add restore script

Author: tifayuki

README.md

@@ -27,3 +27,13 @@ Moreover, if you link `tutum/mongodb-backup` to a mongodb container(e.g. `tutum/
     EXTRA_OPTS      the extra options to pass to mongodump command
     CRON_TIME       the interval of cron job to run mongodump. `0 0 * * *` by default, which is every day at 00:00
     MAX_BACKUPS     the number of backups to keep. When reaching the limit, the old backup will be discarded. No limit, by default
+
+## Restore from a backup
+
+See the list of backups, you can run:
+
+    docker exec tutum-backup ls /backup
+
+To restore database from a certain backup, simply run:
+
+    docker exec tutum-backup /restore.sh /backup/2015.08.06.171901

run.sh

@@ -21,6 +21,7 @@ BACKUP_CMD="mongodump --out /backup/"'$(date +\%Y.\%m.\%d.\%H\%M\%S)'" --host ${
 
 
 echo "=> Creating backup script"
+rm -f /backup.sh
 cat <<EOF >> /backup.sh
 #!/bin/bash
 MAX_BACKUPS=${MAX_BACKUPS}
@@ -39,6 +40,16 @@ echo "=> Backup done"
 EOF
 chmod +x /backup.sh
 
+echo "=> Creating restore script"
+rm -f /restore.sh
+cat <<EOF >> /restore.sh
+#!/bin/bash
+echo "=> Restore database from \$1"
+mongorestore --host ${MONGODB_HOST} --port ${MONGODB_PORT} ${USER_STR}${PASS_STR} \$1
+echo "=> Done"
+EOF
+chmod +x /restore.sh
+
 echo "${CRON_TIME} /backup.sh >> /mongo_backup.log 2>&1" > /crontab.conf
 echo "=> Adding cron job"
 crontab  /crontab.conf