[root@cors004 puppet-github]# puppetd --server cors002.ocre.cea.fr --trace
/usr/lib/ruby/site_ruby/1.8/puppet/daemon.rb:47:in `create_pidfile': Could not create PID file: /var/puppet/run/puppetd.pid (RuntimeError)
        from /usr/lib/ruby/1.8/sync.rb:229:in `synchronize'
        from /usr/lib/ruby/site_ruby/1.8/puppet/daemon.rb:45:in `create_pidfile'
        from /usr/lib/ruby/site_ruby/1.8/puppet/daemon.rb:21:in `daemonize'
        from /usr/lib/ruby/site_ruby/1.8/puppet/application/puppetd.rb:237:in `run_setup'
        from /usr/lib/ruby/site_ruby/1.8/puppet/application.rb:216:in `run'
        from /usr/sbin/puppetd:159