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86 lines
2.2 KiB
Bash
Executable file
86 lines
2.2 KiB
Bash
Executable file
#!/bin/sh -u
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: << =cut
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=head1 NAME
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fresh-backups - Plugin to monitor the freshness of backup files
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=head1 APPLICABLE SYSTEMS
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Any system with some automated backup creating or updating archive files.
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This works well with backup-manager.
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=head1 CONFIGURATION
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The following example checks all tar.bz2 files in /path/to/your/backups/, and
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counts all those that are less than 2 days old, and there should be 4 separate
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daily archives.
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[fresh-backups]
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user root
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env.backup_dir /path/to/your/backups/
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env.lifetime 2
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env.archive_pattern *.tar.bz2
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env.backup_number 4
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This will also set the warning and critical values for this plugin to 2*4 and
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4, respectively, meaning that if the number of fresh files goes below those
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limits, the relevant notifications will be triggerred.
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An example configuration snippet for backup-manager [0] follows.
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export BM_REPOSITORY_ROOT="/path/to/your/backups"
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export BM_TARBALL_FILETYPE="tar.bz2"
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export BM_TARBALL_DIRECTORIES="/etc /home /srv /data"
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[0] https://github.com/sukria/Backup-Manager
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=head1 AUTHOR
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Olivier Mehani <shtrom+munin@ssji.net>
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=head1 LICENSE
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GPLv2
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=head1 MAGIC MARKERS
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#%# family=manual
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=cut
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if [ "${MUNIN_DEBUG:-0}" = 1 ]; then
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set -x
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fi
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# Configuration directives, edit before first use.
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BACKUP_DIR=${backup_dir:-/data/backup}
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ARCHIVE_PATTERN="${archive_pattern:-*.tar.bz2}"
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# How old backups should be considered as non-young anymore in [days].
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LIFETIME=${lifetime:-2}
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# Critical states will be issued when the number of fresh backups archives is below `backup_number`,
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# and warnings below `backup_number*lifetime - 1`
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CRIT=${backup_number:-1}
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# We should have at least LIFETIME-1 complete backups when the new one is in progress
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WARN=$((CRIT*(LIFETIME-1)))
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# The situation is critical if there are no young files, the backup is down.
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case ${1:-} in
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config)
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cat << EOF
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graph_title Fresh (<=${LIFETIME}d) backups archives in ${BACKUP_DIR}
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graph_vlabel number
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graph_args -l 0
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graph_category backup
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freshcount.label number
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freshcount.critical ${CRIT}:
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freshcount.warning ${WARN}:
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EOF
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exit 0;;
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esac
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printf "freshcount.value "
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find "${BACKUP_DIR}" -name "${ARCHIVE_PATTERN}" -mmin "-$(((LIFETIME+1)*60*24))" | wc -l
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printf "freshcount.extinfo "
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du -sh "${BACKUP_DIR}"
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