Difference between revisions of "Service/backup"
| (25 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
== Locations == | == Locations == | ||
| − | * | + | * /backup on [[Machine/papert]]: daily filesystem backups for [[Machine/bender]] and [[Machine/sunjammer]] |
| − | + | * /backup on [[Machine/bender]]: daily filesystem backups for all VMs hosted on [[Machine/papert]] | |
| − | * /backup on | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | [[Machine/ | ||
| − | |||
== Administrative contact == | == Administrative contact == | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
* [[User:Bernie|Bernie Innocenti]] | * [[User:Bernie|Bernie Innocenti]] | ||
| + | == wizbackup == | ||
| − | + | * [https://codewiz.org/gitweb/wizbackup.git Source code] | |
| − | + | * [https://codewiz.org/gitweb/wizbackup.git/blob/HEAD:/README.md README] | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | * | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | + | This is the main backup script for all [[Machine|Sugar Labs Machines]]. It's a minimalist script based on rsync and keeps a history of N days using hard-links. While it's very very simple, wizbackup gets the job done and has the added benefit of not requiring any tools to read or restore a backup. The advantage over similar backup solution is that backups are just plain filesystem snapshots of the source machines; the main disadvantage is poor performance with large files which change often, such as logs or databases (my solution is to exclude these and backup the data using ad-hoc methods, such as SQL dumps). | |
| + | The `wizbackup-driver` script runs daily on the backup servers from `/etc/cron.daily/wizbackup`. | ||
| + | It reads a list of hostnames to backup from `/backup/HOSTS/<machine-group-name>` and an optional list of files exclusions from `/backup/EXCLUDES`, in the same format taken by the `--exclude` flag of rsync. | ||
| + | For each machine in the list, `wizbackup-driver` invokes `wizbackup` with this command-line: | ||
| − | + | wizbackup <hostname>:/ <local-backup-dir> --exclude-file /backup/EXCLUDE/ALWAYS --exclude-file /backup/EXCLUDE/<hostname> | |
| − | + | Wizbackup uses rsync and ssh to connect to the remote machine. Hence, the backup server must be authorized to connect as root to all backup hosts (e.g.: by storing the identity in `/root/.ssh/authorized_keys`). Wizbackup reads the ssh private key from `/etc/wizbackup/ssh_id`). | |
[[Category:Service|zzz]] | [[Category:Service|zzz]] | ||
Latest revision as of 15:09, 2 July 2024
Locations
- /backup on Machine/papert: daily filesystem backups for Machine/bender and Machine/sunjammer
- /backup on Machine/bender: daily filesystem backups for all VMs hosted on Machine/papert
Administrative contact
wizbackup
This is the main backup script for all Sugar Labs Machines. It's a minimalist script based on rsync and keeps a history of N days using hard-links. While it's very very simple, wizbackup gets the job done and has the added benefit of not requiring any tools to read or restore a backup. The advantage over similar backup solution is that backups are just plain filesystem snapshots of the source machines; the main disadvantage is poor performance with large files which change often, such as logs or databases (my solution is to exclude these and backup the data using ad-hoc methods, such as SQL dumps).
The `wizbackup-driver` script runs daily on the backup servers from `/etc/cron.daily/wizbackup`. It reads a list of hostnames to backup from `/backup/HOSTS/<machine-group-name>` and an optional list of files exclusions from `/backup/EXCLUDES`, in the same format taken by the `--exclude` flag of rsync.
For each machine in the list, `wizbackup-driver` invokes `wizbackup` with this command-line:
wizbackup <hostname>:/ <local-backup-dir> --exclude-file /backup/EXCLUDE/ALWAYS --exclude-file /backup/EXCLUDE/<hostname>
Wizbackup uses rsync and ssh to connect to the remote machine. Hence, the backup server must be authorized to connect as root to all backup hosts (e.g.: by storing the identity in `/root/.ssh/authorized_keys`). Wizbackup reads the ssh private key from `/etc/wizbackup/ssh_id`).