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zookeeper Monitor prometheus + grafana     所属分类 zookeeper 浏览量 272
https://zookeeper.apache.org/doc/r3.8.0/zookeeperMonitor.html

New Metrics System has been available since 3.6.0 which provides the abundant metrics to help users monitor the ZooKeeper on the topic: 
znode, network, disk, quorum, leader election, client, security, failures, watch/session, requestProcessor, and so forth.


abundant  大量的 

All the metrics are included in the ServerMetrics.java.


Prometheus
Running a Prometheus monitoring service is the easiest way to ingest and record ZooKeeper's metrics.

Pre-requisites:
enable the Prometheus MetricsProvider in the zoo.cfg.
metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider 

the Port is also configurable by setting metricsProvider.httpPort(the default value:7000)


global:
  scrape_interval: 10s
scrape_configs:
  - job_name: test-zk
    static_configs:
    - targets: ['192.168.10.32:7000','192.168.10.33:7000','192.168.10.34:7000']


Prometheus Alertmanager use ./promtool check rules rules/zk.yml to check the correctness of the config file cat rules/zk.yml groups: - name: zk-alert-example rules: - alert: ZooKeeper server is down expr: up == 0 for: 1m labels: severity: critical annotations: summary: "Instance {{ $labels.instance }} ZooKeeper server is down" description: "{{ $labels.instance }} of job {{$labels.job}} ZooKeeper server is down: [{{ $value }}]." - alert: create too many znodes expr: znode_count > 1000000 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} create too many znodes" description: "{{ $labels.instance }} of job {{$labels.job}} create too many znodes: [{{ $value }}]." - alert: create too many connections expr: num_alive_connections > 50 # suppose we use the default maxClientCnxns: 60 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} create too many connections" description: "{{ $labels.instance }} of job {{$labels.job}} create too many connections: [{{ $value }}]." - alert: znode total occupied memory is too big expr: approximate_data_size /1024 /1024 > 1 * 1024 # more than 1024 MB(1 GB) for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} znode total occupied memory is too big" description: "{{ $labels.instance }} of job {{$labels.job}} znode total occupied memory is too big: [{{ $value }}] MB." - alert: set too many watch expr: watch_count > 10000 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} set too many watch" description: "{{ $labels.instance }} of job {{$labels.job}} set too many watch: [{{ $value }}]." - alert: a leader election happens expr: increase(election_time_count[5m]) > 0 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} a leader election happens" description: "{{ $labels.instance }} of job {{$labels.job}} a leader election happens: [{{ $value }}]." - alert: open too many files expr: open_file_descriptor_count > 300 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} open too many files" description: "{{ $labels.instance }} of job {{$labels.job}} open too many files: [{{ $value }}]." - alert: fsync time is too long expr: rate(fsynctime_sum[1m]) > 100 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} fsync time is too long" description: "{{ $labels.instance }} of job {{$labels.job}} fsync time is too long: [{{ $value }}]." - alert: take snapshot time is too long expr: rate(snapshottime_sum[5m]) > 100 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} take snapshot time is too long" description: "{{ $labels.instance }} of job {{$labels.job}} take snapshot time is too long: [{{ $value }}]." - alert: avg latency is too high expr: avg_latency > 100 for: 1m labels: severity: warning annotations: summary: "Instance {{ $labels.instance }} avg latency is too high" description: "{{ $labels.instance }} of job {{$labels.job}} avg latency is too high: [{{ $value }}]." - alert: JvmMemoryFillingUp expr: jvm_memory_bytes_used / jvm_memory_bytes_max{area="heap"} > 0.8 for: 5m labels: severity: warning annotations: summary: "JVM memory filling up (instance {{ $labels.instance }})" description: "JVM memory is filling up (> 80%)\n labels: {{ $labels }} value = {{ $value }}\n"
grafana图表 https://grafana.com/grafana/dashboards/10465-zookeeper-by-prometheus/

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