143 lines
2.9 KiB
Bash
Executable file
143 lines
2.9 KiB
Bash
Executable file
#! /bin/bash
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set -uo pipefail
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display_usage() {
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echo "Usage: $0 <repo> (local|monitor <host> <warning> <critical>|restic arguments)" >&2
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}
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if [ "$#" -lt 2 ]; then
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display_usage
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exit 1
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fi
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TARGET=$1
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ACTION=$2
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RESTIC=$(which restic)
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CURL=$(which curl)
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check_config() {
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CONFIG=/etc/backup/$1.repo
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if [ ! -f $CONFIG ]; then
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echo "Repo config file $CONFIG not found!"
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exit 1
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else
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set -a
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source $CONFIG
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set +a
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fi
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if [[ ! -x $RESTIC ]]; then
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echo "Restic binary not found"
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exit 1
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fi
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}
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handle_params () {
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. /etc/backup/local.config
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if [ $2 == "local" ]; then
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do_local_backup
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elif [ $2 == "monitor" ]; then
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do_monitor $@
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else
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shift 1
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# define an empty default if RESTIC_ARGS is not set
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RESTIC_ARGS=${RESTIC_ARGS:-""}
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$RESTIC $RESTIC_ARGS $@
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fi
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}
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do_local_backup () {
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if [ ! -f /etc/backup/local.config ]; then
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echo "local backup config file $/etc/backup/local.config not found!"
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exit 1
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fi
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. /etc/backup/local.config
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# define an empty default if BACKUP_ARGS is not set
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BACKUP_ARGS=${BACKUP_ARGS:-""}
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if [[ -x /etc/backup/local.pre ]]; then
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/etc/backup/local.pre $TARGET
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fi
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$RESTIC --exclude-file /etc/backup/local.exclude backup --host $BACKUP_HOSTNAME $BACKUP_ARGS $BACKUP_DIR
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if [[ -x /etc/backup/local.post ]]; then
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/etc/backup/local.post $TARGET
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fi
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if [[ -n "${HEALTHCHECK_URL:-}" ]]; then
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if [[ -x $CURL ]]; then
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$CURL -fsS --retry 4 "$HEALTHCHECK_URL" > /dev/null
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fi
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fi
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}
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do_monitor () {
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if [ $# -lt 5 ]; then
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display_usage
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exit 1;
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fi
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WARN=$4
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CRIT=$5
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# define an empty default if RESTIC_ARGS is not set
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RESTIC_ARGS=${RESTIC_ARGS:-""}
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SNAPS=`$RESTIC $RESTIC_ARGS snapshots --compact --no-lock -H $3`
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# Get last line and parse into variables. Removes header and is empty when no snapshot exists for host
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LAST=`sed 1,2d <<< $SNAPS | head -n -2 | tail -n 1`
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COUNT=`tail -n 1 <<< $SNAPS | cut -d " " -f 1`
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if [ ! $? -eq 0 ]; then
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echo "WARNING - restic command returned an error"
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exit 1;
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fi
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IFS=' ' read HASH DATE TIME HOST DIR <<< "$LAST"
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if [ -z "$HASH" ]; then
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echo "UNKNOWN - No snapshot found for $3"
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exit 4;
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fi
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# Compute time difference since last snapshot
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case $(uname -s) in
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Darwin)
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BACKUP_TST=$(date -j -f "%Y-%m-%d %H:%M:%S" "$DATE $TIME" "+%s")
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;;
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*)
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BACKUP_TST=$(date -d "$DATE $TIME" +"%s" )
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;;
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esac
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NOW_TST=$(date +%s)
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DIFF_S=`expr $NOW_TST - $BACKUP_TST`
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DIFF_H=`expr $DIFF_S / 3600`
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MESSAGE="Last snapshot #$HASH ${DIFF_H}h ago|snapshots=$COUNT; age=$DIFF_H"
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RET=0
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RET_H="OK"
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if [ $DIFF_H -lt $WARN ]; then
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RET=0
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RET_H="OK"
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elif [ $DIFF_H -lt $CRIT ]; then
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RET=1
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RET_H="WARNING"
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else
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RET=2
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RET_H="CRITICAL"
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fi
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echo "$RET_H - $MESSAGE"
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return $RET
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}
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check_config $@
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handle_params $@
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