43 lines
1.9 KiB
Markdown
43 lines
1.9 KiB
Markdown
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# Backup Methodology
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ayb is working on improving persistence and database streaming, which means that this methodology will change in the future.
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The current backup system has two parts:
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* Daily automatic backups of the hosted databases.
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* Monthly manual off-site backups of the ayb database and the hosted databases.
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## Automatic backups
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A shell script (TODO(sofia): release script) is executed five times a day, this shell script does the following:
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* Attempt to recursively backup hosted databases using a command like this: `sqlite3 username/database.db ".timeout 1000" ".backup bak/username/database-$(date +%s).db.bak"`.
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* Delete backups older than 7 days.
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* Delete backups older than 1 day and whose file size is bigger than 500MB.
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## Off-site backups
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Off-site backups include all of the hosted databases and the ayb database, which means that ayb needs to be taken down in order to close all of the connections.
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A notice will be up three days prior at:
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* [status.sofiaritz.com](https://status.sofiaritz.com)
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* [ayb.sofiaritz.com](https://ayb.sofiaritz.com)
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This notice will contain:
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* The reason of the downtime (off-site backup).
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* The expected downtime (1 to 2 hours).
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* The time of the downtime in UTC.
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When the time comes, the following is done:
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* The instance is taken down.
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* The `ayb_data` folder is tar-gzip-ed.
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* The `ayb_data.tar.gz` file is encrypted using a public key.
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* The encrypted backup is sent to my local machine.
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* The encrypted backup is stored inside an external hard-drive.
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* This hard-drive is stored inside a safe.
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* The private key is stored inside another hard-drive located at another physical location.
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* The encrypted backup in my local machine is deleted.
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* The encrypted backup in the server is deleted.
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* The tar-gzip-ed backup in the server is deleted.
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* The instance is started.
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* When everything is up and running, the notices are removed.
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This will be partially automated in the future, right now this process is completely manual.
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