Rephrase system requirements into actionable steps

Author: aneta-petrova

guides/common/modules/ref_system-requirements.adoc

@@ -3,105 +3,72 @@
 [id="system-requirements_{context}"]
 = System requirements
 
-The following requirements apply to the networked base operating system:
+ifdef::satellite[]
+{ProductName} is fully supported on both physical systems and virtual machines that run on hypervisors that are supported to run {RHEL}.
+For more information about certified hypervisors, see https://access.redhat.com/articles/973163[Certified Guest Operating Systems in Red Hat OpenStack Platform, Red Hat Virtualization, Red Hat OpenShift Virtualization and Red Hat Enterprise Linux with KVM].
+endif::[]
+
+Follow these system requirements when installing {ProductName}:
 
-* x86_64 architecture
+* Install {ProductName} on a freshly provisioned system that servers no other function except to run {ProductName}.
+Do not use an existing system because the {Project} installer will affect the configuration of several components.
+* Ensure you have administrative user (root) access to the system.
+* Ensure the system meets the following requirements:
+** x86_64 architecture
 ifdef::satellite[]
-* The latest version of {RHEL} 9
+** The latest version of {RHEL} 9
 endif::[]
-* 4-core 2.0 GHz CPU at a minimum
+** 4-core 2.0 GHz CPU or higher
 
 ifeval::["{context}" == "{project-context}"]
-* A minimum of {project-minimum-memory} RAM is required for {ProjectServer} to function.
-ifdef::katello,satellite[]
-In addition, a minimum of 4 GB RAM of swap space is also recommended.
+** {project-minimum-memory} RAM or higher
 endif::[]
-{Project} running with less RAM than the minimum value might not operate correctly.
-endif::[]
-
 ifeval::["{context}" == "{smart-proxy-context}"]
-* A minimum of 12 GB RAM is required for {SmartProxyServer} to function.
-In addition, a minimum of 4 GB RAM of swap space is also recommended.
-{SmartProxy} running with less RAM than the minimum value might not operate correctly.
+** 12 GB RAM or higher
 endif::[]
-
 ifdef::katello,satellite[]
-* A unique host name, which can contain lower-case letters, numbers, dots (.) and hyphens (-)
+** 4 GB RAM of swap space or higher
 endif::[]
 
-ifdef::satellite[]
-* A current {ProjectName} subscription
+ifdef::katello,satellite[]
+** A unique host name, which can contain lower-case letters, numbers, dots (.) and hyphens (-)
 endif::[]
-* Administrative user (root) access
-* Full forward and reverse DNS resolution using a fully-qualified domain name
-
-{Project} only supports `UTF-8` encoding.
-If your territory is USA and your language is English, set `en_US.utf-8` as the system-wide locale settings.
-For more information about configuring system locale in {EL}, see {RHELDocsBaseURL}9/html/configuring_basic_system_settings/assembly_changing-basic-environment-settings_configuring-basic-system-settings#proc_configuring-the-system-locale_assembly_changing-basic-environment-settings[Configuring the system locale] in _{RHEL}{nbsp}9 Configuring basic system settings_.
 
 ifdef::satellite[]
-Your {Project} must have the {SatelliteSub} manifest in your Customer Portal.
-{Project} must have {project-context}-{smart-proxy-context}-6.x repository enabled and synced.
-To create, manage, and export a Red{nbsp}Hat Subscription Manifest in the Customer Portal, see {RHDocsBaseURL}subscription_central/1-latest/html/creating_and_managing_manifests_for_a_connected_satellite_server/index[Creating and managing manifests for a connected {ProjectServer}] in _Subscription Central_.
+** A current {ProjectName} subscription
 endif::[]
+** Full forward and reverse DNS resolution using a fully-qualified domain name
 
-{ProjectServer} and {SmartProxyServer} do not support shortnames in the hostnames.
-When using custom certificates, the Common Name (CN) of the custom certificate must be a fully qualified domain name (FQDN) instead of a shortname.
-This does not apply to the clients of a {Project}.
-
-Before you install {ProductName}, ensure that your environment meets the requirements for installation.
-ifeval::["{context}" == "{smart-proxy-context}"]
-[WARNING]
-====
-The version of {SmartProxy} must match with the version of {Project} installed.
-It should not be different.
-For example, the {SmartProxy} version {ProjectVersion} cannot be registered with the {Project} version {ProjectVersionPrevious}.
-====
-endif::[]
-
-Install {ProductName} on a freshly provisioned system that servers no other function except to run {ProductName}.
-Do not use an existing system because the {Project} installer will affect the configuration of several components.
-
-The freshly provisioned system must not have the following users provided by external identity providers to avoid conflicts with the local users that {ProductName} creates:
-
-* {apache-user}
+* Ensure that the system does not have the following users provided by external identity providers.
+These user accounts can cause conflicts with the local users that {ProductName} creates:
+** {apache-user}
 ifeval::["{context}" == "{project-context}"]
-* foreman
+** foreman
 endif::[]
-* foreman-proxy
-* postgres
+** foreman-proxy
+** postgres
 ifdef::katello,satellite,orcharhino[]
-* pulp
+** pulp
 endif::[]
-* puppet
-* redis
+** puppet
+** redis
 ifdef::katello,satellite,orcharhino[]
 ifeval::["{context}" == "{project-context}"]
-* tomcat
-endif::[]
-endif::[]
-
-ifdef::satellite[]
-ifeval::["{context}" == "{smart-proxy-context}"]
-For more information on scaling your {SmartProxyServers}, see {InstallingSmartProxyDocURL}{smart-proxy-context}-server-scalability-considerations_{smart-proxy-context}[{SmartProxyServer} scalability considerations].
+** tomcat
 endif::[]
 endif::[]
 
-ifdef::satellite[]
-.Certified hypervisors
-{ProductName} is fully supported on both physical systems and virtual machines that run on hypervisors that are supported to run {RHEL}.
-For more information about certified hypervisors, see https://access.redhat.com/articles/973163[Certified Guest Operating Systems in Red Hat OpenStack Platform, Red Hat Virtualization, Red Hat OpenShift Virtualization and Red Hat Enterprise Linux with KVM].
-endif::[]
+* If you use custom certificates, ensure that the Common Name (CN) of the custom certificate is a fully qualified domain name (FQDN).
+Ensure that {ProjectServer} and {SmartProxyServer} do not support shortnames in the hostnames.
+This does not apply to the clients of a {Project}.
 
 ifdef::foreman-el,katello,satellite[]
-.SELinux mode
-SELinux must be enabled, either in enforcing or permissive mode.
+* Ensure that SELinux is enabled, either in enforcing or permissive mode.
 Installation with disabled SELinux is not supported.
 For more information, see {PlanningDocURL}security-considerations[Security considerations] in _{PlanningDocTitle}_.
 endif::[]
 
-.Synchronized system clock
-The system clock on the base operating system where you are installing your {ProductName} must be synchronized across the network.
+* Ensure that the system clock on the system is synchronized across the network.
 If the system clock is not synchronized, SSL certificate verification might fail.
 ifdef::satellite[]
 For example, you can use the Chrony suite for timekeeping.
@@ -110,9 +77,34 @@ endif::[]
 
 ifdef::satellite[]
 ifeval::["{context}" == "{project-context}"]
-.{ISS} (ISS)
-In a scenario with air-gapped {ProjectServer}s, all your {ProjectServer}s must be on the same {Project} version for ISS Export Sync to work.
+* If you are installing in an environment with air-gapped {ProjectServer}s, ensure that all your {ProjectServer}s are on the same {Project} version for ISS Export Sync to work.
 ISS Network Sync works across all {Project} versions that support it.
 For more information, see {ContentManagementDocURL}Synchronizing_Content_Between_Servers_content-management[Synchronizing Content Between {Project} Servers] in _{ContentManagementDocTitle}_.
 endif::[]
 endif::[]
+
+{Project} only supports `UTF-8` encoding.
+If your territory is USA and your language is English, set `en_US.utf-8` as the system-wide locale settings.
+For more information about configuring system locale in {EL}, see {RHELDocsBaseURL}9/html/configuring_basic_system_settings/assembly_changing-basic-environment-settings_configuring-basic-system-settings#proc_configuring-the-system-locale_assembly_changing-basic-environment-settings[Configuring the system locale] in _{RHEL}{nbsp}9 Configuring basic system settings_.
+
+ifdef::satellite[]
+Your {Project} must have the {SatelliteSub} manifest in your Customer Portal.
+{Project} must have {project-context}-{smart-proxy-context}-6.x repository enabled and synced.
+To create, manage, and export a Red{nbsp}Hat Subscription Manifest in the Customer Portal, see {RHDocsBaseURL}subscription_central/1-latest/html/creating_and_managing_manifests_for_a_connected_satellite_server/index[Creating and managing manifests for a connected {ProjectServer}] in _Subscription Central_.
+endif::[]
+
+ifeval::["{context}" == "{smart-proxy-context}"]
+[WARNING]
+====
+The version of {SmartProxy} must match with the version of {Project} installed.
+It should not be different.
+For example, the {SmartProxy} version {ProjectVersion} cannot be registered with the {Project} version {ProjectVersionPrevious}.
+====
+endif::[]
+
+
+ifdef::satellite[]
+ifeval::["{context}" == "{smart-proxy-context}"]
+For more information on scaling your {SmartProxyServers}, see {InstallingSmartProxyDocURL}{smart-proxy-context}-server-scalability-considerations_{smart-proxy-context}[{SmartProxyServer} scalability considerations].
+endif::[]
+endif::[]