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beats: take over the read positions of the old log inputs - #561
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The role switched the inputs from beats_filebeat_log_inputs and the MySQL slow log from log to filestream. Filestream does not use the read positions of the log inputs, so every host upgraded from an older version reads all configured files again from the beginning and ships their content a second time. beats_filebeat_take_over sets take_over on these inputs, so Filebeat continues where the log inputs stopped. Take over mode needs the same paths as the old inputs and the log inputs removed, which the role already does since it renders both from the same variables. The option defaults to false because take over mode is beta in Filebeat 8.19 and only matters once, during the upgrade. take_over: true is accepted in 8.19 and 9.0 and still supported in 9.1, which added take_over.enabled. https://www.elastic.co/docs/reference/beats/filebeat/migrate-to-filestream https://www.elastic.co/docs/reference/beats/filebeat/filebeat-input-filestream
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The role switched the inputs from beats_filebeat_log_inputs and the MySQL slow log from log to filestream. Filestream does not use the read positions of the log inputs, so every host upgraded from an older version reads all configured files again from the beginning and ships their content a second time.
beats_filebeat_take_over sets take_over on these inputs, so Filebeat continues where the log inputs stopped. Take over mode needs the same paths as the old inputs and the log inputs removed, which the role already does since it renders both from the same variables. The option defaults to false because take over mode is beta in Filebeat 8.19 and only matters once, during the upgrade. take_over: true is accepted in 8.19 and 9.0 and still supported in 9.1, which added take_over.enabled.
https://www.elastic.co/docs/reference/beats/filebeat/migrate-to-filestream https://www.elastic.co/docs/reference/beats/filebeat/filebeat-input-filestream