Unable to connnect to SQLServer dataserver parameter not Working

Non sono indicati file sorgente né test. Inizia dalla configurazione del SQL output plugin e dall’errore di connessione di TinyTDS, quindi segui come i relativi parametri host e dataserver vengono passati al SQLServer adapter; il lavoro è concluso quando viene stabilita una connessione documentata e funzionante senza gli errori di configurazione segnalati.

So I've been working with this plugin for some days and finally achieved sending logs to a local sqlserver container.
Now that Im trying in prepo I'm not able to connecto to the database.
And so I startted with

<match docker.caesar**>
    @type copy
    <store>
        @type stdout
    </store>
    <store>
        @type sql
        log_level info
        host 172........\sql2019pre
        port 1433
        chema_search_path piscinalogs
        database db_Poseidon
        adapter sqlserver
        username "#{ENV['USER']}"
        password "#{ENV['PASSWORD']}"
        state_file /var/run/fluentd/sql_state
        <table>
            table logs
column_mapping 'time:timestamp,level:level,mensaje:message,Container_Name:containerName,App_Name:appName,Env:enviroment'
            # This is the default table because it has no "pattern" argument in <table>
            # The logic is such that if all non-default <table> blocks
            # do not match, the default one is chosen.
            # The default table is required.
            flush_interval 10s
        </table>
    </store>
</match>

This configuration did not work since it returns
fluentd | 2024-08-29 09:42:24 +0000 [warn]: #0 failed to flush the buffer. retry_times=0 next_retry_time=2024-08-29 09:42:26 +0000 chunk="620cf46e28eacdbcecf964d3ed2978be" error_class=TinyTds::Error error="Server name not found in configuration files"
Then I investigated how activerecords connects to database and encounter that they used the param: dataserver
When removing the host param in order to introduce the dataserver param :

<match docker.caesar**>
    @type copy
    <store>
        @type stdout
    </store>
    <store>
        @type sql
        log_level info
        dataserver 172.......\sql2019pre
        port 1433
        chema_search_path piscinalogs
        database db_Poseidon
        adapter sqlserver
        username "#{ENV['USER']}"
        password "#{ENV['PASSWORD']}"
        state_file /var/run/fluentd/sql_state
        <table>
            table logs
column_mapping 'time:timestamp,level:level,mensaje:message,Container_Name:containerName,App_Name:appName,Env:enviroment'
            # This is the default table because it has no "pattern" argument in <table>
            # The logic is such that if all non-default <table> blocks
            # do not match, the default one is chosen.
            # The default table is required.
            flush_interval 10s
        </table>
    </store>
</match>

It returns:
fluentd | 2024-08-29 09:45:42 +0000 [error]: config error file="/fluentd/etc/fluent.conf" error_class=Fluent::ConfigError error="'host' parameter is required"
And so I decided to let both parameters

<match docker.caesar**>
    @type copy
    <store>
        @type stdout
    </store>
    <store>
        @type sql
        host  172......
        dataserver 172.......\sql2019pre
        port 1433
        chema_search_path piscinalogs
        database db_Poseidon
        adapter sqlserver
        username "#{ENV['USER']}"
        password "#{ENV['PASSWORD']}"
        state_file /var/run/fluentd/sql_state
        <table>
            table logs
column_mapping 'time:timestamp,level:level,mensaje:message,Container_Name:containerName,App_Name:appName,Env:enviroment'
            # This is the default table because it has no "pattern" argument in <table>
            # The logic is such that if all non-default <table> blocks
            # do not match, the default one is chosen.
            # The default table is required.
            flush_interval 10s
        </table>
    </store>
</match>

It returns: fluentd | 2024-08-29 09:48:34 +0000 [warn]: #0 failed to flush the buffer. retry_times=4 next_retry_time=2024-08-29 09:48:48 +0000 chunk="620cf5c1a09d87697d7c0f92760ef3fb" error_class=TinyTds::Error error="Unable to connect: Adaptive Server is unavailable or does not exist (172......)"
Im quite lost at this point