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sw:prometheus:intro [2022/01/11 10:43] – Frank Fegertsw:prometheus:intro [2022/01/11 11:20] (current) – Frank Fegert
Line 64: Line 64:
 root@host:~$ apt-get update root@host:~$ apt-get update
 root@host:~$ apt-get install prometheus root@host:~$ apt-get install prometheus
 +</cli>
 +
 +Create the //Prometheus// ''rsyslog'' configuration files:
 +
 +<cli>
 +root@host:~$ vi /etc/rsyslog.d/prometheus.conf
 +</cli>
 +
 +File contents:
 +
 +<file config /etc/rsyslog.d/prometheus.conf>
 +template(name="PROMETHEUS_TEMPLATE" type="string" string="/var/log/prometheus/%programname%.log")
 +if ($programname startswith 'prometheus') then {
 +   action(
 +        type="omfile"
 +        dynaFile="PROMETHEUS_TEMPLATE"
 +        fileCreateMode="0640"
 +        fileOwner="prometheus"
 +        fileGroup="prometheus"
 +        dirCreateMode="0750"
 +        dirOwner="prometheus"
 +        dirGroup="prometheus"
 +        ioBufferSize="64k"
 +    )
 +   stop
 +}
 +</file>
 +
 +Restart the ''rsyslog'' daemon:
 +
 +<cli>
 +root@host:~$ systemctl restart rsyslog.service
 </cli> </cli>
  
Line 87: Line 119:
  
 ====== Configuration ====== ====== Configuration ======
 +
 +===== Initial =====
  
 Configure the //Prometheus// data directory: Configure the //Prometheus// data directory:
  
 <cli> <cli>
-root@host:~$ vi //etc/prometheus/prometheus.yml+root@host:~$ vi /etc/default/prometheus 
 +</cli> 
 + 
 +File contents: 
 + 
 +<file config /etc/default/prometheus> 
 +[...] 
 +ARGS="--storage.tsdb.path='/srv/prometheus/metrics2/'" 
 +[...] 
 +</file> 
 + 
 +===== Adding Prometheus to Grafana ===== 
 + 
 +See [[sw:grafana:intro#adding_prometheus_to_grafana|Adding Prometheus to Grafana]] 
 + 
 +===== Scraping metrics with Prometheus ===== 
 + 
 +Configure //Prometheus// to //scrape// metrics from various sources: 
 + 
 +==== Loki ==== 
 + 
 +<cli> 
 +root@host:~$ vi /etc/prometheus/prometheus.yml 
 +</cli> 
 + 
 +File contents: 
 + 
 +<file config /etc/prometheus/prometheus.yml> 
 +[...] 
 +scrape_configs: 
 +  [...] 
 +  - job_name: loki 
 +    static_configs: 
 +      - targets: ['localhost:3100'] 
 +  [...] 
 +[...] 
 +</file> 
 + 
 + 
 +==== Promtail ==== 
 + 
 +<cli> 
 +root@host:~$ vi /etc/prometheus/prometheus.yml
 </cli> </cli>
  
Line 98: Line 174:
 <file config /etc/prometheus/prometheus.yml> <file config /etc/prometheus/prometheus.yml>
 [...] [...]
-storage: +scrape_configs: 
-  tsdb: +  [...] 
-    path: /srv/prometheus/metrics2/+  - job_name: promtail 
 +    static_configs: 
 +      - targets: ['localhost:9080'] 
 +  [...]
 [...] [...]
 </file> </file>

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sw/prometheus/intro.1641897803.txt.gz · Last modified: 2022/01/11 10:43 by Frank Fegert
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