About mike_bronson7

jsensharma · ‎12-06-2018

@Michael Bronson Following API call will tell us how many DataNodes are live. # curl -H "X-Requested-By: ambari" -u admin:admin -X GET http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/services/HDFS/components/DATANODE?fields=ServiceComponentInfo/started_count,ServiceComponentInfo/total_count "started_count": Shows the live (running) DataNodes. "total_count" : Shows how many DataNodes are there in the cluster. In order to find out the Individual DataNode Status you will need to supply the hostnames where the DataNodes are installed in the following API call. # curl -H "X-Requested-By: ambari" -u admin:admin -X GET http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/hosts/newhwx4.example.com/host_components/DATANODE?fields=HostRoles/host_name,HostRoles/state (OR other host) # curl -H "X-Requested-By: ambari" -u admin:admin -X GET http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/hosts/newhwx1.example.com/host_components/DATANODE?fields=HostRoles/host_name,HostRoles/state

jagadeesan · ‎12-04-2018

I can suggest, for 20 kafka machines you can go with 3 zookeeper servers

Carolyn · ‎12-04-2018

@Michael Bronson The page Designing a ZooKeeper explains that a 3 node cluster an survive 1 node failure. A 5 node cluster can survive 2 node failures.

mike_bronson7 · ‎12-04-2018

hdp-select status | grep -i hdfs hadoop-hdfs-client - 2.6.4.0-91 hadoop-hdfs-datanode - 2.6.4.0-91

mike_bronson7 · ‎11-18-2018

@Jay chould you please help me with the follwing thred - https://community.hortonworks.com/questions/226622/rest-api-how-to-verify-the-max-value-for-each-para.html

jsensharma · ‎11-19-2018

UI uses Java Script to parse and process the bar values. I am afraid that using API call we can not get those values calculations. Mostly the recommendations comes from the "stack_advisor.py" script as following: https://github.com/apache/ambari/blob/release-2.6.2/ambari-server/src/main/resources/stacks/stack_advisor.py#L611-L613 .

mike_bronson7 · ‎11-05-2018

@Jay thank you I will check this API on my cluster , meenhile can you please advice about my thred - https://community.hortonworks.com/questions/227204/avoid-kafka-disk-to-became-100-by-cron-job.html

mike_bronson7 · ‎10-23-2018

[zk: localhost:2181(CONNECTING) 0] ls / Exception in thread "main" org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for / at org.apache.zookeeper.KeeperException.create(KeeperException.java:99) at org.apache.zookeeper.KeeperException.create(KeeperException.java:51) at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472) at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1500) at org.apache.zookeeper.ZooKeeperMain.processZKCmd(ZooKeeperMain.java:723) at org.apache.zookeeper.ZooKeeperMain.processCmd(ZooKeeperMain.java:591) at org.apache.zookeeper.ZooKeeperMain.executeLine(ZooKeeperMain.java:363) at org.apache.zookeeper.ZooKeeperMain.run(ZooKeeperMain.java:323) at org.apache.zookeeper.ZooKeeperMain.main(ZooKeeperMain.java:282) You have mail in /var/spool/mail/root [root@master01 ~]#

mike_bronson7 · ‎10-16-2018

yes we run from the same node

JonathanSneep · ‎10-08-2018

@Michael Bronson Did it work OK without the underscore? I'm curious and hope I didn't make you go through making a new lab for nothing 🙂 let me know if you still have any errors.

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