[Imported from Trac: page Munin_local_plugins_README, version 1]
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Munin_local_plugins_README.md
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Munin_local_plugins_README.md
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(Draft)<br>
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It's the README file for munin local plugins<br>
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Please see ticket #966
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================================
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# Tahoe-LAFS local plugins
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1. Overview
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2. Plugins details
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3. Obselete plugins
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4. Plugins testing
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## Overview
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> Those plugins are used with Tahoe-LAFS that not use a stats-gateherer.
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> Some plugins use json url and some other need local access to storage directory.
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> For plugins configuration please read each plugins and tahoe-conf
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## Plugins details
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> tahoe_files: Shows the number of files hosted by this node's [StorageServer](StorageServer).
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> tahoe_diskfelt: Shows of how much free space is left on all disks across the grid.
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> tahoe_diskusage: Shows the estimated disk usage per unit time, totalled across all storage servers.
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> tahoe_diskused: Shows the total amount of disk space used across the grid
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> tahoe_disktotal: Shows the total amount of disk space present in the grid, and how much of it is currently being used.
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> tahoe_doomsday: Shows the estimated number of days left until storage space is exhausted.
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> tahoe_introstats: Shows the number of hosts announcing and subscribing to various services
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> tahoe_nodememory: Shows the memory used by specific processes
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> tahoe_helperstats_active: Shows the number of files being actively processed by the helper
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> tahoe_helperstats_fetched: Shows the amount of data being fetched by the helper
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> tahoe_server_latency_: Shows the latency statistic for a given operation and percentile from a set of storage servers.
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> tahoe_server_operations_: Shows operations-per-second from a set of storage servers.
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> tahoe_storagespace: Shows the space consumed by severs nodes
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> tahoe_estimate_files: Shows the estimated number of files and directories present in the grid
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## Obsolete plugins
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> Those munin plugins are deeply obsolete, because they depended upon the DB that managed customer accounts at allmydata.com.
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> to use this script, you will need some source of 'tahoe deep-size' results for all rootcaps that reference data in your grid.
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> This tool was written for the allmydata.com environment, which maintained such a value.
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> tahoe_overhead: Shows the estimated amount of storage overhead (ratio of actual disk usage to ideal disk usage).
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> tahoe_spacetime: Shows the estimated number of days left until storage space is exhausted
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> tahoe_rootdir_space: Shows the amount of space consumed by all files reachable from a given directory
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## Plugins testing
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> To test plugin you can run: munin-run 'plugin file'
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> For example:
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# munin-run tahoe_stats_storage_disk_used
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RM1X_gfsd.value 28093239296
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[..]
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> To display graph configuration add 'config' at the end of command line:
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#munin-run tahoe_stats_storage_disk_used config
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graph_title Tahoe-LAFS Storage Server Disk Used
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graph_vlabel bytes
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graph_category Tahoe-LAFS Stats-Gatherer_storage_server
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graph_info This graph shows disk usage for Tahoe
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graph_args --base 1024
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RM1X_gfsd.label RM1X_gfsd
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RM1X_gfsd.draw LINE1
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[..]
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