I added path to sunspot.yml
development:
solr:
hostname: localhost
port: 8982
log_level: INFO
path: /solr/development
test:
solr:
hostname: localhost
port: 8981
log_level: WARNING
path: /solr/test
Not sure if this good enough though. Seems this is because I am using Solr 4 and configuration is creating solr/environment
type URLs.