hduser@benjamin-VirtualBox:/usr/local/hadoop$ 
hduser@benjamin-VirtualBox:/usr/local/hadoop$ 
hduser@benjamin-VirtualBox:/usr/local/hadoop$ /usr/local/hadoop/sbin/start-all.sh
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
Starting namenodes on [localhost]
localhost: starting namenode, logging to /usr/local/hadoop/logs/hadoop-hduser-namenode-benjamin-VirtualBox.out
localhost: starting datanode, logging to /usr/local/hadoop/logs/hadoop-hduser-datanode-benjamin-VirtualBox.out
Starting secondary namenodes [0.0.0.0]
The authenticity of host '0.0.0.0 (0.0.0.0)' can't be established.
ECDSA key fingerprint is cf:83:88:98:37:bb:c9:ed:2f:fb:87:a0:60:8a:5f:b4.
Are you sure you want to continue connecting (yes/no)? yes
0.0.0.0: Warning: Permanently added '0.0.0.0' (ECDSA) to the list of known hosts.
0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop/logs/hadoop-hduser-secondarynamenode-benjamin-VirtualBox.out
starting yarn daemons
starting resourcemanager, logging to /usr/local/hadoop/logs/yarn-hduser-resourcemanager-benjamin-VirtualBox.out
localhost: starting nodemanager, logging to /usr/local/hadoop/logs/yarn-hduser-nodemanager-benjamin-VirtualBox.out
hduser@benjamin-VirtualBox:/usr/local/hadoop$