Truenas

Getting Data into Grafana

1. On Truenas Scale

   • Following exporters can be installed on truenas scale host:
     • prometheus-libvirt-exporter (Default port 9177)
     • prometheus-node-exporter (Default port 9100)
     • prometheus-node-exporter-collector
   • Disable default filesystem metrics from node-exporter by editing /etc/default/prometheus-node-exporter
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     ARGS="--no-collector.filesystem"

   • add Zfs Zpool script to /usr/share/prometheus-node-exporter-collectors and make it executable
   • Create systemd files for data collections
     • /lib/systemd/system/prometheus-node-exporter-zfs.service
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       [Unit]
       Description=Collect ZFS Zpool metrics for prometheus-node-exporter
       
       [Service]
       Type=oneshot
       Environment=TMPDIR=/var/lib/prometheus/node-exporter
       ExecStart=/bin/bash -c "/usr/share/prometheus-node-exporter-collectors/zfs_zpool.sh | sponge /var/lib/prometheus/node-exporter/zfs_zpool.prom"

     • /lib/systemd/system/prometheus-node-exporter-zfs.timer
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       [Unit]
       Description=Run ZFS metrics collection every 15 minutes
       ConditionPathExists=/usr/sbin/zfs
       ConditionPathExists=/usr/sbin/zpool
       
       [Timer]
       OnBootSec=0
       OnUnitActiveSec=15min
       
       [Install]
       WantedBy=timers.target

2. On the Prometheus Node:

   • Add Scrape Config to Prometheus
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         - job_name: truenas
           static_configs:
           - targets: 
               - <Truenas-scale IP/fqdn>:9100
               - <Truenas-scale IP/fqdn>:9177