Unable to start daemons using start-dfs.sh

Question

We are using cdh4-0.0 distribution from cloudera. We are unable to start the daemons using the below command.

>start-dfs.sh
Starting namenodes on [localho         


        

Answer 1

Looks like you're using tarballs?

Try to set an override the default HADOOP_LOG_DIR location in your etc/hadoop/hadoop-env.sh config file like so:

export HADOOP_LOG_DIR=/path/to/hadoop/extract/logs/

And then retry sbin/start-dfs.sh, and it should work.

In packaged environments, the start-stop scripts are tuned to provide a unique location for each type of service, via the same HADOOP_LOG_DIR env-var, so they do not have the same issue you're seeing.

If you are using packages instead, don't use these scripts and instead just do:

service hadoop-hdfs-namenode start
service hadoop-hdfs-datanode start
service hadoop-hdfs-secondarynamenode start