mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
160 lines
5.5 KiB
Bash
Executable File
160 lines
5.5 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
: << =cut
|
|
|
|
=head1 NAME
|
|
|
|
netatalk - Plugin to monitor number of files held open by the Netatalk/AFP clients
|
|
|
|
=head1 CONFIGURATION
|
|
|
|
This plugin uses the following configuration variables
|
|
|
|
[netatalk]
|
|
user root - Plugin must run under root for lsof
|
|
env.afpd - Path to "afpd" executable (defaults to what afpd -v says, usually "/usr/sbin/afpd")
|
|
env.afpdconf - Path to "afpd.conf" file (defaults to what afpd -v says, usually "/etc/netatalk/afpd.conf")
|
|
|
|
=head1 VERSION
|
|
|
|
0.1 (2012-05-23)
|
|
|
|
=head1 AUTHOR
|
|
|
|
DUVERGIER Claude (http://claude.duvergier.fr)
|
|
|
|
=head1 LICENSE
|
|
|
|
GPLv2
|
|
|
|
=head1 BUGS
|
|
|
|
Known bugs:
|
|
* A bug can occur if a shared path is located inside another shared path (eg. "/mnt/afpShares/foo" and "/mnt/afpShares/foo/subFoo/bar").
|
|
Depending of the order the shares are found, the script might say the less-deeper one is opened whereas he is processing the other one.
|
|
|
|
=head1 TODO
|
|
|
|
Features to-do list:
|
|
* Support multiple servers
|
|
|
|
=head1 MAGIC MARKERS
|
|
|
|
#%# family=contrib
|
|
#%# capabilities=autoconf
|
|
|
|
=cut
|
|
|
|
# Find "afpd" location:
|
|
afpdPath=${afpd:-`which afpd`}
|
|
afpdPath=${afpdPath:-/usr/sbin/afpd}
|
|
|
|
|
|
|
|
#####
|
|
## Munin configuration ("autoconf" and "config")
|
|
#####
|
|
|
|
if [ "$1" = "autoconf" ]; then
|
|
if [ -x $afpdPath ]; then
|
|
echo yes
|
|
exit 0
|
|
else
|
|
echo no '(afpd not found)'
|
|
exit 0
|
|
fi
|
|
fi
|
|
|
|
if [ "$1" = "config" ]; then
|
|
echo 'graph_title Netatalk status'
|
|
echo 'graph_args --logarithmic --lower-limit 0.1'
|
|
echo 'graph_vlabel Number'
|
|
echo 'graph_category fs'
|
|
echo 'proc.label Running processes'
|
|
echo 'proc.info Number of running afpd processes'
|
|
echo 'proc.min 0'
|
|
echo 'user.label Connected users'
|
|
echo 'user.info Number of users connected to netatalk service'
|
|
echo 'user.min 0'
|
|
echo 'lock.label Locked files'
|
|
echo 'lock.info Number of files locked by afpd'
|
|
echo 'lock.min 0'
|
|
echo 'share.label Open shares'
|
|
echo 'share.info Number of open netatalk shares'
|
|
echo 'share.min 0'
|
|
exit 0
|
|
fi
|
|
|
|
##########
|
|
|
|
|
|
|
|
#####
|
|
## Script environment
|
|
#####
|
|
|
|
# Find "afpd.conf" location:
|
|
afpdConfPath=${afpdconf:-`$afpdPath -v 2>/dev/null | grep "afpd.conf" | awk '{print $2}'`}
|
|
|
|
baseLsofCommand="lsof -a -c $(basename $afpdPath) -d ^DEL,^err,^jld,^ltx,^Mxx,^m86,^mem,^mmap,^pd,^rtd,^tr,^txt,^v86"
|
|
|
|
#TODO: Support multiple servers
|
|
defaultServer_defaultVolConfigLine=$(cat $afpdConfPath | grep "^[^#]" | grep "\-defaultvol")
|
|
if [ -z "$defaultServer_defaultVolConfigLine" ]; then
|
|
defaultServer_volumesFile=`$afpdPath -v 2>/dev/null | grep "AppleVolumes.default" | awk '{print $2}'` # Default location "AppleVolumes.default"
|
|
else
|
|
defaultVol_pathIsQuoted="-defaultvol ('|\")"
|
|
defaultVol_quotedPattern="-defaultvol ('|\")([^\1]*)\1"
|
|
# Following regex is from http://stackoverflow.com/questions/537772/what-is-the-most-correct-regular-expression-for-a-unix-file-path
|
|
defaultVol_nonQuotedPattern='-defaultvo(l) (([^\0 !$`&*()+]|\\( |!|$|`|&|\*|\(|\)|\+))+)'
|
|
defaultVol_pathPattern=$defaultVol_nonQuotedPattern
|
|
[[ $defaultServer_defaultVolConfigLine =~ $defaultVol_pathIsQuoted ]] && defaultVol_pathPattern=$defaultVol_quotedPattern
|
|
[[ $defaultServer_defaultVolConfigLine =~ $defaultVol_pathPattern ]] && defaultServer_volumesFile=${BASH_REMATCH[2]}
|
|
fi
|
|
|
|
##########
|
|
|
|
|
|
|
|
#####
|
|
## Actual monitoring
|
|
#####
|
|
|
|
# Running processes (proc):
|
|
echo "proc.value" $(ps ax --no-headers -o command | grep "^$afpdPath" | wc -l)
|
|
|
|
# Connected users (user):
|
|
# We will ignore root (having UID=0 it's line will be first) (assomption done: there will have only one line corresponding to root in `ps` output)
|
|
connectedUsers=$(ps anx --no-headers -o uid,command | sed 's/^ *//g' | grep "^[0-9]* $afpdPath" | sort -n | tail -n +2 | awk '{print $1}')
|
|
echo "user.value" `echo $connectedUsers | wc -w`
|
|
|
|
# Locked files (lock):
|
|
echo "lock.value" $($baseLsofCommand -F l | grep "^l[rRwWu]" | wc -l)
|
|
|
|
# Open shares (share):
|
|
openShares=0
|
|
|
|
#TOFIX: A bug can occur if a shared path is located inside another shared path (eg. "/mnt/afpShares/foo" and "/mnt/afpShares/foo/subFoo/bar"):
|
|
# Depending of the order the shares are found, the script might say the less-deeper one is opened whereas he is processing the other one
|
|
# Solution: sort shares per descending depth
|
|
|
|
# Following regex is from http://stackoverflow.com/questions/10134129/generic-shell-bash-method-to-parse-string-for-possibly-quoted-fields
|
|
for shareName in `cat $defaultServer_volumesFile | grep "^[^#:]" | grep -oP "^(['\"]).*?\1|^(\\\\ |[^ '\"])*"`; do
|
|
if [[ "$shareName" =~ "~" ]]; then
|
|
for currentUid in $connectedUsers; do # For each connected users
|
|
currentUserHomeDir=`getent passwd $currentUid | cut -d ':' -f6` # Fetch it's the home directory
|
|
currentUserHomeDir=`readlink -f "$currentUserHomeDir"` # We want the realpath (resolves symbolic links and normalize the path)
|
|
|
|
#FIX: We use pipe `lsof` outputs to `echo -e` with `xargs` because lsof "displays only printable ASCII characters" (cf. http://ftp.cerias.purdue.edu/pub/tools/unix/sysutils/lsof/00FAQ #14.5)
|
|
# Then if a share with non-ASCII characters in it's path were to be opened, lsof would return them on \xNN form and grep wouldn't match: `echo -e /the/path` fixes this
|
|
[ `$baseLsofCommand -F n | xargs -0 echo -e | grep "^n$currentUserHomeDir" | wc -l` -gt 0 ] && let openShares++ # If found in lsof output: increment the openShares counter
|
|
done
|
|
else
|
|
shareName=`readlink -f "$shareName"` # We want the realpath (resolves symbolic links and normalize the path)
|
|
[ `$baseLsofCommand -F n | xargs -0 echo -e | grep "^n$shareName" | wc -l` -gt 0 ] && let openShares++ # If found in lsof output: increment the openShares counter
|
|
fi
|
|
done
|
|
echo "share.value" $openShares
|
|
|
|
##########
|