pmnsdel(1)

1PMNSDEL(1)                  General Commands Manual                 PMNSDEL(1)
2
3
4

NAME

6       pmnsdel - delete a subtree of names from the Performance Co-Pilot PMNS
7

SYNOPSIS

9       $PCP_BINADM_DIR/pmnsdel [-?]  [-n namespace] metricpath [...]
10

DESCRIPTION

12       pmnsdel removes subtrees of names from a Performance Metrics Name Space
13       (PMNS), as used by the components of the Performance Co-Pilot (PCP).
14
15       Normally pmnsdel operates on the default Performance Metrics Name Space
16       (PMNS),  however if the -n option is specified an alternative namespace
17       is used from the file namespace.
18
19       The default PMNS is found in the file $PCP_VAR_DIR/pmns/root unless the
20       environment  variable  PMNS_DEFAULT  is set, in which case the value is
21       assumed to be the pathname to the file containing the default PMNS.
22
23       The metric names to be deleted are all those for which one of the  met‐
24       ricpath arguments is a prefix in the PMNS, see PMNS(5).
25
26       All of the files defining the PMNS must be located within the directory
27       that contains the root  of  the  PMNS,  and  this  would  typically  be
28       $PCP_VAR_DIR/pmns  for the default PMNS, and this would typically imply
29       running pmnsdel as root.
30
31       Provided some initial integrity  checks  are  satisfied,  pmnsdel  will
32       update  the  necessary  PMNS files.  Should an error be encountered the
33       original namespace is restored.  Note that any PMNS files that  are  no
34       longer  referenced  by the modified namespace will not be removed, even
35       though their contents are not part of the new namespace.
36

OPTIONS

38       The available command line options are:
39
40       -n pmnsfile, --namespace=pmnsfile
41            Load an alternative Performance Metrics Name Space (PMNS(5))  from
42            the file pmnsfile.
43
44       -?, --help
45            Display usage message and exit.
46

CAVEATS

48       Once  the writing of the new namespace file has begun, the signals SIG‐
49       INT, SIGHUP and SIGTERM will be ignored to protect the integrity of the
50       new files.
51

FILES

53       $PCP_VAR_DIR/pmns/root
54            the  default  PMNS,  when the environment variable PMNS_DEFAULT is
55            unset
56

PCP ENVIRONMENT

58       Environment variables with the prefix PCP_ are used to parameterize the
59       file  and  directory names used by PCP.  On each installation, the file
60       /etc/pcp.conf contains the  local  values  for  these  variables.   The
61       $PCP_CONF  variable may be used to specify an alternative configuration
62       file, as described in pcp.conf(5).
63