Add restic drivers: data leg, incus leg via file mount, weekly maintenance
restic-backup.sh: dump phase carried over verbatim from plakar-backup.sh, then one restic backup invocation (dump dir + restic-paths, nextcloud excludes) into restic-data; -s dumps|backup for staged seeding. restic-incus-backup.sh: per-instance incus file mount (distinct mountpoints — restic parents by host+path), expanded config yaml alongside, giants excluded. restic-maintenance.sh: weekly prune (--max-unused 10%, --max-repack-size 4G) + structure check + rotating 1/52 data check. Plus restic-paths and the nextcloud excludes list. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Julien Lutran
co-authored by
Claude Fable 5
Claude Fable 5
parent
528dec1121
commit
590279190a
Executable
+160
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#!/bin/bash
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#
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# Nightly restic data backup (repo: restic-data). Three phases:
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# 1. dumps — incus's own DBs, plus application-consistent database
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# dumps taken with `incus exec` (container-local auth: no DB
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# users, no network exposure). Auto-discovered in every RUNNING
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# container — no manifest to go stale: native MariaDB/MySQL
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# (either binary naming), native PostgreSQL (pg_dump per DB +
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# pg_dumpall --globals-only), and PostgreSQL inside docker
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# containers (image name matching "postgres"). Dumps staged
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# plain (not gzipped — CDC dedup needs uncompressed input).
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# 2. one `restic backup` invocation: the dump dir + every path in
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# the paths file (one index load, one snapshot per night);
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# exclude patterns applied globally.
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# 3. retention — `restic forget --group-by host` (seed-era
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# snapshots have different path sets and must age in one group).
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# Prune/check live in restic-maintenance.sh (weekly).
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#
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# Usage: restic-backup.sh [-r <repo>] [-f <paths-file>] [-d <dump-dir>]
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# [-s <stage>] # stage: dumps|backup|all (default all);
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# # -s backup skips re-dumping (seeding aid)
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#
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# Env from /root/.restic-env (AWS creds, RESTIC_PASSWORD_FILE,
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# RESTIC_CACHE_DIR).
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set -u
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REPO=s3:s3.sbg.io.cloud.ovh.net/restic-data
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PATHS_FILE=/root/scripts/restic-paths
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EXCLUDE_FILE=/root/scripts/restic-nextcloud-exclude
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DB_EXCLUDE_FILE=/root/scripts/plakar-db-exclude # same opt-out list, same format
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DUMP_DIR=/backup/dumps
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LOCKFILE=/run/lock/restic-backup.lock
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ENVFILE=/root/.restic-env
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STAGE=all
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usage() {
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echo "Usage: $0 [-r <repo>] [-f <paths-file>] [-d <dump-dir>] [-s dumps|backup|all]" >&2
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exit 2
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}
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while getopts r:f:d:s: flag; do
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case "${flag}" in
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r) REPO=${OPTARG};;
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f) PATHS_FILE=${OPTARG};;
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d) DUMP_DIR=${OPTARG};;
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s) STAGE=${OPTARG};;
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*) usage;;
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esac
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done
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[ -r "$PATHS_FILE" ] || { echo "paths file $PATHS_FILE not readable" >&2; exit 2; }
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[ -r "$ENVFILE" ] || { echo "env file $ENVFILE not readable" >&2; exit 2; }
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. "$ENVFILE"
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exec 9>"$LOCKFILE"
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if ! flock -n 9; then
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echo "another restic-backup run holds $LOCKFILE, aborting" >&2
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exit 1
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fi
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log() { echo "[$(date '+%F %T')] $*"; }
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excluded() {
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[ -r "$DB_EXCLUDE_FILE" ] && grep -qx "$1" "$DB_EXCLUDE_FILE" \
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&& log "SKIP $1 (listed in $DB_EXCLUDE_FILE)"
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}
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rc=0
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if [ "$STAGE" = all ] || [ "$STAGE" = dumps ]; then
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# incus's own state (instance configs, profiles, devices)
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mkdir -p "$DUMP_DIR/incus"
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incus admin sql global .dump > "$DUMP_DIR/incus/incus-global-db.sql" || rc=1
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incus admin sql local .dump > "$DUMP_DIR/incus/incus-local-db.sql" || rc=1
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# Database dumps, auto-discovered per running container
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PG_LIST="SELECT datname FROM pg_database WHERE NOT datistemplate AND datname <> 'postgres'"
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for ct in $(incus list status=running -c n -f csv); do
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# native MariaDB/MySQL (unix-socket root auth), either binary naming
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mdump=$(incus exec "$ct" -- sh -c 'command -v mariadb-dump || command -v mysqldump' 2>/dev/null)
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mclient=$(incus exec "$ct" -- sh -c 'command -v mariadb || command -v mysql' 2>/dev/null)
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if [ -n "$mdump" ] && [ -n "$mclient" ]; then
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dbs=$(incus exec "$ct" -- "$mclient" -N -B -e 'SHOW DATABASES') \
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|| { echo "listing mariadb databases on $ct failed" >&2; rc=1; dbs=""; }
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for db in $(printf '%s\n' "$dbs" \
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| grep -Ev '^(information_schema|performance_schema|mysql|sys)$'); do
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excluded "$ct/$db" && continue
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log "dump $ct/$db (mariadb)"
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mkdir -p "$DUMP_DIR/mariadb/$ct"
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incus exec "$ct" -- "$mdump" --single-transaction --events --routines --triggers \
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--databases "$db" > "$DUMP_DIR/mariadb/$ct/$db.sql" \
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|| { echo "dump $ct/$db failed" >&2; rc=1; }
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done
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# users + grants: replayable SHOW GRANTS statements
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log "dump $ct/grants (mariadb)"
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incus exec "$ct" -- sh -c "$mclient -NBe \"SELECT CONCAT('SHOW GRANTS FOR ', QUOTE(user), '@', QUOTE(host), ';') FROM mysql.user\" | $mclient -NB | sed 's/\$/;/'" \
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> "$DUMP_DIR/mariadb/$ct/grants.sql" \
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|| { echo "grants dump on $ct failed" >&2; rc=1; }
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elif [ -n "$mdump$mclient" ]; then
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echo "$ct has only one of dump/client mariadb binaries, skipping" >&2; rc=1
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fi
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# native PostgreSQL (peer auth as the postgres user)
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if incus exec "$ct" -- sh -c 'command -v pg_dump' >/dev/null 2>&1; then
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mkdir -p "$DUMP_DIR/postgres/$ct"
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incus exec "$ct" -- su -s /bin/sh postgres -c "pg_dumpall --globals-only" \
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> "$DUMP_DIR/postgres/$ct/globals.sql" || rc=1
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dbs=$(incus exec "$ct" -- su -s /bin/sh postgres -c "psql -AtX -c \"$PG_LIST\"") \
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|| { echo "listing postgres databases on $ct failed" >&2; rc=1; dbs=""; }
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for db in $dbs; do
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excluded "$ct/$db" && continue
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log "dump $ct/$db (postgres)"
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incus exec "$ct" -- su -s /bin/sh postgres -c "pg_dump --clean --if-exists $db" \
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> "$DUMP_DIR/postgres/$ct/$db.sql" \
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|| { echo "dump $ct/$db failed" >&2; rc=1; }
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done
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fi
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# PostgreSQL inside docker (e.g. outline, login)
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incus exec "$ct" -- sh -c 'command -v docker' >/dev/null 2>&1 || continue
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for dc in $(incus exec "$ct" -- docker ps --format '{{.Names}} {{.Image}}' 2>/dev/null \
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| awk 'tolower($2) ~ /postgres/ {print $1}'); do
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pguser=$(incus exec "$ct" -- docker exec "$dc" sh -c 'echo "${POSTGRES_USER:-postgres}"') \
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|| { echo "reading POSTGRES_USER on $ct/$dc failed" >&2; rc=1; continue; }
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mkdir -p "$DUMP_DIR/postgres/$ct/$dc"
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incus exec "$ct" -- docker exec "$dc" pg_dumpall -U "$pguser" --globals-only \
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> "$DUMP_DIR/postgres/$ct/$dc/globals.sql" || rc=1
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dbs=$(incus exec "$ct" -- docker exec "$dc" psql -U "$pguser" -AtX -c "$PG_LIST") \
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|| { echo "listing postgres databases on $ct/$dc failed" >&2; rc=1; dbs=""; }
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for db in $dbs; do
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excluded "$ct/$dc/$db" && continue
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log "dump $ct/$dc/$db (postgres)"
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incus exec "$ct" -- docker exec "$dc" pg_dump -U "$pguser" --clean --if-exists "$db" \
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> "$DUMP_DIR/postgres/$ct/$dc/$db.sql" \
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|| { echo "dump $ct/$dc/$db failed" >&2; rc=1; }
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done
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done
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done
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fi # stage dumps
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if [ "$STAGE" = all ] || [ "$STAGE" = backup ]; then
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log "restic backup -> $REPO"
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restic -r "$REPO" backup \
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--pack-size 64 --read-concurrency 8 -o s3.connections=8 \
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--exclude-file "$EXCLUDE_FILE" \
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--files-from-verbatim "$PATHS_FILE" "$DUMP_DIR" \
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|| { echo "restic backup failed" >&2; rc=1; }
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log "forget: keep 14d/8w/6m"
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restic -r "$REPO" forget --group-by host \
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--keep-daily 14 --keep-weekly 8 --keep-monthly 6 || rc=1
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fi # stage backup
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log "done (rc=$rc)"
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exit $rc
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Executable
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#!/bin/bash
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#
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# Nightly restic backup of the incus instances (repo: restic-incus).
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# For every instance of the `backup` project (quiesced replicas —
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# stopped, refreshed by the 01:00 incus-copy), mount its filesystem
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# with `incus file mount` (FUSE over the per-instance sftp API, works
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# on stopped containers, needs sshfs) and back it up per-file,
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# together with its expanded config.
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#
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# ⚠️ Each instance gets its OWN mountpoint (/run/restic-incus/<name>):
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# restic selects a snapshot's parent by host+path, so a shared
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# mountpoint would parent every snapshot on the previous *other*
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# instance and force nightly full re-reads.
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#
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# Runs CHAINED after incus-copy.sh in the same cron entry — the
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# snapshot is only as fresh as the last completed replica refresh:
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# 0 1 * * * incus-copy.sh -p backup -s backup >> /var/log/incus-copy.log 2>&1 ; restic-incus-backup.sh >> /var/log/restic-incus.log 2>&1
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#
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# Usage: restic-incus-backup.sh [-r <repo>] [-p <project>]
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# [-x <exclude,list>] [-i <only,these>]
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#
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# All instances by default; opt-out via -x (logged loudly — the list
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# cannot rot silently).
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set -u
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REPO=s3:s3.sbg.io.cloud.ovh.net/restic-incus
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PROJECT=backup
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EXCLUDE_INSTANCES="nextcloud,seafile" # seek-bound giants: data covered by restic-data
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ONLY_INSTANCES=""
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MNT_ROOT=/run/restic-incus
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LOCKFILE=/run/lock/restic-incus-backup.lock
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ENVFILE=/root/.restic-env
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MOUNT_TIMEOUT=30
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usage() {
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echo "Usage: $0 [-r <repo>] [-p <project>] [-x <exclude,list>] [-i <only,list>]" >&2
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exit 2
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}
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while getopts r:p:x:i: flag; do
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case "${flag}" in
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r) REPO=${OPTARG};;
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p) PROJECT=${OPTARG};;
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x) EXCLUDE_INSTANCES=${OPTARG};;
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i) ONLY_INSTANCES=${OPTARG};;
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*) usage;;
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esac
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done
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[ -r "$ENVFILE" ] || { echo "env file $ENVFILE not readable" >&2; exit 2; }
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. "$ENVFILE"
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command -v sshfs >/dev/null || { echo "sshfs not installed (needed by incus file mount)" >&2; exit 2; }
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exec 9>"$LOCKFILE"
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if ! flock -n 9; then
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echo "another restic-incus-backup run holds $LOCKFILE, aborting" >&2
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exit 1
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fi
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log() { echo "[$(date '+%F %T')] $*"; }
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cleanup_mount() { # $1 = mountpoint, $2 = mount pid
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[ -n "${2:-}" ] && kill "$2" 2>/dev/null
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for _ in 1 2 3 4 5; do
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mountpoint -q "$1" || return 0
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fusermount -u "$1" 2>/dev/null || umount "$1" 2>/dev/null
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sleep 1
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done
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mountpoint -q "$1" && { echo "failed to unmount $1" >&2; return 1; }
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return 0
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}
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rc=0
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mkdir -p "$MNT_ROOT"
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for inst in $(incus list --project "$PROJECT" -c n -f csv); do
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if [ -n "$ONLY_INSTANCES" ]; then
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case ",$ONLY_INSTANCES," in *",$inst,"*) ;; *) continue;; esac
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fi
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case ",$EXCLUDE_INSTANCES," in
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*",$inst,"*) log "SKIP $inst (excluded)"; continue;;
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esac
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mnt="$MNT_ROOT/$inst"
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mkdir -p "$mnt"
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mountpoint -q "$mnt" && cleanup_mount "$mnt" "" # stale from a killed run
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# instance definition, backed up alongside the tree
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incus config show "$inst" --project "$PROJECT" --expanded > "$MNT_ROOT/$inst.yaml" \
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|| { echo "config dump of $inst failed" >&2; rc=1; }
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incus file mount "$inst/" "$mnt" --project "$PROJECT" >/dev/null 2>&1 &
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mpid=$!
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mounted=""
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for _ in $(seq "$MOUNT_TIMEOUT"); do
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mountpoint -q "$mnt" && { mounted=1; break; }
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kill -0 "$mpid" 2>/dev/null || break
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sleep 1
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done
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if [ -z "$mounted" ]; then
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echo "mount of $inst failed" >&2; rc=1
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cleanup_mount "$mnt" "$mpid"
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continue
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fi
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log "backup $inst"
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restic -r "$REPO" backup \
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--pack-size 64 --read-concurrency 8 -o s3.connections=8 \
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--tag "$inst" "$mnt" "$MNT_ROOT/$inst.yaml" \
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|| { echo "backup of $inst failed" >&2; rc=1; }
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cleanup_mount "$mnt" "$mpid" || rc=1
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done
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log "forget: keep 14d/8w/6m"
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restic -r "$REPO" forget --keep-daily 14 --keep-weekly 8 --keep-monthly 6 || rc=1
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log "done (rc=$rc)"
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exit $rc
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Executable
+53
@@ -0,0 +1,53 @@
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#!/bin/bash
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#
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# Weekly restic maintenance for both repos (Sunday, offset from the
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# nightly backups — prune takes an EXCLUSIVE lock). Per repo:
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# - unlock: clear locks left by crashed runs
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# - prune: --max-unused 10% (our dead-data rate is ~0.1–0.4 GiB/day
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# vs ~1 T repos, so pruning can skip repacking for months) and
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# --max-repack-size 4G (bounds any single Sunday's rewrite to
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# ~10-15 min even after a mass deletion; the rest defers)
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# - check: structure every week, plus a rotating 1/52 data subset —
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# a full verification of every byte once a year
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#
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# Usage: restic-maintenance.sh [-r <repo>[,<repo>...]]
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set -u
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REPOS="s3:s3.sbg.io.cloud.ovh.net/restic-data,s3:s3.sbg.io.cloud.ovh.net/restic-incus"
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LOCKFILE=/run/lock/restic-maintenance.lock
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ENVFILE=/root/.restic-env
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while getopts r: flag; do
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case "${flag}" in
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r) REPOS=${OPTARG};;
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*) echo "Usage: $0 [-r <repo>[,<repo>...]]" >&2; exit 2;;
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esac
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done
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[ -r "$ENVFILE" ] || { echo "env file $ENVFILE not readable" >&2; exit 2; }
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. "$ENVFILE"
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exec 9>"$LOCKFILE"
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if ! flock -n 9; then
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echo "another restic-maintenance run holds $LOCKFILE, aborting" >&2
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exit 1
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fi
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log() { echo "[$(date '+%F %T')] $*"; }
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# rotate the read-data subset weekly: full coverage once a year
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WEEK=$(( ($(date +%s) / 604800) % 52 + 1 ))
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rc=0
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for repo in $(printf '%s' "$REPOS" | tr ',' ' '); do
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log "maintenance: $repo"
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restic -r "$repo" unlock || rc=1
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restic -r "$repo" prune --max-unused 10% --max-repack-size 4G --pack-size 64 || rc=1
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restic -r "$repo" check || rc=1
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log "check --read-data-subset=$WEEK/52"
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restic -r "$repo" check --read-data-subset="$WEEK/52" || rc=1
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done
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log "done (rc=$rc)"
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exit $rc
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@@ -0,0 +1,2 @@
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/var/lib/incus/storage-pools/data/containers/nextcloud/rootfs/nextcloud/data/appdata_*/preview
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/var/lib/incus/storage-pools/data/containers/nextcloud/rootfs/nextcloud/data/appdata_*/dav-photocache
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@@ -0,0 +1,11 @@
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# /root/scripts/restic-paths — one path per line (--files-from-verbatim)
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/var/lib/incus/storage-pools/data/containers/bitwarden/rootfs/opt/bitwarden
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/var/lib/incus/storage-pools/data/containers/gateway/rootfs/var/www
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/var/lib/incus/storage-pools/data/containers/git/rootfs/home/git/projects
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/var/lib/incus/storage-pools/data/containers/login/rootfs/opt/authentik
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/var/lib/incus/storage-pools/data/containers/mail/rootfs/var/vmail
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/var/lib/incus/storage-pools/data/containers/mail/rootfs/var/www
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/var/lib/incus/storage-pools/data/containers/outline/rootfs/var/lib/docker/volumes/outline_storage-data/_data
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/var/lib/incus/storage-pools/data/containers/solar/rootfs/var/www/html/solar
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/var/lib/incus/storage-pools/data/containers/nextcloud/rootfs/nextcloud
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/var/lib/incus/storage-pools/data/containers/seafile/rootfs/opt/seafile
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