1PMNSDEL(1) General Commands Manual PMNSDEL(1)
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6 pmnsdel - delete a subtree of names from the Performance Co-Pilot PMNS
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9 $PCP_BINADM_DIR/pmnsdel [-n namespace] metricpath [ ... ]
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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).
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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.
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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.
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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).
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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.
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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.
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38 Once the writing of the new namespace file has begun, the signals SIG‐
39 INT, SIGHUP and SIGTERM will be ignored to protect the integrity of the
40 new files.
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43 $PCP_VAR_DIR/pmns/root the default PMNS, when then environment vari‐
44 able PMNS_DEFAULT is unset
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47 Environment variables with the prefix PCP_ are used to parameterize the
48 file and directory names used by PCP. On each installation, the file
49 /etc/pcp.conf contains the local values for these variables. The
50 $PCP_CONF variable may be used to specify an alternative configuration
51 file, as described in pcp.conf(5).
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54 pmnsadd(1), pmnsmerge(1), pcp.conf(5), pcp.env(5) and pmns(5).
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58Performance Co-Pilot PCP PMNSDEL(1)