Patterns allow you to define dynamic index names using * as a wildcard. Example: logstash-*

Patterns allow you to define dynamic index names. Static text in an index name is denoted using brackets. Example: [logstash-]YYYY.MM.DD. Please note that weeks are setup to use ISO weeks which start on Monday. — Date Format Documentation

Note: I noticed you're using weekly indices. Kibana requires ISO weeks be used in your index creation. See Wikipedia: ISO Week Date
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Attempted to match the following indices and aliases:
  • {{sample}}
Pattern matches {{index.existing.matchPercent}} of existing indices and aliases
  • {{match}}
Indices and aliases that were found, but did not match the pattern:
  • {{match}}
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