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rgaudin edited this page Feb 3, 2025 · 2 revisions

Kathrin Disk Setup

Disk Temperature Monitoring

node_exporter

  • Download node_exporter and move binary to /usr/sbin/
  • Add username and Group useradd -M -U node_exporter -s /bin/nologin
  • Change ownership of binary chown node_exporter:node_exporter /usr/sbin/node_exporter
  • Make sure its executable chmod +x /usr/sbin/node_exporter
  • Create data folder mkdir -p /var/lib/node_exporter/textfile_collector
  • Change data folder perms chown -R node_exporter:node_exporter /var/lib/node_exporter/textfile_collector
  • Add systemd service /etc/systemd/system/node_exporter.service 
[Unit]
Description=Node Exporter
Requires=node_exporter.socket

[Service]
User=node_exporter
ExecStart=/usr/sbin/node_exporter --web.systemd-socket --collector.textfile.directory=/var/lib/node_exporter/textfile_collector

[Install]
WantedBy=multi-user.target
  • Add systemd socket /etc/systemd/system/node_exporter.socket 
[Unit]
Description=Node Exporter

[Socket]
ListenStream=9100

[Install]
WantedBy=sockets.target
  • Reload systemd systemctl daemon-reload
  • Enable and Start it systemctl enable --now node_exporter.service && systemctl enable --now node_exporter.socket

S.M.A.R.T-disk-monitoring-for-Prometheus

  • Install jq: apt install jq
  • Download smartmon.sh script curl -L -O /usr/local/bin/smartmon.sh https://raw.githubusercontent.com/micha37-martins/S.M.A.R.T-disk-monitoring-for-Prometheus/refs/heads/master/src/smartmon.sh
  • Make it executable chmod +x /usr/local/bin/smartmon.sh
  • Install is as a systemd cron curl -L https://raw.githubusercontent.com/micha37-martins/S.M.A.R.T-disk-monitoring-for-Prometheus/refs/heads/master/install.sh | sh

prometheus

  • Download Prometheus and move binaries to /usr/sbin/
  • Add username and Group useradd -M -U prometheus -s /bin/nologin
  • Change ownership of binaries chown prometheus:prometheus /usr/sbin/{promtool,prometheus}
  • Make sure its executable chmod +x /usr/sbin/{promtool,prometheus}
  • Create data folder mkdir -p /var/lib/prometheus/data
  • Change data folder perms chown -R prometheus:prometheus /var/lib/prometheus/data
  • Add /etc/prometheus.yml 
global:
  scrape_interval: 60s

scrape_configs:
  - job_name: node
    static_configs:
      - targets: ['localhost:9100']
        labels:
          instance: kathrin.kiwix.org

remote_write:
  - url: 'https://prometheus-prod-24-prod-eu-west-2.grafana.net/api/prom/push'
    basic_auth:
      username: '1172000'
      password: 'glc_xxxxxxxxxxxxxxxxxxxxxxx'

The password here must be obtained from Grafana Cloud Add new Connection wizard. You should select Hosted Prometheus Metrics. In the Set the configuration section, choose Create a new token and one will be created (in Cloud Access Policies) and showed to you with the proper encoding (starts with glc_. Just copy that part.

  • Add /etc/systemd/system/prometheus.service 
[Unit]
Description=Prometheus Server
Documentation=https://prometheus.io/docs/introduction/overview/
After=network-online.target

[Service]
User=prometheus
Group=prometheus
Restart=on-failure
ExecStart=/usr/sbin/prometheus \
  --config.file=/etc/prometheus.yml \
  --storage.tsdb.path=/var/lib/prometheus/data \
  --storage.tsdb.retention.time=30d

[Install]
WantedBy=multi-user.target
  • Reload systemd systemctl daemon-reload
  • Enable and Start it systemctl enable --now prometheus.service

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