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jobs: rework the backup script

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This commit is contained in:
Michele Guerini Rocco 2022-10-12 10:52:40 +02:00
parent 267b6c6d39
commit 0712e0666f
Signed by: rnhmjoj
GPG Key ID: BFBAF4C975F76450
1 changed files with 88 additions and 79 deletions
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jobs.nix
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@ -45,64 +45,73 @@ systemd.services.ydns = {
}; };
systemd.services.backup = { systemd.services.backup =
description = "run system backup"; let
saved = ''
/etc/lvm
/var/lib
/home
'';
excluded = ''
/var/lib/systemd
/var/lib/udisks2
/var/lib/postgresql
/var/lib/matrix-synapse/media_store/url_cache
/var/lib/matrix-synapse/media_store/url_cache_thumbnails
'';
in {
description = "system backup";
after = [ "network-online.target" ]; after = [ "network-online.target" ];
startAt = "weekly"; startAt = "weekly";
serviceConfig.Type = "oneshot"; serviceConfig = {
Type = "oneshot";
path = with pkgs; [ bup git nfs-utils ]; PrivateTmp = true;
LimitNOFILE = 65536;
};
environment.BUP_DIR = "/mnt/backup"; environment.BUP_DIR = "/mnt/backup";
path = with pkgs; [ bup git nfs-utils sudo gzip postgresql ];
script = '' script = ''
${pkgs.fish}/bin/fish << 'EOF' set -e
set locations \ # mount repository
/etc/lvm \ mkdir -p "$BUP_DIR"
/etc/nixos \ mount.nfs -o nolock 192.168.1.3:/maxwell "$BUP_DIR"
/var/lib \
/home
set excluded \
/var/lib/alsa \
/var/lib/systemd \
/var/lib/udisks2 \
/var/lib/udev \
/var/lib/postgresql
# mount NFS share
mkdir -p $BUP_DIR
mount.nfs -o nolock 192.168.1.3:/maxwell $BUP_DIR
# check if properly mounted
if not mountpoint -q $BUP_DIR
echo mount failed! 1>&2
exit 1
end
# init backup # init backup
if not test -e $BUP_DIR/bupindex ! test -e $BUP_DIR/bupindex && bup init
bup init
end
# build indices and copy # build indices and save
for i in $locations saved=${pkgs.writeText "backup-saved" saved}
eval bup index $i --exclude=(string join " --exclude=" $excluded) excluded=${pkgs.writeText "backup-excluded" excluded}
bup save -n (basename $i) $i while read -r dir; do
end name=$(basename "$dir")
echo indexing $name...
bup index "$dir" --exclude-from="$excluded"
echo done
echo saving $name...
bup save -n "$name" "$dir"
echo done
done < "$saved"
# postgresql backup # postgresql backup
set dir /var/lib/postgresql-backup dir=/tmp/postgresql
mkdir -p $dir mkdir -p "$dir"
sudo -u postgres pg_dumpall | gzip > $dir/db.bak
bup index $dir
bup save -n postgresql $dir
rm -rf $dir
umount /mnt/backup echo dumping databases...
EOF sudo -u postgres pg_dumpall | gzip > "$dir"/db.bak
echo done
echo saving...
bup index "$dir"
bup save -n postgresql "$dir" --strip-path=/tmp
echo done
''; '';
}; };