Removed last smaller h3 node

Removed small HP 1U server h3dn3 from hadoop3 service.

Removed smaller h3 nodes

Working towards simplifying the hardware within our hadoop3 cluster, two h3dn nodes have been removed from monitoring.

Removed grunts

Removed hadoop 0.20 grunts as their commonly full diskspace status meant consistent alerting.

More hosts added

Many more hosts have been added in this release, and added to the relevant service dashboards.

DC2023 dashboard gluster space

As we've remembered to use gluster for the DC2023 crawler, added visualisation of this volume to dc2023 dashboard.

stat-pushing and rr_log alerting

Now configured with same stat-pusher settings for all environs, dev, beta and prod.
rr_log alert now doesn't fire if there's no field value known.

Domain Crawl 2023 monitoring

As the 10th anniversary domain crawl starts today, our monitoring has been updated to track progress.

ldl-pusher as service

Minor addition of systemctl wrapper for ldl-pusher service.

Run h3exporter as systemctl service

To run h3exporter as a systemctl service, no user or session information should be assumed. Thus, changed relative paths to absolute.

Hadoop3 status reporting

Added Hadoop3 scrapper and updated monitoring for WA Hadoop3 usage, dead nodes, and under-replicated blocks.