On Sat, Nov 24, 2012 at 10:31 AM, a...@hsk.hk <a...@hsk.hk> wrote: > I am also using Ubuntu 12.04, Zookeeper 3.4.4 HBase 0.94.2 and Hadoop 1.0.4. > (64-bit nodes), I finally managed to have the HBase cluster up and running, > below is the line in my /etc/hosts for your reference: > > #127.0.0.1 localhost > 127.0.0.1 localhost.localdomain localhost > > According to my set up experience, below are my advices: > 1) /etc/hosts: should not comment out 127.0.01 in /etc/hosts > 2) Zookeeper: do not sync its "data" and "datalog" folders to other > Zookeeper servers in your deployment > 3) check your start procedures: > - check your firewall policies, make sure each server can use the > required TCP/IP ports, especially port 2181 in your case > - start Zookeeper first, need to make sure all other servers can > access Zookeeper servers, use "/bin/zkCli.sh -server XXXX" or "echo ruok | nc > XXXX 2181" to test all Zookeepers from each HBASE server. > - start Hadoop, use JPS to make sure Namenode, SecondaryNameNode, > Datanodes up and running, check LOG files of each servers > - start MapReduce if you need it > - start HBase, use JPS to check HBase's HMaster and HRegionServers, > then wait a while use JPS to check HMaster and HRegionServers again, if them > all HBASE servers gone but HADOOP still up and running, most likely it would > be HBASE configure issue in hbase-site.xml related to ZooKeeper settings or > ZooKeeper configure/data issues. > > > Hope these help and good luck. > ac >
Thanks ac for the clean instructions. We have an ubuntu callout here on localhost in /etc/hosts: http://hbase.apache.org/book.html#basic.prerequisites What else would you suggest we add to the reference guide? Thanks, St.Ack P.S. I used to have a friend named AC but in his case it stood for "Anti-Christ".
