Mapping Index Elasticsearch

Hi, I need to create a mapping of a specific pattern on my index, i store http logs on elasticsearch and i must specify what field are ip, date, float, text or integer. On field IP i want to add geoip plugin and on field agent, the user-agent plugin. The stream come from FluentD and on my index i have all field, but the type is all set to text and i'm unable to run some operations on kibana. Please, do not try to do this if you never worked with elasticsearch. I created the template but when i put to my _template, it don't show the mapping{} fields..