# Keepalive Cerbo-MQTT-Telegraf-Influx-Grafana **URL:** \ **Category:** Modifications\ **Tags:** node-red, cerbo\_gx, diy, offgrid, cerbo-gx\ **Created:** [13 July 2026 03:51 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367 "2026-07-13T03:51:02Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![McKillop](https://avatars.discourse-cdn.com/v4/letter/m/ce7236/32.png) [@McKillop](https://community.victronenergy.com/u/McKillop)\ **Post date:** [13 July 2026 03:51 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/1 "2026-07-13T03:51:02Z")
Cerbo Gx V3.75,Telegraf V1.39 Influxdb2. Telegraf and Influxdb2 are running on a Raspberry Pi Debian 13 and Grafana is on MacBook, all within wired ethernet LAN. I have the MQTT writing to Telegraf, which is writing to Influxdb and all data is correct. I cannot however manage to keep the Cerbo MQTT server open. I ran a mosquitto\_pub message to the Cerbo with a message “” (empty) and put this in a crontab which repeats every 45 seconds. The job is running correctly but the Cerbo MQTT closes after 1 minute. - _mosquitto\_pub -h 192.168.8.xxx-t ‘R/c0619abxxxxx/keepalive’ -n_ I tried the NodeRed Inject - MQTT out as suggested in the post - [Local MQTT connection times out](https://community.victronenergy.com/t/local-mqtt-connection-times-out/26437) From this Github [GitHub - victronenergy/dbus-flashmq: Plugin for FlashMQ that interfaces between DBUS and MQTT. · GitHub](https://github.com/victronenergy/dbus-flashmq) , which details a keepalive in the document. I ran the script in the terminal - ( _first=“”; while true; do if [[-n “$first”]]; then echo ‘{ “keepalive-options” : [“suppress-republish”] }’; else echo “”; fi ; first=true; sleep 30; done ) | mosquitto\_pub -t ‘R/c0619abxxxxx/keepalive’ -l -h ‘192.168.8.xxx’_ But the terminal froze. I am only just beginning in my computer knowledge, is anyone able to help me with a keepalive as above and if so what I did wrong when running the terminal script. ---
**Author:** ![Marc\_HD](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/marc_hd/32/9108_2.png) [@Marc\_HD](https://community.victronenergy.com/u/Marc_HD)\ **Post date:** [13 July 2026 04:22 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/2 "2026-07-13T04:22:13Z")
Dear MCKillop, read [Keepalive via NodeRed to Venus - VictronEnergy](https://communityarchive.victronenergy.com/questions/193342/keepalive-via-nodered-to-venus.html) Some answer is from marc-hd with a complete howto in node red. Have fun Marc ---
**Author:** ![CZvacko](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@CZvacko](https://community.victronenergy.com/u/CZvacko)\ **Post date:** [13 July 2026 05:12 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/3 "2026-07-13T05:12:55Z")
I had a similar issue. [Here](https://community.victronenergy.com/t/mqtt-data-to-grafana/40866/12) is an example of a Node-RED keep-alive flow. ---
**Author:** ![McKillop](https://avatars.discourse-cdn.com/v4/letter/m/ce7236/32.png) [@McKillop](https://community.victronenergy.com/u/McKillop)\ **Post date:** [13 July 2026 05:43 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/4 "2026-07-13T05:43:27Z")
Yes, that is the post that I used to set up the node red. The only difference is that I set it with unsecured, hence port 1883. But it didn’t work. ---
**Author:** ![CZvacko](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@CZvacko](https://community.victronenergy.com/u/CZvacko)\ **Post date:** [13 July 2026 06:59 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/5 "2026-07-13T06:59:47Z")
Does MQTT out node show connected ? Are you sure about that port, _mosquitto\_sub_ can connect into? ---
**Author:** ![McKillop](https://avatars.discourse-cdn.com/v4/letter/m/ce7236/32.png) [@McKillop](https://community.victronenergy.com/u/McKillop)\ **Post date:** [13 July 2026 09:09 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/6 "2026-07-13T09:09:45Z")
The Node is showing as connected. I use port 1883 for the Telegraf.conf and data is being transferred when the Cerbo is triggered by viewing the Webgui in a browser. I have attached 2 of the screen shots from the Node Red browser. [Cerbo Node Red 2.pdf](https://community.victronenergy.com/uploads/short-url/xSXA2vO7b8RVqSIQiFiFNFtFca1.pdf) (157.5 KB) [Cerbo Node Red 1.pdf](https://community.victronenergy.com/uploads/short-url/2mD04ATlo73HhbsFnZcGDEJPTfe.pdf) (207.5 KB) ---
**Author:** ![CZvacko](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@CZvacko](https://community.victronenergy.com/u/CZvacko)\ **Post date:** [13 July 2026 09:48 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/7 "2026-07-13T09:48:35Z")
Isn’t the MQTT topic case sensitive? Try using an uppercase ‘R’. ---
**Author:** ![McKillop](https://avatars.discourse-cdn.com/v4/letter/m/ce7236/32.png) [@McKillop](https://community.victronenergy.com/u/McKillop)\ **Post date:** [14 July 2026 23:44 UTC](https://community.victronenergy.com/t/keepalive-cerbo-mqtt-telegraf-influx-grafana/60367/8 "2026-07-14T23:44:14Z")
Thank you, that now works. Both Cerbos now being recorded in Influxdb. I will try and get the Debian crontab working so I can take the Cerbos off OS Large and Node Red.