added nixos modules to perform simple backup scheduling for directories, postgresql and mysql database dumps

svn path=/nixos/trunk/; revision=17690
This commit is contained in:
Rob Vermaas 2009-10-07 11:55:36 +00:00
parent 9b5611e35e
commit 704e56667a
4 changed files with 254 additions and 0 deletions

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@ -36,6 +36,9 @@
./security/sudo.nix
./services/audio/alsa.nix
./services/audio/pulseaudio.nix
./services/backup/mysql-backup.nix
./services/backup/postgresql-backup.nix
./services/backup/sitecopy-backup.nix
./services/databases/mysql.nix
./services/databases/postgresql.nix
./services/hardware/acpid.nix

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@ -0,0 +1,71 @@
{pkgs, config, ...}:
let
inherit (pkgs.lib) mkOption mkIf singleton concatStrings;
inherit (pkgs) mysql gzip;
location = config.services.mysqlBackup.location ;
mysqlBackupCron = db : ''
${config.services.mysqlBackup.period} mysql ${mysql}/bin/mysqldump ${db} | ${gzip}/bin/gzip -c > ${location}/${db}.gz
'';
in
{
###### interface
options = {
services.mysqlBackup = {
enable = mkOption {
default = false;
description = ''
Whether to enable MySQL backups.
'';
};
period = mkOption {
default = "15 01 * * *";
description = ''
This option defines (in the format used by cron) when the
databases should be dumped.
The default is to update at 01:15 (at night) every day.
'';
};
databases = mkOption {
default = [];
description = ''
List of database names to dump.
'';
};
location = mkOption {
default = "/var/backup/mysql";
description = ''
Location to put the gzipped PostgreSQL database dumps.
'';
};
};
};
###### implementation
config = mkIf config.services.mysqlBackup.enable {
services.cron = {
systemCronJobs =
pkgs.lib.optional
config.services.mysqlBackup.enable
(concatStrings (map mysqlBackupCron config.services.mysqlBackup.databases));
};
system.activationScripts.mysqlBackup = pkgs.stringsWithDeps.noDepEntry ''
mkdir -m 0700 -p ${config.services.mysqlBackup.location}
chown mysql ${config.services.mysqlBackup.location}
'';
};
}

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{pkgs, config, ...}:
let
inherit (pkgs.lib) mkOption mkIf singleton concatStrings;
inherit (pkgs) postgresql gzip;
location = config.services.postgresqlBackup.location ;
postgresqlBackupCron = db : ''
${config.services.postgresqlBackup.period} root ${postgresql}/bin/pg_dump ${db} | ${gzip}/bin/gzip -c > ${location}/${db}.gz
'';
in
{
###### interface
options = {
services.postgresqlBackup = {
enable = mkOption {
default = false;
description = ''
Whether to enable PostgreSQL dumps.
'';
};
period = mkOption {
default = "15 01 * * *";
description = ''
This option defines (in the format used by cron) when the
databases should be dumped.
The default is to update at 01:15 (at night) every day.
'';
};
databases = mkOption {
default = [];
description = ''
List of database names to dump.
'';
};
location = mkOption {
default = "/var/backup/postgresql";
description = ''
Location to put the gzipped PostgreSQL database dumps.
'';
};
};
};
###### implementation
config = mkIf config.services.postgresqlBackup.enable {
services.cron = {
systemCronJobs =
pkgs.lib.optional
config.services.postgresqlBackup.enable
(concatStrings (map postgresqlBackupCron config.services.postgresqlBackup.databases));
};
system.activationScripts.postgresqlBackup = pkgs.stringsWithDeps.noDepEntry ''
mkdir -m 0700 -p ${config.services.postgresqlBackup.location}
chown root ${config.services.postgresqlBackup.location}
'';
};
}

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{pkgs, config, ...}:
let
inherit (pkgs.lib) mkOption mkIf singleton concatStrings;
inherit (pkgs) sitecopy;
stateDir = "/var/spool/sitecopy";
sitecopyCron = backup : ''
${if backup ? period then backup.period else config.services.sitecopy.period} root ${sitecopy}/bin/sitecopy --storepath=${stateDir} --rcfile=${stateDir}/${backup.name}.conf --update ${backup.name}
'';
in
{
###### interface
options = {
services.sitecopy = {
enable = mkOption {
default = false;
description = ''
Whether to enable sitecopy backups of specified directories.
'';
};
period = mkOption {
default = "15 04 * * *";
description = ''
This option defines (in the format used by cron) when the
sitecopy backup are being run.
The default is to update at 04:15 (at night) every day.
'';
};
backups = mkOption {
default = [];
description = ''
List of attributesets describing the backups.
E.g. { name = "test";
local = "/tmp/backup";
remote = "/staff-groups/ewi/st/strategoxt/backup/test";
server = "webdata.tudelft.nl";
protocol = "webdav";
https = true ;
};
Username/password are extracted from ${stateDir}/sitecopy.secrets at activation
time. The secrets file lines should have the following structure:
<server> <username> <password>
'';
};
};
};
###### implementation
config = mkIf config.services.sitecopy.enable {
environment.systemPackages = [ sitecopy ];
services.cron = {
systemCronJobs = pkgs.lib.optional
config.services.sitecopy.enable
(concatStrings (map sitecopyCron config.services.sitecopy.backups));
};
system.activationScripts.postgresqlBackup =
pkgs.stringsWithDeps.noDepEntry ''
mkdir -m 0700 -p ${stateDir}
chown root ${stateDir}
touch ${stateDir}/sitecopy.secrets
chown root ${stateDir}/sitecopy.secrets
${pkgs.lib.concatStrings (map ( b: ''
unset secrets
unset secret
secrets=`grep '^${b.server}' ${stateDir}/sitecopy.secrets | head -1`
secret=($secrets)
cat > ${stateDir}/${b.name}.conf << EOF
site ${b.name}
server ${b.server}
protocol ${b.protocol}
username ''${secret[1]}
password ''${secret[2]}
local ${b.local}
remote ${b.remote}
${if b.https then "http secure" else ""}
EOF
chmod 0600 ${stateDir}/${b.name}.conf
if ! test -e ${stateDir}/${b.name} ; then
echo " * Initializing sitecopy '${b.name}'"
${sitecopy}/bin/sitecopy --storepath=${stateDir} --rcfile=${stateDir}/${b.name}.conf --initialize ${b.name}
else
echo " * Sitecopy '${b.name}' already initialized"
fi
'' ) config.services.sitecopy.backups
)}
'';
};
}