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Running with a user (like `matrix:matrix`) fails if Etherpad is enabled, because `/matrix/etherpad` is owned by `matrix_etherpad_user_uid`/`matrix_etherpad_user_gid` (`5001:5001`). The `matrix` user can't acccess the Etherpad directory for this reason and Borgmatic fails when trying to make a backup. There may be other things under `/matrix` which similarly use non-`matrix:matrix` permissions. Another workaround might have been to add `/matrix/etherpad` (and potentially other things) to `matrix_backup_borg_location_exclude_patterns`, but: - that means Etherpad won't be backed up - not great - only excluding Etherpad may not be enough. There may be other files we need to exclude as well --- Running with `root` is still not enough though. We need at least the `CAP_DAC_OVERRIDE` capability, or we won't be able to read the `/etc/borgmatic.d/config.yaml` configuration file (owned by `matrix:matrix` with `0640` permissions). --- Additionally, it seems like the backup process tries to write to at least a few directories: - `/root/.borgmatic` - `/root/.ssh` - `/root/.config` > [Errno 30] Read-only file system: '/root/.borgmatic' > Error while creating a backup. > /etc/borgmatic.d/config.yaml: Error running configuration file We either need to stop mounting the container filesystem as readonly (remove `--read-only`) or to allow writing via a `tmpfs`. I've gone the `tmpfs` route which seems to work. In any case, the mounted source directories (`matrix_backup_borg_location_source_directories`) are read-only regardless, so our actual source files are protected from unintentional changes. |
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| config.yaml.j2 | ||
| passwd.j2 | ||
| sshkey.j2 | ||