Openhab doesn't write into Influxdb

Add-ons Persistence Services
1

Hello

I installed influxdb and grafana with the help of this tutorial. Everything runs very well but openhab doesnt write values into the created database openhab_db for the water item. With this script it works fine and i can see a nice sine wave in grafana.

influxdb.persist

Strategies {
everyHour : “0 0 * * * ?”
}

Items {
water : strategy = everyChange, everyHour
}

default.items

Number water “consumption: [%.1f m^3]” {mqtt=“<[rpi:home/ke/water:state:default]”}

default.sitemap

sitemap default label=“Main”
{
Frame label=“MQTT” {
Text item=water
}
}

The text item displays the correct value of the current water consumption.

Can anyone help?

2

Maybe not the proper solution, but the only way I could get influx to ever work was to persist all items into the database. Meaning:

* : strategy = everyChange, everyHour

This leads to a potentially huge influx database, but at least I have my data in it…

3

I changed my persistence file but nothing happens.
The database is still empty…

4

Could you perhaps enable logging of the influxdb by adding:

# influxdb logger
log4j.logger.org.openhab.persistence.influxdb = TRACE, influxdb, osgi:*
log4j.additivity.org.openhab.persistence.influxdb = false

# File appender - influxdb.log
log4j.appender.influxdb=org.apache.log4j.DailyRollingFileAppender
log4j.appender.influxdb.layout=org.apache.log4j.PatternLayout
log4j.appender.influxdb.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5.5p] [%-36.36c] - %m%n
log4j.appender.influxdb.file=${openhab.logdir}/influxdb.log
log4j.appender.influxdb.DatePattern='.'yyyy-MM-dd
log4j.appender.influxdb.append=true
log4j.appender.influxdb.maxFileSize=10MB
log4j.appender.influxdb.maxBackupIndex=10

to your org.ops4j.pax.logging.cfg file and restarting openHAB?

This is not the most elegant way of enabling debugging but it helps on my system :smile: You might also want to read how increase logging:

http://docs.openhab.org/administration/logging.html

5

Also, I have the following in my influxdb.cfg:

#
# See
# https://community.openhab.org/t/influxdb-grafana-persistence-and-graphing/13761/62?u=hakan
#
# retentionPolicy=autogen
retentionPolicy=default
#

perhaps this might help too…

6

Groups worked fine for me:

Group gInfluxdb // for Items to preserve history or to persist charting

Number Temperature "Temperatur [%.1f °C]" (gInfluxdb) { mqtt="<[mosquitto:/esp8266four/temperature/shadow:state:default]" }

Strategies {
        default = everyUpdate
}

Items {
        gInfluxdb* : strategy = everyChange, restoreOnStartup
}
7

Maybe this is the issue:
I always had this errormessage in the openhab.log

2017-02-03 21:31:00.173 [ERROR] [i.i.InfluxDBPersistenceService] - database error: {"error":"retention policy not found: default"}

This is because there was a change in influxdb for new builds.
The default retention policy is now “autogen” and not “default”.

See here:
[https://github.com/openhab/openhab1-addons/wiki/InfluxDB-Persistence]

> show retention policies on openhab
name    duration shardGroupDuration replicaN default
----    -------- ------------------ -------- -------
autogen 0s       168h0m0s           1        false

Now i create a second policy and it works.

CREATE RETENTION POLICY "default" ON "openhab" DURATION 0s   REPLICATION 1 DEFAULT