HDP on Linux – Installation Forum

Cannot start NameNode with hdfs user

  • #44116


    Im trying to install Hadoop following the “Installing HDP Manually” manual (dated Oct 22, 2013). Installation goes fine but in step #4 “Validation the Core Hadoop Installation” I get an error if I want to format or start NameNode.

    It seems like permission problems because for example when I try to start NameNode I get the error “/var/run/hadoop/hdfs/hadoop-hdfs-namenode.pid: Permission denied”

    If I run the command with root everything works.

    Any idea what I messed up during installation? Im pretty sure I missed a step relating Hadoop users permissions.

    Any help would be highly appreciated.


to create new topics or reply. | New User Registration

  • Author
  • #44474

    Can you see the permission set for the folder /var/run/hadoop/hdfs? Ideally if the user is hdfs and the group is hadoop is should read as

    drwxr-xr-x 2 hdfs hadoop 4096 Nov 26 11:12 hdfs

    Please check to see if you have followed the below:

    mkdir -p $HDFS_PID_DIR
    chmod -R 755 $HDFS_PID_DIR


    In the end I changed to installing using Ambari server. I made it almost to the end and I got some errors, but I’ll start another thread.

    Thanks anyway, Mahesh

You must be to reply to this topic. | Create Account

Support from the Experts

A HDP Support Subscription connects you experts with deep experience running Apache Hadoop in production, at-scale on the most demanding workloads.

Enterprise Support »

Become HDP Certified

Real world training designed by the core architects of Hadoop. Scenario-based training courses are available in-classroom or online from anywhere in the world

Training »

Hortonworks Data Platform
The Hortonworks Data Platform is a 100% open source distribution of Apache Hadoop that is truly enterprise grade having been built, tested and hardened with enterprise rigor.
Get started with Sandbox
Hortonworks Sandbox is a self-contained virtual machine with Apache Hadoop pre-configured alongside a set of hands-on, step-by-step Hadoop tutorials.
Modern Data Architecture
Tackle the challenges of big data. Hadoop integrates with existing EDW, RDBMS and MPP systems to deliver lower cost, higher capacity infrastructure.