[Pacemaker] [Linux-HA] Announce: Hawk (HA Web Konsole)

[Andrew Beekhof]

I look forward to taking this for a spin!
Do we have a bugzilla component for it yet?

On Sat, Jan 16, 2010 at 2:14 PM, Tim Serong <tserong at novell.com> wrote:
> Greetings All,
>
> This is to announce the development of the Hawk project,
> a web-based GUI for Pacemaker HA clusters.
>
> So, why another management tool, given that we already have
> the crm shell, the Python GUI, and DRBD MC?  In order:
>
> 1) We have the usual rationale for a GUI over (or in addition
>   to) a CLI tool; it is (or should be) easier to use, for
>   a wider audience.
>
> 2) The Python GUI is not always easily installable/runnable
>   (think: sysadmins with Windows desktops and/or people who
>   don't want to, or can't, forward X).
>
> 3) Believe it or not, there are a number of cases where,
>   citing security reasons, site policy prohibits ssh access
>   to servers (which is what DRBD MC uses internally).
>
> There are also some differing goals; Hawk is not intended
> to expose absolutely everything.  There will be point somewhere
> where you have to say "and now you must learn to use a shell".
>
> Likewise, Hawk is not intended to install the base cluster
> stack for you (whereas DRBD MC does a good job of this).
>
> It's early days yet (no downloadable packages), but you can
> get the current source as follows:
>
>  # hg clone http://hg.clusterlabs.org/pacemaker/hawk
>  # cd hawk
>  # hg update tip
>
> This will give you a web-based GUI with a display roughly
> analagous to crm_mon, in terms of status of cluster resources.
> It will show you running/dead/standby nodes, and the resources
> (clones, groups & primitives) running on those nodes.
>
> It does not yet provide information about failed resources or
> nodes, other than the fact that they are not running.
>
> Display of nodes & resources is collapsible (collapsed by
> default), but if something breaks while you are looking at it,
> the display will expand to show the broken nodes and/or
> resources.
>
> Hawk is intended to run on each node in your cluster.  You
> can then access it by pointing your web browser at the IP
> address of any cluster node, or the address of any IPaddr(2)
> resource you may have configured.
>
> Minimally, to see it in action, you will need the following
> packages and their dependencies (names per openSUSE/SLES):
>
>  - ruby
>  - rubygem-rails-2_3
>  - rubygem-gettext_rails
>
> Once you've got those installed, run the following command:
>
>  # hawk/script/server
>
> Then, point your browser at http://your-server:3000/ to see
> the status of your cluster.
>
> Ultimately, hawk is intended to be installed and run as a
> regular system service via /etc/init.d/hawk.  To do this,
> you will need the following additional packages:
>
>  - lighttpd
>  - lighttpd-mod_magnet
>  - ruby-fcgi
>  - rubygem-rake
>
> Then, try the following, but READ THE MAKEFILE FIRST!
> "make install" (and the rest of the build system for that
> matter) is frightfully primitive at the moment:
>
>  # make
>  # sudo make install
>  # /etc/init.d/hawk start
>
> Then, point your browser at http://your-server:4444/ to see
> the status of your cluster.
>
> Assuming you've read this far, what next?
>
> - In the very near future (but probably not next week,
>  because I'll be busy at linux.conf.au) you can expect to
>  see further documentation and roadmap info up on the
>  clusterlabs.org wiki.
>
> - Immediate goal is to obtain feature parity with crm_mon
>  (completing status display, adding error/failure messages).
>
> - Various pieces of scaffolding need to be put in place (login
>  page, access via HTTPS, clean up build/packaging, theming,
>  etc.)
>
> - After status display, the following major areas of
>  funcionality are:
>  - Basic operator tasks (stop/start/migrate resource,
>    standby/online node, etc.)
>  - Explore failure scenarios (shadow CIB magic to see
>    what would happen if a node/resource failed).
>  - Ability to actually configure resources and nodes.
>
> Please direct comments, feedback, questions, etc. to
> tserong at novell.com and/or the Pacemaker mailing list.
>
> Thank you for your attention.
>
> Regards,
>
> Tim
>
>
> --
> Tim Serong <tserong at novell.com>
> Senior Clustering Engineer, Novell Inc.
>
>
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