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 emc_vnx_file_stats - Plugin to monitor Basic, NFSv3 and NFSv4 statistics of 
 EMC VNX 5300 Unified Storage system's Datamovers


 Evgeny Beysembaev <>




  #%# family=auto
  #%# capabilities=autoconf suggest


 The plugin monitors basic statistics of EMC Unified Storage system Datamovers 
 and NFS statistics of EMC VNX5300 Unified Storage system. Probably it can 
 also be compatible with other Isilon or Celerra systems. It uses SSH to connect
 to Control Stations, then remotely executes '/nas/sbin/server_stats' and 
 fetches and parses data from it. It supports gathering data both from 
 active/active and active/passive Datamover configurations, ignoring offline or 
 standby Datamovers. 
 If all Datamovers are offline or absent, the plugin returns error.
 This plugin also automatically chooses Primary Control Station from the list by
  calling '/nasmcd/sbin/getreason' and '/nasmcd/sbin/t2slot'.
 At the moment data is gathered from the following statistics sources:
  * nfs.v3.op - Tons of timings about NFSv3 RPC calls
  * nfs.v4.op - Tons of timings about NFSv4 RPC calls
  * nfs.client - Here new Client addresses are rescanned and added automatically.
  * basic-std Statistics Group - Basic Statistics of Datamovers (eg. CPU, Memory
 It's quite easy to comment out unneeded data to make graphs less overloaded or
 to add new statistics sources.

 The plugin has been tested in the following Operating Environment (OE):
  File Version T7.1.76.4
  Block Revision


 These are Basic Datamover Graphs.
 Graph category CPU:
        EMC VNX 5300 Datamover CPU Util %
 Graph category Network:
        EMC VNX 5300 Datamover Network bytes over all interfaces
        EMC VNX 5300 Datamover Storage bytes over all interfaces
 Graph category Memory:
        EMC VNX 5300 Datamover Memory
        EMC VNX 5300 File Buffer Cache
        EMC VNX 5300 FileResolve

 These are NFS (v3,v4) Graphs.
 Graph category FS:
        EMC VNX 5300 NFSv3 Calls per second
        EMC VNX 5300 NFSv3 uSeconds per call
        EMC VNX 5300 NFSv3 Op %
        EMC VNX 5300 NFSv4 Calls per second
        EMC VNX 5300 NFSv4 uSeconds per call
        EMC VNX 5300 NFSv4 Op %
        EMC VNX 5300 NFS Client Ops/s
        EMC VNX 5300 NFS Client B/s
        EMC VNX 5300 NFS Client Avg uSec/call
        EMC VNX 5300 Std NFS Ops/s
        EMC VNX 5300 Std NFS B/s
        EMC VNX 5300 Std NFS Average Size Bytes
        EMC VNX 5300 Std NFS Active Threads


 The plugin has been written for being compatible with EMC VNX5300 Storage 
 system, as this is the only EMC storage which i have.
 By the way, i am pretty sure it can also work with other VNX1 storages, like
 VNX5100 and VNX5500.
 About VNX2 series, i don't know whether the plugin will be able to work with 
 them. Maybe it would need some corrections in command-line backend. The same
 situation is with other EMC systems, so i encourage you to try and fix the 


 The plugin uses SSH to connect to Control Stations. It's possible to use 
 'nasadmin' user, but it would be better if you create read-only global user by
 Unisphere Client. The user should have only Operator role.
 I created "operator" user but due to the fact that Control Stations already
 had one internal "operator" user, the new one was called "operator1". So be 
 careful. After that, copy .bash_profile from /home/nasadmin to a newly created
 On munin-node side choose a user which will be used to connect through SSH.
 Generally user "munin" is ok. Then, execute "sudo su munin -s /bin/bash", 
 "ssh-keygen" and "ssh-copy-id" to both Control Stations with newly created 
 Make a link from /usr/share/munin/plugins/emc_vnx_file_stats to 
 /etc/munin/plugins/. If you want to get NFS statistics, name the link as 
 "emc_vnx_file_nfs_stats_<NAME>", otherwise to get Basic Datamover statistics
 you have to name it "emc_vnx_file_basicdm_stats_<NAME>", where <NAME> is any
 arbitrary name of your storage system. The plugin will return <NAME> in its 
 answer as "host_name" field.

 For example, assume your storage system is called "VNX5300".
 Make a configuration file at 
 user munin                             
 env.username operator1                         
 env.nas_servers server_2 server_3              

 user - SSH Client local user
 env.username - Remote user with Operator role
 env.cs_addr - Control Stations addresses
 env.nas_servers - This is the default value and can be omitted


 08.11.2016 - First Release
 17.11.2016 - NFSv4 support, Memory section
 16.12.2016 - Merged "NFS" and "Datamover Stats" plugins
 26.12.2016 - Compatibility with Munin coding style