OpenObserve 指标和链路追踪方面的支持

# prometheus.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-config
  namespace: openobserve
data:
  prometheus.yaml: |
    global:
      scrape_interval: 15s
      scrape_timeout: 15s
    remote_write:  # 写入到远程 OO，url 是远程写入接口地址
    - url: http://openobserve.openobserve.svc.cluster.local:5080/api/default/prometheus/api/v1/write
      basic_auth:
        username: root@example.com
        password: root321
      # queue_config:    # 如果 Prometheus 抓取指标很大，可以加调整 queue，但是会提高内存占用
      #   max_samples_per_send: 10000  # 每次发送的最大样本数
      #   capacity: 20000
      #   max_shards: 30   # 最大分片数，即并发量。
    scrape_configs:
    - job_name: "nodes"
      static_configs:
      - targets: ['10.206.16.6:9100', '10.206.16.5:9100', '10.206.16.10:9100']
      relabel_configs: # 通过 relabeling 从 __address__ 中提取 IP 信息，为了后面验证 VM 是否兼容 relabeling
      - source_labels: [__address__]
        regex: "(.*):(.*)"
        replacement: "${1}"
        target_label: 'ip'
        action: replace
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus
  namespace: openobserve
spec:
  selector:
    matchLabels:
      app: prometheus
  template:
    metadata:
      labels:
        app: prometheus
    spec:
      containers:
        - args:
            - --config.file=/etc/prometheus/prometheus.yaml
            - --storage.tsdb.path=/prometheus
            - --storage.tsdb.retention.time=4h
            - --web.enable-lifecycle
          image: prom/prometheus:v2.44.0
          imagePullPolicy: IfNotPresent
          name: prometheus
          ports:
            - containerPort: 9090
              name: http
              protocol: TCP
          securityContext:
            runAsUser: 0
          volumeMounts:
            - mountPath: /etc/prometheus
              name: config-volume
            - mountPath: /prometheus
              name: data
      volumes:
        - name: data
          emptyDir: {}
        - configMap:
            defaultMode: 420
            name: prometheus-config
          name: config-volume
---
apiVersion: v1
kind: Service
metadata:
  name: prometheus
  namespace: openobserve
spec:
  ports:
    - name: http
      port: 9090
      targetPort: 9090
  selector:
    app: prometheus
  type: NodePort

$ kubectl apply -f prometheus.yaml
$ kubectl get pods -n openobserve
NAME                          READY   STATUS    RESTARTS   AGE
openobserve-0                 1/1     Running   0          2d18h
prometheus-756c8c78f5-kvvbl   1/1     Running   0          20s
$ kubectl get svc -n openobserve
NAME          TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
openobserve   ClusterIP   None            <none>        5080/TCP         2d18h
prometheus    NodePort    10.107.32.131   <none>        9090:31019/TCP   37s

exporters:
  prometheusremotewrite:
    endpoint: "http://<oo-url>/api/org_name/prometheus/api/v1/write"
    headers:
      Authorization: Basic base64_encoded_data_of(userid:password)

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.resources import SERVICE_NAME, Resource
from opentelemetry.sdk.trace.export import BatchSpanProcessor
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter


# Service name is required for most backends
resource = Resource(attributes={
    SERVICE_NAME: "python-service"
})

# create a tracer provider
tracer_provider = TracerProvider(resource=resource)

# create an OTLP trace exporter
url = 'HTTP_Endpoint'
headers = {"Authorization": "Authorization"}

exporter = OTLPSpanExporter(endpoint=url, headers=headers)

# create a span processor to send spans to the exporter
span_processor = BatchSpanProcessor(exporter)

# add the span processor to the tracer provider
tracer_provider.add_span_processor(span_processor)

# set the tracer provider as the global provider
trace.set_tracer_provider(tracer_provider)

# ......
exporters: # 导出器，用于导出数据
  jaeger:
    endpoint: "jaeger:14250" # 使用 jaeger 容器名称
    tls:
      insecure: true # 不使用 TLS

  # Data sources: traces, metrics
  otlphttp:
    traces_endpoint: http://url:5080/api/<orgname>/traces # OpenObserve 的接口地址，这里要用 traces_endpoint
    headers:
      Authorization: Basic base64(userid:password) # 管理员的认证信息

service: # 服务配置
  pipelines: # 管道配置
    traces: # 链路追踪配置
      receivers: [otlp] # 接收器
      exporters: [otlphttp] # 导出器
      processors: [batch] # 处理器

{
  "text": "For stream {stream_name} of organization {org_name} alert {alert_name} of type {alert_type} is active"
}

select count(*) as echocnt FROM 'K8sLogs' WHERE (_timestamp >= 1691488182902275 AND _timestamp < 1691488242902275)  LIMIT 100