cockroachdb docker-compose 本地集群运行以及prometheus监控

cockroachdb 官方提供的是一个直接使用docker 运行的方式，但是使用docker-compose 会比较方便，可以快速搭建一个集群
同时官方也提供了prometheus 的metrics，我们可以快速的通过grafana 提供一个dashboard

docker-compose 运行

version: "3"

services:

   grafana:

    image: grafana/grafana

    ports:

    - "3000:3000"

   alert:

    image: prom/alertmanager

    ports:

    - "9093:9093"

   prometheus:

    image: prom/prometheus

    volumes:

    - "./rules:/rules"

    - "./prometheus.yml:/etc/prometheus/prometheus.yml"

    ports:

    - "9090:9090"

   roach1:

    image: cockroachdb/cockroach:v19.1.5

    hostname: roach1

    command: start --insecure

    volumes:

    - "./data1:/cockroach/cockroach-data"

    ports:

    - "26257:26257"

    - "8081:8080"

   roach2:

    image: cockroachdb/cockroach:v19.1.5

    hostname: roach2

    command: start --insecure --join=roach1

    volumes:

    - "./data2:/cockroach/cockroach-data"

    ports:

    - "26258:26257"

    - "8082:8080"

   roach3:

    image: cockroachdb/cockroach:v19.1.5

    hostname: roach3

    command: start --insecure --join=roach1

    volumes:

    - "./data3:/cockroach/cockroach-data"

    ports:

    - "26259:26257"

    - "8083:8080"

官方已经提供好了alertmanager 的rule同时也给我们提供了grafana dashboard 的json 文件
参考https://www.cockroachlabs.com/docs/stable/monitor-cockroachdb-with-prometheus.html
prometheus.yml:

# Prometheus configuration for cockroach clusters.

# Requires prometheus 2.X

# Run with:

# $ prometheus -config.file=prometheus.yml

global:

  scrape_interval: 10s

  evaluation_interval: 10s

rule_files:

- "/rules/alerts.rules.yml"

- "/rules/aggregation.rules.yml"

# Alert manager running on the same host:

alerting:

  alertmanagers:

  - path_prefix: "/alertmanager/"

    static_configs:

    - targets:

      - alert:9093

scrape_configs:

  - job_name: 'cockroachdb'

    metrics_path: '/_status/vars'

    # Insecure mode:

    scheme: 'http'

    tls_config:

      insecure_skip_verify: true

    static_configs:

    - targets: ['roach1:8080','roach2:8080','roach3:8080']

      labels:

        cluster: 'my-cockroachdb-cluster'

grafana dashboard json 文件可以参考官方文档，或者github 项目