Perform daily backups. Close #22

This commit is contained in:
genofire 2021-01-31 20:25:31 +01:00
parent 03c34b1216
commit 060ba82d42
10 changed files with 295 additions and 0 deletions

8
restic.yml Normal file
View File

@ -0,0 +1,8 @@
---
- hosts:
- mail
become: yes
roles:
- restic

View File

@ -0,0 +1,11 @@
---
- name: Reload s6-rc
service:
name: s6-rc
state: reloaded
- name: Restart restic
command: s6-svc -wU -T 5000 -ru /run/service/restic
- name: Restart restic-log
command: s6-svc -wU -T 5000 -ru /run/service/restic-log

View File

@ -0,0 +1,69 @@
---
- name: Install restic and snooze
package:
name:
- restic
- snooze
state: present
notify:
- Restart restic
- name: Create restic service directories
file:
path: '/etc/s6-rc/service/{{ item }}'
state: directory
owner: root
group: wheel
mode: 0755
with_items: '{{ restic_service_dirs }}'
notify:
- Reload s6-rc
- Restart restic
- Restart restic-log
- name: Generate restic service scripts
template:
dest: '/etc/s6-rc/service/{{ item }}'
src: '{{ item }}.j2'
mode: 0555
owner: root
group: wheel
with_items: '{{ restic_service_scripts }}'
notify:
- Reload s6-rc
- Restart restic
- Restart restic-log
- name: Generate restic service configuration
copy:
dest: '/etc/s6-rc/service/{{ item.name }}'
content: '{{ item.content }}'
mode: 0444
owner: root
group: wheel
loop_control:
label: '{{ item.name }} = {{ item.content }}'
with_items: '{{ restic_service_config }}'
notify:
- Reload s6-rc
- Restart restic
- Restart restic-log
- name: Flush handlers
meta: flush_handlers
- name: Start restic renew service
command: fdmove -c 2 1 s6-rc -u -v 2 change restic
register: change
changed_when: change.stdout | length > 0
- name: Enable restic
lineinfile:
path: /etc/s6-rc/service/enabled/contents
regexp: "^restic$"
line: "restic"
notify:
- Reload s6-rc
- name: Flush handlers (again)
meta: flush_handlers

View File

@ -0,0 +1,13 @@
#!/usr/local/bin/execlineb -S2
# {{ ansible_managed }}
s6-envdir ./env
multisubstitute {
importas -i -u NAME NAME
}
fdmove -c 1 2
ifelse { test "${1}" -eq 0 } {
echo "${NAME}: Stopped."
}
echo "${NAME}: Failed with exit status (${1}, ${2})."

View File

@ -0,0 +1,23 @@
#!/usr/local/bin/execlineb -P
# {{ ansible_managed }}
s6-envdir ./env
multisubstitute {
importas -i -u NAME NAME
importas -i -u USER USER
importas -i -u GROUP GROUP
importas -i -u MODE MODE
importas -i -u DIR DIR
}
foreground { fdmove -c 1 2 echo "${NAME} log: Starting." }
ifelse -n { install -d -o "${USER}" -g "${GROUP}" -m "${MODE}" "$DIR" } {
foreground { fdmove -c 1 2 echo "${NAME} log: Failed to create logging directory." }
false
}
fdmove -c 2 1
s6-envuidgid $USER
s6-log -d 3 T $DIR

View File

@ -0,0 +1,97 @@
#!/bin/sh
# {{ ansible_managed }}
# Configure restic through environment variables.
export RESTIC_PASSWORD_FILE="/root/.restic.pass"
export RESTIC_REPOSITORY_FILE="/root/.restic.repo"
export GOMAXPROCS=3
indent() {
sed 's/^/ /'
}
# Ask the kernel for a list of all ZFS filesystems.
FS_LIST="$(zfs list -H -t filesystem -o name)"
# Back up all mounted ZFS file systems with restic one at a time.
echo "Backing up ZFS filesystems:"
for FS in $FS_LIST
do
echo # Seperate the file systems by empty lines (for human consumption)
# Because scripts shouldn't meddle in the system configuration we
# have to skip over unmounted file systems.
MNT="$(zfs get -H -t filesystem -o value mountpoint "$FS")"
case "$MNT" in
/*)
echo "* The file system \"$FS\" is mounted at \"$MNT\"."
;;
*)
echo "* Skipping \"$FS\" (no valid mountpoint)."
continue
;;
esac
if [ "$(zfs get -H -o value mounted "$FS")" = "no" ]
then
echo "* Skipping \"$FS\" (not mounted)."
continue
fi
# Clean up if the previous run failed
if [ -e "$MNT/.zfs/snapshot/restic" ]
then
echo "* Deleting stale restic snapshot of \"$FS\"."
zfs destroy -v "$FS@restic" 2>&1 | indent
fi
# It's important to backup from a snapshot to get a consistent backup.
echo "* Taking ZFS snapshot of \"$FS\"."
zfs snapshot "$FS@restic" 2>&1 | indent
# Finally backup the filesystem to a (remote) restic repo.
echo "* Backing up \"$FS\"."
nice -n 15 restic backup "$MNT/.zfs/snapshot/restic" 2>&1 | indent
# Clean up the ZFS snapshot.
echo "* Deleting ZFS snapshot of \"$FS\"."
zfs destroy -v "$FS@restic" 2>&1 | indent
done
echo
echo
# Ask the kernel for a list of all ZFS volumes.
VOL_LIST="$(zfs list -H -t volume -o name)"
echo "Backing up ZFS volumes:"
for VOL in $VOL_LIST
do
echo
if [ -e "/dev/zvol/$VOL@restic" ]
then
echo "* Deleting stale restic snapshot of \"$VOL\"."
zfs destroy -v "$VOL@restic" 2>&1 | indent
fi
echo "* Taking ZFS snapshot of \"$VOL\"."
zfs snapshot "$VOL@restic" 2>&1 | indent
echo "* Backing up \"$VOL\"."
buffer -s128k -m 128m -i "/dev/zvol/$VOL@restic" | nice -n 15 restic backup --stdin --stdin-filename "$VOL" 2>&1 | indent
echo "$ Deleting ZFS snapshot of \"$VOL\"."
zfs destroy -v "$VOL@restic" 2>&1 | indent
done
echo
echo
echo
# Delete old backups
echo "* Thin out older backups."
restic forget --keep-yearly 3 --keep-monthly 12 --keep-weekly 13 --keep-daily 31 2>&1 | indent
echo "* Prune unreferenced data from the repository."
restic prune 2>&1 | indent

View File

@ -0,0 +1,14 @@
#!/usr/local/bin/execlineb -S2
# {{ ansible_managed }}
s6-envdir ./env
multisubstitute {
importas -i -u NAME NAME
}
fdmove -c 1 2
ifelse { test "${1}" -eq 0 } {
echo "${NAME}: Stopped."
}
echo "${NAME}: Failed with exit status (${1}, ${2})."

View File

@ -0,0 +1,12 @@
#!/usr/local/bin/execlineb -P
# {{ ansible_managed }}
s6-envdir ./env
multisubstitute {
importas -i -u NAME NAME
}
foreground { fdmove -c 1 2 echo "${NAME}: Starting." }
fdmove -c 2 1
snooze -v data/job

View File

@ -0,0 +1,47 @@
---
restic_service_dirs:
- restic
- restic/env
- restic/data
- restic-log
- restic-log/env
restic_service_scripts:
- restic/run
- restic/finish
- restic/data/job
- restic-log/run
- restic-log/finish
restic_service_config:
- name: restic/type
content: longrun
- name: restic/dependencies
content: postfix
- name: restic/env/HOME
content: /root
- name: restic/env/NAME
content: restic
- name: restic/env/PATH
content: /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
- name: restic/producer-for
content: restic-log
- name: restic-log/type
content: longrun
- name: restic-log/notification-fd
content: '3'
- name: restic-log/consumer-for
content: restic
- name: restic-log/env/NAME
content: restic
- name: restic-log/env/PATH
content: /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
- name: restic-log/env/MODE
content: '750'
- name: restic-log/env/USER
content: s6-log
- name: restic-log/env/GROUP
content: s6-log
- name: restic-log/env/DIR
content: /var/log/restic

View File

@ -5,3 +5,4 @@
- import_playbook: haproxy.yml
- import_playbook: bhyve.yml
- import_playbook: mail.yml
- import_playbook: restic.yml