lots of stuff

2026-08-16 14:48:04 +02:00
parent c63db540e8
commit 49fa352476
45 changed files with 32520 additions and 93 deletions
@@ -0,0 +1,60 @@
+#!/bin/bash
+
+set -uo pipefail
+
+textfile_dir={{ node_exporter_textfile_dir }}
+file=${textfile_dir}/wireguard.prom
+tmp=${file}.$$
+now=$(date +%s)
+
+mkdir -p ${textfile_dir}
+
+peer_name() {
+    case "$1" in
+{% for key, name in wireguard_peer_names.items() %}
+        "{{ key }}") echo "{{ name }}" ;;
+{% endfor %}
+        *) echo "unknown" ;;
+    esac
+}
+
+{
+    echo "# HELP wireguard_peer_last_handshake_seconds Unix time of the last handshake with a peer."
+    echo "# TYPE wireguard_peer_last_handshake_seconds gauge"
+    echo "# HELP wireguard_peer_handshake_age_seconds Seconds since the last handshake with a peer."
+    echo "# TYPE wireguard_peer_handshake_age_seconds gauge"
+    echo "# HELP wireguard_peer_up Whether a peer handshaked within the last five minutes."
+    echo "# TYPE wireguard_peer_up gauge"
+    echo "# HELP wireguard_peer_receive_bytes_total Bytes received from a peer."
+    echo "# TYPE wireguard_peer_receive_bytes_total counter"
+    echo "# HELP wireguard_peer_transmit_bytes_total Bytes sent to a peer."
+    echo "# TYPE wireguard_peer_transmit_bytes_total counter"
+
+    wg show all dump 2>/dev/null | awk 'NF >= 8' | while read -r interface key psk endpoint allowed handshake rx tx keepalive
+    do
+        name=$(peer_name "${key}")
+        labels="interface=\"${interface}\",peer=\"${name}\""
+
+        age=$((now - handshake))
+        up=0
+
+        if [ "${handshake}" -gt 0 ] && [ "${age}" -lt 300 ]
+        then
+            up=1
+        fi
+
+        if [ "${handshake}" -eq 0 ]
+        then
+            age=-1
+        fi
+
+        echo "wireguard_peer_last_handshake_seconds{${labels}} ${handshake}"
+        echo "wireguard_peer_handshake_age_seconds{${labels}} ${age}"
+        echo "wireguard_peer_up{${labels}} ${up}"
+        echo "wireguard_peer_receive_bytes_total{${labels}} ${rx}"
+        echo "wireguard_peer_transmit_bytes_total{${labels}} ${tx}"
+    done
+} > "${tmp}"
+
+chmod 0644 "${tmp}"
+mv "${tmp}" "${file}"