May 2019
Intermediate to advanced
442 pages
11h 36m
English
Content preview from Hands-On Infrastructure Monitoring with Prometheus
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Time functions
Prometheus supplies a number of functions to help manipulating time data. These are useful for a couple of scenarios, such as checking how long ago was a process or batch job last seen, only triggering alerts at certain times, or not triggering them at all on certain days. Every time function in Prometheus assumes Universal Coordinated Time (UTC).
The time function returns an instant vector with the current time in the UNIX epoch format (commonly known as a UNIX timestamp): the number of seconds that have elapsed since January 1st, 1970 UTC.
The timestamp function returns an instant vector with the UNIX timestamps of the samples returned by the supplied selector.
The minute, hour, month and year functions all work the same ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.