Inserting a hard-coded UUID via CQLsh (Cassandra)

You shouldn't put the quotes around the UUID to stop it being interpreted as a string i.e.

insert into devices (device_id, geohash,name, external_identifier, measures, tags) 
 values 
(c37d661d-7e61-49ea-96a5-68c34e83db3a,'9q9p3yyrn1', 'Acme1', '936', {'aparPower','actPower','actEnergy'},{'make':'Acme'});