[Bugs] [Bug 1206547] New: [Backup]: Glusterfind create session unable to correctly set passwordless ssh to its peer(s)

Fri Mar 27 12:02:07 UTC 2015

https://bugzilla.redhat.com/show_bug.cgi?id=1206547

            Bug ID: 1206547
           Summary: [Backup]: Glusterfind create session unable to
                    correctly set passwordless ssh to its peer(s)
           Product: GlusterFS
           Version: mainline
         Component: unclassified
          Assignee: bugs at gluster.org
          Reporter: sanandpa at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com

Description of problem:

Glusterfind create creates a session, and distributes the public key to all its
peers. That is used in the subsequent 'glusterfind pre' command to find the
modified files at brick level of every node.BUT the 'glusterfind pre' command
prompts the user for the password of peer, which it is otherwise expected to
take care of, internally.

Version-Release number of selected component (if applicable):

3.7 Upstream build glusterfs-server-3.7dev-0.777.git2308c07.el6.x86_64

How reproducible: Always

Steps to Reproduce:

1. Have a 2 node cluster, and a 2*2 volume 'nash' 
2. Execute the glusterfind create command to create a session for the volume
'nash'
3. Execute the glusterfind pre command to start the brick crawl to get the
changed list of files

Actual results: 

Step 3 prompts the user for password of peer. And it does this multiple times,
even after giving the correct password.

Expected results: 

Step 3 should not prompt the user for password. Step 2 should have taken care
of setting up password less ssh from node it is run, to all its peers.

Additional info:

Was not able to reproduce this in my older setup, after doing a ssh-copyid
manually. Created a brand new setup and re did the steps to recreate the issue.
The setup is in the same state if you would want to have a look.
Node1: 10.70.43.48
Node2: 10.70.42.147
Authentication: root/redhat

I do see the public key copied to /root/.ssh/authorised_keys in the peer.
Pasted below are the detailed logs..

[root at dhcp43-48 glusterd]# gluster v i

Volume Name: nash
Type: Distributed-Replicate
Volume ID: cd66179e-6fda-49cf-b40f-be930bc01f6f
Status: Started
Number of Bricks: 2 x 2 = 4
Transport-type: tcp
Bricks:
Brick1: 10.70.43.48:/rhs/brick1/dd
Brick2: 10.70.42.147:/rhs/brick1/dd
Brick3: 10.70.43.48:/rhs/brick2/dd
Brick4: 10.70.42.147:/rhs/brick2/dd
Options Reconfigured:
changelog.changelog: on
storage.build-pgfid: on
[root at dhcp43-48 glusterd]#
[root at dhcp43-48 glusterd]# ls
geo-replication  glusterd.info  glusterfind  glustershd  groups  hooks  nfs 
options  peers  quotad  snaps  vols
[root at dhcp43-48 glusterd]# ls glusterfind/
[root at dhcp43-48 glusterd]# glusterfind create sess nash
[root at dhcp43-48 glusterd]# 
[root at dhcp43-48 glusterd]# ls
geo-replication  glusterfind             glusterfind.secret.pem.pub  groups 
nfs      peers   snaps
glusterd.info    glusterfind.secret.pem  glustershd                  hooks  
options  quotad  vols
[root at dhcp43-48 glusterd]# cat glusterfind.secret.pem.pub
ssh-rsa
AAAAB3NzaC1yc2EAAAABIwAAAQEAvniql8bDymri+Wxr2BI41zqQ1sULDSewGWIR3mNcYEpHTU6eMhgG3csRUZx66LZwjQ/irDHPljltog6CNiPbqoqP0fty23AUBcLUVluinl6q3SCVQvqv1DXZuEG3aNBsJUoRjL9CEGak/aE0G7tvAZBOjOCWLXZIxoYmOsaBszxJdX4ei2COhHlouEch2pQMx3DKLKv5t8gFhmAc4SLI5AytiVsODyCqg9oGinjBEKyPgvDnympmT5lxjpo6P9ww0UqFbECNmYe4a3/XHY5Dp/8wfJH9Vf74wM3pxJ62TUOxqTAkRQmuxNnf3HcZCLaPlKCar8NuW0L0H2AQ+5UR6w==
root at dhcp43-48.lab.eng.blr.redhat.com
[root at dhcp43-48 glusterd]# 
[root at dhcp43-48 glusterd]#
[root at dhcp43-48 glusterd]# glusterfind pre sess nash /root/out.txt
10.70.43.48 - Change detection failed
10.70.43.48 - Change detection failed
The authenticity of host '10.70.42.147 (10.70.42.147)' can't be established.
RSA key fingerprint is 8b:74:e8:f6:9e:55:9b:76:d0:78:28:08:b7:24:97:26.
Are you sure you want to continue connecting (yes/no)? The authenticity of host
'10.70.42.147 (10.70.42.147)' can't be established.
RSA key fingerprint is 8b:74:e8:f6:9e:55:9b:76:d0:78:28:08:b7:24:97:26.
Are you sure you want to continue connecting (yes/no)? yes
Please type 'yes' or 'no': yes
root at 10.70.42.147's password: Please type 'yes' or 'no': 
root at 10.70.42.147's password: 
Please type 'yes' or 'no': 
root at 10.70.42.147's password: 
Please type 'yes' or 'no': 
10.70.42.147 - Change detection failed

10.70.42.147 - Change detection failed
[root at dhcp43-48 glusterd]# cat glusterfind.secret.pem.pub
ssh-rsa
AAAAB3NzaC1yc2EAAAABIwAAAQEAvniql8bDymri+Wxr2BI41zqQ1sULDSewGWIR3mNcYEpHTU6eMhgG3csRUZx66LZwjQ/irDHPljltog6CNiPbqoqP0fty23AUBcLUVluinl6q3SCVQvqv1DXZuEG3aNBsJUoRjL9CEGak/aE0G7tvAZBOjOCWLXZIxoYmOsaBszxJdX4ei2COhHlouEch2pQMx3DKLKv5t8gFhmAc4SLI5AytiVsODyCqg9oGinjBEKyPgvDnympmT5lxjpo6P9ww0UqFbECNmYe4a3/XHY5Dp/8wfJH9Vf74wM3pxJ62TUOxqTAkRQmuxNnf3HcZCLaPlKCar8NuW0L0H2AQ+5UR6w==
root at dhcp43-48.lab.eng.blr.redhat.com
[root at dhcp43-48 glusterd]#
[root at dhcp43-48 glusterd]# glusterfind pre sess nash /root/out.txt
--change-detector=brickfind
root at 10.70.42.147's password: root at 10.70.42.147's password: 
root at 10.70.42.147's password: 
root at 10.70.42.147's password: 

root at 10.70.42.147's password: 
root at 10.70.42.147's password: root at 10.70.42.147's password: 

root at 10.70.42.147's password: 
Generated output file /root/out.txt
[root at dhcp43-48 glusterd]# cat /root/out.txt 
[root at dhcp43-48 glusterd]# ls -l /root/out.txt 
-rw-r--r--. 1 root root 0 Mar 27 22:48 /root/out.txt
[root at dhcp43-48 glusterd]# 
[root at dhcp43-48 glusterd]# 
[root at dhcp43-48 glusterd]# ssh 10.70.42.147
root at 10.70.42.147's password: 

[root at dhcp43-48 glusterd]#

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