Facing error while rollover based on alias and template in 5.6.0

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3

Your question is hard to pin down, because you are saying so many things with so many examples.

Rollover indices must end in a dash and a number, typically (you have to go through hoops with the rollover API calls to get around this). Curator was checking for the index associated with your rollover alias (which is twitter in the pasted block), which does not end with a dash and a number.

I'm not quite sure what you're doing wrong. Here's a working example:

PUT twitter-2019.06.09-1
{
  "aliases": {
    "twitter-alias": {
      "is_write_index": true
    }
  }
}

PUT twitter-alias/_doc/1
{
  "doc1": "dummy_doc1"
}
PUT twitter-alias/_doc/2
{
  "doc2": "dummy_doc2"
}

RESULT:

{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "old_index" : "twitter-2019.06.09-1",
  "new_index" : "twitter-2019.06.09-000002",
  "rolled_over" : true,
  "dry_run" : false,
  "conditions" : {
    "[max_docs: 1]" : true
  }
}

Additionally:

GET twitter-alias

Yields:

{
  "twitter-2019.06.09-000002" : {
    "aliases" : {
      "twitter-alias" : {
        "is_write_index" : true
      }
    },
    "mappings" : {...},
    "settings" : {
      "index" : {
        "creation_date" : "1560216263049",
        "number_of_shards" : "1",
        "number_of_replicas" : "1",
        "uuid" : "kMd6jt_dSWKSCW4ertSuLg",
        "version" : {
          "created" : "7010099"
        },
        "provided_name" : "twitter-2019.06.09-000002"
      }
    }
  },
  "twitter-2019.06.09-1" : {
    "aliases" : {
      "twitter-alias" : {
        "is_write_index" : false
      }
    },
    "mappings" : {...},
    "settings" : {
      "index" : {
        "creation_date" : "1560216199250",
        "number_of_shards" : "1",
        "number_of_replicas" : "1",
        "uuid" : "zjIKove5SXqAXSEfseYpQg",
        "version" : {
          "created" : "7010099"
        },
        "provided_name" : "twitter-2019.06.09-1"
      }
    }
  }
}