145 lines
4.3 KiB
Bash
Executable File
145 lines
4.3 KiB
Bash
Executable File
#!/bin/bash -
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#
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#### Abstract ################################################################
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#
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# Munin contributed plugin to measure open, locked and files being hold by
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# Netatalk version 3.*;
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#
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#### Author ##################################################################
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#
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# Otavio Fernandes <otaviof@gmail.com>
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# Wednesday, 01/01/2014
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#
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#### Functions ###############################################################
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#
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function afpd_full_path () {
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echo $(which afpd |head -n 1)
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}
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function afp_related_file_exists () {
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local afp_file_path=$1
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if [ -z "$afp_file_path" -o ! -f "$afp_file_path" ]; then
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echo "ERROR: AFP related file not found: \"${afpd_bin_path}\";" >&2
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exit 1
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fi
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}
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function is_netatalk_version_3 () {
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local afpd_bin_path=$1
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version_string="$(${afpd_bin_path} -version |head -n1 |grep '^afpd' |cut -d' ' -f2)"
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if [[ $version_string != 3\.* ]]; then
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cat <<EOM >&2
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ERROR: Netatalk is not version 3.
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Binary: ${afpd_bin_path};
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Version: ${version_string};
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EOM
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exit 1
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fi
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}
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function count_running_procs () {
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local afpd_bin_path=$1
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echo $(ps ax --no-headers -o command |grep "^${afpd_bin_path}" |wc -l)
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}
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function count_connected_users () {
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local afpd_bin_path=$1
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afpd_procs=$(ps anx --no-headers -o uid,command |grep -E "\w+\d+*\s${afpd_bin_path}" |wc -l)
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# one of those processes will be always from root user, so it's not being
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# used to externaly connect volumes, therefor being disconsider.
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echo $(echo "${afpd_procs} - 1" |bc)
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}
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function base_lsof () {
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local afpd_bin_path=$1
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process_name="$(basename ${afpd_bin_path})"
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excluded_fds="^DEL,^err,^jld,^ltx,^Mxx,^m86,^mem,^mmap,^pd,^rtd,^tr,^txt,^v86"
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echo "lsof -a -c ${process_name} -d ${excluded_fds}"
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}
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function count_locked_files () {
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local afpd_bin_path=$1
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cmd_suffix="$(base_lsof "${afpd_bin_path}")"
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echo "$(${cmd_suffix} -F -l |grep '^l[rRwWu]' |wc -l)"
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}
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function probe_afp_conf_file () {
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local afpd_bin_path=$1
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echo "$(${afpd_bin_path} -version 2>&1 |grep -E '^\s+afp.conf\:' |awk '{print $2}')"
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}
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function count_open_shares () {
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local afpd_bin_path=$1
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local afp_conf_path=$2
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mounted=0
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declare -a shares=($(grep '^path.*\=' ${afp_conf_path} |awk -F '=' '{print $2}' |sed -E 's/^\s+//g'))
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if [ ! -z "$shares" ]; then
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# narrowing lsof results to only list configured mount directories
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cmd_lookup_prefix=$(echo ${shares[@]} |tr " " "|")
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cmd_suffix="$(base_lsof "${afpd_bin_path}")"
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mounted=$(${cmd_suffix} -F n |grep '^n' |egrep "(${cmd_lookup_prefix})" |wc -l)
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fi
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echo $mounted
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}
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#### Main ####################################################################
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# For all routines, holds the entry points dealing with the informed parameter
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# or lack of it, meaning just print out collected data.
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#
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case "$1" in
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config)
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# printing configuration for this plugin's produced data
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cat <<EOM
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graph_title Netatalk v3 Status
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graph_title Netatalk status
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graph_args --logarithmic --lower-limit 0.1
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graph_vlabel Number
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graph_category fs
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proc.label Running processes
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proc.info Running AFPd processes
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proc.min 0
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user.label Connected users
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user.info Connected users
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user.min 0
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lock.label Locked files
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lock.info AFPd locked files
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lock.min 0
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share.label Open shares
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share.info Netatalk open shares
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share.min 0
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EOM
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exit 0
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;;
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*)
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#### Boilerplates ####################################################
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# Locating AFP related files:
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# * Binary: Using the first result of "which" command;
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# * Config: Using "afpd" with parameters to pring configuration file
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# location;
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#
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AFPD_PATH="$(afpd_full_path)"
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afp_related_file_exists "${AFPD_PATH}"
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is_netatalk_version_3 "${AFPD_PATH}"
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AFP_CONF_PATH="$(probe_afp_conf_file "${AFPD_PATH}")"
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afp_related_file_exists "${AFP_CONF_PATH}"
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#### Collecting Metrics ##############################################
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#
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echo "proc.value" $(count_running_procs "${AFPD_PATH}")
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echo "user.value" $(count_connected_users "${AFPD_PATH}")
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echo "lock.value" $(count_locked_files "${AFPD_PATH}")
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echo "share.value" $(count_open_shares "${AFPD_PATH}" "${AFP_CONF_PATH}")
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exit 0
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;;
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esac
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# EOF
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