psmqtt - system statistics via MQTT#

simpleswitch-psmqtt offers a service that gathers data about your system, such as CPU load, memory consumption, disk usage, uptime and more.

Data will be published to our simpleswitch-mosquitto MQTT broker.

Registration

If you want to test SimpleCore™, SimpleSwitch™ or any of our packages from our SimpleCore™ incubator program, please register here and we will grant you access.

How to get it#

  • container-helper
  • Scotty
  • Bitbake
    ## From the base image run
    $ skopeo login ghcr.io
    $ export machine=$CONTAINER_HELPER_ARCH
    $ export package=simpleswitch-psmqtt
    $ export tag=$RELEASE_VERSION
    $ container-helper registry-install ghcr.io ghcr.io/avnet-embedded/simpleswitch/${machine}/${package}:${tag}
    $ simpleswitch-helper start ${package}

    ## On your computer run
    $ scotty build simpleswitch-psmqtt

    ## On your computer run
    $ bitbake simpleswitch-psmqtt

Custom configuration#

You can apply a custom configuration for the service, by adding a psmqtt config file to /apps/psmqtt/psmqtt.conf.

Standard configuration#

Out of the box the service will gather and publish the following data every 60 seconds

MQTT topic

Description

psmqtt/cpu/load/#

CPU load - subtopic for each core

psmqtt/cpu/times/guest

Guest CPU time ++

psmqtt/cpu/times/guest_nice

Guest nice CPU time ++

psmqtt/cpu/times/idle

CPU idle time ++

psmqtt/cpu/times/iowait

IO wait CPU time ++

psmqtt/cpu/times/irq

Interrupt CPU time ++

psmqtt/cpu/times/nice

Nice CPU time ++

psmqtt/cpu/times/softirq

SoftIRQ CPU time ++

psmqtt/cpu/times/steal

Stolen CPU time ++

psmqtt/cpu/times/system

System CPU time ++

psmqtt/cpu/times/user

User CPU time ++

psmqtt/disk/usage/apps/free

Bytes free on SimpleSwitch™ apps partition

psmqtt/disk/usage/apps/percent

Used percentage on SimpleSwitch™ apps partition

psmqtt/disk/usage/apps/total

Total bytes on SimpleSwitch™ apps partition

psmqtt/disk/usage/apps/used

Bytes used on SimpleSwitch™ apps partition

psmqtt/disk/usage/base/free

Bytes free on SimpleSwitch™ base image partition

psmqtt/disk/usage/base/percent

Used percentage on SimpleSwitch™ base image partition

psmqtt/disk/usage/base/total

Total bytes on SimpleSwitch™ base image partition

psmqtt/disk/usage/base/used

Bytes used on SimpleSwitch™ base image partition

psmqtt/memory/percent

Percentage of RAM used

psmqtt/net/bytes_recv

Received network bytes

psmqtt/net/bytes_send

Send network bytes

psmqtt/net/dropin

Dropped received packets

psmqtt/net/dropout

Dropped send packets

psmqtt/net/errin

Errornous received packets

psmqtt/net/errout

Errornous sent packets

psmqtt/net/packets_recv

Received network packets

psmqtt/net/packets_send

Send network packets

psmqtt/sys/boottime

System startup time in UNIX format

psmqtt/sys/uptime

System uptime in seconds

psmqtt/temperature/#

Temperature in ° Celsius - subtopic for each sensor found

++ for more details please refer to this article

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