moving everything to active or retired vs incubating and graduated
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72
active/systemd_borg/borg.md
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72
active/systemd_borg/borg.md
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# Borg Backup
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## Server Setup
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<https://borgbackup.readthedocs.io/en/stable/deployment/central-backup-server.html#user-and-group>
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User: backup
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Group: backup
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Shell: /bin/bash (or other capable to run the borg serve command)
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Home: /home/backup
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```bash
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dnf install borgbackup
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useradd backup
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mkdir /home/backup/.ssh
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touch /home/backup/.ssh/authorized_keys
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chown -R backup:backup /home/backup/.ssh
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```
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### Adding a Client
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Note: See [adding nextcloud](#adding-nextcloud) for nextcloud instructions here.
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```bash
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export BACKUP_HOST=""
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ssh-keygen -C backup@${BACKUP_HOST} -f ~/.ssh/id_${BACKUP_HOST}
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cat <<EOF >> ~/.ssh/config
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Host ${BACKUP_HOST}
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Hostname ${BACKUP_HOST}
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IdentityFile ~/.ssh/id_${BACKUP_HOST}
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User backup
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Port 22
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KeepAlive yes
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EOF
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```
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Now on the server:
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```bash
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export CLIENT_FQDN=""
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# Should look like ssh-rsa abcd1234 backup@fqdn.something.com
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export SSH_PUBKEY=""
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export AUTHKEY_ENTRY="command=\"cd /home/backup/repos/${CLIENT_FQDN}; borg serve --restrict-to-path /home/backup/repos/${CLIENT_FQDN}\",restrict ${SSH_PUBKEY}"
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echo $AUTHKEY_ENTRY >> /home/backup/.ssh/authorized_keys
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mkdir /home/backup/repos/${CLIENT_FQDN}
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chown backup:backup /home/backup/repos/${CLIENT_FQDN}
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```
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Then back on the client:
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```bash
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ssh borg.reeselink.com
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borg init --encryption none backup@${BACKUP_HOST}:root
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```
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#### Adding Nextcloud
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Rather than creating a client, just set the borg backup location to:
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```text
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backup@borg.reeselink.com:nextcloud
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```
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Then run the backup. It will generate a pubkey. Copy this into the authorized_keys file.
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0
active/systemd_borg/borg.service
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0
active/systemd_borg/borg.service
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75
active/systemd_borg/borg.sh
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75
active/systemd_borg/borg.sh
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#!/bin/sh
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export BACKUP_HOST=driveripper.reeselink.com
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sshfs ${BACKUP_HOST}:backup /backup
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# Setting this, so the repo does not need to be given on the commandline:
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export BORG_REPO='/backup'
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# some helpers and error handling:
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info() { printf "\n%s %s\n\n" "$( date )" "$*" >&2; }
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trap 'echo $( date ) Backup interrupted >&2; exit 2' INT TERM
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info "Starting backup"
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# Backup the most important directories into an archive named after
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# the machine this script is currently running on:
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borg create \
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--verbose \
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--filter AME \
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--list \
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--stats \
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--show-rc \
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--compression none \
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--exclude-caches \
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--exclude 'home/*/.cache/*' \
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--exclude 'var/tmp/*' \
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\
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::'{hostname}-{now}' \
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/etc \
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/home \
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/root \
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/var
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backup_exit=$?
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info "Pruning repository"
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# Use the `prune` subcommand to maintain 7 daily, 4 weekly and 6 monthly
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# archives of THIS machine. The '{hostname}-*' matching is very important to
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# limit prune's operation to this machine's archives and not apply to
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# other machines' archives also:
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borg prune \
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--list \
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--glob-archives '{hostname}-*' \
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--show-rc \
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--keep-daily 7 \
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--keep-weekly 2 \
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--keep-monthly 1
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prune_exit=$?
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# actually free repo disk space by compacting segments
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info "Compacting repository"
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borg compact
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compact_exit=$?
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# use highest exit code as global exit code
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global_exit=$(( backup_exit > prune_exit ? backup_exit : prune_exit ))
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global_exit=$(( compact_exit > global_exit ? compact_exit : global_exit ))
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if [ ${global_exit} -eq 0 ]; then
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info "Backup, Prune, and Compact finished successfully"
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elif [ ${global_exit} -eq 1 ]; then
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info "Backup, Prune, and/or Compact finished with warnings"
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else
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info "Backup, Prune, and/or Compact finished with errors"
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fi
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fusermount -u /backup
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exit ${global_exit}
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0
active/systemd_borg/borg.timer
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0
active/systemd_borg/borg.timer
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