I have tried to run syslog-ng in this way:

root@syslog-srv904:/opt/syslog-ng/sbin# ./syslog-ng -f /opt/syslog-ng/etc/syslog-ng.conf

without any option of debug;

on syslog-ng.conf there is:
destination d_mysql {
        sql(type(mysql)
        host("127.0.0.1") username("syslogadmin") password("syslogadmin")
        database("syslog")
        table("logs")
        columns("host", "facility", "priority", "level", "tag", "datetime", "program", "msg")
        values("$HOST", "$FACILITY", "$PRIORITY", "$LEVEL", "$TAG", "$YEAR-$MONTH-$DAY $HOUR:$MIN:$SEC", "$PROGRAM", "$MSG")
        indexes());
};

MySql is configured to accept the configuration from network, so the host("127.0.0.1") username("syslogadmin") password("syslogadmin") is correct;

and the CPU run to 100%

and doesn't write anything to dbase;

but if use this configuration
destination d_mysql {
    program("/usr/bin/mysql -usyslogadmin -psyslogadmin syslog"
    template("INSERT INTO logs (host, facility, priority, level, tag, datetime, program, msg)
    VALUES ( '$HOST', '$FACILITY', '$PRIORITY', '$LEVEL', '$TAG', '$YEAR-$MONTH-$DAY $HOUR:$MIN:$SEC', '$PROGRAM', '$MSG' );\n")
    template-escape(yes));
};

run OK;

it seems that the sql() statement go in loop;

where is the error?

Someone can send a configuration that run OK?

Thank you.

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