Ok good.
I think start_position => beginning is not always for preproduction. Read a file from the begin is also good 
Everything is working now, my conf, my template (so it analyze fields when i said to not analyze ) that's not important for the moment.
But do you know this error in Logstash (logs are upload correctly even so)?
[2017-04-14T11:10:38,203][WARN ][o.e.d.i.m.TypeParsers ] Expected a boolean for property [index] but got [not_analyzed]
[2017-04-14T11:10:38,204][WARN ][o.e.d.i.m.TypeParsers ] Expected a boolean for property [index] but got [not_analyzed]
[2017-04-14T11:11:11,659][WARN ][o.e.d.i.q.QueryParseContext] query malformed, empty clause found at [1:143]
[2017-04-14T11:13:16,229][WARN ][o.e.d.i.q.QueryParseContext] query malformed, empty clause found at [1:143]
[2017-04-14T11:17:59,065][WARN ][o.e.d.i.m.TypeParsers ] Expected a boolean for property [index] but got [not_analyzed]
[2017-04-14T11:18:27,091][WARN ][o.e.d.i.m.TypeParsers ] Expected a boolean for property [index] but got [not_analyzed]
[2017-04-14T11:21:18,981][WARN ][o.e.d.i.m.TypeParsers ] Expected a boolean for property [index] but got [not_analyzed]
It's possible to change the unity (octet => Gigaoctet) when logs are upload ? ^^