Hi Hortonworks expert. I am new to hortonworks and i am trying to add the Ambari Metrics service. I have downloaded and running the latest HDP 2.6.1 for VmWare. While installing the service i am getting the following output: 2017-10-20 18:08:36,928 - Skipping installation of existing package hdp-select 2017-10-20 18:08:37,323 - Using hadoop conf dir: /usr/hdp/current/hadoop-client/conf 2017-10-20 18:08:37,333 - checked_call['hostid'] {} 2017-10-20 18:08:37,355 - checked_call returned (0, '11ac0200') 2017-10-20 18:08:37,362 - Version 2.6.1.0-129 was provided as effective cluster version. Using package version 2_6_1_0_129 2017-10-20 18:08:37,365 - Package['ambari-metrics-collector'] {'retry_on_repo_unavailability': False, 'retry_count': 5} 2017-10-20 18:08:37,715 - Installing package ambari-metrics-collector ('/usr/bin/yum -d 0 -e 0 -y install ambari-metrics-collector') 2017-10-20 18:09:08,960 - Execution of '/usr/bin/yum -d 0 -e 0 -y install ambari-metrics-collector' returned 1. Error: Cannot retrieve repository metadata (repomd.xml) for repository: sandbox. Please verify its path and try again 2017-10-20 18:09:08,960 - Failed to install package ambari-metrics-collector. Executing '/usr/bin/yum clean metadata' 2017-10-20 18:09:09,287 - Retrying to install package ambari-metrics-collector after 30 seconds Can anyone of you help me to understand what's going on? Thanks a lot in advance for your support. ... View more