常用服务docker安装

常用服务

pg, mysql， redis 等服务

docker run -d \
  --name=postgres \
  -e POSTGRES_PASSWORD=password \
  -e POSTGRES_USER=postgres \
  -e POSTGRES_DB=postgres \
  -v ./postgres/data:/var/lib/postgresql/data \
  -p 5432:5432 \
  postgres
  
docker run -d \
  --name=mysql \
  -e MYSQL_ROOT_PASSWORD=yourrootpassword \
  -e MYSQL_DATABASE=yourdatabase \
  -e MYSQL_USER=yourusername \
  -e MYSQL_PASSWORD=yourpassword \
  -v ./mysql/data:/var/lib/mysql \
  -p 3306:3306 \
  mysql
  
  

docker run -d \
  --name=redis \
  -v ./redis/data:/data \
  -p 6379:6379 \
  redis

prometheus, grafana, nodeexport 等服务

docker run -d \
  --name=prometheus \
  -v ./prometheus/config/prometheus.yml:/etc/prometheus/prometheus.yml \
  -v ./prometheus/data:/prometheus \
  -p 9090:9090 \
  prom/prometheus



docker run -p 3000:3000 --name grafana \
  -v /opt/prometheus/grafana/data:/var/lib/grafana \
  -e "GF_SECURITY_ADMIN_PASSWORD=grafana123" \
  -itd grafana/grafana

# -v ./prometheus/grafana/grafana.ini:/etc/grafana/grafana.ini  # 按需设置

docker run -d --name node-exporter --restart=always -p 9100:9100 -v "/proc:/host/proc:ro" -v "/sys:/host/sys:ro" -v "/:/rootfs:ro" prom/node-exporter

Pyroscope

Pyroscope 是一个开源的性能剖析工具，可以帮助开发者对应用程序进行性能分析、热点诊断，并提供对性能问题的可视化支持。它支持多种语言和运行时环境（如 Go、Python、Ruby、Java 等），可以在生产环境中对应用程序进行低开销的性能剖析

安装

docker run -it --net=host -e "PYROSCOPE_SERVER_HTTP_ADDRESS=0.0.0.0:4040" grafana/pyroscope

使用 pyroscope-test.py

#  pip install pyroscope-io
import pyroscope
import time
import random

# 配置 Pyroscope
pyroscope.configure(
    application_name="my2.python.app",
    server_address="http://localhost:4040",
    # 可选：设置更多参数
    # sample_rate=100,  # 每秒采样次数
    # detect_subprocesses=True,  # 检测子进程
    # gil_only=False  # 是否只分析持有 GIL 的线程
)

def cpu_intensive_task():
    """模拟 CPU 密集型任务"""
    result = 0
    for _ in range(10000):
        result += random.randint(1, 100) ** 2
    return result

def main():
    try:
        while True:
            cpu_intensive_task()
            time.sleep(0.1)  # 控制执行频率
    except KeyboardInterrupt:
        print("性能分析结束")

if __name__ == "__main__":
    main()

验证

集成到 grafana

grafana 里运行
grafana-cli plugins install pyroscope-datasource

使用 alloy 搭配

alloy 配置文件

logging {
  level = "info"
  format = "logfmt"
}

pyroscope.scrape "local" {
  targets = array.concat([
    {"__address__" = "pyroscope:4040", "service_name"="pyroscope"},
    {"__address__" = "localhost:12345", "service_name"="alloy"},
  ])

  forward_to = [pyroscope.write.local.receiver]
}

pyroscope.write "local" {
  endpoint {
    url = "http://pyroscope:4040"
  }
}

alloy 安装 (k8s helm)

helm repo add grafana https://grafana.github.io/helm-charts
helm repo update
helm install --namespace  pyroscope alloy2 grafana/alloy

默认生成的配置文件

# Source: alloy/templates/configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: alloy2
  labels:
    helm.sh/chart: alloy-0.10.0
    app.kubernetes.io/name: alloy
    app.kubernetes.io/instance: alloy2
    
    app.kubernetes.io/version: "v1.5.0"
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/part-of: alloy
    app.kubernetes.io/component: config
data:
  config.alloy: |-

    logging {
        level  = "info"
        format = "logfmt"
    }

    profiling {
        enabled = true
        endpoint = "http://pyroscope:4040"
        application_name = "alloy"
    }

    
    discovery.kubernetes "pods" {
        role = "pod"
    }
    
    discovery.kubernetes "nodes" {
        role = "node"
    }
    
    discovery.kubernetes "services" {
        role = "service"
    }
    
    discovery.kubernetes "endpoints" {
        role = "endpoints"
    }
    
    discovery.kubernetes "endpointslices" {
        role = "endpointslice"
    }
    
    discovery.kubernetes "ingresses" {
        role = "ingress"
    }

使用 values.yaml

alloy:
  configMap:
    create: true
    content: |
      discovery.kubernetes "all_pods" {
        role = "pod"
        selectors {
          field = "spec.nodeName=" + env("HOSTNAME")
          role = "pod"
        }
      }
      
      discovery.relabel "local_pods" {
        targets = discovery.kubernetes.all_pods.targets
        rule {
          action = "drop"
          regex = "Succeeded|Failed"
          source_labels = ["__meta_kubernetes_pod_phase"]
        }
        rule {
          action = "replace"
          regex = "(.*)@(.*)"
          replacement = "ebpf/${1}/${2}"
          separator = "@"
          source_labels = ["__meta_kubernetes_namespace", "__meta_kubernetes_pod_container_name"]
          target_label = "service_name"
        }
        rule {
          action = "labelmap"
          regex = "__meta_kubernetes_pod_label_(.+)"
        }
        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_namespace"]
          target_label = "namespace"
        }
        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_name"]
          target_label = "pod"
        }
        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_node_name"]
          target_label = "node"
        }
        rule {
          action = "replace"
          source_labels = ["__meta_kubernetes_pod_container_name"]
          target_label = "container"
        }
      }
      pyroscope.ebpf "local_pods" {
        forward_to = [ pyroscope.write.endpoint.receiver ]
        targets = discovery.relabel.local_pods.output
      }
      
      pyroscope.write "endpoint" {
        endpoint {
          url = "http://pyroscope:4040"
        }
      }	
  securityContext:
    privileged: true
    runAsGroup: 0
    runAsUser: 0

controller:
  hostPID: true

生成的配置文件

apiVersion: v1
kind: ConfigMap
metadata:
  name: alloy2
  namespace: common-infra-prod
data:
  config.alloy: |-	
    discovery.kubernetes "all_pods" {
      role = "pod"
      selectors {
        field = "spec.nodeName=" + env("HOSTNAME")
        role = "pod"
      }
    }
    
    discovery.relabel "local_pods" {
      targets = discovery.kubernetes.all_pods.targets
      rule {
        action = "drop"
        regex = "Succeeded|Failed"
        source_labels = ["__meta_kubernetes_pod_phase"]
      }
      rule {
        action = "replace"
        regex = "(.*)@(.*)"
        replacement = "ebpf/${1}/${2}"
        separator = "@"
        source_labels = ["__meta_kubernetes_namespace", "__meta_kubernetes_pod_container_name"]
        target_label = "service_name"
      }
      rule {
        action = "labelmap"
        regex = "__meta_kubernetes_pod_label_(.+)"
      }
      rule {
        action = "replace"
        source_labels = ["__meta_kubernetes_namespace"]
        target_label = "namespace"
      }
      rule {
        action = "replace"
        source_labels = ["__meta_kubernetes_pod_name"]
        target_label = "pod"
      }
      rule {
        action = "replace"
        source_labels = ["__meta_kubernetes_node_name"]
        target_label = "node"
      }
      rule {
        action = "replace"
        source_labels = ["__meta_kubernetes_pod_container_name"]
        target_label = "container"
      }
    }
    pyroscope.ebpf "local_pods" {
      forward_to = [ pyroscope.write.endpoint.receiver ]
      targets = discovery.relabel.local_pods.output
    }
    
    pyroscope.write "endpoint" {
      endpoint {
        url = "http://pyroscope:4040"
      }
    }