Red Hat Summit第6章 Metrics Data Retention
The storage capacity required by PCP data logging is determined by the following factors:
- the metrics being logged,
- the logging interval,
- and the retention policy.
The default logging (sampling) interval is 60 seconds.
The default retention policy is to keep archives for the last 14 days, compressing archives older than one day. PCP archive logs are stored in the /var/log/pcp/pmlogger/hostname directory.
6.1. Changing Default Logging Interval
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This procedure describes how to change the default logging interval.
Procedure
-
Edit the
/etc/pcp/pmlogger/control.d/localconfiguration file. -
Edit the LOCALHOSTNAME line and append
-t XXs, where XX is the desired time interval, measured in seconds. -
Restart the
pmloggerservice.
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