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https://github.com/munin-monitoring/contrib.git
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fix: use public key as graph id's as those are required and unique
feat: add support for dirtyconfig
This commit is contained in:
pimlie
parent
d91bebd144
commit
4b56760a80
1 changed files with 148 additions and 93 deletions
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@ -57,23 +57,49 @@ function wg_exists {
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return $?
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}
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_MAIN_ARG_FIRST=$1
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function should_emit_config {
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if [ "$_MAIN_ARG_FIRST" = "config" ]; then
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return 0
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fi
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return 1
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}
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function should_emit_values {
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if ! should_emit_config || [ "$MUNIN_CAP_DIRTYCONFIG" = "1" ]; then
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return 0
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fi
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return 1
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}
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declare -a _CACHE_INTERFACES
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function wg_interfaces {
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show_all=$1
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for iface in $(wg show interfaces | tr " " "\n"); do
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local -n _wg_ifaces=$1
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local show_all=$2
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if [ "${#_CACHE_INTERFACES[@]}" -eq 0 ]; then
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IFS=' ' read -ra _CACHE_INTERFACES <<< "$(wg show interfaces)"
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fi
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local iface
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for iface in "${_CACHE_INTERFACES[@]}"; do
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# Filter interfaces if needed
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if [ -z "$show_all" ] \
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&& [ -n "$INTERFACE" ] \
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&& [ "$INTERFACE" != "$iface" ]; then
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continue
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fi
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echo "$iface"
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_wg_ifaces+=("$iface")
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done
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}
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declare -A _CACHE_PEERS
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function wg_peers {
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iface=$1
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local -n _wg_peers=$1
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local iface=$2
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<<<<<<< Updated upstream
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# From wg 8 manpage:
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# If dump is specified, then several lines are printed; the first contains
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# in order separated by tab: private-key, public-key, listen-port, fwmark.
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@ -86,69 +112,97 @@ function wg_peers {
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# First line of dump contains interface info, ignore this line
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continue
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fi
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=======
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if [ -z "${_CACHE_PEERS[$iface]}" ]; then
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# From wg 8 manpage:
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# If dump is specified, then several lines are printed; the first contains
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# in order separated by tab: private-key, public-key, listen-port, fwmark.
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# Subsequent lines are printed for each peer and contain in order separated
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# by tab: public-key, preshared-key, endpoint, allowed-ips, latest-handshake,
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# transfer-rx, transfer-tx, persistent-keepalive
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# Pipe to tail to skip first line
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_CACHE_PEERS["$iface"]="$(wg show "$iface" dump | tail -n +2)"
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fi
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>>>>>>> Stashed changes
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echo "$line"
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done
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readarray -t peers <<< "${_CACHE_PEERS[$iface]}"
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_wg_peers=("${peers[@]}")
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}
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function safe_peer_id {
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unsafe_peer_id=$1
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echo "${unsafe_peer_id//[.:]/_}"
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echo "${unsafe_peer_id//[^a-zA-Z0-9-_]/_}"
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}
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case $1 in
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autoconf)
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if wg_exists; then
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echo "yes"
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else
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echo "no (wg command not found)"
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fi
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;;
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suggest)
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if wg_exists; then
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wg_interfaces 1
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fi
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;;
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config)
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function peer_count {
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declare -a ifaces
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wg_interfaces ifaces
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echo "multigraph wireguard_peercount"
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if should_emit_config; then
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# Config for peer count per interface graph
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cat << EOF
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multigraph wireguard_peercount
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graph_title interface peer count
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graph_vlabel Number of peers
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graph_category wireguard
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graph_info This graph shows the number of peers per wireguard interface
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EOF
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fi
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for iface in $(wg_interfaces); do
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for iface in "${ifaces[@]}"; do
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if should_emit_config; then
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# List config for all interfaces
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cat <<EOF
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pc_on_$iface.label $iface
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pc_on_$iface.info Interface $iface
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pc_on_$iface.info Configured peers on interface $iface
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pc_on_$iface.min 0
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apc_on_$iface.label Active on $iface
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apc_on_$iface.info Active on $iface
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apc_on_$iface.info Active peers on interface $iface
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apc_on_$iface.min 0
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EOF
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done
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echo ""
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fi
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for iface in $(wg_interfaces); do
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# Config for peer traffic
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if should_emit_values; then
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active_threshold="${active_threshold:-$(date --date="${active_threshold_m:-3} min ago" +%s)}"
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declare -a peers
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wg_peers peers "$iface"
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peer_count="${#peers[@]}"
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active_peer_count=$(awk -F"\t" -v threshold="$active_threshold" '$5 > threshold' <<< "$(IFS=$'\n'; echo "${peers[*]}")" | wc -l)
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echo "pc_on_$iface.value $peer_count"
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echo "apc_on_$iface.value $active_peer_count"
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fi
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done
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}
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function peer_traffic {
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iface="$1"
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echo "multigraph wireguard_peertraffic_$iface"
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if should_emit_config; then
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cat <<EOF
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multigraph wireguard_peertraffic_$iface
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graph_title $iface peer traffic
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graph_args --base 1000
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graph_vlabel bits in (-) / out (+) per ${graph_period}
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graph_vlabel bits in (-) / out (+) per \${graph_period}
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graph_category wireguard
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graph_info This graph shows the traffic per peer on the $iface wireguard interface. Traffic is shown in bits per second.
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EOF
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fi
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for line in $(wg_peers "$iface"); do
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read -r -a peer <<< "$(echo "$line" | tr ';' ' ')"
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peer_id=$(safe_peer_id "${peer[2]}")
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declare -a _peers
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wg_peers peers "$iface"
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for line in "${peers[@]}"; do
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IFS=$'\t' read -ra peer <<< "$line"
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peer_id="$(safe_peer_id "${peer[0]}")"
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if should_emit_config; then
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# List config for up/down values for each peer
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cat <<EOF
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down_${peer_id}.label received
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@ -161,40 +215,41 @@ up_${peer_id}.type DERIVE
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up_${peer_id}.negative down_${peer_id}
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up_${peer_id}.cdef up_${peer_id},8,*
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up_${peer_id}.min 0
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EOF
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fi
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if should_emit_values; then
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cat <<EOF
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down_${peer_id}.value ${peer[5]}
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up_${peer_id}.value ${peer[6]}
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EOF
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fi
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done
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done
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}
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case $1 in
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autoconf)
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if wg_exists; then
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echo "yes"
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else
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echo "no (wg command not found)"
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fi
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;;
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suggest)
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if wg_exists; then
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declare -a ifaces
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wg_interfaces ifaces 1
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IFS=$'\n'
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echo "${ifaces[*]}"
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fi
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;;
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*)
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# Collect & print current monitoring values
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echo "multigraph wireguard_peercount"
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active_threshold=$(date --date="${active_threshold_m:-3} min ago" +%s)
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peer_count
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for iface in $(wg_interfaces); do
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iface_peers=$(wg_peers "$iface")
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peer_count=$(wc -l <<< "$iface_peers")
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active_peer_count=$(awk -F";" -v threshold=$active_threshold '$5 > threshold' <<< "$iface_peers" | wc -l)
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echo "pc_on_$iface.value $peer_count"
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echo "apc_on_$iface.value $active_peer_count"
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done
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echo ""
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for iface in $(wg_interfaces); do
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echo "multigraph wireguard_peertraffic_$iface"
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for line in $(wg_peers "$iface"); do
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read -r -a peer <<< "$(echo "$line" | tr ';' ' ')"
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peer_id=$(safe_peer_id "${peer[2]}")
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echo "down_${peer_id}.value ${peer[5]}"
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echo "up_${peer_id}.value ${peer[6]}"
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done
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echo ""
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declare -a ifaces
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wg_interfaces ifaces
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for iface in "${ifaces[@]}"; do
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peer_traffic "$iface"
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done
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;;
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esac
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