struct(RESTORE): remove borg integration

- require backup already downloaded/copied on local system
- removes need for borg
- far reduced complexity
This commit is contained in:
Asif Bacchus 2021-02-08 08:15:46 -07:00
parent eadba0bee9
commit 7ce419d3eb

View File

@ -5,7 +5,7 @@
### this assumes three things:
### 1. standard mailcow-dockerized setup as per the docs
### 2. backups made using the backup script from this git repo
### 3. backups successfully written to your borg repo
### 3. backups already downloaded from your borg repo
#######
### text-formatting presets
@ -36,18 +36,6 @@ trap trapExit 1 2 3 6
### functions
badDetails() {
if [ "$1" = 'empty' ]; then
writeLog 'done' 'error'
writeLog 'error' '10' "details:${2} cannot be blank/empty."
exitError 130
elif [ "$1" = 'dne' ]; then
writeLog 'done' 'error'
writeLog 'error' '11' "details:${2} file or directory does not exist."
exitError 131
fi
}
consoleError() {
printf "\n%s%s\n" "$err" "$2"
printf "Exiting.\n\n%s" "$norm"
@ -127,7 +115,6 @@ writeLog() {
# script related
scriptPath="$(CDPATH='' cd -- "$(dirname -- "$0")" && pwd -P)"
scriptName="$(basename "$0")"
configDetails="$scriptPath/${scriptName%.*}.details"
errorCount=0
warnCount=0
backupLocation=""
@ -136,6 +123,7 @@ restoreSQL=1
restorePostfix=1
restoreRedis=1
restoreRspamd=1
verbose=0
# logfile default: same location and name as script but with '.log' extension
logfile="$scriptPath/${scriptName%.*}.log"
# mailcow/docker related
@ -165,21 +153,7 @@ while [ $# -gt 0 ]; do
shift
;;
-v|--verbose)
# set verbose logging from borg
borgParams='--list'
;;
-c|--config|--details)
# location of configuration details file
if [ -n "$2" ]; then
if [ -f "$2" ]; then
configDetails=${2%/}
shift
else
consoleError '1' "$1: configuration file ($2) does not exist."
fi
else
consoleError '1' "$1: cannot be blank/empty."
fi
verbose=1
;;
-d|--docker-compose)
# FULL path to docker-compose file
@ -267,14 +241,6 @@ export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
if ! command -v docker >/dev/null; then
consoleError '3' 'docker does not seem to be installed!'
fi
# borg installed?
if ! command -v borg >/dev/null; then
consoleError '3' 'borgbackup does not seem to be installed!'
fi
# details file?
if [ ! -f "$configDetails" ]; then
consoleError '1' "configuration file ($configDetails) cannot be found."
fi
# mailcow.conf?
if [ ! -f "$mcConfig" ]; then
consoleError '1' "mailcow configuration file ($mcConfig) cannot be found."
@ -335,104 +301,11 @@ dockerVolumeCrypt=$(docker volume inspect -f '{{ .Mountpoint }}' ${COMPOSE_PROJE
printf "%s[%s] -- [INFO] Using MAILCRYPT volume: %s --%s\n" \
"$cyan" "$(stamp)" "$dockerVolumeCrypt" "$norm" >>"$logfile"
### source configuration details file
case "${configDetails}" in
/*)
# absolute path, no need to rewrite variable
# shellcheck source=./backup.details
. "${configDetails}"
;;
*)
# relative path, prepend './' to create absolute path
# shellcheck source=./backup.details
. "./${configDetails}"
;;
esac
writeLog 'info' "Configuration file: ${yellow}${configDetails}${info} imported"
### verify borg variables
# verify borg base directory
writeLog 'task' 'Verify details:borgBaseDir'
if [ -z "${borgBaseDir}" ]; then
badDetails empty 'borgBaseDir'
elif [ ! -d "${borgBaseDir}" ]; then
badDetails dne 'borgBaseDir'
fi
export BORG_BASE_DIR="${borgBaseDir%/}"
writeLog 'done'
# check path to SSH keyfile
writeLog 'task' 'Verify details:borgSSHKey'
if [ -z "${borgSSHKey}" ]; then
badDetails empty 'borgSSHKey'
elif [ ! -f "${borgSSHKey}" ]; then
badDetails dne 'borgSSHKey'
fi
export BORG_RSH="ssh -i ${borgSSHKey}"
writeLog 'done'
# check borg repo connect string
writeLog 'task' 'Verify details:borgConnectRepo'
if [ -z "${borgConnectRepo}" ]; then
badDetails empty 'borgConnectRepo'
fi
export BORG_REPO="${borgConnectRepo}"
writeLog 'done'
# check borg repo password
writeLog 'task' 'Verify details:borgRepoPassphrase'
if [ -z "${borgRepoPassphrase}" ]; then
# an empty repo passphrase is considered a mistake so throw an error
# if the user meant to enter an empty passphrase they should use 'NONE'
badDetails empty 'borgRepoPassphrase'
elif [ "${borgRepoPassphrase}" = 'NONE' ]; then
# password intentionally blank, use but issue warning
export BORG_PASSPHRASE=''
writeLog 'done' 'warn'
writeLog 'warn' 'Using a borg repo with a blank password is an insecure configuration!'
warnCount=$((warnCount + 1))
else
export BORG_PASSPHRASE="${borgRepoPassphrase}"
writeLog 'done'
fi
# check borg repo keyfile location
writeLog 'task' 'Verify details:borgKeyfileLocation'
if [ -z "${borgKeyfileLocation}" ]; then
# will use default location
writeLog 'done'
else
# verify keyfile location exists
if [ ! -f "${borgKeyfileLocation}" ]; then
badDetails dne 'bogKeyfileLocation'
fi
export BORG_KEY_FILE="${borgKeyfileLocation}"
writeLog 'done'
fi
# export borg remote path, if specified
if [ -n "${borgRemote}" ]; then export BORG_REMOTE_PATH="${borgRemote}"; fi
### create borg temp dir
## python requires a writable temporary directory when unpacking borg and
## executing commands. This defaults to /tmp but many systems mount /tmp with
## the 'noexec' option for security. Thus, we will use/create a 'tmp' folder
## within the BORG_BASE_DIR and instruct python to use that instead of /tmp
# check if BORG_BASE_DIR/tmp exists, if not, create it
if [ ! -d "${borgBaseDir}/tmp" ]; then
if ! mkdir "${borgBaseDir}/tmp" 2>/dev/null; then
writeLog 'error' '31' "Unable to create borg temp directory (${borgBaseDir}/tmp)"
exitError 31
fi
fi
export TMPDIR="${borgBaseDir}/tmp"
### change to mailcow directory so docker commands run properly
cd "$(dirname ${mcConfig})" || writeLog 'error' '100' "Could not change to mailcow directory." && exitError 100
#TODO: stop containers
#TODO: pull backup via borg
#TODO: copy backups to correct docker volumes
#TODO: copy additional files to correct locations
#TODO: restart docker containers
#TODO: optionally reindex dovecot (parameter)
#TODO: delete downloaded backup (parameter)
### exit gracefully
writeLog 'success' "All processes completed"
@ -450,13 +323,10 @@ exit 0
### error codes:
# 1: parameter error
# 2: not run as root
# 3: borg or docker not installed
# 10: null configuration variable in details file
# 11: invalid configuration variable in details file
# 3: docker not installed
# 99: TERM signal trapped
# 100: could not change to mailcow-dockerized directory
# 101: could not stop container(s)
# 102: could not start container(s)
# 110: borg exited with a critical error
#EOF