I want to install hadoop 3 on mint but at the end local host::9870 works fine and show nameNode but although in terminal resource manager starts, localhost:8088 does not works!
https://imgur.com/0QCqHkG
With Ubuntu 18.04 and Hadoop 3.1.1 I had the same problem.
I workarounded it by using Java 8 instead of Java 11. I.e. I replaced:
export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
— with:
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
in etc/hadoop/hadoop-env.sh.
Related
I want to installed the hadoop(3.2) in my linux system which has installed the hadoop(2.7).When I execute hadoop , I can only get the information of hadoop 2.7 ,even if I change the environment variable. And the most confused thing is when I run echo $HADOOP_HOME , sometimes I can get the path of hadoop 2.7,sometimes hadoop 3.2. I hope someone can help me.
enter image description here
enter image description here
I am new to Hortonworks Sandbox HDP 2.6.5. I have it successfully installed on a MacOS Catalina, itself running VirtualBox. All is good - I can access the Ambari dashboard and ssh from my Mac to the Hadoop FS.
However, I am confused about what is where and therefore how to access....
I can ssh using this line:
maria_dev#127.0.0.1 -p 2222
.... and I arrive here: maria_dev#sandbox-hdp
This looks a lot like the Hadoop file system.
In Ambari, I use the FileView to navigate in the GUI to user/maria_dev
This looks to me like I am navigating the Linux host.
Assuming this is correct(..is it?) , how to I ssh to here (user/maria_dev) from a terminal on my Mac?
Thanks in advance
Simon
Ambari fileview is HDFS
You don't see HDFS files from an SSH session without using the hdfs fs -ls commands, and this is different from just ls/cd on its own
FWIW, HDP 2.6 has been deprecated for a few years
how do I log into the Linux system that is supporting the Hadoop instance
That is what SSH does
I'm trying to install Hadoop on CentOS7, following steps here - https://www.vultr.com/docs/how-to-install-hadoop-in-stand-alone-mode-on-centos-7 (Only difference Hadoop version is 3.2.1 instead of 2.7.3 in article)
I followed everything precisely until at step 4 when i type in "hadoop" in terminal it gives me an error - ERROR: Invalid HADOOP_YARN_HOME
Is there any setup related to Yarn thats needed? I read the Apache doc and other links on the web but they all mention only JAVA_HOME path is needed which I did set as per above link.
Any help appreciated.
Thanks!
Open ~/.bashrc
add
export HADOOP_HOME=path_to_your_hadoop_package
export HADOOP_YARN_HOME=$HADOOP_HOME
I'm trying run some server script which is using there lines:
#!/bin/bash
# ...
export APACHE_CONFDIR=$SOME_DIR
/usr/sbin/apache2ctl start
But it doesn't works, because I have 'apachectl'. After change it works but not in $SOME_DIR directory.
Because they never had an ambiguity due to installing both Apache 1.3 and Apache 2.x on the same operating system. "apache2" is a debian-ism.
I want to setup a cluster of 3 nodes in my office innovation lab. All the 3 machines are having windows 7 installed. so I thought of creating a cluster using Ubuntu installed on all the 3 machines. so far I have followed below steps.
Installed VM ware on all the 3 machines
Installed Ubuntu on the 3 machines.
installed java 1.8 on all the machines
Please guide me what all steps do I need to follow to setup the cluster?
I have seen few videos where in they have created some local repository and did some setup for httpd also
thank
Brijesh
first you install hadoop version this command
rpm -ivh hadoop
then goes hadoop directory
cd /etc/hadoop
and open here hdfs-site.xml file and core-site.xml and edit property
[1]: http://i.stack.imgur.com/WkTIy.png
[2]: http://i.stack.imgur.com/uf89i.png
that's called is datanode . try if possible so on..