roles/base/backup/files/default/backup.sh

   1 #!/bin/bash
   2 ################################################
   3 ### Managed by someone's ansible provisioner ###
   4 ################################################
   5 # Part of: https://git.somenet.org/root/pub/somesible.git
   6 # 2017-2024 by someone <someone@somenet.org>
   7 #
   8
   9 umask 0077
  10 cd /tmp
  11 export ERRCODE=0
  12
  13 export BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK="yes"
  14 export BORG_RELOCATED_REPO_ACCESS_IS_OK="yes"
  15
  16 function backup {
  17     BKPREPO=${1} # $1 = backup repo. (should be: "/bkp/storage-local/$host/$path" or for ssh: "user@server:$path")
  18     BKPHOST=${2} # $2 = src-host.
  19     BKPPATH=${3} # $3 = abs-path on src-host.
  20     BKPKEEP=${4} # $4 = pruning-settings.
  21     BKPPATH_ESCAPED=$(echo -n "$BKPPATH"|sed -e 's#/#-#g') # contains first "/"
  22
  23     borg info "$BKPREPO" >/dev/null 2>&1 || borg init --umask 0077 -e none --make-parent-dirs "$BKPREPO"
  24
  25     echo "# Merged on: $(date -Isec)" > "/bkp/local/exclude.conf.d/.merged.$BKPHOST-$BKPPATH_ESCAPED"
  26     for file in /bkp/local/exclude.conf.d/$BKPHOST-$BKPPATH_ESCAPED*; do
  27         echo -e "\n\n# $file" >> "/bkp/local/exclude.conf.d/.merged.$BKPHOST-$BKPPATH_ESCAPED"
  28         cat "$file" >> "/bkp/local/exclude.conf.d/.merged.$BKPHOST-$BKPPATH_ESCAPED"
  29     done
  30
  31     borg create --umask 0077 --info --list --stats --noctime --nobirthtime --exclude-caches --exclude-from "/bkp/local/exclude.conf.d/.merged.$BKPHOST-$BKPPATH_ESCAPED" "$BKPREPO::$BKPHOST-$BKPPATH_ESCAPED--{now}" "$BKPPATH"
  32         exit_status=$?;
  33         if [ $exit_status -ne 0 ]; then
  34             export ERRCODE="$exit_status";
  35             echo "** backup.sh (backup:create): non-zero exitcode: $exit_status"
  36         fi
  37
  38     backup_prune "$BKPREPO" "$BKPKEEP"
  39 }
  40
  41 function backup_cmd {
  42     BKPREPO=${1} # $1 = backup repo. (should be: "/bkp/storage-local/$host/$path" or for ssh: "user@server:$path")
  43     BKPNAME=${2} # $2 = backup name.
  44     BKPCMD=${3} # $3 = command to run.
  45     BKPKEEP=${4} # $4 = pruning-settings.
  46
  47     borg info "$BKPREPO" >/dev/null 2>&1 || borg init --umask 0077 -e none --make-parent-dirs "$BKPREPO"
  48
  49     borg create --umask 0077 --info --stats --noctime --nobirthtime --compression zstd --files-cache disabled --content-from-command -- "$BKPREPO::$BKPNAME--{now}" $BKPCMD
  50         exit_status=$?;
  51         if [ $exit_status -ne 0 ]; then
  52             export ERRCODE="$exit_status";
  53             echo "** backup.sh (backup_cmd:create): non-zero exitcode: $exit_status"
  54         fi
  55
  56     backup_prune "$BKPREPO" "$BKPKEEP"
  57 }
  58
  59 function backup_prune {
  60     BKPREPO=${1} # $1 = backup repo. (should be: "/bkp/storage-local/$host/$path" or for ssh: "user@server:$path")
  61     BKPKEEP=${2} # $2 = pruning-settings.
  62
  63     if [[ -z "$BKPKEEP" ]]; then
  64         echo "** backup.sh(backup_prune): No prune settings, skipping"
  65     else
  66         borg prune --umask 0077 --list --stats --save-space --keep-last 1 $BKPKEEP "$BKPREPO"
  67             exit_status=$?;
  68             if [ $exit_status -ne 0 ]; then
  69                 export ERRCODE="$exit_status";
  70                 echo "** backup.sh (backup_prune:prune): non-zero exitcode: $exit_status"
  71             fi
  72        borg compact -v --cleanup-commits "$BKPREPO"
  73             exit_status=$?;
  74             if [ $exit_status -ne 0 ]; then
  75                 export ERRCODE="$exit_status";
  76                 echo "** backup.sh (backup_prune:compact): non-zero exitcode: $exit_status"
  77             fi
  78     fi
  79 }
  80
  81 # run managed
  82 echo "** backup.sh: running /bkp/local/backup.conf.managed"
  83 source /bkp/local/backup.conf.managed
  84
  85 # run local additions
  86 if [ -e "/bkp/local/backup.conf.local" ]; then
  87     echo "** backup.sh: running /bkp/local/backup.conf.local"
  88     source /bkp/local/backup.conf.local
  89 fi
  90
  91 echo "** backup.sh: DONE"
  92
  93 unset BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK
  94 unset BORG_RELOCATED_REPO_ACCESS_IS_OK
  95
  96 exit $ERRCODE