Matahari
Summary
Matahari is a collection of generically useful APIs accessible over a remote and local interfaces via a collection of Agents, and a framework for adding small set of Agents & APIs. Matahari is a Red Hat community project.
Owner
- Name: Jaroslav Reznik, Andrew Beekhof and the Matahari team
- Email: jreznik@redhat.com, andrew@beekhof.net and matahari@lists.fedorahosted.org
Current status
- Targeted release: Fedora 16
- Last updated: 2011-07-07
- Percentage of completion: 25%
Detailed Description
The plan is to ship stable and easily deployable Matahari for Fedora users.
The minimal set of implemented agents in Fedora 16 timeframe is:
- Host - an agent for viewing and controlling hosts with Power Management capability via tuned
- Networking - an agent for viewing and controlling network devices
- Services - an agent for viewing and controlling system services
- more agents will come soon (Logging, Generic configuration agent, etc.)
With two different transport layers - powerful QMF bus for remote access and DBus as a standard and well known local systems bus.
The aim of this feature is to make Fedora prominent consumer and showcase of Matahari - for both users/admins and developers.
Upstream website: http://matahariproject.org/
Benefit to Fedora
- easy deployment of Fedora to clouds and cluster environments
- local and remote management of Fedora systems
- well defined interfaces to Fedora system for admins (scripiting, maintanance) and for 3rd party Matahari client developers
- Fedora as a development platform for Matahari upstream
- the core for future system configuration tools (replacement of s-c-*)
Scope
Currently Matahari scope is isolated as we're now working mostly on the bottom layer - agents/interfaces side.
How To Test
-
Install Matahari agent
# yum install matahari\*Start Matahari broker
# systemctl start matahari-broker.serviceStart Matahari agent
# systemctl start matahari-<agent>.serviceTest D-Bus interface
For example get hostname from the Host agent
$ dbus-send --system --dest=org.matahariproject.Host --print-reply /org/matahariproject/Host org.freedesktop.DBus.Properties.Get string:org.matahariproject.Host string:hostname
Result should contain your hostname
method return sender=:1.73 -> dest=:1.85 reply_serial=2 variant string "localhost.localdomain"Test QMF interface
$ qmf-tool localhost:49000 qmf: list agents
QMF Agents: Id Vendor Product Instance Epoch ================================================================================== * 1 apache.org qpidd 971e8d8b-38f8-45ad-9ccf-f82ea85e3ed7 4 2 matahariproject.org host d0175049-b186-41a7-a10b-11589107c20a 4 3 matahariproject.org net 97e02c72-8ac4-4fd5-901b-77574af3d45c 2 4 matahariproject.org service bbf07d98-be32-4046-bf7b-c1d162b0611d 2
To verify the agents actually work we'll do some interactions with one.
qmf: set default 2
Default Agent: matahariproject.org:host:d0175049-b186-41a7-a10b-11589107c20a
qmf: query Host org.matahariproject
Data Objects Returned: 1:
Number Data Address
==============================================
1 26205118-e589-44ca-969d-d79b8ae40b2a
qmf: show 1
Properties:
Name Value
=====================================================
load {'1': 0.1, '5': 0.22, '15': 0.23}
hostname localhost.localdomain
...
You should see properties with correct values for your system.
More detailed informations How To Test Matahari can be found in the Matahari Test Plan. We are interested in a general community testing of currently available agents and core Matahari - for both local (DBus) and remote sides (QMF). We do not offer any special instruction for testing, just try to use Matahari for your tasks and report possible issues/enhancements.
User Experience
Users can use well defined interface for system configuration and management over Dbus and QMF - to manage their systems locally and remotely - using Matahari agents. This feature allows developers to develop more Matahari agents, make the system more powerful and to develop system configuration tools on top of this core Matahari technology.
Dependencies
The dependencies are Qpid with QMFv2 (Qpid Management Framework), DBus and Sigar library. Optional matahari-broker requires Qpid broker daemon.
Contingency Plan
As no packages in Fedora currently depends on Matahari we will continue with the development efforts in Rawhide.