opendev/system-config
Code Issues Proposed changes

borg-backup-server: log prune output to file

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This saves prune output to a log file automatically.  Add a bit more
info on the process too.

Change-Id: I2607ddbc313dfebc122609af78bb5eed63906f6b
This commit is contained in:
Ian Wienand 2021-08-04 14:44:27 +10:00
parent eb965a7992
commit 3d63b3b8a4
2 changed files with 12 additions and 5 deletions
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11
doc/source/sysadmin.rst
View File

@ -302,10 +302,13 @@ roll-back to a known good state; see
However, we have limited backup space. Each backup server has a
script ``/usr/local/bin/prune-borg-backups`` which can be run to
reclaim space. This will keep the last 7 days of backups, then
monthly backups for 1 year and yearly backups for each archive. The
backup servers will send a warning when backup volume usage is high,
at which point this can be run manually.
reclaim space. This should be run in a ``screen`` instance as it can
take a considerable time. It will prompt when run; you can confirm
the process with a ``noop`` run; confirming the prune will log the
output to ``/opt/backups``. This will keep the last 7 days of backups,
then monthly backups for 1 year and yearly backups for each archive.
The backup servers will send a warning when backup volume usage is
high, at which point this can be run manually.
.. _force-merging-a-change:

6
playbooks/roles/borg-backup-server/files/prune-borg-backups.sh
View File

@ -10,6 +10,10 @@ if [[ ${borg_op} == 'noop' ]]; then
BORG_OP='--dry-run'
elif [[ ${borg_op} == 'prune' ]]; then
BORG_OP=''
LOG_FILE="/opt/backups/prune-$(date '+%Y-%m-%d-%H-%M-%S').log"
echo "*** Logging output to ${LOG_FILE}"
exec 1>${LOG_FILE}
exec 2>&1
else
echo "*** Invalid input"
exit 1
@ -31,7 +35,7 @@ for u in borg-*; do
echo
echo
echo "+------"
echo "| Pruning ${BORG_REPO} archive ${prefix}"
echo "| $(date) Pruning ${BORG_REPO} archive ${prefix}"
echo "+------"
/opt/borg/bin/borg prune --prefix ${prefix} ${BORG_OP} --verbose --list --show-rc --keep-daily 7 --keep-weekly 4 --keep-monthly 12
done