1 mon-collector(7) Ganeti | Version @GANETI_VERSION@
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7 mon-collector - Command line interface for the data collectors of the
13 **mon-collector** {collector}
18 ``mon-collector`` is a suite of tools designed to provide a command line
19 interface to the data collectors implemented by the ganeti monitoring system.
20 ``mon-collector`` is also the generic binary that must be invoked specifying,
21 as the first command line parameter, the name of the actual desired data
24 When executed, ``mon-collector`` will run the specified collector and will
25 print its output to stdout, in JSON format.
33 | diskstats [ [ **-f** | **\--file** ] = *input-file* ]
35 Collects the information about the status of the disks of the system, as listed
36 by /proc/diskstats, or by an alternate file with the same syntax specified on
39 The options that can be passed to the DRBD collector are as follows:
41 -f *input-file*, \--file=*input-file*
42 Where to read the data from. Default if not specified: /proc/diskstats
47 | drbd [ [ **-s** | **\--drbd-status** ] = *status-file* ] [ [ **-p** |
48 **\--drbd-pairing**] = *pairing-file* ]
50 Collects the information about the version and status of the DRBD kernel
51 module, and of the disks it is managing.
53 If *status-file* and *pairing-file* are specified, the status and the
54 instance-minor paring information will be read from those files.
55 Otherwise, the collector will read them, respectively, from /proc/drbd
56 and from the Confd server.
58 The options that can be passed to the DRBD collector are as follows:
60 -s *status-file*, \--drbd-status=*status-file*
61 Read the DRBD status from the specified file instead of /proc/drbd.
63 -p *pairing-file*, \--drbd-pairing=*pairing-file*
64 Read the information about the pairing between instances and DRBD minors
65 from the specified file instead of asking the Confd servers for them.
70 | inst-status-xen [ [ **-a** | **\--address** ] = *ip-address* ] [ [ **-p** |
71 **\--port** ] = *port-number* ]
73 Collects the information about the status of the instances of the current node.
74 In order to perform this task, it needs to connect to the ConfD daemon to fetch
75 some configuration information. The following parameters allow the user to
76 specify the position where the daemon is listening, in case it's not the default
79 -a *ip-address*, \--address=*ip-address*
80 The IP address the ConfD daemon is listening on.
82 -p *port-number*, \--port=*port-number*
83 The port the ConfD deamon is listening on.
88 | lv [ [ **-a** | **\--address** ] = *ip-address* ] [ [ **-p** | **\--port** ]
89 = *port-number* ] [ [ **-f** | **\--file** ] = *input-file* ]
90 [ [ **-i** | **\--instances** ] = *instances-file* ]
92 Collects the information about the logical volumes of the current node.
94 In order to perform this task, it needs to interact with the ``lvs`` command
95 line tool and to connect to the ConfD daemon to fetch some configuration
96 information. The following parameters allow the user to specify the position
97 where the daemon is listening, in case it's not the default one:
99 -a *ip-address*, \--address=*ip-address*
100 The IP address the ConfD daemon is listening on.
102 -p *port-number*, \--port=*port-number*
103 The port the ConfD deamon is listening on.
105 Instead of accessing the live data on the cluster, the tool can also read data
106 serialized on files (mainly for testing purposes). Namely:
108 -f *input-file*, \--file *input-file*
109 The name of the file containing a recorded output of the ``lvs`` tool.
111 -i *instances-file*, \--instances=*instances-file*
112 The name of the file containing a JSON serialization of instances the
113 current node is primary and secondary for, listed as::
115 ([Instance], [Instance])
117 where the first list contains the instances the node is primary for, the
118 second list those the node is secondary for.