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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.elasticsearch-curator;
curatorConfig = pkgs.writeTextFile {
name = "config.yaml";
text = ''
---
# Remember, leave a key empty if there is no value. None will be a string,
# not a Python "NoneType"
client:
hosts: ${builtins.toJSON cfg.hosts}
port: ${toString cfg.port}
url_prefix:
use_ssl: False
certificate:
client_cert:
client_key:
ssl_no_validate: False
http_auth:
timeout: 30
master_only: False
logging:
loglevel: INFO
logfile:
logformat: default
blacklist: ['elasticsearch', 'urllib3']
'';
};
curatorAction = pkgs.writeTextFile {
name = "action.yaml";
text = cfg.actionYAML;
};
in {
options.services.elasticsearch-curator = {
enable = mkEnableOption "elasticsearch curator";
interval = mkOption {
description = "The frequency to run curator, a systemd.time such as 'hourly'";
default = "hourly";
type = types.str;
};
hosts = mkOption {
description = "a list of elasticsearch hosts to connect to";
type = types.listOf types.str;
default = ["localhost"];
};
port = mkOption {
description = "the port that elasticsearch is listening on";
type = types.int;
default = 9200;
};
actionYAML = mkOption {
description = "curator action.yaml file contents, alternatively use curator-cli which takes a simple action command";
type = types.lines;
example = ''
---
actions:
1:
action: delete_indices
description: >-
Delete indices older than 45 days (based on index name), for logstash-
prefixed indices. Ignore the error if the filter does not result in an
actionable list of indices (ignore_empty_list) and exit cleanly.
options:
ignore_empty_list: True
disable_action: False
filters:
- filtertype: pattern
kind: prefix
value: logstash-
- filtertype: age
source: name
direction: older
timestring: '%Y.%m.%d'
unit: days
unit_count: 45
'';
};
};
config = mkIf cfg.enable {
systemd.services.elasticsearch-curator = {
startAt = cfg.interval;
serviceConfig = {
ExecStart =
"${pkgs.elasticsearch-curator}/bin/curator" +
" --config ${curatorConfig} ${curatorAction}";
};
};
};
}
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