Upgrade Upgrade OS to CentOS 7 from CentOS 6

Am trying to figure out the best way to handle an OS upgrade, I want to move to CentOS 7 and there is no easy way that I can find. I do have 2 servers at soyoustart, my main and a small mailserver.

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Do I move all the data to the other server, install CentOS7 on my original and then reinstall centminmod before moving all my data back or is there a different/preferred way of doing things.

I know just enough to be dangerous so please be gentle

Cheers
Bruce

 

Thank you Sir, I have looked at soyoustart and they have an identical server available so will will get that one and start the migration as per the linked guide.

Cheers

 

Been installing evrything on the new server and have begun the keygen stuff but it does not seem to be working, I keep getting this:

Code:

/usr/bin/ssh-copy-id: ERROR: No identities found

and I have no idea why. I looked up ssh-copy-id and both sshd configs contain what they need to however it still fails.

Anyone?

Cheers

 

After setting the parameters as per Upgrade - Nginx - Insight Guide - Centmin Mod Site Data Migration Guide I executed the following:

Code:

cd /root/tools/keygen
./keygen.sh gen rsa $remoteip $port root $comment $remoterootpass

Just ran it again and got the same: (password removed)

Code:

copy /root/.ssh/my1.key.pub to remote: root@158.69.25.2
sshpass -p <password> ssh-copy-id -o StrictHostKeyChecking=no -i /root/.ssh/my1.key.pub root@158.69.25.2 -p 22
/usr/bin/ssh-copy-id: ERROR: No identities found
[22:16][root@es1.ozspeedway.net keygen]#

Checked the destination and there is a file there but it is empty:

Code:

[02:17][root@ns516731 ~]# cd /root/.ssh
[02:17][root@ns516731 .ssh]# ls
authorized_keys2
[02:17][root@ns516731 .ssh]# cat authorized_keys2
[02:17][root@ns516731 .ssh]#

Cheers

 

Does it remove the key after trying? I ask because the key is not in /root/.ssh

Code:

[01:45][root@es1.ozspeedway.net keygen]# ls -al /root/.ssh
total 12
drwxr-xr-x  2 root root 4096 Aug 17 22:25 .
dr-xr-x--- 13 root root 4096 Aug 16 10:02 ..
-rw-r--r--  1 root root  794 Aug 17 01:10 known_hosts

 

Yup, all followed from the linked thread. I can transfer from old to new if I supply the new password while doing so.

 

There must be something in a settings file somewhere as it has always indicated keys2. I will, scour the settings of a few items to find out why

 

Did a search as suggested and came up with this:

Code:

[23:23][root@es1.ozspeedway.net keygen]# grep AuthorizedKeysFile /etc/ssh/sshd_config
AuthorizedKeysFile      .ssh/authorized_keys
[23:23][root@es1.ozspeedway.net keygen]#

Yet in the keygen logs is this:

Code:

[23:12][root@es1.ozspeedway.net keygen]# grep -r "keys2" /etc/
/etc/keygen/logs/keygen-170820-005123.log:-rw-r--r--  1 root root    0 Mar  9  2016 authorized_keys2
/etc/keygen/logs/keygen-170820-010802.log:-rw-r--r--  1 root root    0 Mar  9  2016 authorized_keys2
/etc/keygen/logs/keygen-170820-075535.log:-rw-r--r--  1 root root    0 Mar  9  2016 authorized_keys2

will keep checking