This guide details how to back up data from your Web hosting (Starter, shared or Serveur Cloud) using the application restic via the OpenStack Swift protocol on Swiss Backup, an independent Swiss cloud backup solution.

Other solutions exist to back up your web data: check out this other guide.

Prerequisites

• Use a Web Hosting.
• Have a Swiss Backup Infomaniak space with at least one available device quota for a Cloud backup.
• Add 1 device of type Cloud to obtain the OpenStack Swift parameters.

Install Restic

For this:

1. Download the linux_amd64 binary from the restic github repository:

   uid@h2web:~$ wget -O restic.bz2 https://github.com/restic/restic/releases/download/v0.14.0/restic_0.14.0_linux_amd64.bz2

   ⚠️ The download link may change with the release of a new version; version 0.14 uses default compression.

2. Unzip the archive and make the binary executable:

   uid@h2web:~$ bunzip2 restic.bz2
   uid@h2web:~$ chmod +x restic

Set up Restic

Creation of an encryption key to encrypt the data

• The key cannot be changed and if lost, the data will no longer be readable.
• Place this key in a file readable by Restic.

• Example of key generation:

  uid@h2web:~$ openssl rand -base64 16 > restickey	

Configuration of restic

To configure the backup:

1. Create a file resticconfig with the following content to be adapted according to the information specific to your device:

   echo "export OS_AUTH_URL=https://swiss-backupXX.infomaniak.com/identity/v3
   export OS_REGION_NAME=RegionOne
   export OS_PROJECT_NAME=sb_project_SBI-XXXX
   export OS_PASSWORD=''
   export OS_USER_DOMAIN_NAME=default
   export OS_USERNAME=SBI-XXXX
   export OS_PROJECT_DOMAIN_NAME=default
   export RESTIC_REPOSITORY=swift:sb_project_SBI-XXXX:/
   export RESTIC_PASSWORD_FILE=restickey" > resticconf

   • OS_AUTH_URL URL to access the Swiss Backup cluster (1)
   • OS_PROJECT_NAME and OS_USERNAME replace SBI-XXXX with your identifier
   • OS_PASSWORD replace with the password generated upon activation
   • RESTIC_REPOSITORY
     1. replace SBI-XXXX with your identifier
     2. replace the bucket name with the name you want to give to your container that stores the backups
   • RESTIC_PASSWORD_FILE replace with the full path to the file containing the encryption key

2. Load the Restic configuration by running the following command:

   source resticconf	

3. Initialize the bucket with the following command:

   uid@h2:~$ ./restic -r $RESTIC_REPOSITORY init	

Back up your files

To back up your files, simply run the following command:

uid@h2:~$ ./restic backup
#exemple pour sauvegarder l'ensemble d'un hébergement
uid@h2:~$ ./restic backup ./
#exemple pour sauvegarder le dossier sites
uid@h2:~$ ./restic backup sites/

The first snapshot takes a long time (several hours depending on the amount of data) because all files are copied, while subsequent ones will use the differential principle.

Backup the databases

Restic can read data from stdin to record a program's output.

Use the following command to back up an individual MySQL database:

mysqldump --databases nom_de_la_base_de_données -u utilisateur_de_la_base_de_données -p | restic backup --stdin --stdin-filename database_dump.sql	

To back up all databases, run the mysqldump command to extract all databases from the server, then redirect the output to Restic:

mysqldump -u utilisateur_de_la_base_de_données -p --all-databases | restic backup --stdin --stdin-filename all_databases.sql	

List backups

To list your backups, you can use the following command:

uid@h2:~$ ./restic snapshots	

Restore a backup

You can restore a backup with the following command:

uid@h2:~$ ./restic restore  --target 	

Automate

On Cloud Server, it is possible to add a cron job to automate the launch of the backup. 

On shared hosting, this option is not available.