centos安装prometheus、alertmanager、grafana

一开始搞的prometheus operator是一键式部署的，部署确实简单了，但是管理使用起来就不方便就没再用。

后来搞prometheus监控，只在centos7安装prometheus，使用的监控进程服务，监控mysql，监控docker容器。完事后使用grafana在网页显示，使用alertmanager进行报警，功能都算实现了。

再后来监控kubernetes，发现prometheus想要监控k8s集群就必须在k8s集群中部署一个prometheus，然后就在集群中部署了一个prometheus，以及node_exporter、kube-state-metrics分别用来监控集群的node节点主机信息和pod、node状态等。。。

进入正题。。

相对于k8s部署,使用centos安装prometheus就属于入门级别的。k8s部署prometheus详细篇在我另一篇文章（感觉还是k8s部署比较方便使用）

 

一.centos7安装prometheus

有关prometheus组件的下载地址：https://prometheus.io/download/

1.1网页下载  prometheus-2.13.0.linux-amd64.tar.gz  或者

wget -c https://github.com/prometheus/prometheus/releases/download/v2.13.0/prometheus-2.13.0.linux-amd64.tar.gz

1.2网页下载  node_exporter-0.18.1.linux-amd64.tar.gz  或者

wget -c https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.g

1.3网页下载 process-exporter-0.5.0.linux-amd64.tar.gz

wget -c https://github.com/ncabatoff/process-exporter/releases/download/v0.5.0/process-exporter-0.5.0.linux-amd64.tar.gz

1.4网页下载 alertmanager-0.19.0.linux-amd64.tar.gz

wget https://github.com/prometheus/alertmanager/releases/download/v0.19.0/alertmanager-0.19.0.linux-amd64.tar.gz

1.5网页下载 grafana-6.4.1.linux-amd64.tar.gz

wget https://dl.grafana.com/oss/release/grafana-6.4.1.linux-amd64.tar.gz

2.解压 

先在/opt/目录下创建prometheus、node_exporter 、process_exporter、alertmanager、grafana

mkdir -p /opt//prometheus
mkdir -p /opt/node_exporter
mkdir -p /opt/process_exporter
mkdir -p /opt/alertmanager
mkdir -p /opt/grafana
tar zxf /opt/prometheus-2.13.0.linux-amd64.tar.gz -C /opt/prometheus --strip-components=1
tar zxf /opt/node_exporter-0.18.1.linux-amd64.tar.gz -C /opt/node_exporter --strip-components=1
tar zxf /opt/process-exporter-0.5.0.linux-amd64.tar.gz -C /opt/process_exporter --strip-components=1
tar zxf /opt/alertmanager-0.19.0.linux-amd64.tar.gz -C /opt/alertmanager --strip-components=1
tar zxf /opt/grafana-6.4.1.linux-amd64.tar.gz -C /opt/grafana --strip-components=1

3.配置 

vim /opt/prometheus/prometheus.yml

global:
  scrape_interval:
  evaluation_interval: 15s
alerting:
  alertmanagers:
  - static_configs:
    - targets: ['192.168.1.131:9093']
rule_files:
  - "rules.yml"
scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['192.168.1.131:9090']

  - job_name: 'node_exporter'
    static_configs:
    - targets: ['192.168.1.131:9100']

  - job_name: 'process'
    static_configs:
    - targets: ['192.168.1.131:9256']

vim /opt/prometheus/rules.yml   （查看更多的主机监控规则）

groups:
- name: 监控进程
  rules:
  - alert: docker_status
    expr: namedprocess_namegroup_num_procs{groupname="map[:dockerd]"job="process"} == 0
    for: 30s
    labels:
      area: A
    annotations:
      summary: "docker进程服务 {{ $labels.instance }} 挂了"
- name: 主机状态-监控告警
  rules:
  - alert: 主机状态
    expr: up == 0
    for: 1m
    labels:
      status: 非常严重
    annotations:
      summary: "{{$labels.instance}}:服务器宕机"
      description: "{{$labels.instance}}:服务器延时超过5分钟"

vim /opt/alertmanager/alertmanager.yml

global:
  resolve_timeout: 5m
  smtp_smarthost: 'smtp.exmail.qq.com:465' # 邮箱smtp服务器代理
  smtp_from:  '[email protected]' # 发送邮箱名称
  smtp_auth_username: '[email protected]' # 邮箱名称
  smtp_auth_password:  'Caitong12316' # 邮箱密码或授权码
  smtp_require_tls: false

route:
  group_by: ['alertname'] # 报警分组依据
  group_wait: 30s # 最初即第一次等待多久时间发送一组警报的通知
  group_interval: 5m # 在发送新警报前的等待时间
  repeat_interval: 2h # 发送重复警报的周期
  receiver: email

receivers:
- name: 'email' # 警报
  email_configs: # 邮箱配置
  - to: '[email protected]'  # 接收警报的email配置
    headers: { Subject: "[WARN] 报警邮件"} # 接收邮件的标题

vim /opt/process_exporter/process_conf.yml

process_names:
  - name: "{{.Matches}}"
    cmdline:
    - 'dockerd'

4.启动命令

# 后台运行node_exporter

nohup /opt/node_exporter/node_exporter  > /opt/node_exporter/node_exporter.stdout 2>&1 &

# 后台运行prometheus

nohup  /opt/prometheus/prometheus >  /opt/prometheus/prometheus.stdout  2>&1 &

# 后台运行process-exporter

nohup /opt/process-exporter/process-exporter -config.path process-conf.yaml > /opt/process-exporter/process-exporter.stdout 2>&1 &

# 后台运行alertmanager

nohup /opt/alertmanager/alertmanager --config.file="alertmanager.yml" > /opt/alertmanager/alertmanager.stdout 2>&1 &

# 后台运行grafana 
nohup /usr/local/services/grafana/bin/grafana-server > /usr/local/services/grafana/grafana.stdout  2>&1 &

5. 访问：

http://192.168.1.131:9090

http://192.168.1.131:3000   (admin/admin)