1PMFIND(1) General Commands Manual PMFIND(1)
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6 pmfind - find PCP services on the network
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9 pmfind [-q] [-m mechanism] [-s service] [-r] [-t timeout]
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12 pmfind searches for instances of the specified PCP service being adver‐
13 tised on the network and prints a list of URLs corresponding to the
14 services discovered.
15 By default pmfind will search for all supported PCP services, however a
17 specific PCP service to discover can be specified using the -s option.
18 Supported services are pmcd(1), pmproxy(1) and pmwebd(1).
19 The -m option sets the mechanism that pmfind uses when performing ser‐
21 vice discovery. By default, or if the keyword "all" is specified,
22 every available mechanism will be used (iteratively). Supported mecha‐
23 nisms are:
24 avahi Searches for services which are broadcasting using mDNS via
26 avahi-daemon(8). An optional suffix ",timeout=N" may be added
27 to limit the amount of time waiting for the avahi-daemon. N is a
28 floating point number specifying the number of seconds to wait.
29 The default is 0.5 seconds. This timeout may also be specified
30 by setting the environment variable AVAHI_DISCOVERY_TIMEOUT to
31 the desired number of seconds. If both are specified, then the
32 value specified in the environment variable takes precedence.
33 probe=<net-address>/<mask-bits>
35 Actively probes the given subnet for the requested PCP ser‐
36 vice(s). <net-address> is an inet or ipv6 network address and
37 <mask-bits> is the number of bits used to define the subnet. For
38 example, 192.168.1.0/24 defines an 8 bit subnet consisting of
39 the addresses 192.168.1.0 through 192.168.1.255. An optional
40 suffix ",maxThreads=N" may be added to limit the number of
41 threads used while probing. The default is the value of FD_SET‐
42 SIZE or the number of addresses in the subnet, whichever is
43 less. An optional suffix ",timeout=N" may be added to limit the
44 amount of time waiting for each connection attempt. N is a
45 floating point number specifying the number of seconds to wait.
46 The default is 20ms.
47 The -r option requests that DNS name resolution be attempted for the
49 addresses of any discovered services. The default is to display the
50 network addresses of any discovered services.
51 The -t option sets the maximum amount of time that pmfind will take
53 before interrupting the service discovery. The argument is a floating
54 point number representing the number of seconds before timing out. The
55 default is to take as much time as is needed to complete the process.
56 The -q option suppresses all output on the standard output stream.
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60 Environment variables with the prefix PCP_ are used to parameterize the
61 file and directory names used by PCP. On each installation, the file
62 /etc/pcp.conf contains the local values for these variables. The
63 $PCP_CONF variable may be used to specify an alternative configuration
64 file, as described in pcp.conf(5).
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67 The value of the exit status from the command is zero when services
68 were successfully located, one if no services were found, and two if an
69 error occurred.
70 In the event of an error, a message will be generated on standard error
72 that is intended to be self-explanatory.
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75 pmfind will interrupt the service discovery process when one of the
76 following signals is received: SIGHUP, SIGPIPE, SIGINT, SIGTERM,
77 SIGXFSZ, SIGXCPU. pmfind will report any results which were discovered
78 up to point of the interruption.
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81 PCPIntro(1), pmcd(1), pmproxy(1), pmwebd(1), PMAPI(3), pmDiscoverSer‐
82 vices(3), pcp.conf(5) and pcp.env(5).
83Performance Co-Pilot PCP PMFIND(1)