HDDS-15336 Dashboard for OM Performance overview

[yandrey321]

What changes were proposed in this pull request?

Created Ozone OM Overview' dashboard with the following sections

JVM

• JVM CPU load
• Heap — used / committed / max
• Non-heap (native / metaspace) — used / committed / max
• GC time (fraction of wall per minute)
• GC count rate
• Netty direct memory — used / max
• Thread count
• Jetty http server threads

Operations

• Aggregate tiers — rate
• Aggregate tiers — latency
• Volume mutations & listings — rate
• Volume mutations & listings — latency
• Buckets & layouts — rate
• Buckets & layouts — latency
• Keys, commits & block alloc — rate
• Keys, commits & block alloc — latency
• FS/OFS primitives — rate
• FS/OFS primitives — latency

Deleting Service Metrics

• Deletion pipeline
• Per-iteration OM deletion service timings (milliseconds)

OM Ratis

• Ratis Operations rate
• Ratis Operations latency

HA

• OM HA leader state (1 = leader, 0 = follower)

Storage Utilization

• Total logical used bytes across all buckets (instantaneous sum)
• Top 10 volumes by summed bucket-used bytes

RPC handlers

• RPC rates
• RPC latency

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-15336

How was this patch tested?

Import to Grafana and connect to the data source.