lxc: working on buster (gandalf), and almost working on virtual (jessie), except lxc_net

plugins/lxc/lxc_logins

@@ -0,0 +1,71 @@
+#!/bin/bash
+# -*- sh -*-
+
+: << =cut
+
+=head1 NAME
+
+lxc_logins - Plugin to monitor LXC logins
+
+=head1 CONFIGURATION
+
+  [lxc_*]
+    user root
+
+=head1 INTERPRETATION
+
+This plugin needs root privilege.
+
+=head1 AUTHOR
+
+schaefer@alphanet.ch
+
+=head1 LICENSE
+
+GPLv3
+
+=head1 MAGIC MARKERS
+
+ #%# family=auto
+ #%# capabilities=autoconf
+
+=cut
+
+. $MUNIN_LIBDIR/plugins/plugin.sh
+
+. $MUNIN_LIBDIR/plugins/lxc-lib
+
+active_guests=$(active_guests)
+
+if [ "$1" = "autoconf" ]; then
+   if [ -r /proc/stat ]; then
+      echo yes
+      exit 0
+   else
+      echo "no (no /proc/stat)"
+      exit 0
+   fi
+fi
+
+if [ "$1" = "config" ]; then
+   cat <<EOF
+graph_title Logins
+graph_category lxc
+EOF
+ 
+   for n in $active_guests
+   do
+      g=$(lxc_clean_fieldname $n)
+      cat <<EOF
+logins_${g}.label $n: logins
+logins_${g}.type GAUGE
+EOF
+   done
+   exit 0
+fi
+
+for n in $active_guests
+do 
+   g=$(lxc_clean_fieldname $n)
+   echo "logins_${g}.value $(lxc-attach -n $n users | wc -w | bc)"
+done