[Linux-HA] [Pacemaker] DRBD MC 0.8.0 / Pacemaker GUI

Dan Frincu dfrincu at streamwide.ro
Sat Oct 2 06:38:31 MDT 2010


Where can I post a bug related to DRBD MC 0.8.0?



Rasto Levrinc wrote:
> Hi,
> This is the next DRBD MC beta release 0.8.0. DRBD MC is a Java application
> that helps to configure DRBD, Pacemaker or both. It uses SSH to connect to
> the cluster from a desktop computer.
> Some people have doubts if Java is the right technology for GUI and ask
> why it isn't done in [insert the newest subset-of-Perl language here].
> IMHO it's the same if someone would diss COBOL in 1973, I rest my case. :)
> If you are a CLI kind of person you probably don't need it, if you like
> BNF notations, syntax errors and people screaming at you - man this, man
> that, if you are into this stuff, there's nothing wrong with it, you don't
> need it. But this is a GUI world and lately people including me don't even
> get a decent keyboard at their workplace, there's no way around it, you
> are going to need this GUI.
> In this release the VM part of the GUI was developed and reached almost
> the feature parity with virt-manager. Unlike virt-manager it is
> cluster-aware and it can be run from Windows, yet it still can be run from
> Linux so don't run away. Screenshot:
> http://oss.linbit.com/drbd-mc/img/drbd-mc-0.8.0.png
> Seemingly faster popups were implemented as well. Especially they seem
> much faster with large groups on slow computers. The trick is, that first
> they pop up and then they load in the background and it feels faster, some
> people do this as well.
> You can get DRBD MC here:
> http://www.drbd.org/mc/management-console/
> http://oss.linbit.com/drbd-mc/DMC-0.8.0.jar
> http://oss.linbit.com/drbd-mc/drbd-mc-0.8.0.tar.gz
> You can download it and start it with "java -jar DMC-0.8.0.jar" command or
> you can use Java Webstart. First of all, please don't run it on one node
> with X forwarding, but on the desktop.
> It works with SUN Java 6 and OpenJDK 7. It does not work good with OpenJDK
> 1.6 and this is probably what you have if you have OpenJDK installed as
> Java. With this so-called fully compatible Java version it runs slow,
> experiences random errors or may even hang.
> DRBD MC is compatible with Heartbeat 2.1.3 to the Pacemaker 1.1.2 with
> Corosync or Heartbeat and DRBD 8.
> Here are the most important changes:
> * fix DRBD with filesystem in a group
> * rename "Cluster" to "Cluster Manager" in menu
> * enable DRBD menus in unmanaged resources and advanced mode
> * dialog fixes
> * new domain wizard implementation
> * better popup menus
> * fix possible null pointer exception, while removing vertices
> * fix possible race with radio groups
> * fixing a leak while there is no ssh connection
> * using epel 5.4 for redhat/centos distributions
> * test-suite for VMs
> * test-suite for DRBD
> * fix menu tree not updating for orphaned resources
> * split tooltips that are too wide
> * add "stop all services" menu item
> * show in tooltip why a menu item was disabled
> * implement all VM devices
> Rasto Levrinc

Systems Engineer
Streamwide Romania

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