@Michael Bronson I don't see the hostname entries of master1-->Master3 in the below format in your host file? IP:FQDN:ALIAS Did you intentionally remove them? Can you validate your DNS is functioning Find out the IP address of Domain $ nsloookup FQDN Find out Reverse Domain Lookup $ nslookup IP ... View more

@Michael Bronson Can you share the hosts' entries on the 3 Zk nodes ? ... View more

@Weiss Ruth It seems you duplicated your thread this doesn't help, firstly we lose track of the previous history and start diagnostics from scratch which is a waste of time. Having said that using the windows cmd line sshlogin.png won't work because the 127.0.0.1 maps to the local hosts the host via the loopback network interface on your windows machine and NOT the Sandbox running in Oracle Virtualbox. Download the putty and use port tunneling to map the port 2222 ! HTH ... View more

@Michael Bronson So if you use the IP does it work if so please check the DNS resolution for this particular host. ... View more

@Michael Bronson Isn't this a duplicate thread for the same problem https://community.hortonworks.com/questions/232197/too-many-connections-on-zookeper-server.html?childToView=232209#comment-232209 As the problem is only on Master1 can you check that your /etc/hosts entries are correct? and FW is not active on the master1. your zoo.cfg looks correct. Last resort would be to delete and install the zookeeper service. ... View more

@Weiss Ruth Are you using the shell client? HTH ... View more

@Michael Bronson Replace the x.x.x.x with your zookeeper IP netstat -nape | awk '{if($5 =="x.x.x.x:2181")print $4, $9;}' Please let me know HTH ... View more

@Michael Bronson The maxClientCnxns property in zoo.cfg is used by the ZooKeeper server to limit incoming connections to the ZooKeeper from a single host. By default, this limit is 60. When this limit is reached, new connections to the ZooKeeper server from the given host will be immediately dropped. This rate-limiting can be observed in the ZooKeeper log and offending applications can be identified by using network tools like netstat. Changes to maxClientCnxns must be accompanied with a restart of the ZooKeeper server. Too many connections from /23.1.35.185 - max is 602018-12-26 02:50:46,429 [myid:1] Too many connections from /23.1.35.197 - max is 602018-12-26 02:50:46,849 [myid:1] Too many connections from /23.1.35.187 - max is 602018-12-26 02:50:47,645 [myid:1] Possible solutions What application is running at that particular time? This can be caused by a bug in user code check the offending application with nestat Ensure that the configuration setting for the maximum number of client connections is sufficient enough to avoid the loss of connections. update the value of the maxClientCnxns configuration parameter in the ZooKeeper-installation-directory/conf/zoo.cfg file on the zookeeper ensemble. Ensure that you have no system issues with CPU services, memory, disk input/output, or other system resources. Zookeeper is sensitive to NTPD functionality make sure the clock is synchronized in the ensemble. Restart ZooKeepers through Ambari HTH ... View more

@Lindsay Gaff Ranger usually does that for you once you have configured the LDAP authentication 🙂 by running periodically user sync process manual maintenance is just not workable. Ranger LDAP integration HTP ... View more

@Vinay Can you install hive,spark clients on the hive/Spark nodes? ... View more