Hi Team, getting following error while trying to do cleanup on master & worker nodes.   yum -y remove ruby-devel libganglia libconfuse hdp_mon_ganglia_addons postgresql -server yum -y remove postgresql postgresql-libs ganglia-gmond-python ganglia ganglia-gm etad ganglia-web yum -y remove ganglia-devel httpd mysql mysql-server mysqld puppet Loaded plugins: fastestmirror, langpacks, priorities Resolving Dependencies --> Running transaction check ---> Package ambari-agent.x86_64 0:2.7.1.0-169 will be erased ---> Package ambari-metrics-hadoop-sink.x86_64 0:2.7.1.0-169 will be erased ---> Package ambari-metrics-monitor.x86_64 0:2.7.1.0-169 will be erased ---> Package ambari-server.x86_64 0:2.7.1.0-169 will be erased --> Finished Dependency Resolution http://public-repo-1.hortonworks.com/HDP-GPL/centos7/3.x/updates/3.0.1.0/repodat a/repomd.xml: [Errno 12] Timeout on http://public-repo-1.hortonworks.com/HDP-GPL /centos7/3.x/updates/3.0.1.0/repodata/repomd.xml: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds') Trying other mirror. http://public-repo-1.hortonworks.com/HDP-GPL/centos7/3.x/updates/3.0.1.0/repodat a/repomd.xml: [Errno 12] Timeout on http://public-repo-1.hortonworks.com/HDP-GPL /centos7/3.x/updates/3.0.1.0/repodata/repomd.xml: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds') Trying other mirror. http://public-repo-1.hortonworks.com/HDP-GPL/centos7/3.x/updates/3.0.1.0/repodat a/repomd.xml: [Errno 12] Timeout on http://public-repo-1.hortonworks.com/HDP-GPL /centos7/3.x/updates/3.0.1.0/repodata/repomd.xml: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds') Trying other mirror.   ... View more

Hi Team,   We have a 2 node cluster setup of a Namenode and a Datanode.   The name node is refusing to start and is failing because of following error.   Retrying after 10 seconds. Reason: Execution of '/usr/hdp/current/hadoop-hdfs-namenode/bin/hdfs dfsadmin -fs hdfs://inqchdpmn1.XXX.com:8020 -safemode get | grep 'Safe mode is OFF'' returned 1. safemode: Call From inqchdpmn1.XXX.com/10.10.31.71 to inqchdpmn1.XXX.com:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused safemode: Call From inqchdpmn1.XXX.com/10.10.31.71 to inqchdpmn1.XXX.com:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused 2020-07-10 11:08:55,721 -   bash-4.2$ sudo netstat -anp | grep 8020 doesn't give any o/p.   We are stuck for a while now, please help. TIA. ... View more