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|
{ pkgs, config, lib, ... }:
let
cfg = config.myServices.databasesReplication.openldap;
eldiron_schemas = pkgs.callPackage ./openldap/eldiron_schemas.nix {};
ldapConfig = hcfg: name: pkgs.writeText "slapd.conf" ''
${eldiron_schemas}
pidfile /run/slapd_${name}/slapd.pid
argsfile /run/slapd_${name}/slapd.args
moduleload back_hdb
backend hdb
database hdb
suffix "${hcfg.base}"
rootdn "cn=root,${hcfg.base}"
directory ${cfg.base}/${name}/openldap
index objectClass eq
index uid pres,eq
index entryUUID eq
include ${config.secrets.location}/openldap_replication/${name}/replication_config
'';
in
{
options.myServices.databasesReplication.openldap = {
enable = lib.mkEnableOption "Enable openldap replication";
base = lib.mkOption {
type = lib.types.path;
description = ''
Base path to put the replications
'';
};
hosts = lib.mkOption {
default = {};
description = ''
Hosts to backup
'';
type = lib.types.attrsOf (lib.types.submodule {
options = {
package = lib.mkOption {
type = lib.types.package;
default = pkgs.openldap;
description = ''
Openldap package for this host
'';
};
url = lib.mkOption {
type = lib.types.str;
description = ''
Host to connect to
'';
};
base = lib.mkOption {
type = lib.types.str;
description = ''
Base DN to replicate
'';
};
dn = lib.mkOption {
type = lib.types.str;
description = ''
DN to use
'';
};
password = lib.mkOption {
type = lib.types.str;
description = ''
Password to use
'';
};
};
});
};
};
config = lib.mkIf cfg.enable {
users.users.openldap = {
description = "Openldap database user";
group = "openldap";
uid = config.ids.uids.openldap;
extraGroups = [ "keys" ];
};
users.groups.openldap.gid = config.ids.gids.openldap;
secrets.keys = lib.flatten (lib.mapAttrsToList (name: hcfg: [
{
dest = "openldap_replication/${name}/replication_config";
user = "openldap";
group = "openldap";
permissions = "0400";
text = ''
syncrepl rid=000
provider=${hcfg.url}
type=refreshAndPersist
searchbase="${hcfg.base}"
retry="5 10 300 +"
attrs="*,+"
schemachecking=off
bindmethod=simple
binddn="${hcfg.dn}"
credentials="${hcfg.password}"
'';
}
{
dest = "openldap_replication/${name}/replication_password";
user = "openldap";
group = "openldap";
permissions = "0400";
text = hcfg.password;
}
]) cfg.hosts);
services.cron = {
enable = true;
systemCronJobs = lib.flatten (lib.mapAttrsToList (name: hcfg:
let
dataDir = "${cfg.base}/${name}/openldap";
backupDir = "${cfg.base}/${name}/openldap_backup";
backup_script = pkgs.writeScript "backup_openldap_${name}" ''
#!${pkgs.stdenv.shell}
${hcfg.package}/bin/slapcat -b "${hcfg.base}" -f ${ldapConfig hcfg name} -l ${backupDir}/$(${pkgs.coreutils}/bin/date -Iseconds).ldif
'';
u = pkgs.callPackage ./utils.nix {};
cleanup_script = pkgs.writeScript "cleanup_openldap_${name}" (u.exponentialDumps "ldif" backupDir);
in [
"0 22,4,10,16 * * * root ${backup_script}"
"0 3 * * * root ${cleanup_script}"
]) cfg.hosts);
};
system.activationScripts = lib.attrsets.mapAttrs' (name: hcfg:
lib.attrsets.nameValuePair "openldap_replication_${name}" {
deps = [ "users" "groups" ];
text = ''
install -m 0700 -o openldap -g openldap -d ${cfg.base}/${name}/openldap
install -m 0700 -o openldap -g openldap -d ${cfg.base}/${name}/openldap_backup
'';
}) cfg.hosts;
systemd.services = lib.attrsets.mapAttrs' (name: hcfg:
let
dataDir = "${cfg.base}/${name}/openldap";
in
lib.attrsets.nameValuePair "openldap_backup_${name}" {
description = "Openldap replication for ${name}";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
unitConfig.RequiresMountsFor = dataDir;
preStart = ''
mkdir -p /run/slapd_${name}
chown -R "openldap:openldap" /run/slapd_${name}
'';
serviceConfig = {
ExecStart = "${hcfg.package}/libexec/slapd -d 0 -u openldap -g openldap -f ${ldapConfig hcfg name}";
};
}) cfg.hosts;
};
}
|
