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http://172.17.2.91:9200/_nodes/os?pretty
index statistics (/<index>/_stats?pretty)
if you need statistics about your index you can use this command like
acd30.skypro.ch:3191/elasticsearch/audit*/_stats?pretty
TTL
To test TTL, you should know that you cannot view the TTL field value. You need to explicitly ask for it with body request parameter fields. Look at this articel
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