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|
{ lib, pkgs, config, ... }:
let
cfg = config.myEnv.backup;
varDir = "/var/lib/duply";
duplyProfile = profile: prefix: ''
GPG_PW="${cfg.password}"
TARGET="${cfg.remote}${prefix}"
export AWS_ACCESS_KEY_ID="${cfg.accessKeyId}"
export AWS_SECRET_ACCESS_KEY="${cfg.secretAccessKey}"
SOURCE="${profile.rootDir}"
FILENAME=".duplicity-ignore"
DUPL_PARAMS="$DUPL_PARAMS --exclude-if-present '$FILENAME'"
VERBOSITY=4
ARCH_DIR="${varDir}/caches"
# Do a full backup after 1 month
MAX_FULLBKP_AGE=1M
DUPL_PARAMS="$DUPL_PARAMS --full-if-older-than $MAX_FULLBKP_AGE "
# Backups older than 2months are deleted
MAX_AGE=2M
# Keep 2 full backups
MAX_FULL_BACKUPS=2
MAX_FULLS_WITH_INCRS=2
'';
action = "bkp_purge_purgeFull_purgeIncr";
in
{
options = {
services.duplyBackup.enable = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Whether to enable remote backups.
'';
};
services.duplyBackup.profiles = lib.mkOption {
type = lib.types.attrsOf (lib.types.submodule {
options = {
rootDir = lib.mkOption {
type = lib.types.path;
description = ''
Path to backup
'';
};
excludeFile = lib.mkOption {
type = lib.types.lines;
default = "";
description = ''
Content to put in exclude file
'';
};
};
});
};
};
config = lib.mkIf config.services.duplyBackup.enable {
system.activationScripts.backup = ''
install -m 0700 -o root -g root -d ${varDir} ${varDir}/caches
'';
secrets.keys = lib.flatten (lib.mapAttrsToList (k: v: [
{
permissions = "0400";
dest = "backup/${k}/conf";
text = duplyProfile v "${k}/";
}
{
permissions = "0400";
dest = "backup/${k}/exclude";
text = v.excludeFile;
}
]) config.services.duplyBackup.profiles);
services.cron = {
enable = true;
systemCronJobs = let
backups = pkgs.writeScript "backups" ''
#!${pkgs.stdenv.shell}
${builtins.concatStringsSep "\n" (lib.mapAttrsToList (k: v:
''
touch ${varDir}/${k}.log
${pkgs.duply}/bin/duply ${config.secrets.location}/backup/${k}/ ${action} --force >> ${varDir}/${k}.log
[[ $? = 0 ]] || echo -e "Error when doing backup for ${k}, see above\n---------------------------------------" >&2
''
) config.services.duplyBackup.profiles)}
'';
in
[
"0 2 * * * root ${backups}"
];
};
security.pki.certificateFiles = [
(pkgs.fetchurl {
url = "http://downloads.e.eriomem.net/eriomemca.pem";
sha256 = "1ixx4c6j3m26j8dp9a3dkvxc80v1nr5aqgmawwgs06bskasqkvvh";
})
];
};
}
|
