Wednesday, 28 January 2015

Enabling SSH on AIX 7.1

As part of my current project, I need to validate the process for installing DB2 10.5 and WebSphere MQ 8.0 on an AIX server.

We have an excellent virtual loaner programme within my team, so I was able to quickly borrow an AIX box, located in the US, and get hooked up via VPN.

First thing I had to do was grow the available disk, as I didn't have much free space with which to play: -

df -g

Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on
/dev/hd4           0.25      0.06   78%     9932    42% /
/dev/hd2           2.12      0.24   89%    43368    42% /usr
/dev/hd9var        0.50      0.25   51%     4109     7% /var
/dev/hd3           0.12      0.12    3%       37     1% /tmp
/dev/hd1           0.12      0.12    1%        5     1% /home
/dev/hd11admin      0.12      0.12    1%        5     1% /admin
/proc                 -         -    -         -     -  /proc
/dev/hd10opt       0.38      0.19   51%     7036    14% /opt
/dev/livedump      0.25      0.25    1%        4     1% /var/adm/ras/livedump


My AIX contact in the US confirmed that I had 100 GB available, so I merely needed to "grow" one of my file-systems.

I chose to grow /opt as that's where my software is mainly going to "live" : -

chfs -a size=50G /opt

Next hurdle was to get SSH enabled, as I really don't get along with telnet after all these years.

I chose to use the OpenSSH version of the SSH components, available from IBM below: -

Specifically, I needed to download: -

OpenSSH Version  6.0 
OpenSSL Version  1.0.1.x 

which resulted in: -

-rw-r--r--    1 root     system      6786805 Jan 28 11:46 OpenSSH_6.0.0.6200.tar.Z
-rw-r--r--    1 root     system     20852282 Jan 28 11:55 openssl-1.0.1.513.tar.Z


I'd previously downloaded bash and tar from the AIX Toolbox: -

so I expanded the two .tar.Z files, resulting in: -

drwxrwxr-x    2 435159   781431         4096 Jan 28 11:48 OpenSSH_6.0.0.6200
drwx------    2 435159   781431          256 Jan 28 11:56 openssl-1.0.1.513

which I then installed: -

cd ./openssl-1.0.1.513
installp -ac -Y -d . openssl.base

cd ./OpenSSH_6.0.0.6200
installp -ac -Y -d . openssh.base openssh.license

This did all that I needed, and I merely needed to log out and then connect to the AIX box via ssh which is nice.


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