Website www.redhat.com/en/technologies/management/satellite | ||
In computing, Red Hat Satellite is a systems-management product by the company Red Hat which allows system administrators to deploy and manage Red Hat Enterprise Linux (RHEL) hosts.
Contents
- Red Hat Satellite Server
- Capsule Servers
- Managed Client Systems
- Connection to Red Hat Customer Portal and External Content Sources
- Provision
- Manage
- Monitor
- History
- Red Hat Satellite 5
- References
A Satellite server registers with Red Hat Subscription Management, mirrors all relevant software like security errata and bug fixes, and provides this together with locally added software and configuration to the attached servers.
The managed hosts register against the local Satellite server and access the provided resources like software packages, patches, configuration, etc. while they also provide information about the current health state of the server to the Satellite
As of February 2017:
Red Hat Satellite Server
The Red Hat Satellite Server enables planning and management of the content life cycle and the configuration of Capsule Servers and hosts through GUI, CLI (Hammer), or API (RESTful API).
Capsule Servers
Capsule Servers mirror content from the Satellite Server to establish content sources in different geographical locations, they are analogous to the Red Hat Satellite 5 Proxy Server
Managed Client Systems
As well as Supported Managed Hosts Red Hat Satellite 6 also has some deployment and management capability on certain other hosts though Red Hat Support for these will be limited
Connection to Red Hat Customer Portal and External Content Sources
Satellite generally operates in "connected" mode, registering directly with the RHN and downloading relevant software into Satellite's software channels. The organisation's hosts then register against the local Satellite server, instead of directly against Red Hat Network.
For secure deployments, Satellite can operate in a "Disconnected" mode, where updates are downloaded directly from Red Hat via an Internet connected machine and then uploaded into Satellite or a local offline RHN proxy.
Both modes allow the organisation to control which versions of software it makes available for its hosts, as well as making additional software available within the local network.
Provision
Satellite offers numerous methods for deploying hosts, including simple kickstart, bare metal install and re-imaging. Current versions of Satellite support kickstart using Cobbler as an underlying framework. PXE Boot, and Koan are methods that can be used to implement bare metal installs and re-imaging of hosts.
Manage
Satellite assists in remotely managing hosts in several areas: software, operational management, and configuration. The 3 main mechanisms for managing hosts are:
Monitor
Satellite can provide monitoring of software and systems via probes. These probes periodically explore the target host and send alerts if the probes do not get the correct replies, or if the replies fall outside of some specified range.
History
A primary purpose of earlier versions of Satellite was to allow organizations to utilize the benefits of Red Hat Network (RHN) without having to provide public Internet access to their servers or other client systems. Later version of the tool have developed increased functionality.
Red Hat Satellite 5
For Red Hat Satellite version 5 the Satellite Application was implemented by a toolset named Project Spacewalk.
Red Hat announced in June 2008 Project Spacewalk was to be made open source under the GPLv2 License
Satellite 5.3 was the first version to be based on upstream Spacewalk code.
In the Spacewalk FAQ issued in 2015 after the release of Red Hat Satellite 6 Red Hat
As of 2017 Red Hat Satellite 5 is in long-term support mode with a current EOL date of January 31, 2020.