If you change the index attribute of monitor stanza in inputs.conf,
Will log re-capture be done?
For example, if you change it as below in inputs.conf
[monitor: ///work/file.txt]
index = test 0612
sourcetype = sample
[monitor: ///work/file.txt]
index = test 0613
sourcetype = sample
No, because Splunk instances (including forwarders) use their internal _fishbucket index for keeping track of positions in files they're indexing. You'd have to clean that out one way or another to make Splunk reindex data.
Nope, in cases like these, I sometimes drop the forwarder and re-install it. Starting fresh ; -)