Install new Solr Server (for Sunspot) on CentOS

install.bash

#Install wget
yum install wget
#Find the version that you need on lucene site and get it
wget http://ftp.unicamp.br/pub/apache/lucene/solr/6.2.0/solr-6.2.0.tgz 
#Untar
tar xzf solr-6.2.0.tgz solr-6.2.0/bin/install_solr_service.sh --strip-components=2
#execute the install (can be used for updates as well)
chmod +x install_solr_service.sh
./install_solr_service.sh solr-6.2.0.tgz -f

#Create solr user, add it to whell group (CentOS sudoers) and change the ownership of /opt/solr
bin/solr create -c <name>

#if you need to delete
bin/solr delete -c collection_name

For Solr > 4.7, copy schema.xml and solrconfig.xml from your_app/solr/conf to /opt/solr/solr/collection1 (or whatever your solr path is)

sunspot.yml

production:
  solr:
    hostname: any-host-you-want
    port: 8983
    log_level: WARNING
    path: /solr/core-name
    user: XX
    password: XX
    # read_timeout: 2
    # open_timeout: 0.5