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Add a collector for NFS client statistics.

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This change adds a new collector called "nfs" that parses the contents
of /proc/net/rpc/nfs and turns it into metrics. It can be used to
inspect the number of operations per type, but also to keep an eye on an
extraneous number of retransmissions, which may indicate connectivity
issues.

I've picked the name "nfs", as most operating systems use "nfs" for the
client component and "nfsd" as the server component. If we want to add
stats for the NFS server as well, we'd better call such a collector
"nfsd".
This commit is contained in:
Ed Schouten 2016-11-29 14:32:52 +01:00 • committed by Ed Schouten
commit a696830c38
5 changed files with 289 additions and 0 deletions
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106
collector/fixtures/e2e-output.txt
View file

@ -1743,6 +1743,112 @@ node_nf_conntrack_entries 123
# HELP node_nf_conntrack_entries_limit Maximum size of connection tracking table.
# TYPE node_nf_conntrack_entries_limit gauge
node_nf_conntrack_entries_limit 65536
# HELP node_nfs_net_connections Number of connections at the network layer.
# TYPE node_nfs_net_connections counter
node_nfs_net_connections{protocol="tcp"} 45
# HELP node_nfs_net_reads Number of reads at the network layer.
# TYPE node_nfs_net_reads counter
node_nfs_net_reads{protocol="tcp"} 69
node_nfs_net_reads{protocol="udp"} 70
# HELP node_nfs_procedures Number of NFS procedures invoked.
# TYPE node_nfs_procedures counter
node_nfs_procedures{procedure="access",version="3"} 1.17661341e+08
node_nfs_procedures{procedure="access",version="4"} 58
node_nfs_procedures{procedure="close",version="4"} 28
node_nfs_procedures{procedure="commit",version="3"} 23729
node_nfs_procedures{procedure="commit",version="4"} 83
node_nfs_procedures{procedure="create",version="2"} 52
node_nfs_procedures{procedure="create",version="3"} 2.993289e+06
node_nfs_procedures{procedure="create",version="4"} 15
node_nfs_procedures{procedure="create_session",version="4"} 32
node_nfs_procedures{procedure="delegreturn",version="4"} 97
node_nfs_procedures{procedure="destroy_session",version="4"} 67
node_nfs_procedures{procedure="exchange_id",version="4"} 58
node_nfs_procedures{procedure="fs_locations",version="4"} 32
node_nfs_procedures{procedure="fsid_present",version="4"} 11
node_nfs_procedures{procedure="fsinfo",version="3"} 2
node_nfs_procedures{procedure="fsinfo",version="4"} 68
node_nfs_procedures{procedure="fsstat",version="3"} 13332
node_nfs_procedures{procedure="get_lease_time",version="4"} 28
node_nfs_procedures{procedure="getacl",version="4"} 36
node_nfs_procedures{procedure="getattr",version="2"} 57
node_nfs_procedures{procedure="getattr",version="3"} 1.061909262e+09
node_nfs_procedures{procedure="getattr",version="4"} 88
node_nfs_procedures{procedure="getdeviceinfo",version="4"} 1
node_nfs_procedures{procedure="layoutcommit",version="4"} 26
node_nfs_procedures{procedure="layoutget",version="4"} 90
node_nfs_procedures{procedure="layoutreturn",version="4"} 0
node_nfs_procedures{procedure="link",version="2"} 17
node_nfs_procedures{procedure="link",version="3"} 0
node_nfs_procedures{procedure="link",version="4"} 21
node_nfs_procedures{procedure="lock",version="4"} 39
node_nfs_procedures{procedure="lockt",version="4"} 68
node_nfs_procedures{procedure="locku",version="4"} 59
node_nfs_procedures{procedure="lookup",version="2"} 71
node_nfs_procedures{procedure="lookup",version="3"} 4.077635e+06
node_nfs_procedures{procedure="lookup",version="4"} 29
node_nfs_procedures{procedure="lookup_root",version="4"} 74
node_nfs_procedures{procedure="mkdir",version="2"} 50
node_nfs_procedures{procedure="mkdir",version="3"} 590
node_nfs_procedures{procedure="mknod",version="3"} 0
node_nfs_procedures{procedure="null",version="2"} 16
node_nfs_procedures{procedure="null",version="3"} 0
node_nfs_procedures{procedure="null",version="4"} 98
node_nfs_procedures{procedure="open",version="4"} 85
node_nfs_procedures{procedure="open_confirm",version="4"} 23
node_nfs_procedures{procedure="open_downgrade",version="4"} 1
node_nfs_procedures{procedure="open_noattr",version="4"} 24
node_nfs_procedures{procedure="pathconf",version="3"} 1
node_nfs_procedures{procedure="pathconf",version="4"} 53
node_nfs_procedures{procedure="read",version="2"} 45
node_nfs_procedures{procedure="read",version="3"} 2.9391916e+07
node_nfs_procedures{procedure="read",version="4"} 51
node_nfs_procedures{procedure="readdir",version="2"} 70
node_nfs_procedures{procedure="readdir",version="3"} 3983
node_nfs_procedures{procedure="readdir",version="4"} 66
node_nfs_procedures{procedure="readdirplus",version="3"} 92385
node_nfs_procedures{procedure="readlink",version="2"} 73
node_nfs_procedures{procedure="readlink",version="3"} 5
node_nfs_procedures{procedure="readlink",version="4"} 54
node_nfs_procedures{procedure="reclaim_complete",version="4"} 35
node_nfs_procedures{procedure="release_lockowner",version="4"} 85
node_nfs_procedures{procedure="remove",version="2"} 83
node_nfs_procedures{procedure="remove",version="3"} 7815
node_nfs_procedures{procedure="remove",version="4"} 69
node_nfs_procedures{procedure="rename",version="2"} 61
node_nfs_procedures{procedure="rename",version="3"} 1130
node_nfs_procedures{procedure="rename",version="4"} 96
node_nfs_procedures{procedure="renew",version="4"} 83
node_nfs_procedures{procedure="rmdir",version="2"} 23
node_nfs_procedures{procedure="rmdir",version="3"} 15
node_nfs_procedures{procedure="root",version="2"} 52
node_nfs_procedures{procedure="secinfo",version="4"} 81
node_nfs_procedures{procedure="sequence",version="4"} 13
node_nfs_procedures{procedure="server_caps",version="4"} 56
node_nfs_procedures{procedure="setacl",version="4"} 49
node_nfs_procedures{procedure="setattr",version="2"} 74
node_nfs_procedures{procedure="setattr",version="3"} 48906
node_nfs_procedures{procedure="setattr",version="4"} 73
node_nfs_procedures{procedure="setclientid",version="4"} 12
node_nfs_procedures{procedure="setclientid_confirm",version="4"} 84
node_nfs_procedures{procedure="statfs",version="2"} 82
node_nfs_procedures{procedure="statfs",version="4"} 86
node_nfs_procedures{procedure="symlink",version="2"} 53
node_nfs_procedures{procedure="symlink",version="3"} 0
node_nfs_procedures{procedure="symlink",version="4"} 84
node_nfs_procedures{procedure="write",version="2"} 0
node_nfs_procedures{procedure="write",version="3"} 2.570425e+06
node_nfs_procedures{procedure="write",version="4"} 54
node_nfs_procedures{procedure="writecache",version="2"} 86
# HELP node_nfs_rpc_authentication_refreshes Number of RPC authentication refreshes performed.
# TYPE node_nfs_rpc_authentication_refreshes counter
node_nfs_rpc_authentication_refreshes 1.218815394e+09
# HELP node_nfs_rpc_operations Number of RPCs performed.
# TYPE node_nfs_rpc_operations counter
node_nfs_rpc_operations 1.218785755e+09
# HELP node_nfs_rpc_retransmissions Number of RPC transmissions performed.
# TYPE node_nfs_rpc_retransmissions counter
node_nfs_rpc_retransmissions 374636
# HELP node_procs_blocked Number of processes blocked waiting for I/O to complete.
# TYPE node_procs_blocked gauge
node_procs_blocked 0

5
collector/fixtures/proc/net/rpc/nfs Normal file
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@ -0,0 +1,5 @@
net 70 70 69 45
rpc 1218785755 374636 1218815394
proc2 18 16 57 74 52 71 73 45 86 0 52 83 61 17 53 50 23 70 82
proc3 22 0 1061909262 48906 4077635 117661341 5 29391916 2570425 2993289 590 0 0 7815 15 1130 0 3983 92385 13332 2 1 23729
proc4 48 98 51 54 83 85 23 24 1 28 73 68 83 12 84 39 68 59 58 88 29 74 69 96 21 84 15 53 86 54 66 56 97 36 49 32 85 81 11 58 32 67 13 28 35 90 1 26 0