README.modules

This file describes the current list of modules distributed with
pdsh. Pdsh modules come in two flavors at this time: rcmd and
miscellaneous. The rcmd modules provide remote command functionality
for pdsh, while the "misc" modules extend the functionality of
pdsh in some other way -- by providing new options to pdsh or
modifying the pdsh working collective, for example.

Multiple rcmd modules may be installed at once and are chosen
at runtime by either the '-R type' option to pdsh, or by setting
the environment variable PDSH_RCMD_TYPE.

When pdsh initializes it reads all available modules from the
`pkglibdir' (typically /usr/lib/pdsh or /usr/local/lib/pdsh). If
conflicting modules are installed, they are loaded on a first-come
first-serve basis (i.e. the first module loaded wins). Modules
may be force-initialized by specifying them to the '-M' pdsh/pdcp
option, or via the PDSH_MISC_MODULES environment variable.


PDSH MODULES:
=============

Module:      rcmd/rsh
Package:     pdsh-rcmd-rsh
Description: BSD rcmd(3) connect method for pdsh.
Conflicts:   None
Requires:    rshd server running on remote nodes

Module:      rcmd/ssh
Package:     pdsh-rmcd-ssh
Description: SSH rcmd connect method for pdsh. 
Conflicts:   None
Requires:    ssh installed, sshd on remote nodes

Module:      rcmd/mrsh
Package:     pdsh-rcmd-mrsh
Description: Rcmd connect method using Munge authentication.
Conflicts:   None
Requires:    munge 

Module:      rcmd/xcpu
Package:     pdsh-rcmd-xcpu
Description: Rcmd connect method using XCPU
Conflicts:   None
Requires:    XCPU service mounted on /mnt/xcpu/<hostname>/xcpu

Module:      misc/genders
Package:     pdsh-mod-genders
Description: Provides -a,-i,-g node selection options using libgenders.
Conflicts:   misc/machines, misc/dshgroup, misc/netgroup
Requires:    libgenders

Module:      misc/nodeupdown
Package:     pdsh-mod-nodeupdown
Description: Provides -v option using nodeupdown library
Conflicts:   None
Requires:    libnodeupdown

Module:      misc/machines
Package:     pdsh-mod-machines
Description: Provides -a option using a flat-file list of hosts
Conflicts:   misc/genders, misc/nodeattr

Module:      misc/slurm
Package:     pdsh-mod-slurm
Description: Allows list of targets to be built off SLURM_JOBID or `-j jobid'
Conflictls:  None
Requires:    slurm

Module:      misc/dshgroup
Package:     pdsh-mod-dshgroup
Description: Allows list of targets to be built from dsh-style "group" files.
Conflicts:   misc/genders, misc/netgroup, misc/nodeattr

Module:      misc/netgroup
Package:     pdsh-mod-netgroup
Description: Allows list of targets to be build from netgroups.
Conflicts:   misc/genders, misc/dshgroup, misc/nodeattr