clubak - format output from clush/pdsh-like output and more
clubak formats text from standard input containing lines of
the form "node:output". It is fully backward compatible
with dshbak(1) but provides additional features. For instance,
clubak always displays its results sorted by node/nodeset.
You do not need to use clubak when using clush(1) as
all output formatting features are already included in. It is provided for
other usages, like post-processing results of the form
"node:output".
Like clush(1), clubak uses the
ClusterShell.MsgTree module of the ClusterShell library (see pydoc
ClusterShell.MsgTree).
clubak should be started with connected standard input.
- --version
- show clubak version number and exit
- -b, -c
- gather nodes with same output (-c is provided for dshbak(1)
compatibility)
- -d,
--debug
- output more messages for debugging purpose
- -L
- disable header block and order output by nodes
- -r,
--regroup
- fold nodeset using node groups
- -s GROUPSOURCE, --groupsource=GROUPSOURCE
- optional groups.conf(5) group source to use
- --groupsconf=FILE
- use alternate config file for groups.conf(5)
- -G,
--groupbase
- do not display group source prefix (always @groupname)
- -S SEPARATOR, --separator=SEPARATOR
- node / line content separator string (default: :)
- -F,
--fast
- faster but memory hungry mode (preload all messages per node)
- -T,
--tree
- message tree trace mode; switch to enable ClusterShell.MsgTree
trace mode, all keys/nodes being kept for each message element of the
tree, thus allowing special output gathering
- --color=WHENCOLOR
- clush can use NO_COLOR, CLICOLOR and CLICOLOR_FORCE environment
variables. --color command line option always takes precedence over
environment variables. NO_COLOR takes precedence over CLICOLOR_FORCE which
takes precedence over CLICOLOR. --color tells whether to use ANSI
colors to surround node or nodeset prefix/header with escape sequences to
display them in color on the terminal. WHENCOLOR is never,
always or auto (which use color if standard output refers to
a terminal). Color is set to [34m (blue foreground text) and cannot be
modified.
- --diff
- show diff between gathered outputs
An exit status of zero indicates success of the clubak
command.
- 1.
- clubak can be used to gather some recorded clush(1)
results:
- 2.
- Another example, iterate over node* text files in current directory
and gather characters count for all of them:
# find -name "node*" -exec wc -c {} ; | awk '{ gsub("./","",$2); print $2": "$1 }' | clubak -bL
node[1,3]: 7
node2: 9
cluset(1), clush(1), nodeset(1),
groups.conf(5).
http://clustershell.readthedocs.org/
Stephane Thiell <sthiell@stanford.edu>
GNU Lesser General Public License version 2.1 or later
(LGPLv2.1+)