solr_cap.md

这是从其他地方 fork 过来的部署脚本(deploy.rb 部分代码)

namespace :deploy do
  task :setup_solr_data_dir do
    run "mkdir -p #{shared_path}/solr/data"
  end
end

namespace :solr do
  desc "start solr"
  task :start, :roles => :app, :except => { :no_release => true } do 
    run "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec sunspot-solr start --port=8983 --data-directory=#{shared_path}/solr/data --pid-dir=#{shared_path}/pids"
  end
  desc "stop solr"
  task :stop, :roles => :app, :except => { :no_release => true } do 
    run "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec sunspot-solr stop --port=8983 --data-directory=#{shared_path}/solr/data --pid-dir=#{shared_path}/pids"
  end
  desc "reindex the whole database"
  task :reindex, :roles => :app do
    stop
    run "rm -rf #{shared_path}/solr/data"
    start
    run "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec rake sunspot:solr:reindex"
  end
end

after 'deploy:setup', 'deploy:setup_solr_data_dir'

现在，我是这么做的（可能由于 capistrno 版本不同，对于 shared_path 有不同写法）

# config/deploy.rb (部分)

# 设置共享的文件夹
set :shared_children, %w(solr/data solr/pids log tmp/pids tmp/sockets public/uploads)

namespace :solr do
  desc "start solr"
  task :start, roles: :app, except: { no_release: true } do
    run "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec rake sunspot:solr:start"
  end

  task :stop, roles: :app, except: { no_release: true } do
    run "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec rake sunspot:solr:stop"
  end

  task :reindex, roles: :app do
    stop
    run "rm -rf #{shared_path}/solr/data"
    start
    run "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec rake sunspot:solr:reindex"
  end
end

注意

只要你的 solr 配置不变，每次部署就不需要重启 solr 服务。

所以 solr 服务应该设置成手动重启，或是你写个逻辑，每次部署前判断配置文件有没有变化，如果有，则重启 solr 服务。