Hi Behroz, *4- Monitoring* Hama provides a Web GUI to check the basic information about the job. But a few things seem to be missing like bandwidth, cpu and memory usage on cluster and individual machine level. Are there any third party tools that can be integrated in cluster to monitor Hama ? (AMBARI maybe ?)
I contribute to the Jumbune community (http://jumbune.org), It provides cluster profiling & monitoring, you can give a try on your cluster. If required to do some specific/custom integration with Hama, we will be happy to collaborate with Hama team on that. With regards, Mayank On Friday 28 August 2015 10:18 AM, Minho Kim wrote: > Hi Behroz, > > I would response to your questions. > > *1- Password-Less SSH between machines of cluster* >>> Scripts such as Bash, Python, and so on, would be useful for managing many >>> servers. > So I recommend using script files to manage cluster like installing hama and > modifying configuration. > This script help you make script file for managing it. Please refer to > following link. > > https://github.com/awslabs/emr-bootstrap-actions/tree/master/hama > > *2- Dynamic IPs* > *3- HDFS data* >>> In fact, I have never used clusters allocated dynamic IP. But the answer to >>> both questions is using a DNS server. If you use DNS server, you can set >>> configuration using the host name which is an alias assigned to an IP. > > Best Regards, > Minho Kim > > -----Original Message----- > From: Behroz Sikander [mailto:[email protected]] > Sent: Friday, August 28, 2015 11:43 AM > To: [email protected] > Subject: General questions > > Hi, > Since, I am pretty new to cluster configurations, I need some suggestions on > how to solve below mentioned problems efficiently. > > *1- Password-Less SSH between machines of cluster* To have a working cluster, > we need password-less SSH access between all the machines in cluster. Till > now, I was manually doing them because I had only > 3 machines. I am moving to 20 machines now. So, it is a lot of work. How > teams who manage 100s of servers solve this problem ? Bash scripts ? > > *2- Dynamic IPs* > This is the biggest problem. Every time I restart my cluster, all the > machines get new IPs. It means that I need to modify my /etc/hosts files on > all machines. Also I need to verify my password-less SSH logins. Getting a > static IP is difficult in my current setup. So, how people solve this problem > ? > > *3- HDFS data* > As per my current understanding, HDFS has namenodes and datanodes. > Namenodes contain the all the information about chunks and where they are > placed. Now, lets assume I restarted my cluster and got new IPs. My whole > HDFS data will be messed up. Again how to solve this problem ? > > *4- Monitoring* > Hama provides a Web GUI to check the basic information about the job. But a > few things seem to be missing like bandwidth, cpu and memory usage on cluster > and individual machine level. Are there any third party tools that can be > integrated in cluster to monitor Hama ? (AMBARI maybe ?) > > Regards, > Behroz > > ________________________________ NOTE: This message may contain information that is confidential, proprietary, privileged or otherwise protected by law. The message is intended solely for the named addressee. If received in error, please destroy and notify the sender. Any use of this email is prohibited when received in error. Impetus does not represent, warrant and/or guarantee, that the integrity of this communication has been maintained nor that the communication is free of errors, virus, interception or interference.
