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Mar 14, 2018
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Updates to rpm vs containerized topic #8118

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31 changes: 18 additions & 13 deletions install_config/install/rpm_vs_containerized.adoc
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Expand Up @@ -13,29 +13,34 @@ toc::[]

== RPM vs Containerized Installation

An RPM installation installs all services through package management and
configures services to run within the same user space, while a containerized
installation installs services using container images and runs separate services
in individual containers.
You can opt to install {product-title} using the RPM or containerized package
method. Either installation method results in a working environment, but the
choice comes from the operating system and how you choose to update your hosts.

[IMPORTANT]
====
The default method for installing {product-title} on
ifdef::openshift-origin[]
Fedora, CentOS, or RHEL
endif::[]
ifdef::openshift-enterprise[]
Red Hat Enterprise Linux (RHEL)
endif::[]
uses RPMs.

[IMPORTANT]
====
When targeting a Red Hat Atomic Host system, the containerized method is the
only available option, and is automatically selected for you based on the
detection of the *_/run/ostree-booted_* file.
uses RPMs. When targeting a Red Hat Atomic Host system, the
containerized method is the only available option, and is automatically selected
for you based on the detection of the *_/run/ostree-booted_* file.
====

The following table outlines the differences between the RPM and Containerized
methods:
When using RPMs, all services are installed and updated via package management
from an outside source. These modify a host's existing configuration within the
same user space. Alternatively, containerized installs instead are a complete,
all-in-one resource using container images and its own operating system within
the container. Any updated, newer containers replace any existing ones on your
host. Choosing one method over the other depends on how you choose to update
{product-title} in the future.

The following table outlines further differences between the RPM and
Containerized methods:

[cols="h,2*",options="header"]
|===
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