ElasticSearch Template CRD

Example:

apiVersion: xo.90poe.io/v1alpha1
kind: ElasticSearchTemplate
metadata:
  name: example-elasticsearchtemplate
  namespace: zm
spec:
  name: dev_test_test_tmpl
  drop_on_delete: true
  index_patterns:
  - "zm_spm_draft_position_weather_*"
  aliases:
    some_test: {}
    "{index}-alias-for-{gender}":
      filter: |
        {
          "term" : {
            "product" : "Elasticsearch"
          }
        }
      aliases:
      - "zm_spm_draft_position_weather"
  settings:
    number_of_shards: 55
    shards:
      check_on_startup: "false"
    codec: "default"
    number_of_replicas: 3
  mappings: |
    {
      "dynamic": false,
      "_source": {
        "enabled": true
      },
      "properties": {
        "isRead": {
          "type": "boolean",
          "index": true
        },
        "createdAt": {
          "type": "date",
          "index": true
        }
      }
    }

Spec

Setting are made to be as close as possible to ES API.

You would need to amend spec section.

Settings	Type	Required	Notes
name	string	Yes	Name of ES template
drop_on_delete	bool	No	Should we drop index if K8S object is deleted, default false
index_patterns	[]string	Yes	Array of wildcard expressions used to match the names of indices during creation.
aliases	map[string]ESAlias	No	Map, where keys are alias names, and values are ESAlias, see ESAlias
settings	ESIndexSettings	No	See ESIndexSettings
mappings	string	Yes	Mappings of ES Index, must be valid JSON
version	int64	No	Version number used to manage index templates externally. This number is not automatically generated by Elasticsearch.

ESAlias

Settings	Type	Required	Notes
indices	[]string	No	(Array) Array of index names used to perform the action. If the index parameter is not specified, this parameter is required.
aliases	[]string	No	(String) Comma-separated list or wildcard expression of index alias names to add, remove, or delete. If the alias parameter is not specified, this parameter is required for the add or remove action.
filter	string	No	(Optional, query object in string form) Filter query used to limit the index alias. If specified, the index alias only applies to documents returned by the filter. Filter query used to limit the index alias. If specified, the index alias only applies to documents returned by the filter. See Filtered aliases for an example.
is_write_index	bool	No	(Optional, boolean) If true, assigns the index as an alias’s write index. Defaults to false.
routing	string	No	(Optional, string) Custom routing value used to route operations to a specific shard.
index_routing	string	No	(Optional, string) Custom routing value used for the alias’s indexing operations.
search_routing	string	No	(Optional, string) Custom routing value used for the alias’s search operations.