question Re: Configure NameNode HA Cluster - How to generate SSH private key in Archives of Support Questions (Read Only)

Configure NameNode HA Cluster - How to generate SSH private key

csguna — Fri, 16 Sep 2022 10:57:08 GMT

Hi Can you anyone help me out with below configuration file and please let me know how to generate the SSH private key file - We configuring HA namenode cluster for testing purpose.

<property>
 <name>dfs.ha.fencing.ssh.private-key-files</name>
 <value>/home/exampleuser/.ssh/id_rsa</value>
</property>

Not my area - I have no idea as to how to generate this file

/home/exampleuser/.ssh/id_rsa

Thanks

Re: Configure NameNode HA Cluster - How to generate SSH private key

saranvisa — Fri, 27 Jan 2017 21:25:01 GMT

@csguna

Run the command "ssh-keygen" in the master node, it will generate two files, in which move "id_rsa.pub" to child node and rename it as authorizedkey and change the permission to 600.

This is required for keyless entry

You can refer this link with above understanding

https://www.digitalocean.com/community/tutorials/how-to-set-up-ssh-keys--2

Re: Configure NameNode HA Cluster - How to generate SSH private key

csguna — Sat, 28 Jan 2017 04:32:58 GMT

Re: Configure NameNode HA Cluster - How to generate SSH private key

csguna — Sat, 28 Jan 2017 08:43:10 GMT

is it authorizedkey or authorized_key
should file be in user:hdfs group ?
could you please clarify

Re: Configure NameNode HA Cluster - How to generate SSH private key

saranvisa — Mon, 30 Jan 2017 20:12:04 GMT

@csguna

It is authorized_key

nothing to do with hdfs here. so it is user:linux group (instead of hdfs group)