Provided by: ganeti-2.16_2.16.0~rc2-1build1_all 
NAME
mon-collector - Command line interface for the data collectors of the monitoring system
SYNOPSIS
mon-collector {collector}
DESCRIPTION
mon-collector is a suite of tools designed to provide a command line interface to the data collectors im‐
plemented by the ganeti monitoring system. mon-collector is also the generic binary that must be invoked
specifying, as the first command line parameter, the name of the actual desired data collector to be run.
When executed, mon-collector will run the specified collector and will print its output to stdout, in
JSON format.
COLLECTORS
DISKSTATS
diskstats [ [ -f | --file ] = input-file ]
Collects the information about the status of the disks of the system, as listed by /proc/diskstats, or by
an alternate file with the same syntax specified on the command line.
The options that can be passed to the DRBD collector are as follows:
-f input-file, --file=*input-file*
Where to read the data from. Default if not specified: /proc/diskstats
DRBD
drbd [ [ -s | --drbd-status ] = status-file ] [ [ -p | --drbd-pairing] = pairing-file ]
Collects the information about the version and status of the DRBD kernel module, and of the disks it is
managing.
If status-file and pairing-file are specified, the status and the instance-minor paring information will
be read from those files. Otherwise, the collector will read them, respectively, from /proc/drbd and
from the Confd server.
The options that can be passed to the DRBD collector are as follows:
-s status-file, --drbd-status=*status-file*
Read the DRBD status from the specified file instead of /proc/drbd.
-p pairing-file, --drbd-pairing=*pairing-file*
Read the information about the pairing between instances and DRBD minors from the specified file
instead of asking the Confd servers for them.
INSTANCE STATUS
inst-status-xen [ [ -a | --address ] = ip-address ] [ [ -p | --port ] = port-number ]
Collects the information about the status of the instances of the current node. In order to perform this
task, it needs to connect to the ConfD daemon to fetch some configuration information. The following pa‐
rameters allow the user to specify the position where the daemon is listening, in case it's not the de‐
fault one:
-a ip-address, --address=*ip-address*
The IP address the ConfD daemon is listening on.
-p port-number, --port=*port-number*
The port the ConfD daemon is listening on.
LOGICAL VOLUMES
lv [ [ -a | --address ] = ip-address ] [ [ -p | --port ] = port-number ] [ [ -f | --file ] = input-file ]
[ [ -i | --instances ] = instances-file ]
Collects the information about the logical volumes of the current node.
In order to perform this task, it needs to interact with the lvs command line tool and to connect to the
ConfD daemon to fetch some configuration information. The following parameters allow the user to specify
the position where the daemon is listening, in case it's not the default one:
-a ip-address, --address=*ip-address*
The IP address the ConfD daemon is listening on.
-p port-number, --port=*port-number*
The port the ConfD daemon is listening on.
Instead of accessing the live data on the cluster, the tool can also read data serialized on files (main‐
ly for testing purposes). Namely:
-f input-file, --file input-file
The name of the file containing a recorded output of the lvs tool.
-i instances-file, --instances=*instances-file*
The name of the file containing a JSON serialization of instances the current node is primary and
secondary for, listed as:
([Instance], [Instance])
where the first list contains the instances the node is primary for, the second list those the
node is secondary for.
REPORTING BUGS
Report bugs to project website (http://code.google.com/p/ganeti/) or contact the developers using the
Ganeti mailing list (ganeti@googlegroups.com).
SEE ALSO
Ganeti overview and specifications: ganeti(7) (general overview), ganeti-os-interface(7) (guest OS defin‐
itions), ganeti-extstorage-interface(7) (external storage providers).
Ganeti commands: gnt-cluster(8) (cluster-wide commands), gnt-job(8) (job-related commands), gnt-node(8)
(node-related commands), gnt-instance(8) (instance commands), gnt-os(8) (guest OS commands), gnt-stor‐
age(8) (storage commands), gnt-group(8) (node group commands), gnt-backup(8) (instance import/export com‐
mands), gnt-debug(8) (debug commands).
Ganeti daemons: ganeti-watcher(8) (automatic instance restarter), ganeti-cleaner(8) (job queue cleaner),
ganeti-noded(8) (node daemon), ganeti-rapi(8) (remote API daemon).
Ganeti htools: htools(1) (generic binary), hbal(1) (cluster balancer), hspace(1) (capacity calculation),
hail(1) (IAllocator plugin), hscan(1) (data gatherer from remote clusters), hinfo(1) (cluster information
printer), mon-collector(7) (data collectors interface).
COPYRIGHT
Copyright (C) 2006-2015 Google Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided
that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and
the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
the following disclaimer in the documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMIT‐
ED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUP‐
TION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (IN‐
CLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.
Ganeti mon-collector(7)