-
Notifications
You must be signed in to change notification settings - Fork 1
/
backup.sh
executable file
·82 lines (67 loc) · 2.03 KB
/
backup.sh
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
#!/bin/bash
ATTIC_CACHE="${ATTIC_CACHE:-$HOME/.cache}"
ATTIC_KEYS="${ATTIC_KEYS:-$HOME/.attic}"
BACKUP_PATHS="${BACKUP_PATHS:-.}"
BACKUP_ROOT="${BACKUP_ROOT:-/}"
EXCLUDES="${EXCLUDES:-}"
KEEP_DAILY=${KEEP_DAILY:-2}
SSHFS_OPTIONS="${SSHFS_OPTIONS:--o reconnect -o auto_cache -o cache=yes -o cache_timeout=180 -o kernel_cache -o compression=no -o big_writes -o Ciphers=arcfour}"
SSH_ID="${SSH_ID:-$HOME/.ssh/id_rsa}"
SSH_KNOWN_HOSTS="${SSH_KNOWN_HOSTS:-$HOME/.ssh/known_hosts}"
if [ "$1" == "env" ]; then
return
fi
# http://stackoverflow.com/a/3572105/76900
abspath() {
[[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"
}
set -e
if [ "$#" -lt 1 ]; then
>&2 echo "Usage: $0 <command>"
exit 1
fi
if [ ! -f "$SSH_KNOWN_HOSTS" ]; then
>&2 echo "Error: unable to read $SSH_KNOWN_HOSTS."
exit 1
fi
if [ ! -f "$SSH_ID" ]; then
>&2 echo "Error: unable to read $SSH_ID."
exit 1
fi
BACKUP_MOUNT_FLAGS="ro"
if [[ "$1" == "extract" ]]; then
BACKUP_ROOT="$3"
mkdir -p "$BACKUP_ROOT"
BACKUP_MOUNT_FLAGS="rw"
fi
ATTIC_KEYS_MOUNT_FLAGS="ro"
if [[ "$1" == "init" ]]; then
ATTIC_KEYS_MOUNT_FLAGS="rw"
fi
# -v doesn't handle relative paths.
ATTIC_CACHE=$(abspath "$ATTIC_CACHE")
ATTIC_KEYS=$(abspath "$ATTIC_KEYS")
BACKUP_ROOT=$(abspath "$BACKUP_ROOT")
SSH_ID=$(abspath "$SSH_ID")
SSH_KNOWN_HOSTS=$(abspath "$SSH_KNOWN_HOSTS")
mkdir -p "$ATTIC_CACHE"
mkdir -p "$ATTIC_KEYS"
docker run \
--privileged --device=/dev/fuse \
--name backuper \
--rm \
-v "$SSH_KNOWN_HOSTS":/known_hosts:ro \
-v "$SSH_ID":/id_rsa:ro \
-v "$ATTIC_KEYS":/root/.attic:"$ATTIC_KEYS_MOUNT_FLAGS" \
-v "$ATTIC_CACHE":/root/.cache:rw \
-v "$BACKUP_ROOT":/b:"$BACKUP_MOUNT_FLAGS" \
-e KEEP_DAILY="$KEEP_DAILY" \
-e SSH_PATH="$SSH_PATH" \
-e BACKUP_PATHS="$BACKUP_PATHS" \
-e EXCLUDES="$EXCLUDES" \
-e SSHFS_OPTIONS="$SSHFS_OPTIONS" \
-e PYTHONUNBUFFERED=1 \
aljungberg/revetment run.sh $@
if [[ "$1" == "init" ]]; then
echo "Back up the encryption key(s) in '$ATTIC_KEYS' or the backup will be unreadable."
fi