@ -6,7 +6,7 @@ experimental[]
 
 [discrete]
 [[upgrade-agent]]
-== Upgrade {agent}
+== Upgrade {fleet}-managed {agent}s
 
 Starting with version 7.10, {fleet} provides upgrade capabilities. You can view
 and select agents that are out of date, and trigger selected agents to download,
@@ -16,8 +16,10 @@ This approach simplifies the process of keeping your agents up to date. It also
 saves you time because you don’t need third-party tools or processes to
 manage upgrades.
 
+{agent}s require internet access to perform binary upgrades from {fleet}.
+
 NOTE: The upgrade feature is not supported for upgrading DEB/RPM packages or
-Docker images. 
+Docker images.
 
 To upgrade {agent} to a new version:
 

docs/en/ingest-management/getting-started-traces.asciidoc

@@ -16,8 +16,6 @@ For feedback and questions, please contact us in the {forum}[discuss forum].
 [[fleet-prereqs-traces]]
 == Prerequisites
 
-* Please read the <<fleet-limitations,Fleet limitations>>.
-
 * The APM integration is experimental and has a number of known limitations.
 Please read the list of {apm-server-ref-v}/apm-integration.html[known limitations].
 
@@ -32,6 +30,13 @@ Here's what you need for each deployment type:
 include::{tab-widgets}/prereq-widget.asciidoc[]
 --
 
+* An internet connection is required for {kib} to download integration packages
+from the Elastic Package Registry. Make sure the {kib} server can connect to
+`https://epr.elastic.co` on port `443`.
+
+* {fleet} is currently only available to users with the
+{ref}/built-in-roles.html[superuser role].
+
 [discrete]
 [[set-up-fleet-traces]]
 == Step 1: Set up {fleet}

docs/en/ingest-management/getting-started.asciidoc

@@ -16,8 +16,6 @@ For feedback and questions, please contact us in the {forum}[discuss forum].
 [[fleet-prereqs]]
 == Prerequisites
 
-* Please read <<fleet-limitations>>.
-
 * You need {es} for storing and searching your data, and {kib} for visualizing and
 managing it. You can use our
 {ess-product}[hosted {ess}]
@@ -29,6 +27,13 @@ Here's what you need for each deployment type:
 include::{tab-widgets}/prereq-widget.asciidoc[]
 --
 
+* An internet connection is required for {kib} to download integration packages
+from the Elastic Package Registry. Make sure the {kib} server can connect to
+`https://epr.elastic.co` on port `443`.
+
+* {fleet} is currently only available to users with the
+{ref}/built-in-roles.html[superuser role].
+
 [discrete]
 [[set-up-fleet]]
 == Step 1: Set up {fleet}

docs/en/ingest-management/index.asciidoc

@@ -32,8 +32,6 @@ include::overview.asciidoc[leveloffset=+1]
 
 include::beats-agent-comparison.asciidoc[leveloffset=+1]
 
-include::fleet/fleet-limitations.asciidoc[leveloffset=+1]
-
 include::getting-started.asciidoc[leveloffset=+1]
 
 include::getting-started-traces.asciidoc[leveloffset=+1]
@@ -61,3 +59,5 @@ include::faq.asciidoc[leveloffset=+1]
 include::release-notes/release-notes-7.14.asciidoc[leveloffset=+1]
 
 include::fleet/fleet-api-docs.asciidoc[leveloffset=+1]
+
+include::redirects.asciidoc[leveloffset=+1]

docs/en/ingest-management/elastic-agent/redirects.asciidoc → docs/en/ingest-management/redirects.asciidoc

@@ -8,3 +8,8 @@ The following pages have moved or been deleted.
 
 See <<run-elastic-agent-standalone>>.
 
+[role="exclude",id="fleet-limitations"]
+== Limitations of this release
+
+See <<beats-agent-comparison>>.
+