doc/userguide: provide more RPM doc

- Address the various RPM distributions
- User info
- Systemd info

Related issue: #5884

doc/userguide/install.rst

@@ -150,28 +150,81 @@ For Debian 10 (buster), for instance, run the following as ``root``::
     apt-get update
     apt-get install suricata -t buster-backports
 
-Fedora
+CentOS, AlmaLinux, RockyLinux, Fedora, etc
-^^^^^^
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-The following is an example of installing Suricata 6.0 on Fedora. If you wish to install 5.0 instead, change the version in *@oisf/suricata-6.0*.
+RPMs are provided for the latest release of *Enterprise Linux*. This
+includes CentOS Linux and rebuilds such as AlmaLinux and RockyLinux.
+Additionally, RPMs are provided for the latest supported versions of Fedora.
 
-::
+RPMs specifically for CentOS Stream are not provided, however the RPMs for their
+related version may work fine.
 
-    dnf install dnf-plugins-core
+Installing From Package Repositories
-    dnf copr enable @oisf/suricata-6.0
+""""""""""""""""""""""""""""""""""""
-    dnf install suricata
 
-RHEL/CentOS 8 and 7
+CentOS, RHEL, AlmaLinux, RockyLinux, etc Version 8+
-^^^^^^^^^^^^^^^^^^^
+'''''''''''''''''''''''''''''''''''''''''''''''''''
+
+.. code-block:: none
+
+   dnf install epel-release dnf-plugins-core
+   dnf copr enable @oisf/suricata-7.0
+   dnf install suricata
 
-The following is an example of installing Suricata 6.0 on CentOS. If you wish to install 5.0 instead, change the version in *@oisf/suricata-6.0*.
+CentOS 7
+''''''''
 
-::
+.. code-block:: none
 
    yum install epel-release yum-plugin-copr
-    yum copr enable @oisf/suricata-6.0
+   yum copr enable @oisf/suricata-7.0
    yum install suricata
 
+Fedora
+''''''
+
+.. code-block:: none
+
+    dnf install dnf-plugins-core
+    dnf copr enable @oisf/suricata-7.0
+    dnf install suricata
+
+Additional Notes for RPM Installations
+""""""""""""""""""""""""""""""""""""""
+
+- Suricata is pre-configured to run as the ``suricata`` user.
+- Command line parameters such as providing the interface names can be
+  configured in ``/etc/sysconfig/suricata``.
+- Users can run ``suricata-update`` without being root provided they
+  are added to the ``suricata`` group.
+- Directories:
+
+  - ``/etc/suricata``: Configuration directory
+  - ``/var/log/suricata``: Log directory
+  - ``/var/lib/suricata``: State directory rules, datasets.
+
+Starting Suricata On-Boot
+'''''''''''''''''''''''''
+
+The Suricata RPMs are configured to run from Systemd.
+
+To start Suricata::
+
+  systemctl start suricata
+
+To stop Suricata::
+
+  systemctl stop suricata
+
+To have Suricata start on-boot::
+
+  systemctl enable suricata
+
+To reload rules::
+
+   systemctl reload suricata
+
 .. _install-advanced:
 
 Advanced Installation