Consul是什么
Consul是一个服务管理软件。支持多数据中心下，分布式高可用的，服务发现和配置共享。用来保证服务的高可用，（本文章搭建一个单节点consul环境与prometheus环境实现自动注册功能）；
二进制包安装,安装方法：
环境准备
1:下载安装包，最新版本根据官方为准；（consul官方下载地址：https://releases.hashicorp.com/consul）
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cd /usr/local/
wget https://releases.hashicorp.com/consul/0.8.1/consul_0.8.1_linux_amd64.zip
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2:解压缩 consul_0.8.1_linux_amd64.zip
| unzip consul_0.8.1_linux_amd64.zip && mv consul_0.8.1_linux_amd64 consul |
3：启动consul服务器
| ./consul agent -dev -client 0.0.0.0 -ui |
4：prometheus与consul结合实现自动发现配置
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# grep -v "^#" prometheus.yml
global:
scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
# scrape_timeout is set to the global default (10s).
remote_write:
- url: "http://192.168.152.137:9201/write"
remote_read:
- url: "http://192.168.152.137:9201/read"
alerting:
alertmanagers:
- static_configs:
- targets: ['192.168.152.137:9093']
# - ['localhost:9093']
rule_files:
- "/opt/prometheus-2.15.1.linux-amd64/rules/cpu_usage.yml"
- "/opt/prometheus-2.15.1.linux-amd64/rules/disk.yml"
- "/etc/prometheus/promgen.rule.yml"
scrape_configs:
# The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
- job_name: 'prometheus'
# metrics_path defaults to '/metrics'
# scheme defaults to 'http'.
static_configs:
- targets: ['localhost:9090','192.168.152.180:9100','192.168.152.114:9100','192.168.151.41:9100','192.168.152.106:9100']
- job_name: 'consul' #prometheus与consul配置段
consul_sd_configs:
- server: '192.168.152.186:8500'
services: [ ]
- job_name: 'ping'
scrape_interval: 1m
metrics_path: /probe
params:
module: [icmp]
static_configs:
- targets: ['192.168.152.106','192.168.152.114']
labels:
type: '虚拟机'
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.152.133:9115
- job_name: pushgateway
static_configs:
- targets: ['192.168.152.133:9091']
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客户端通过HTTP API注册服务
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注册服务：curl -X PUT -d '{"id": "node-exporter","name": "node-exporter-192.168.152.106","address": "192.168.152.106","port": 9100,"tags": ["test"],"checks": [{"http": "http://192.168.152.106:9100/metrics", "interval": "5s"}]}' http://192.168.152.186:8500/v1/agent/service/register
注销服务：curl -X PUT http://192.168.152.186:8500/v1/agent/service/deregister/node-exporter
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通过页面查看是否注册成功
| http://192.168.152.137:9090/targets |
