I can navigate from node to node with an ssh connection without any problems, for example from parasilo-1 to parasilo-10.
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys doesn't change anything unfortunately.
I am connected in SSH to my master node (parasilo-1) on Grid5000 to run a hdfs command:
user#parasilo-1:~$ ./hadoop/hadoop-3.3.4/sbin/start-dfs.sh
Starting namenodes on [parasilo-1.rennes.grid5000.fr]
parasilo-1.rennes.grid5000.fr: user#parasilo-1.rennes.grid5000.fr: Permission denied (publickey,password).
Starting datanodes
parasilo-1.rennes.grid5000.fr: user#parasilo-1.rennes.grid5000.fr: Permission denied (publickey,password).
parasilo-10.rennes.grid5000.fr: user#parasilo-10.rennes.grid5000.fr: Permission denied (publickey,password).
Starting secondary namenodes [parasilo-1.rennes.grid5000.fr]
parasilo-1.rennes.grid5000.fr: user#parasilo-1.rennes.grid5000.fr: Permission denied (publickey,password).
2023-01-12 15:54:57,462 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Does anyone have an idea how to make this command run correctly?
You need to ssh-copy-id to all datanodes, not only edit localhost authorized keys. And there should be no password prompt.
If it's not working, there's no harm in generating a new key and trying again.
Related
Ubuntu 16.04.1 LTS
Hadoop 3.3.1
when I run start-dfs.sh,
hadoop#ubuntu:~/hadoop/sbin$ start-dfs.sh
Starting namenodes on [ubuntu]
ubuntu: Warning: Permanently added 'ubuntu' (ECDSA) to the list of known hosts.
ubuntu: Permission denied (publickey,password).
Starting datanodes
localhost: Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
localhost: Permission denied (publickey,password).
Starting secondary namenodes [ubuntu]
ubuntu: Permission denied (publickey,password).
2021-06-25 18:05:42,961 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... >using builtin-java classes where applicable
I also encountered this problem.
I resolved using the following shell commands.
ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
chmod 0600 ~/.ssh/authorized_keys
I am new in learning Hadoop. And I meet some problems in its configuration. Before it, I finished the configuration of JAVA, SSH, core-site.xml, hdfs-site.xml and hadoop-env.sh. Please tell me how can I solve it. Thank you very much.
root#host1-virtual-machine:/home/host1/usr/hadoop-3.2.1# sbin/start-all.sh
Starting namenodes on [localhost]
ERROR: Attempting to operate on hdfs namenode as root
ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.
Starting datanodes
ERROR: Attempting to operate on hdfs datanode as root
ERROR: but there is no HDFS_DATANODE_USER defined. Aborting operation.
Starting secondary namenodes [host1-virtual-machine]
ERROR: Attempting to operate on hdfs secondarynamenode as root
ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation.
2020-02-12 13:19:37,322 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting resourcemanager
ERROR: Attempting to operate on yarn resourcemanager as root
ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation.
Starting nodemanagers
ERROR: Attempting to operate on yarn nodemanager as root
ERROR: but there is no YARN_NODEMANAGER_USER defined. Aborting operation.
After I add 5 lines into hadoop-env.sh, it warns the following:
Starting namenodes on [localhost]
localhost: root#localhost: Permission denied (publickey,password).
Starting datanodes
localhost: root#localhost: Permission denied (publickey,password).
Starting secondary namenodes [host1-virtual-machine]
host1-virtual-machine: root#host1-virtual-machine: Permission denied (publickey,password).
2020-02-12 20:26:27,702 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting resourcemanager
Starting nodemanagers
localhost: root#localhost: Permission denied (publickey,password).
The reason for this issue is use of different user in installation and for starting the service.
You can define the users as root in hadoop-env.sh as below:
export HDFS_NAMENODE_USER=root
export HDFS_DATANODE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
export YARN_RESOURCEMANAGER_USER=root
export YARN_NODEMANAGER_USER=root
Hope this helps
I meet some problems in the configuration of Hadoop3.2.1 for YARN learning. And I found that there are two different conditions in user root and user host1 when I run the sbin/start-all.sh. Can you tell me how to solve it and whether it has connection with the SSH? Thank you very much.
In Root:
root#host1-virtual-machine:/home/host1/usr/hadoop-3.2.1# sbin/start-all.sh
Starting namenodes on [localhost]
ERROR: Attempting to operate on hdfs namenode as root
ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.
Starting datanodes
ERROR: Attempting to operate on hdfs datanode as root
ERROR: but there is no HDFS_DATANODE_USER defined. Aborting operation.
Starting secondary namenodes [host1-virtual-machine]
ERROR: Attempting to operate on hdfs secondarynamenode as root
ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation.
2020-02-12 14:40:27,093 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting resourcemanager
ERROR: Attempting to operate on yarn resourcemanager as root
ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation.
Starting nodemanagers
ERROR: Attempting to operate on yarn nodemanager as root
ERROR: but there is no YARN_NODEMANAGER_USER defined. Aborting operation.
In host1 user:
host1#host1-virtual-machine:~/usr/hadoop-3.2.1$ sbin/start-all.sh
WARNING: Attempting to start all Apache Hadoop daemons as host1 in 10 seconds.
WARNING: This is not a recommended production deployment configuration.
WARNING: Use CTRL-C to abort.
Starting namenodes on [localhost]
localhost: host1#localhost: Permission denied (publickey,password).
Starting datanodes
localhost: host1#localhost: Permission denied (publickey,password).
Starting secondary namenodes [host1-virtual-machine]
host1-virtual-machine: host1#host1-virtual-machine: Permission denied (publickey,password).
Starting resourcemanager
Starting nodemanagers
localhost: host1#localhost: Permission denied (publickey,password).
You need to set up passwordless connection between nodes. This link might help
http://mynotesonhadoop.blogspot.com/2017/07/configuring-passwordless-ssh-from.html?m=1
when i start hadoop daemon i got following error
[hdp#localhost ~]$ start-all.sh
WARNING: Attempting to start all Apache Hadoop daemons as hdp in 10 seconds.
WARNING: This is not a recommended production deployment configuration.
WARNING: Use CTRL-C to abort.
Starting namenodes on [localhost]
localhost: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Starting datanodes
localhost: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Starting secondary namenodes [localhost.localdomain]
localhost.localdomain: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Starting resourcemanager
Starting nodemanagers
localhost: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
I have setup hadoop on mac local mac. When i start-dfs using the start-dfs.sh command using a separate hadoop user i get the following error in the terminal.
0.0.0.0: mkdir: /usr/local/Cellar/hadoop/2.3.0/libexec/logs: Permission denied
Does anyone know how i can change the log directory for hadoop? I installed hadoop using homebrew.
bash-3.2$ start-dfs.sh
14/03/31 09:04:20 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: mkdir: /usr/local/Cellar/hadoop/2.3.0/libexec/logs: Permission denied
localhost: chown: /usr/local/Cellar/hadoop/2.3.0/libexec/logs: No such file or directory
localhost: starting namenode, logging to /usr/local/Cellar/hadoop/2.3.0/libexec/logs/hadoop-hadoop-namenode-mymac.local.out
localhost: /usr/local/Cellar/hadoop/2.3.0/libexec/sbin/hadoop-daemon.sh: line 151: /usr/local/Cellar/hadoop/2.3.0/libexec/logs/hadoop-hadoop-namenode-mymac.local.out: No such file or directory
localhost: head: /usr/local/Cellar/hadoop/2.3.0/libexec/logs/hadoop-hadoop-namenode-mymac.local.out: No such file or directory
localhost: /usr/local/Cellar/hadoop/2.3.0/libexec/sbin/hadoop-daemon.sh: line 166: /usr/local/Cellar/hadoop/2.3.0/libexec/logs/hadoop-hadoop-namenode-mymac.local.out: No such file or directory
localhost: /usr/local/Cellar/hadoop/2.3.0/libexec/sbin/hadoop-daemon.sh: line 167: /usr/local/Cellar/hadoop/2.3.0/libexec/logs/hadoop-hadoop-namenode-mymac.local.out: No such file or directory
localhost: mkdir: /usr/local/Cellar/hadoop/2.3.0/libexec/logs: Permission denied
localhost: chown: /usr/local/Cellar/hadoop/2.3.0/libexec/logs: No such file or directory
The error indicates a permissions problem. The hadoop user needs the proper privileges to the hadoop folder. Try running the following in Terminal:
sudo chown -R hadoop /usr/local/Cellar/hadoop/2.3.0/