Quick Tips for HDP 2.4+ Installation on RHEL 7.2
Hadoop Installation on RHEL 7.2 Tips
- Custom Install Tips: Read this article and have it available.
- Make sure you know your Hadoop Mount Points
- Follow the networking Best Practices
- Make sure you follow the Hortonworks HDP minimum requirements.
- Make sure you have root access and make sure you have yum, rpm, scp, curl, wget, unzip, tar, yum-utils, createrepo, reposync installed, working and in your path.
- Make sure networking, iptables, proxies and firewalls are all open enough for you to access the Hortonworks repos and the bandwidth is decent.
- Download the OpenJDK 1.8 64-bit update 51 or higher
- Make sure you setup passwordless SSH to all machines, including the current machine you are starting from which is the Ambari Server. You may need to SSH to yourself.
- Make sure you have 20G+ of /var space, 20G+ /usr space and plenty of /tmp space. Many things will go here: /usr/hdp
- One time I needed to manually install MySQL via sudo yum -y install mysql
- Any space where you will install your data nodes will need to be owned by hdfs:hadoop and have 755 access.
- Keep community.hortonworks.com in a browser, you can quickly search and find more answers.
