Hi @loneWolf666,
not to worry what you need to do is filter those metrics out. So they are not processed through the starlark plugin or your output plugin to system resource. I have taken your config and applied an example but you will need to replace the <INSERT> with your own measurements name:
##################### system resource telegraf config ##################################
## Organization is the name of the organization you wish to write to; must exist.
organization = "trunkport"
## Destination bucket to write into.
bucket = "system_resource"
## The value of this tag will be used to determine the bucket. If this
## tag is not set the 'bucket' option is used as the default.
# bucket_tag = ""
## If true, the bucket tag will not be added to the metric.
# exclude_bucket_tag = false
## Timeout for HTTP messages.
# timeout = "5s"
## Additional HTTP headers
# http_headers = {"X-Special-Header" = "Special-Value"}
## HTTP Proxy override, if unset values the standard proxy environment
## variables are consulted to determine which proxy, if any, should be used.
# http_proxy = "http://corporate.proxy:3128"
## HTTP User-Agent
# user_agent = "telegraf"
## Content-Encoding for write request body, can be set to "gzip" to
## compress body or "identity" to apply no encoding.
# content_encoding = "gzip"
## Enable or disable uint support for writing uints influxdb 2.0.
# influx_uint_support = false
## Optional TLS Config for use on HTTP connections.
# tls_ca = "/etc/telegraf/ca.pem"
# tls_cert = "/etc/telegraf/cert.pem"
# tls_key = "/etc/telegraf/key.pem"
## Use TLS but skip chain & host verification
# insecure_skip_verify = false
[[inputs.cpu]]
## Whether to report per-cpu stats or not
percpu = true
## Whether to report total system cpu stats or not
totalcpu = true
## If true, collect raw CPU time metrics
collect_cpu_time = false
## If true, compute and report the sum of all non-idle CPU states
report_active = false
[[inputs.disk]]
## By default stats will be gathered for all mount points.
## Set mount_points will restrict the stats to only the specified mount points.
# mount_points = ["/"]
## Ignore mount points by filesystem type.
ignore_fs = ["tmpfs", "devtmpfs", "devfs", "iso9660", "overlay", "aufs", "squashfs"]
[[inputs.diskio]]
## By default, telegraf will gather stats for all devices including
## disk partitions.
## Setting devices will restrict the stats to the specified devices.
# devices = ["sda", "sdb", "vd*"]
## Uncomment the following line if you need disk serial numbers.
# skip_serial_number = false
#
## On systems which support it, device metadata can be added in the form of
## tags.
## Currently only Linux is supported via udev properties. You can view
## available properties for a device by running:
## 'udevadm info -q property -n /dev/sda'
## Note: Most, but not all, udev properties can be accessed this way. Properties
## that are currently inaccessible include DEVTYPE, DEVNAME, and DEVPATH.
# device_tags = ["ID_FS_TYPE", "ID_FS_USAGE"]
#
## Using the same metadata source as device_tags, you can also customize the
## name of the device via templates.
## The 'name_templates' parameter is a list of templates to try and apply to
## the device. The template may contain variables in the form of '$PROPERTY' or
## '${PROPERTY}'. The first template which does not contain any variables not
## present for the device is used as the device name tag.
## The typical use case is for LVM volumes, to get the VG/LV name instead of
## the near-meaningless DM-0 name.
# name_templates = ["$ID_FS_LABEL","$DM_VG_NAME/$DM_LV_NAME"]
[[inputs.mem]]
# no configuration
[[inputs.net]]
## By default, telegraf gathers stats from any up interface (excluding loopback)
## Setting interfaces will tell it to gather these explicit interfaces,
## regardless of status.
##
# interfaces = ["eth0"]
##
## On linux systems telegraf also collects protocol stats.
## Setting ignore_protocol_stats to true will skip reporting of protocol metrics.
##
# ignore_protocol_stats = false
##
[[inputs.processes]]
# no configuration
[[inputs.swap]]
# no configuration
[[inputs.system]]
## Uncomment to remove deprecated metrics.
# fielddrop = ["uptime_format"]
################# iot monitor config.d dir telegraf ############################
## Destination bucket to write into.
bucket = "vehicle_info"
## The value of this tag will be used to determine the bucket. If this
## tag is not set the 'bucket' option is used as the default.
# bucket_tag = ""
## If true, the bucket tag will not be added to the metric.
# exclude_bucket_tag = false
## Timeout for HTTP messages.
# timeout = "5s"
## Additional HTTP headers
# http_headers = {"X-Special-Header" = "Special-Value"}
## HTTP Proxy override, if unset values the standard proxy environment
## variables are consulted to determine which proxy, if any, should be used.
# http_proxy = "http://corporate.proxy:3128"
## HTTP User-Agent
# user_agent = "telegraf"
## Content-Encoding for write request body, can be set to "gzip" to
## compress body or "identity" to apply no encoding.
# content_encoding = "gzip"
## Enable or disable uint support for writing uints influxdb 2.0.
# influx_uint_support = false
## Optional TLS Config for use on HTTP connections.
# tls_ca = "/etc/telegraf/ca.pem"
# tls_cert = "/etc/telegraf/cert.pem"
# tls_key = "/etc/telegraf/key.pem"
## Use TLS but skip chain & host verification
# insecure_skip_verify = false
###############################################################################
# INPUT PLUGINS #
###############################################################################
[[inputs.mqtt_consumer]]
## Broker URLs for the MQTT server or cluster. To connect to multiple
## clusters or standalone servers, use a seperate plugin instance.
## example: servers = ["tcp://localhost:1883"]
## servers = ["ssl://localhost:1883"]
## servers = ["ws://localhost:1883"]
## servers = ["tcp://172.29.60.10:1883"]
servers = ["tcp://172.17.0.2:1883"]
## Topics that will be subscribed to.
topics = [
"/realtime-monitor/upload-info/+"
]
## Data format to consume.
## Each data format has its own unique set of configuration options, read
## more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
data_format = "json"
name_override = "test-list-2"
###############################################################################
# Processor PLUGINS #
###############################################################################
#credit goes to @srebhan
[[processors.starlark]]
namepass = ["test-list-2"]
source = '''
def apply(metric):
fields = ["wheel_angle", "wheel_odometer"]
for f in fields:
key_prefix = f+"_"
key_len = len(key_prefix)
keys = [x for x in metric.fields.keys() if x.startswith(key_prefix)]
keys = sorted(keys, key=lambda x: int(x[key_len:]))
values = [str(metric.fields.pop(k)) for k in keys]
new_value = "["+', '.join(values)+"]"
metric.fields[f] = new_value
return metric
'''
