Write item to RRD once a day at specific time

Setup, Configuration and Use Beginners
1

I want to store my daily heating gas usage into aa RRD database, at the same time each day.

I have the following setup for this:
rrd4j.persist:
Strategies {
// for rrd charts, we need a cron strategy
everyMinute : “0 * * * * ?”
endOfDay : “0 57 23 * * ?”
every5Minutes : “0 */5 * * * ?”
every10Minutes : “0 */10 * * * ?”
everyHour : “0 0 * * * ?”
default = everyChange, restoreOnStartup
}

Items {
	Gas : strategy = endOfDay
}

rrd4j.cfg
gas.def=GAUGE,87000,U,U,86400
gas.archives=MAX,0.5,1,365
gas.items=Gas

In the log file, I see that the Gas value is stored in the database:
2019-01-16 23:57:00.473 [DEBUG] [sistence.rrd4j.internal.RRD4jService] - Stored ‘Gas’ with state ‘347.119’ in rrd4j database

But nothing shows up in the database.

In works however when I use strategy everyHour and gas.def=GAUGE,3700,U,U,3600, which gives me an entry every hour.

What am I doing wrong with the daily logging?

2

It might be due to rrd4j internals, see this post. Anyway, what’s wrong with saving values every hour.