sammcj/request_pacemaker_glue.md

## request_pacemaker_glue.md

      
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              request_pacemaker_glue.md
            
          
    RHEL/CentOS/Fedora 7 Pacemaker Package was built without 'legacy' plugin support

'Legacy' pacemaker plugins provide useful, well tested resource providers for linux high availability / the open cluster framework (OCF), most of them are still very widely used / relied upon and are a potentially blocker for people wanting to build modern linux clusters based on RHEL/CentOS 7 and beyond.
In a perfect world RHEL/Fedora would simply build the pacemaker package with the --with stonithd flag and reinstate the cluster-glue package that was present in 6, However I know how hard it is to get those kind of changes made after a release (and probably for good reason).

There is only one difference when building the pacemaker package that enables this that requires no additional packages or code.
There are three parts to this request - they are neither complex or fraught with dependency nightmares.


Provide the package pacemaker with legacy-plugins enabled when the RPM is generated.
Provide the cluster-glue & cluster-glue-libs packages that are missing from RHEL/CentOS 7 but is still widely used. (Also included in the latest OpenSUSE distributions.)
Provide the crmsh package that is missing in RHEL/CentOS 7 but is widely used by many tools to manage linux HA clusters.


Here is the link to the official pacemaker RPM spec with the --with stonithd option.

If it helps at all I am happy to provide the packages I have built / picked and we have deployed very successfully with CentOS 7.

Required Steps


Ensuring pacemaker is built with legacy-plugin support simply requires building the pacemaker package with --with stonithd:

rpmbuild -ba --with stonithd pacemaker.spec


I've also mirrored all the pacemaker packages built --with stonithd to my RPM repo here


Add the cluster-glue and cluster-glue-libs packages to the repo.


It's available from OpenSUSE and works with CentOS 7 (Which is what we're currently doing).
Version 1.0.12 or greater is required rpmfind search rpmfind package
I've also mirrored these to my RPM repo here


Add the crmsh package to the repo:


It's available from OpenSUSE and works with CentOS 7 (Which is what we're currently doing).
Version 2.1 or greater is required rpmfind search rpmfind package


Example packages I am hosting on packagecloud

root@pm-san6:~ # yum info pacemaker
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Installed Packages
Name : pacemaker
Arch : x86_64
Version : 1.1.12
Release : 23.el7.centos.1
Size : 1.2 M
Repo : installed
From repo : mrmondo_pacemaker
Summary : Scalable High-Availability cluster resource manager
URL : http://www.clusterlabs.org
License : GPLv2+ and LGPLv2+
Description : Pacemaker is an advanced, scalable High-Availability cluster resource
            : manager for Corosync, CMAN and/or Linux-HA.
            :
            : It supports more than 16 node clusters with significant capabilities
            : for managing resources and dependencies.
            :
            : It will run scripts at initialization, when machines go up or down,
            : when related resources fail and can be configured to periodically check
            : resource health.
            :
            : Available rpmbuild rebuild options:
            : --with(out) : cman stonithd doc coverage profiling pre_release upstart_job

root@pm-san6:~ # yum info cluster-glue
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Installed Packages
Name : cluster-glue
Arch : x86_64
Version : 1.0.12
Release : 1.16.1
Size : 887 k
Repo : installed
From repo : mrmondo_pacemaker
Summary : Reusable cluster components
URL : http://www.linux-ha.org/wiki/Cluster_Glue
License : GPL-2.0+ and LGPL-2.1+
Description : A collection of common tools that are useful for writing cluster managers
            : such as Pacemaker.
            : Provides a local resource manager that understands the OCF and LSB
            : standards, and an interface to common STONITH devices.

root@pm-san6:~ # yum info crmsh
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Installed Packages
Name : crmsh
Arch : x86_64
Version : 2.1.4
Release : 1.1
Size : 2.2 M
Repo : installed
From repo : mrmondo_pacemaker
Summary : High Availability cluster command-line interface
URL : http://crmsh.github.io
License : GPL-2.0+
Description : The crm shell is a command-line interface for High-Availability
            : cluster management on GNU/Linux systems. It simplifies the
            : configuration, management and troubleshooting of Pacemaker-based
            : clusters, by providing a powerful and intuitive set of features.
            :
            : Authors: Dejan Muhamedagic <dejan@suse.de> and many others