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[plugins/user/membyuser] Minor enhancements 

Don't use a fixed scale
Use resident set size as measure for a process' memory usage instead
of vsz
More robust username enumeration
This commit is contained in:
pcy 2020-07-15 02:38:10 +02:00 committed by Lars Kruse
parent 0d6b938c7b
commit a1c4bcb25a
1 changed files with 17 additions and 15 deletions
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32
plugins/user/membyuser
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@ -2,10 +2,18 @@
#
# Plugin to monitor Memory usage inspired by cpubyuser
#
# 2012-05-23 Sebastien Campion
# Usage: Place in /etc/munin/plugins/ (or link it there using ln -s)
# Add this to your /etc/munin/plugin-conf.d/munin-node:
# [membyuser]
# user root # required if /proc can't be read from by any user!
LU=`ps auh | cut -d' ' -f 1 | sort -u`
USERS=`echo $LU`
## 2012-05-23 Sebastien Campion
# changed on 2019-08-30 by pcy <pcy@ulyssis.org>:
# - change category from 'memory' to 'system' (so it appears next to cpubyuser)
# - use rss instead of vsz
# - more robust username enumeration
USERS="$(ps ax --format uname | tail +2 | sort -u | grep -v -e '^root$')"
if [ "$1" = "autoconf" ]; then
if [ -n "$USERS" ]; then
@ -17,12 +25,11 @@ if [ "$1" = "autoconf" ]; then
fi
if [ "$1" = "config" ]; then
echo "graph_args --base 1000 -r --lower-limit 0"
echo "graph_args --base 1024"
echo "graph_title Memory usage, by user"
echo "graph_category memory"
echo "graph_info This graph shows memory usage, for monitored users."
echo "graph_vlabel KB"
echo "graph_scale no"
echo "graph_vlabel Bytes"
echo "graph_period second"
_USERS=${USERS//[-.]/_}
echo "graph_order $_USERS others"
@ -32,17 +39,12 @@ if [ "$1" = "config" ]; then
echo "${_USER}.label $USER"
echo "${_USER}.info Memory used by user $USER"
echo "${_USER}.type GAUGE"
if [ $FIRSTUSER -eq 1 ]; then
echo "${_USER}.draw AREA"
FIRSTUSER=0
else
echo "${_USER}.draw STACK"
fi
echo "${_USER}.draw AREASTACK"
done
exit
fi
ps -e -o "%z%U" | \
ps -e -o rss,user | \
awk -v USERS="$USERS" '
{ if ($2 != "USER") MEM_USER[$2]+=$1 }
END {
@ -52,9 +54,9 @@ ps -e -o "%z%U" | \
if (m != 0) {
_user=user
gsub(/[-.]/,"_", _user);
print _user".value", MEM_USER[user]
print _user".value", (MEM_USER[user] * 1024)
} else
others_sum += MEM_USER[user]
others_sum += (MEM_USER[user] * 1024)
}
print "others.value", others_sum;
}'