How to create Elasticsearch Index template index templates

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I.

Index template, define template, automatically match when a new index is created, and apply the defined template

New Index template (index templates)

Let's create a new index template template_1 to set its main shard to 1. Type has type1 and _ source disabled

PUT / _ template/template_1 {"template": "tmuri *", "settings": {"number_of_shards": 1} "mappings": {"type1": {"_ source": {"enabled": false} POST / t-1GET / t-1/_mapping {"tmur1": {"mappings": {"type1": {"_ source": {"enabled": false} "properties": {}

Example: when we want to create an index again, we also create an alias for it

PUT / _ template/template_2 {"template": "smurf *", "settings": {"number_of_shards": 1}, "aliases": {"alias1": {}, "{index}-alias": {}} POST / s-1GET / smur1

When multiple index templates are created, and an index is created and matched by multiple index templates, then settings and mappings will be merged into a configuration and applied to the index, the order of which is controlled by the order property of the index template. Large order will overwrite the previous configuration

PUT / _ template/template_1 {"template": "*", "order": 0, "settings": {"number_of_shards": 1}, "mappings": {"type1": {"_ source": {"enabled": false} PUT / _ template/template_2 {"template": "tt-*" "order": 1, "settings": {"number_of_shards": 1}, "mappings": {"type1": {"_ source": {"enabled": true} POST / tt-1 = > will be matched by both templates mentioned above For the _ source attribute order=1, order=0 or enabled:true will be overridden.

File configuration: we can add json configuration files under the config/templates directory

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