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Seata

Configuration

Seata supports Metrics data collection on TC and output to Prometheus monitoring system.

Open Seata Metrics

  • Configure Metrics on TC and Metrics on TC. Seata Server already contains Metrics ( seata-metrics-all) dependencies, but it is off by default and needs to turn on metrics collection configuration. (This step is very important)

Seata 1.5.0+ Use application.yaml

seata:
  metrics:
    enabled: true
    registry-type: compact
    exporter-list: prometheus
    exporter-prometheus-port: 9898

Seata <1.5.0 Turn on metrics

GitHub address configuration: https://github.com/seata/seata/blob/1.4.2/server/src/main/resources/file.conf.example

Server-side configuration metrics

[file.conf]

metrics {
  enabled = true
  registryType = "compact"
  # multi exporters use comma divided
  exporterList = "prometheus"
  exporterPrometheusPort = 9898
}

[registry.conf]

registry {
    type = "nacos"
    nacos {
      application = "application name"
      serverAddr = "xxxx:port"
      group = "group name"
      namespace = "namespace"
      cluster = "default"
      username = "username"
      password = "password"
    }
}
config {
  type = "file"
  file {
    name="file:/root/seata-config/file.conf"
  }
}

# HELP seata seata
# TYPE seata untyped
seata_transaction{meter="counter",role="tc",status="committed",} 1358.0 1551946035372
seata_transaction{meter="counter",role="tc",status="active",} 0.0 1551946035372
seata_transaction{meter="summary",role="tc",statistic="count",status="committed",} 6.0 1551946035372
seata_transaction{meter="summary",role="tc",statistic="total",status="committed",} 6.0 1551946035372
seata_transaction{meter="summary",role="tc",statistic="tps",status="committed",} 1.6163793103448276 1551946035372
seata_transaction{meter="timer",role="tc",statistic="count",status="committed",} 6.0 1551946035372
seata_transaction{meter="timer",role="tc",statistic="total",status="committed",} 910.0 1551946035372
seata_transaction{meter="timer",role="tc",statistic="max",status="committed",} 164.0 1551946035372
seata_transaction{meter="timer",role="tc",statistic="average",status="committed",} 151.66666666666666 1551946035372

Similar data above proves that metric was successfully turned on. (If some Transaction states do not occur, such as rollback, then the corresponding Metrics metric does not exist (output)

Open DataKit Collector

  • Open the DataKit Prometheus plug-in and create seata-prom.conf
cd /usr/local/datakit/conf.d/prom/
cp prom.conf.sample seata-prom.conf
  • Modify seata-prom.conf Profile
[[inputs.prom]]
  urls = ["http://ip:9898/metrics"]

  ignore_req_err = false

  source = "seata"
  metric_types = []

  metric_name_filter = ["seata_*"]
  measurement_prefix = "seata_"

  interval = "10s"
  • Restart DataKit
systemctl restart datakit

Metric

Metric Description
seata.transaction (role=tc, meter=counter, status=active/committed/rollback) current active/committed/rollback transaction count
seata.transaction (role=tc, meter=summary, statistic=count, status=committed/rollback) current committed/rollback transaction count
seata.transaction (role=tc, meter=summary, statistic=tps, status=committed/rollback) current committed/rollback transaction count . TPS(transaction per second)
seata.transaction (role=tc, meter=timer, statistic=total, status=committed/rollback) current committed/rollback transaction total count
seata.transaction (role=tc, meter=timer, statistic=count, status=committed/rollback) current committed/rollback transaction count
seata.transaction (role=tc, meter=timer, statistic=average, status=committed/rollback) current committed/rollback transaction average duration
seata.transaction (role=tc, meter=timer, statistic=max, status=committed/rollback) current committed/rollback transaction max duration

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