Vertica backup failure

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Article ID: 36181

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Updated On:

Products

CA Infrastructure Management CA Infrastructure Management CA Performance Management - Usage and Administration CA Performance Management - Data Polling

Issue/Introduction

Issue:

Vertica backup fails when backing up a three node cluster.  The error seen is :

 

Host key verification failed. 

Traceback (most recent call last): 

File "/tmp/vbr/vbr.py", line 2740, in work 

remoteClient(args[0], args[1], args[2], args[3], args[4], args[5], args[6] == 'True') 

File "/tmp/vbr/vbr.py", line 920, in remoteClient 

ssList = subprocess.check_output(g["sshBackup"] + [sHost, cmd]) 

File "/opt/vertica/oss/python/lib/python2.7/subprocess.py", line 537, in check_output 

raise CalledProcessError(retcode, cmd, output=output) 

CalledProcessError: Command '['ssh', '-x', 'xxx.xxx.xxx.xxx', 'ls -1 /opt/CA/backup/v_capm_node0003']' returned non-zero exit status 255 

Child processes terminated abnormally. 

backup failed! 

cleaning up...

 

Environment:  

Performance Management 2.5 and 2.6

 

Cause:

passwordless ssh is misconfigured

 

Resolution:

On each node run the following command: cat ~/.ssh/known_hosts 

What should be seen is the IP of the node in question along with IP's of other nodes in the cluster and their passwordless ssh key information.  In the event that any IP and key information is missing from a known_hosts file on one of the nodes, you can copy it from the known_hosts file on another node.  After doing this the backup should run successfully

Environment

Release: IMDAGG99000-2.5-Infrastructure Management-Data Aggregator
Component: