Prometheus基於Consul的服務發現

生產環境部署

上面介紹了consul原理和單點、集群部署方法，下面重點講下在生產環境中怎麼部署以及和Prometheus集成。

由於生產環境中採用的是docker-compose編排部署，直接看編排文件

<code>  consul-node1:
    image: bitnami/consul
    environment:
      - 
CONSUL
_BOOTSTRAP_
EXPECT=3
      - 
CONSUL
_CLIENT_
LAN_ADDRESS=0.0.0.0
      - 
CONSUL
_DISABLE_
KEYRING_FILE=true
      - 
CONSUL
_RETRY_
JOIN_ADDRESS=consul-node1
    ports:
      - 
'8300:8300'
      - 
'8301:8301'
      - 
'8301:8301/udp'
      - 
'8500:8500'
      - 
'8600:8600'
      - 
'8600:8600/udp'
    volumes:
      - 
'./consul-node1_data:/bitnami'

  consul-node2:
    image: bitnami/consul
    environment:
      - 
CONSUL
_BOOTSTRAP_
EXPECT=3
      - 
CONSUL
_CLIENT_
LAN_ADDRESS=0.0.0.0
      - 
CONSUL
_DISABLE_
KEYRING_FILE=true
      - 
CONSUL
_RETRY_
JOIN_ADDRESS=consul-node1
      - 
CONSUL
_ENABLE_
UI=false
    volumes:
      - 
'./consul-node2_data:/bitnami'

  consul-node3:
    image: bitnami/consul
    environment:
      - 
CONSUL
_BOOTSTRAP_
EXPECT=3
      - 
CONSUL
_CLIENT_
LAN_ADDRESS=0.0.0.0
      - 
CONSUL
_DISABLE_
KEYRING_FILE=true
      - 
CONSUL
_RETRY_
JOIN_ADDRESS=consul-node1
      - 
CONSUL
_ENABLE_
UI=false
    volumes:
      - 
'./consul-node3_data:/bitnami'/<code>

依次啟動consul-node1、consul-node2、consul-node3

<code>$ docker-compose up -d consul-node1
$ docker-compose up -d consul-node2
$ docker-compose up -d consul-node3/<code>

打開控制檯
https://xxxx.addnewer.com/，默認端口是8500，我這裡用nginx做了代理，這裡也通過api註冊了兩臺集群

api註冊語句示例

<code>$ curl -X PUT -d '{
"id"
: 
"bj-ali-ops-bastion-0-1"
,
"name"
: 
"gp-ops-ops"
,
"address"
: 
"192.168.0.1"
,
"port"
: 
9100
,
"tags"
: [
"prod"
],
"checks"
: [{
"http"
: 
"http://192.168.0.1:9100/"
,
"interval"
: 
"5s"
}]}'     http: 

$ curl -X PUT -d '{
"id"
: 
"bj-ali-ops-ansible-15-54"
,
"name"
: 
"gp-ops-ops"
,
"address"
: 
"192.168.15.54"
,
"port"
: 
9100
,
"tags"
: [
"prod"
],
"checks"
: [{
"http"
: 
"http://192.168.15.54:9100/"
,
"interval"
: 
"5s"
}]}'     http:/<code>

• name: 定義了這兩臺集群所屬的業務分組
• tags: 定義標籤

consul集成prometheus

<code>
$
 
cat
 
prometheus/prometheus.yml
 
-
 
job_name:
 
'node_exporter'
  
scrape_interval:
 
5s
  
scheme:
 
http
  
consul_sd_configs:
    
-
 
server:
 
consul-node1:8500
      
services:
 
[]
  
relabel_configs:
    
-
 
source_labels:
 
[__meta_consul_tags]
      
regex:
 
.*prod.*
      
action:
 
keep
/<code>

• regex: .*prod.* 就是過濾上面api註冊時候打的標籤tags

從新加載promentheus配置文件，就可以用看到獲取的信息