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ClusterLabs
129 Stars 46 Forks GNU General Public License v2.0 3.1K Commits 7 Opened issues

Description

A web-based GUI for managing and monitoring the Pacemaker High-Availability cluster resource manager

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HA Web Konsole (Hawk)

Build Status Code Climate Documentation

Hawk provides a web interface for High Availability clusters managed by the Pacemaker cluster resource manager. The current goal of the project is to provide a complete management interface to the HA cluster, both in the form of a flexible REST API as well as a modern client frontend using the API.

http://hawk-ui.github.io

Build Dependencies

The exact versions specified here may not be accurate. Also, note that Hawk also requires the rubygems listed in

hawk/Gemfile
.
  • ruby >= 2.2
  • crmsh >= 3.0.0
  • hawk-apiserver
  • graphviz
  • graphviz-gd
  • dejavu
  • pacemaker >= 1.1.8
  • bundler
  • iproute2

For details about the Hawk API server, see the separate repository at Github:

  • https://github.com/ClusterLabs/hawk-apiserver

Installation and deployment:

On openSUSE use following commands:

zypper install hawk2
crm cluster init

Once initialized, go to

https://:7630/
.

Deploy:

use the following project for deploying hawk https://github.com/SUSE/pacemaker-deploy

Devel

Puma server configuration

You can change the configurations of both instances of the Puma sever through the configuration file in

hawk/config/puma.rb
. You can also pass options directly through environment variables.

Please also note that the Puma server is configured to use a maximum number of 16 threads withing one worker in clustered mode. This application is thread safe and you can customize this through the puma.rb file.

For further information about threads and workers in Puma, please take a look at this great article by Heroku: Puma web server article

Hacking hawk tools

Hawk's tools are the programs under the

hawk/tools
folder (
hawk_chkpwd
and
hawk_invoke
).
ls /usr/sbin/hawk_* -l+ +
-rwsr-x--- 1 root haclient 9884 2011-04-14 22:56 /usr/sbin/hawk_chkpwd+
-rwsr-x--- 1 root haclient 9928 2011-04-14 22:56 /usr/sbin/hawk_invoke+

hawk_chkpwd
is almost identical to
unix2_chkpwd
, except it restricts acccess to users in the
haclient
group, and doesn't inject any delay when invoked by the
hacluster
user (which is the user the Hawk web server instance runs as).

hawk_invoke
allows the
hacluster
user to run a small assortment of Pacemaker CLI tools as another user in order to support Pacemaker's ACL feature. It is used by Hawk when performing various management tasks.

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