In the last blog we installed hadoop in a single node environment. In this blog we will do multi node environment.
All daemons will be spread across different nodes.
Cluster Configuration:
2-10 node (small)
- Name Node, Job tracker and Secondary name node on the same machine
-Data node, task tracker on all other machines
10-40 Node ( medium/Single rack)
- Name Node, Job tracker on the same machine
-Secondary name node on the dedicated Machine
-Data node, task tracker on all other machines
100+ node ( large/multi rack)
- Name Node, Job tracker and Secondary name node on the dedicated machine
-Rack awareness
-Network, HDFS optimization
-Map reduce optimization
lets see the process of bringing up multi node cluster. Once you have a bunch of machines, with OS and hadoop on it, then you need to
-Get ssh key from the name node and distribute to all our slaves/data nodes.
-Then Configure name node. in the name node , we have the masters and the slaves file. in the masters file we configure our secondary name node. in the salve file, we will list all our data nodes.
NOTE: If you have name node and job tracker on different machines, make sure that slave files are synchronized,
-Third step is configure our Data nodes and Task trackers. this is done by editing their site.xml file, specifically core-site file and then map red site file
Once its done then
- start-dfs.sh file
we just need to follow our process and our multi node cluster is set.
The commands are: Hadoop Commands
Please single node cluster installation to help you in installation of multi node cluster.I am not going to reinvent the wheel.
big-data-installing-hadoop-single-node
All daemons will be spread across different nodes.
2-10 node (small)
- Name Node, Job tracker and Secondary name node on the same machine
-Data node, task tracker on all other machines
10-40 Node ( medium/Single rack)
- Name Node, Job tracker on the same machine
-Secondary name node on the dedicated Machine
-Data node, task tracker on all other machines
100+ node ( large/multi rack)
- Name Node, Job tracker and Secondary name node on the dedicated machine
-Rack awareness
-Network, HDFS optimization
-Map reduce optimization
lets see the process of bringing up multi node cluster. Once you have a bunch of machines, with OS and hadoop on it, then you need to
-Get ssh key from the name node and distribute to all our slaves/data nodes.
-Then Configure name node. in the name node , we have the masters and the slaves file. in the masters file we configure our secondary name node. in the salve file, we will list all our data nodes.
NOTE: If you have name node and job tracker on different machines, make sure that slave files are synchronized,
-Third step is configure our Data nodes and Task trackers. this is done by editing their site.xml file, specifically core-site file and then map red site file
Once its done then
- start-dfs.sh file
we just need to follow our process and our multi node cluster is set.
The commands are: Hadoop Commands
Please single node cluster installation to help you in installation of multi node cluster.I am not going to reinvent the wheel.
big-data-installing-hadoop-single-node
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