What about Exhausted available authentication methods when CDH5 reports an error?
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1. Machine environment:
CDH5 throws the error "Exhausted available authentication methods" during installation, where the machine thrown is the new machine made by the mirror of the operation and maintenance environment from the stage machine.
2. What went wrong:
During the installation of CDH5, after entering the hadoop user and password for the next step (cluster installation), the web starts to refresh the data source throwing errors: Exhausted available authentication methods
#Since there was no screenshot at the time, I found a picture on a post afterwards
3. Solution:
a. Check whether the hadoop user configures sudo without password permission successfully.
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[root@alish2-xxx-01 ~]# adduser hadoop
[root@alish2-xxx-01 ~]# passwd hadoop
Changing password for user hadoop.
New password:
BAD PASSWORD: it is too short
BAD PASSWORD: is too simple
Retype new password:
passwd: all authentication tokens updated successfully.
[root@alish2-logshedcldmanager-01 etc]# vi /etc/sudoers
## Allow root to run any commands anywhere
root ALL=(ALL) ALL
hadoop ALL=(root)NOPASSWD:ALL
###Verify sudo permissions
[root@alish2-xxx-01 etc]# sudo su hadoop
[hadoop@alish2-logshedcldmanager-01 ~]$ sudo ls -l /root
total 4
-rw------- 1 root root 8 Apr 2 09:45 dead.letter
b. Check if SSH service is normal???
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[root@alish2-xxx-01 ~]# service sshd restart
Stopping sshd: [ OK ]
Starting sshd: [ OK ]
#Restart the service directly, then click "retry" and it's OK.
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