first commit

incus-backup.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+#
+# Backup instances FS and DBs to a remote location using rsync over ssh.
+#
+
+while getopts d:u:i:p:f:s: flag
+do
+    case "${flag}" in
+        d) DEST=${OPTARG};;
+        u) USER=${OPTARG};;
+        i) SSH_KEY=${OPTARG};;
+        p) SSH_PORT=${OPTARG};;
+        f) DB_FILE=${OPTARG};;
+        s) STORAGE_POOL=${OPTARG};;
+    esac
+done
+
+HOST=$(hostname -s)
+BKP_DIR="/backup/${HOST}"
+SSH_CMD="ssh -i ${SSH_KEY} -p ${SSH_PORT}"
+CT_PREFIX="/var/lib/incus/storage-pools/${STORAGE_POOL}/containers"
+
+
+# Backup incus DB
+/usr/bin/incus admin sql local .dump | ${SSH_CMD} ${USER}@${DEST} "cat - > ${BKP_DIR}/incus-local-db.sql"
+/usr/bin/incus admin sql global .dump | ${SSH_CMD} ${USER}@${DEST} "cat - > ${BKP_DIR}/incus-global-db.sql"
+
+for CT in $(cat ${DB_FILE} | jq -r 'keys[]') ; do
+    SRC_DIR="${CT_PREFIX}/${CT}"
+    DST_DIR="${BKP_DIR}/${CT}"
+
+    # Backup container info
+    if [ -f "${SRC_DIR}/backup.yaml" ] ; then
+        echo "[$(date '+%Y-%m-%d %H:%M:%S')] Starting $CT backup.yaml"
+        /usr/bin/rsync -a --del -e "${SSH_CMD}" ${SRC_DIR}/backup.yaml ${USER}@${DEST}:${DST_DIR}/
+    fi
+
+    # Backup Mysql dumps
+    for DB in $(cat $DB_FILE | jq -r ".${CT} | select(.DB != null) | .DB[]") ; do
+        echo "[$(date '+%Y-%m-%d %H:%M:%S')] Starting $CT $DB database backup"
+        /usr/bin/incus exec -n $CT -- mariadb-dump --single-transaction --databases ${DB} | ${SSH_CMD} ${USER}@${DEST} "mkdir -p ${DST_DIR} ; cat - > ${DST_DIR}/mysql-${DB}.sql"
+    done
+
+    # Backup container rootfs paths 
+    for FS in $(cat $DB_FILE | jq -r ".${CT} | select(.FS != null) | .FS[]") ; do
+        # Skip missing rootfs dir
+        if [ ! -d ${SRC_DIR}/rootfs ] ; then
+            echo "[$(date '+%Y-%m-%d %H:%M:%S')] WARNING : Missing rootfs for container ${CT}, skipping FS ${FS} ..."
+            continue
+        fi
+	    # "/." used by rsync to limit the amount of path information that is sent as implied directories
+        echo "[$(date '+%Y-%m-%d %H:%M:%S')] Starting $CT $FS filesystem backup"
+	    /usr/bin/rsync -aR --del -e "${SSH_CMD}" ${SRC_DIR}/rootfs/.${FS} ${USER}@${DEST}:${DST_DIR}/
+    done
+done