Illegal_argument_exception: index.lifecycle.rollover_alias does not point to index

Elastic Stack Elasticsearch
2

Also a previous question: Does ILM work in Logstash with custom index names?

And the issue I raised as the ilm_pattern => "000001" didn't work either:

output {
    elasticsearch{
    	hosts => "${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}"
    	index => "%{[@metadata][kafka][topic]}-%{+YYYY.MM.dd}"
#    	ilm_rollover_alias => "%{[@metadata][kafka][topic]}"
#    	ilm_policy => "%{[@metadata][kafka][topic]}"
    	ilm_pattern => "000001"
    }
}

I opened an issue here: https://github.com/elastic/logstash/issues/12214

I saw that @warkolm was addressing a similar question here: How to correct custom logstash index name for use by ILM

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