'OS_CPU_OC_RATIO', 1))) os_ram_overcomit_ratio = config.get( 'OS_RAM_OC_RATIO', float( os.getenv( 'OS_RAM_OC_RATIO', 1))) osclient = OSClient( os_keystone_url, os_password, os_tenant_name, os_username, os_user_domain, os_region, os_timeout, os_retries) oscache = OSCache(os_polling_interval, os_region) collectors.append(oscache) check_os_api = CheckOSApi(oscache, osclient) collectors.append(check_os_api) neutron_agent_stats = NeutronAgentStats(oscache, osclient) collectors.append(neutron_agent_stats) cinder_service_stats = CinderServiceStats(oscache, osclient) collectors.append(cinder_service_stats) nova_service_stats = NovaServiceStats(oscache, osclient) collectors.append(nova_service_stats) hypervisor_stats = HypervisorStats( oscache, osclient, os_cpu_overcomit_ratio, os_ram_overcomit_ratio)