Splunk search for Disk usage by Splunk server
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| rest /services/server/status/partitions-space | eval diskFree=tostring(round(free/capacity,4)*100)."%", capacityGB=round(capacity/1024,2), freeGB=round(free/2014,2) | table splunk_server, mount_point, freeGB, capacityGB, diskFree | rename splunk_server as "Splunk Server", mount_point as "Mount Point", diskFree as "Disk Free (%)", freeGB as "Disk Free (GB)", capacityGB as "Capacity (GB)"
This search will show disk free space for each Splunk server
