Installing Satellite Server in a connected network environment

The following requirements apply to the networked base operating system:

Satellite 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 Red Hat Enterprise Linux, see Configuring the system locale in Red Hat Enterprise Linux 9 Configuring basic system settings.

Your Satellite must have the Red Hat Satellite Infrastructure Subscription manifest in your Customer Portal. Satellite must have satellite-capsule-6.x repository enabled and synced. To create, manage, and export a Red Hat Subscription Manifest in the Customer Portal, see Creating and managing manifests for a connected Satellite Server in Subscription Central.

Satellite Server and Capsule Server 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 Satellite.

Before you install Satellite Server, ensure that your environment meets the requirements for installation.

Satellite Server must be installed on a freshly provisioned system that serves no other function except to run Satellite Server. The freshly provisioned system must not have the following users provided by external identity providers to avoid conflicts with the local users that Satellite Server creates:

Satellite Server is fully supported on both physical systems and virtual machines that run on hypervisors that are supported to run Red Hat Enterprise Linux. For more information about certified hypervisors, see Certified Guest Operating Systems in Red Hat OpenStack Platform, Red Hat Virtualization, Red Hat OpenShift Virtualization and Red Hat Enterprise Linux with KVM.

SELinux must be enabled, either in enforcing or permissive mode. Installation with disabled SELinux is not supported.

The system clock on the base operating system where you are installing your Satellite Server must be synchronized across the network. If the system clock is not synchronized, SSL certificate verification might fail. For example, you can use the Chrony suite for timekeeping. For more information, see the following documents:

You can install Satellite on a Red Hat Enterprise Linux system that is operating in FIPS mode. You cannot enable FIPS mode after the installation of Satellite. For more information, see Switching RHEL to FIPS mode in Red Hat Enterprise Linux 9 Security hardening or Switching RHEL to FIPS mode in Red Hat Enterprise Linux 8 Security hardening.

In a scenario with air-gapped Satellite Servers, all your Satellite Servers must be on the same Satellite version for ISS Export Sync to work. ISS Network Sync works across all Satellite versions that support it. For more information, see Synchronizing Content Between Satellite Servers in Managing content.

The following table details storage requirements for specific directories. These values are based on expected use case scenarios and can vary according to individual environments.

The runtime size was measured with Red Hat Enterprise Linux 7, 8, and 9 repositories synchronized.

For external database servers: /var/lib/pgsql with installation size of 100 MB and runtime size of 20 GB.

For detailed information on partitioning and size, see Disk partitions in Red Hat Enterprise Linux 9 Managing storage devices.

Consider the following guidelines when installing Satellite Server to increase efficiency.

You can use the storage-benchmark script to get this data. For more information on using the storage-benchmark script, see Impact of Disk Speed on Satellite Operations.

Log files are written to /var/log/messages/, /var/log/httpd/, and /var/lib/foreman-proxy/openscap/content/. You can manage the size of these files using logrotate. For more information, see How to use logrotate utility to rotate log files.

The exact amount of storage you require for log messages depends on your installation and setup.

When the /var/lib/pulp directory is mounted using an NFS share, SELinux blocks the synchronization process. To avoid this, specify the SELinux context of the /var/lib/pulp directory in the file system table by adding the following lines to /etc/fstab:

If NFS share is already mounted, remount it using the above configuration and enter the following command:

Packages that are duplicated in different repositories are only stored once on the disk. Additional repositories containing duplicate packages require less additional storage. The bulk of storage resides in the /var/lib/pulp/ directory. These end points are not manually configurable. Ensure that storage is available on the /var file system to prevent storage problems.

You cannot use symbolic links for /var/lib/pulp/.

If you plan to synchronize RHEL content ISOs to Satellite, note that all minor versions of Red Hat Enterprise Linux also synchronize. You must plan to have adequate storage on your Satellite to manage this.

You can install the operating system from a disc, local ISO image, Kickstart, or any other method that Red Hat supports. Red Hat Satellite Server is supported on the latest versions of Red Hat Enterprise Linux 9 and Red Hat Enterprise Linux 8 that are available at the time when Satellite Server is installed. Previous versions of Red Hat Enterprise Linux including EUS or z-stream are not supported.

The following operating systems are supported by the installer, have packages, and are tested for deploying Satellite:

Red Hat advises against using an existing system because the Satellite installer will affect the configuration of several components. Red Hat Satellite Server requires a Red Hat Enterprise Linux installation with the @Base package group with no other package-set modifications, and without third-party configurations or software not directly necessary for the direct operation of the server. This restriction includes hardening and other non-Red Hat security software. If you require such software in your infrastructure, install and verify a complete working Satellite Server first, then create a backup of the system before adding any non-Red Hat software.

Red Hat does not support using the system for anything other than running Satellite Server.

Satellite supports recent versions of Firefox and Google Chrome browsers.

The Satellite web UI and command-line interface support English, Simplified Chinese, Japanese, French.

For the components of Satellite architecture to communicate, ensure that the required network ports are open and free on the base operating system. You must also ensure that the required network ports are open on any network-based firewalls.

Use this information to configure any network-based firewalls. Note that some cloud solutions must be specifically configured to allow communications between machines because they isolate machines similarly to network-based firewalls. If you use an application-based firewall, ensure that the application-based firewall permits all applications that are listed in the tables and known to your firewall. If possible, disable the application checking and allow open port communication based on the protocol.

Satellite Server has an integrated Capsule and any host that is directly connected to Satellite Server is a Client of Satellite in the context of this section. This includes the base operating system on which Capsule Server is running.

Hosts which are clients of Capsules, other than Satellite’s integrated Capsule, do not need access to Satellite Server. For more information on Satellite Topology and an illustration of port connections, see Capsule Networking in Overview, concepts, and deployment considerations.

Required ports can change based on your configuration.

The following tables indicate the destination port and the direction of network traffic:

Any host that is directly connected to Satellite Server is a client in this context because it is a client of the integrated Capsule. This includes the base operating system on which a Capsule Server is running.

A DHCP Capsule performs ICMP ping or TCP echo connection attempts to hosts in subnets with DHCP IPAM set to find out if an IP address considered for use is free. This behavior can be turned off using satellite-installer --foreman-proxy-dhcp-ping-free-ip=false.

Capsules and Content Hosts that are clients of a Satellite Server’s internal Capsule require access through Satellite’s host-based firewall and any network-based firewalls.

Use this procedure to configure the host-based firewall on the system that Satellite is installed on, to enable incoming connections from Clients, and to make the configuration persistent across system reboots. For more information on the ports used, see Port and firewall requirements in Installing Satellite Server in a connected network environment.

For more information, see Using and configuring firewalld in Red Hat Enterprise Linux 9 Configuring firewalls and packet filters or Using and configuring firewalld in Red Hat Enterprise Linux 8 Configuring and managing networking.

Verify the full forward and reverse DNS resolution using a fully-qualified domain name to prevent issues while installing Satellite.

For more information, see Changing a hostname using hostnamectl in Red Hat Enterprise Linux 9 Configuring and managing networking.

If your Satellite deployment includes more than 5000 hosts, you can use predefined tuning profiles to improve performance of Satellite.

Note that you cannot use tuning profiles on Capsules.

You can choose one of the profiles depending on the number of hosts your Satellite manages and available hardware resources.

The tuning profiles are available in the /usr/share/foreman-installer/config/foreman.hiera/tuning/sizes directory.

When you run the satellite-installer command with the --tuning option, deployment configuration settings are applied to Satellite in the following order:

Note that the configuration settings that are defined in the /etc/foreman-installer/custom-hiera.yaml file override the configuration settings that are defined in the tuning profiles.

Therefore, before applying a tuning profile, you must compare the configuration settings that are defined in the default tuning profile in /usr/share/foreman-installer/config/foreman.hiera/tuning/common.yaml, the tuning profile that you want to apply and your /etc/foreman-installer/custom-hiera.yaml file, and remove any duplicated configuration from the /etc/foreman-installer/custom-hiera.yaml file.

Satellite installation in an IPv6 network has the following limitations:

Before installing Satellite in an IPv6 network, ensure that you meet the following requirements:

Your network gateway and the HTTP proxy must allow access to the following hosts:

Satellite Server uses SSL to communicate with the Red Hat CDN securely. An SSL interception proxy interferes with this communication. These hosts must be allowlisted on your HTTP proxy.

For a list of IP addresses used by the Red Hat CDN (cdn.redhat.com), see the Knowledgebase article Public CIDR Lists for Red Hat on the Red Hat Customer Portal.

To configure the Subscription Manager with the HTTP proxy, follow the procedure below.

Registering the host to Red Hat Subscription Management enables the host to subscribe to and consume content for any subscriptions available to the user. This includes content such as Red Hat Enterprise Linux and Red Hat Satellite.

Select the operating system and version you are installing on:

By enabling fapolicyd on your Satellite Server, you can provide an additional layer of security by monitoring and controlling access to files and directories. The fapolicyd daemon uses the RPM database as a repository of trusted binaries and scripts.

You can turn on or off the fapolicyd on your Satellite Server or Capsule Server at any point.

Install Satellite Server by using the satellite-installer installation script.

This method is performed by running the installation script with one or more command options. The command options override the corresponding default initial configuration options and are recorded in the Satellite answer file. You can run the script as often as needed to configure any necessary options.

Use the following procedure to import a Red Hat subscription manifest into Satellite Server.

Simple Content Access simplifies the subscription experience for administrators. For more information, see the Subscription Management Administration Guide for Red Hat Enterprise Linux on the Red Hat Customer Portal.

You can now enable repositories and import Red Hat content. For more information, see Importing Content in Managing content.

You can use Red Hat Insights to diagnose systems and downtime related to security exploits, performance degradation and stability failures. You can use the dashboard to quickly identify key risks to stability, security, and performance. You can sort by category, view details of the impact and resolution, and then determine what systems are affected.

Note that you do not require a Red Hat Insights entitlement in your subscription manifest. For more information about Satellite and Red Hat Insights, see Red Hat Insights on Satellite Red Hat Enterprise Linux (RHEL).

To maintain your Satellite Server, and improve your ability to monitor and diagnose problems you might have with Satellite, install Red Hat Insights on Satellite Server and register Satellite Server with Red Hat Insights.

Note that you can change the default schedule for running insights-client by configuring insights-client.timer on Satellite. For more information, see Changing the insights-client schedule in the Client Configuration Guide for Red Hat Insights.

If you decide that you will not use Red Hat Insights, you can unregister Satellite Server from Insights.

The Red Hat Satellite Client 6 repository provides client integration tools, such as katello-host-tools or puppet-agent packages, for hosts registered to Satellite. You must enable the repository, synchronize the repository to your Satellite Server, and enable the repository on your hosts.

By default, remote execution uses push-based SSH as the transport mechanism for the Script provider. If your infrastructure prohibits outgoing connections from Satellite Server to hosts, you can use remote execution with pull-based transport instead, because the host initiates the connection to Satellite Server. The use of pull-based transport is not limited to those infrastructures.

The pull-based transport comprises pull-mqtt mode on Capsules in combination with a pull client running on hosts.

Use this procedure to configure Satellite to provision hosts in an IPv6 network with UEFI HTTP Boot provisioning.

Use the following procedures to configure Satellite with an HTTP proxy.

To perform power management tasks on hosts using the intelligent platform management interface (IPMI) or a similar protocol, you must enable the baseboard management controller (BMC) module on Satellite Server.

You can manage DNS, DHCP, and TFTP centrally within the Satellite environment, or you can manage them independently after disabling their maintenance on Satellite. You can also run DNS, DHCP, and TFTP externally, outside of the Satellite environment.

To send email messages from Satellite Server, you can use either an SMTP server, or the sendmail command.

You can configure an alternate CNAME for Satellite. This might be useful if you want to deploy the Satellite web interface on a different domain name than the one that is used by client systems to connect to Satellite. You must plan the alternate CNAME configuration in advance prior to installing Capsules and registering hosts to Satellite to avoid redeploying new certificates to hosts.

By default, Red Hat Satellite uses a self-signed SSL certificate to enable encrypted communications between Satellite Server, external Capsule Servers, and all hosts. If you cannot use a Satellite self-signed certificate, you can configure Satellite Server to use an SSL certificate signed by an external certificate authority (CA).

When you configure Red Hat Satellite with custom SSL certificates, you must fulfill the following requirements:

To configure your Satellite Server with a custom certificate, complete the following procedures:

Ensure the following parameters in /etc/foreman-installer/scenarios.d/satellite-answers.yaml have no values:

As part of the installation process for Red Hat Satellite, the satellite-installer command installs PostgreSQL databases on the same server as Satellite. In certain Satellite deployments, using external databases instead of the default local databases can help with the server load.

Red Hat does not provide support or tools for external database maintenance. This includes backups, upgrades, and database tuning. You must have your own database administrator to support and maintain external databases.

To create and use external databases for Satellite, you must complete the following procedures:

You can configure Satellite Server with external DNS. Satellite Server uses the nsupdate utility to update DNS records on the remote server.

To make any changes persistent, you must enter the satellite-installer command with the options appropriate for your environment.

To configure Satellite Server with external DHCP, you must complete the following procedures:

You can use Satellite Server to connect to your Infoblox application to create and manage DHCP and DNS records, and to reserve IP addresses.

The supported Infoblox version is NIOS 8.0 or higher.

You can configure Satellite Server with external TFTP services.

When Satellite Server adds a DNS record for a host, it first determines which Capsule is providing DNS for that domain. It then communicates with the Capsule that is configured to provide DNS service for your deployment and adds the record. The hosts are not involved in this process. Therefore, you must install and configure the IdM client on the Satellite or Capsule that is currently configured to provide a DNS service for the domain you want to manage by using the IdM server.

Satellite Server can be configured to use a Red Hat Identity Management (IdM) server to provide DNS service. For more information about Red Hat Identity Management, see the Red Hat Enterprise Linux 7 Linux Domain Identity, Authentication, and Policy Guide.

To configure Satellite Server to use a Red Hat Identity Management (IdM) server to provide DNS service, use one of the following procedures:

To revert to internal DNS service, use the following procedure:

As well as providing access to Satellite Server, hosts provisioned with Satellite can also be integrated with Identity Management realms. Red Hat Satellite has a realm feature that automatically manages the lifecycle of any system registered to a realm or domain provider.

Use this section to configure Satellite Server or Capsule Server for Identity Management realm support, then add hosts to the Identity Management realm group.

To use Identity Management for provisioned hosts, complete the following steps to install and configure Identity Management packages on Satellite Server or Capsule Server:

Complete the following procedure on Satellite and every Capsule that you want to use:

After you configure your integrated or external Capsule with Identity Management, you must create a realm and add the Identity Management-configured Capsule to the realm.

You must update any host groups that you want to use with the new realm information.

Identity Management supports the ability to set up automatic membership rules based on a system’s attributes. Red Hat Satellite’s realm feature provides administrators with the ability to map the Red Hat Satellite host groups to the Identity Management parameter userclass which allow administrators to configure automembership.

When nested host groups are used, they are sent to the Identity Management server as they are displayed in the Red Hat Satellite User Interface. For example, "Parent/Child/Child".

Satellite Server or Capsule Server sends updates to the Identity Management server, however automembership rules are only applied at initial registration.

When a system is added to Satellite Server’s hostgroup_name host group, it is added automatically to the Identity Management server’s "hostgroup_name" host group. Identity Management host groups allow for Host-Based Access Controls (HBAC), sudo policies and other Identity Management functions.

If Ruby module fails to enable, it can mean an incorrect module is enabled. In that case, you have to resolve dependencies manually as follows:

List the enabled modules:

If the Ruby 2.5 module has already been enabled, perform a module reset:

If PostgreSQL module fails to enable, it can mean an incorrect module is enabled. In that case, you have to resolve dependencies manually as follows:

List the enabled modules:

If the PostgreSQL 10 module has already been enabled, perform a module reset:

If you created a PostgreSQL 10 database, perform an upgrade: