Introduction
I recently came across a requirement from our DBA Team wherein they needed to access a server on Oracle Cloud and all they had was a .ppk file received from the App Team that managed the OCI server. Since the source server from which we had to connect did not have a GUI, we needed to generate a corresponding .pem file to use on the command line.
For this, I installed putty on a lab machine.
yum install putty
I then used the .ppk file to generate a .pem file using the following command:
puttygen oci.ppk -O private-openssh -o oci.pem
This step did prompt me for the passphrase for the .ppk file which I was are of.
To login to the OCI server, I used .pem file by specifying the -i option with the ssh command as follows.
-bash-4.1$ ssh -i oci.pem opc@11.59.17.209
Enter passphrase for key 'oci.pem':
Last login: Thu Aug 13 07:17:30 UTC 2020 from 10.22.88.26 on pts/0
Last login: Thu Aug 13 07:18:17 2020 from 10.22.88.26
The passphrase was the same one I was prompted for while generating the .pem file.
Conclusion
This concludes this post on how to generate a .pem file from a .ppk file. I hope you found the post to be useful.
