From 932960c3308fa15dbf27a1a8a3bea6693d3ea208 Mon Sep 17 00:00:00 2001
From: Timo Derstappen <teemow@gmail.com>
Date: Sat, 23 Apr 2016 22:31:00 +0200
Subject: [PATCH] first commit

---
 README.md                        | 36 +++++++++++++++++++
 VERSION                          |  1 +
 borg.env                         |  2 ++
 borg_exporter                    | 59 ++++++++++++++++++++++++++++++++
 prometheus-borg-exporter.service |  7 ++++
 prometheus-borg-exporter.timer   |  8 +++++
 6 files changed, 113 insertions(+)
 create mode 100644 README.md
 create mode 100644 VERSION
 create mode 100644 borg.env
 create mode 100755 borg_exporter
 create mode 100644 prometheus-borg-exporter.service
 create mode 100644 prometheus-borg-exporter.timer

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..3ab0fd4
--- /dev/null
+++ b/README.md
@@ -0,0 +1,36 @@
+# Borg exporter
+
+Export borg information to prometheus.
+
+## Dependencies
+
+ * Prometheus (obviously)
+ * Node Exporter with textfile collector
+ * Borg (https://github.com/borgbackup/borg)
+
+## Install
+
+Copy `borg_exporter` to `/usr/local/bin`.
+
+Copy `borg.env` to `/etc/borg` and replace your repokey and repository in it.
+
+Copy the systemd unit to `/etc/systemd/system` and run 
+
+```
+systemctl enable prometheus-borg-exporter.timer
+systemctl start prometheus-borg-exporter.timer
+```
+
+Alternative: Use `ExecStartPost` in your borg backupt timer itself to write our the metrics.
+
+## Configure your node exporter
+
+Make sure your node exporter uses `textfile` in `--collectors.enabled` and add the following parameter: `--collector.textfile.directory=/var/lib/node_exporter/textfile_collector`
+
+## Example queries
+
+```
+backup_total_size_dedup{job='node'}
+backup_last_size_dedup{job='node'}
+backup_chunks_total{job='node'}
+```
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..9c1b85d
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+0.0.0+git
diff --git a/borg.env b/borg.env
new file mode 100644
index 0000000..b27d353
--- /dev/null
+++ b/borg.env
@@ -0,0 +1,2 @@
+BORG_PASSPHRASE=<your-passphrase>
+REPOSITORY=<your-repository>
diff --git a/borg_exporter b/borg_exporter
new file mode 100755
index 0000000..6fafa93
--- /dev/null
+++ b/borg_exporter
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+set -eu
+
+source /etc/borg
+
+TEXTFILE_COLLECTOR_DIR=/var/lib/node_exporter/textfile_collector
+PROM_FILE=$TEXTFILE_COLLECTOR_DIR/backup.prom
+TMP_FILE=$PROM_FILE.$$
+LIST=$(BORG_PASSPHRASE=$BORG_PASSPHRASE borg list $REPOSITORY |awk '{print $1}')
+COUNTER=0
+
+mkdir -p $TEXTFILE_COLLECTOR_DIR
+
+for i in $LIST; do
+	COUNTER=$((COUNTER+1))
+done
+
+BORG_INFO=$(BORG_PASSPHRASE=$BORG_PASSPHRASE borg info "$REPOSITORY::$i")
+echo "backup_count $COUNTER" > $TMP_FILE
+echo "backup_files $(echo "$BORG_INFO" |grep "Number of files" |awk '{print $4}')" >> $TMP_FILE
+echo "backup_chunks_unique $(echo "$BORG_INFO" |grep "Chunk index" |awk '{print $3}')" >> $TMP_FILE
+echo "backup_chunks_total $(echo "$BORG_INFO" |grep "Chunk index" |awk '{print $4}')" >> $TMP_FILE
+
+function calc_bytes {
+	NUM=$1
+	UNIT=$2
+	
+	case "$UNIT" in
+		KB)
+			echo $NUM | awk '{ print $1 * 1024 }'
+			;;
+		MB)
+			echo $NUM | awk '{ print $1 * 1024 * 1024 }'
+			;;
+		GB)
+			echo $NUM | awk '{ print $1 * 1024 * 1024 * 1024 }'
+			;;
+	esac
+}
+
+# byte size
+LAST_SIZE=$(calc_bytes $(echo "$BORG_INFO" |grep "This archive" |awk '{print $3}') $(echo "$BORG_INFO" |grep "This archive" |awk '{print $4}'))
+LAST_SIZE_COMPRESSED=$(calc_bytes $(echo "$BORG_INFO" |grep "This archive" |awk '{print $5}') $(echo "$BORG_INFO" |grep "This archive" |awk '{print $6}'))
+LAST_SIZE_DEDUP=$(calc_bytes $(echo "$BORG_INFO" |grep "This archive" |awk '{print $7}') $(echo "$BORG_INFO" |grep "This archive" |awk '{print $8}'))
+TOTAL_SIZE=$(calc_bytes $(echo "$BORG_INFO" |grep "All archives" |awk '{print $3}') $(echo "$BORG_INFO" |grep "All archives" |awk '{print $4}'))
+TOTAL_SIZE_COMPRESSED=$(calc_bytes $(echo "$BORG_INFO" |grep "All archives" |awk '{print $5}') $(echo "$BORG_INFO" |grep "All archives" |awk '{print $6}'))
+TOTAL_SIZE_DEDUP=$(calc_bytes $(echo "$BORG_INFO" |grep "All archives" |awk '{print $7}') $(echo "$BORG_INFO" |grep "All archives" |awk '{print $8}'))
+
+
+echo "backup_last_size $LAST_SIZE" >> $TMP_FILE
+echo "backup_last_size_compressed $LAST_SIZE_COMPRESSED" >> $TMP_FILE
+echo "backup_last_size_dedup $LAST_SIZE_DEDUP" >> $TMP_FILE
+echo "backup_total_size $TOTAL_SIZE" >> $TMP_FILE
+echo "backup_total_size_compressed $TOTAL_SIZE_COMPRESSED" >> $TMP_FILE
+echo "backup_total_size_dedup $TOTAL_SIZE_DEDUP" >> $TMP_FILE
+
+
+mv $TMP_FILE $PROM_FILE
diff --git a/prometheus-borg-exporter.service b/prometheus-borg-exporter.service
new file mode 100644
index 0000000..8eb5648
--- /dev/null
+++ b/prometheus-borg-exporter.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Prometheus Borg Exporter
+After=network-online.target
+
+[Service]
+ExecStart=/usr/local/bin/borg_exporter
+Type=oneshot
diff --git a/prometheus-borg-exporter.timer b/prometheus-borg-exporter.timer
new file mode 100644
index 0000000..f7bd688
--- /dev/null
+++ b/prometheus-borg-exporter.timer
@@ -0,0 +1,8 @@
+[Unit]
+Description=Prometheus Borg Exporter Timer
+
+[Timer]
+OnCalendar=daily
+
+[Install]
+WantedBy=timers.target