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Fix issue 674:
Add new dashboard to monitor the health of elasticsearch:
Alert List Panel:
This panel provides an overview of current alerts, specifically those in the "alerting" state, with a maximum of 10 alerts displayed.
Elasticsearch Disk Space Utilization Panel:
Monitors the percentage of disk space used in the Elasticsearch cluster (es-wis2box).
Alerts trigger if disk usage exceeds 90%, with thresholds visually represented by color codes (green, yellow, dark red).
Elasticsearch Available Disk Space Panel:
Displays the total amount of free disk space across all nodes in the cluster.
Alerts trigger if available disk space drops below 10 GB, with similar color-coded thresholds.
Alerting Configuration:
High Storage Usage Alert:
Triggers when disk space usage exceeds 90% for more than 5 minutes.
Configured to send notifications to a specified channel or recipient.
Low Free Disk Space Alert:
Activates if the free disk space falls below 10 GB for more than 5 minutes.
The alert also uses a threshold-based color system to visually indicate critical conditions.