Managing backup and restore of MongoDB

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Issue: fabmob/e-mission-phone-fabmob#29

Actual configuration

Since July 22, 2019, every Monday at 6 AM, a script will perform a backup of Stage_database into /var/emission/backup/. The backup will be compressed in .gzip and will be named Stage_database-<date>.gzip.

How to backup manually

We can use the command mongodump to backup all the databases of MongoDB. However, the database might be pretty heavy so it might be interesting to compress the backup. We can compress the backup file using --gzip --archive=archivenameoptions.

$ mongodump --gzip --archive=archivename`

How to backup using the script

To backup using mongo_backup_weekly.py we can specify two arguments the output path and the database to backup. If there is no arguments or only one, the script will use a default configuration (Stage_databasefor the database and /var/emission/backup for the output file). We can use the script as below:

$ python mongo_backup_weekly.py -o /var/emission/backup/ -d Stage_database

The output file will be compressed.

How to restore

To restore the database, we will use the command mongorestore with the same argument as the mongodump command.

$ mongorestore --gzip --archive=archivename --drop

The --drop is optional but useful if we want a clean restore.