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telemetry_opcua_exporter

Server Configuration

info to set in execution flag :

bindAddress := flag.String("bindAddress", ":4242", "Address to listen on for web interface.")
configFile = flag.String("configFile", "opcua.yaml", "Path to configuration file.")
endpoint := flag.String("endpoint", "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", "OPC UA Endpoint URL")
auth := flag.String("auth-mode", "UserName", "Authentication Mode: one of Anonymous, UserName, Certificate")
verbosity := flag.String("verbosity", "info", "Log verbosity (debug/info/warn/error/fatal)")

To choose policy and mode :

policy := flag.String("sec-policy", "None", "Security Policy URL or one of None, Basic128Rsa15, Basic256, Basic256Sha256")
mode := flag.String("sec-mode", "auto", "Security Mode: one of None, Sign, SignAndEncrypt")

"auto" mode will find the highest security level according to selected endpoint beware that both policy and mode cannot be set to None

If auth is set to "Certificate" are mandatory :

certfile := flag.String("cert", "cert.crt", "Path to certificate file")
keyfile := flag.String("key", "cert.key", "Path to PEM Private Key file")

If auth is set to "UserName" are mandatory :

username := flag.String("user", "admin", "Username to use in auth-mode UserName")
password := flag.String("password", "admin", "Password to use in auth-mode UserName")

Metrics Configuration

metrics configuration should be through yaml file following this pattern :

metrics:
  - name: Temperature   # MANDATORY
    help: get metrics for machine temperature # MANDATORY
    nodeid: ns=2;i=10853 # MANDATORY and UNIQUE for each metric
    labels: # if metrics share the same name they can be distinguis by labels
      site: MLK
    type: gauge # MANDATORY metric type can be counter, gauge, Float, Double
  - name: Temperature
    help: get metrics for machine temperature
    nodeid: ns=2;i=10852
    labels: 
      site: Paris
    type: gauge

Https Routes

show current metrics

curl 127.0.0.1:4242/metrics

show current config

curl 127.0.0.1:4242/config

reload config from opcua.yaml file

curl 127.0.0.1:4242/reload/config

change config from body's request data

curl --request POST \      
  --url 127.0.1:4242/config/update \
  --header 'content-type: x-yaml' \
  --data "metrics:
  - name: plop
    help: plop
    nodeid: ns=2;i=10853
    labels: {}
    type: gauge"

Please take note that it's also rewrite opcua.yaml with the input file

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Expose OPCUA nodes to Prometheus

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