Red Hat Bugzilla – Bug 1272082
Can't record archives without pmcd with Python PMAPI pmgui
Last modified: 2016-12-20 09:59:58 EST
Description of problem:
This one is firmly in the nice-to-have category.
pmlogger(1) can collect metrics without pmcd(1) using local DSO PMDAs with the -o option. PCPIntro(1) states that @ as host has a special meaning, it refers to PM_CONTEXT_LOCAL. However, when using pmgui.pmRecordAddHost, @ is used with the -h option and pmlogger fails to start. Since adding -h is currently hard-coded it's not possible, for example, to workaround this by adding -o with pmgui.pmRecordControl/PM_REC_SETARGS. So it would be nice to pass "-o" instead of "-h @" to pmlogger when the host is @.
For the above to be fully usable, it should probably be possible to pass -K <spec> via the API as well. While PM_REC_SETARGS already should allow this, a Python client started with -K can't query its own parameters for -K so something like pmapi.pmGetOptionSpecLocal() would probably be needed.
I'm not entirely sure would this be worth the effort but let's at least document the current situation here, just for the record.
This limitation concerns only the pmgui approach, pmi can be used instead to create archives with -L.
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