:wave: Thanks for opening your first issue here! If you're reporting a :bug: bug, please make sure you include steps to reproduce it. Also, logs, error messages and information about your hardware might be useful.

There isn't much here to work from. The only thing I can come up with is a memory issue. If there is not enough memory left on your device, it will start killing processes.

hmm. HP t620 with 4 gigs, about 1.6GB free. glances shows that influxdb container uses about 480MB, but also... 128% of cpu ;) [max, min is about 75%].

I guess there's no other way to see what causes the error? some kind of "master log file" hidden somewhere? ;)

ok, lasted few days as I waited for RAM shipping but - I've added another 4 gigs. so right now I've got 8GB of RAM, there's no way it's going low [about 22-25% used]. influx still goes down every couple of hours.

last log before database down:

[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] 00-banner.sh: executing... 

-----------------------------------------------------------
 Hass.io Add-on: InfluxDB
 Scalable datastore for metrics, events, and real-time analytics
-----------------------------------------------------------
 Add-on version: 3.6.1
 There is an update available for this add-on!
 Latest add-on version: null
 Please consider upgrading as soon as possible.
 System: Ubuntu 18.04.4 LTS  (amd64 / qemux86-64)
 Home Assistant Core: 0.107.7
 Home Assistant Supervisor: 214
-----------------------------------------------------------
 Please, share the above information when looking for help
 or support in, e.g., GitHub, forums or the Discord chat.
-----------------------------------------------------------
[cont-init.d] 00-banner.sh: exited 0.
[cont-init.d] 01-log-level.sh: executing... 
[cont-init.d] 01-log-level.sh: exited 0.
[cont-init.d] create-users.sh: executing... 
[cont-init.d] create-users.sh: exited 0.
[cont-init.d] influxdb.sh: executing... 
[15:37:10] INFO: Reporting of usage stats to InfluxData is disabled.
[cont-init.d] influxdb.sh: exited 0.
[cont-init.d] kapacitor.sh: executing... 
[cont-init.d] kapacitor.sh: exited 0.
[cont-init.d] nginx.sh: executing... 
[cont-init.d] nginx.sh: exited 0.
[cont-init.d] done.
[services.d] starting services
[services.d] done.
[15:37:11] INFO: Kapacitor is waiting until InfluxDB is available...
[15:37:11] INFO: Chronograf is waiting until InfluxDB is available...
[15:37:11] INFO: Starting the InfluxDB...
[15:38:02] INFO: Starting Chronograf...
time="2020-03-30T15:38:17+02:00" level=info msg="Serving chronograf at http://127.0.0.1:8889" component=server
time="2020-03-30T15:38:17+02:00" level=info msg="Reporting usage stats" component=usage freq=24h reporting_addr="https://usage.influxdata.com" stats="os,arch,version,cluster_id,uptime"
[15:38:18] INFO: Starting NGinx...
[00:48:38] WARNING: Kapacitor is done waiting. Starting anyway...
[00:48:39] INFO: Starting the Kapacitor

'##:::'##::::'###::::'########:::::'###:::::'######::'####:'########::'#######::'########::
 ##::'##::::'## ##::: ##.... ##:::'## ##:::'##... ##:. ##::... ##..::'##.... ##: ##.... ##:
 ##:'##::::'##:. ##:: ##:::: ##::'##:. ##:: ##:::..::: ##::::: ##:::: ##:::: ##: ##:::: ##:
2020/03/31 00:48:39 Using configuration at: /etc/kapacitor/kapacitor.conf
 #####::::'##:::. ##: ########::'##:::. ##: ##:::::::: ##::::: ##:::: ##:::: ##: ########::
 ##. ##::: #########: ##.....::: #########: ##:::::::: ##::::: ##:::: ##:::: ##: ##.. ##:::
 ##:. ##:: ##.... ##: ##:::::::: ##.... ##: ##::: ##:: ##::::: ##:::: ##:::: ##: ##::. ##::
 ##::. ##: ##:::: ##: ##:::::::: ##:::: ##:. ######::'####:::: ##::::. #######:: ##:::. ##:
..::::..::..:::::..::..:::::::::..:::::..:::......:::....:::::..::::::.......:::..:::::..::

ts=2020-03-31T00:48:39.582+02:00 lvl=error msg="encountered error" service=run err="open server: open service *influxdb.Service: failed to link subscription on startup: authorization failed"
run: open server: open service *influxdb.Service: failed to link subscription on startup: authorization failed
[cont-finish.d] executing container finish scripts...
[cont-finish.d] 99-message.sh: executing... 
[cont-finish.d] 99-message.sh: exited 0.
[cont-finish.d] done.
[s6-finish] waiting for services.
[s6-finish] sending all processes the TERM signal.

log after restarting:

[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] 00-banner.sh: executing... 

-----------------------------------------------------------
 Hass.io Add-on: InfluxDB
 Scalable datastore for metrics, events, and real-time analytics
-----------------------------------------------------------
 Add-on version: 3.6.1
 There is an update available for this add-on!
 Latest add-on version: null
 Please consider upgrading as soon as possible.
 System: Ubuntu 18.04.4 LTS  (amd64 / qemux86-64)
 Home Assistant Core: 0.107.7
 Home Assistant Supervisor: 214
-----------------------------------------------------------
 Please, share the above information when looking for help
 or support in, e.g., GitHub, forums or the Discord chat.
-----------------------------------------------------------
[cont-init.d] 00-banner.sh: exited 0.
[cont-init.d] 01-log-level.sh: executing... 
[cont-init.d] 01-log-level.sh: exited 0.
[cont-init.d] create-users.sh: executing... 
[cont-init.d] create-users.sh: exited 0.
[cont-init.d] influxdb.sh: executing... 
[11:06:22] INFO: Reporting of usage stats to InfluxData is disabled.
[cont-init.d] influxdb.sh: exited 0.
[cont-init.d] kapacitor.sh: executing... 
[cont-init.d] kapacitor.sh: exited 0.
[cont-init.d] nginx.sh: executing... 
[cont-init.d] nginx.sh: exited 0.
[cont-init.d] done.
[services.d] starting services
[services.d] done.
[11:06:23] INFO: Kapacitor is waiting until InfluxDB is available...
[11:06:23] INFO: Chronograf is waiting until InfluxDB is available...
[11:06:23] INFO: Starting the InfluxDB...
[11:07:03] INFO: Starting Chronograf...
time="2020-03-31T11:07:18+02:00" level=info msg="Reporting usage stats" component=usage freq=24h reporting_addr="https://usage.influxdata.com" stats="os,arch,version,cluster_id,uptime"
time="2020-03-31T11:07:18+02:00" level=info msg="Serving chronograf at http://127.0.0.1:8889" component=server
[11:07:18] INFO: Starting NGinx...

is there really nothing I can do? :(

problem fixed by uninstalling influxdb-addon & by installing influxdb as standalone, not docker-based.

I'm guessing that some combination of influxdb-docker-image and docker itself isn't playing along [probably not docker or influxdb-docker-image by themselves, as other addons/containers work well].

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