[Network Administration] : Ubuntu and encrypted swap space

Installing Ubuntu 14.04LTS, I’ve gotten the following error:
the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present
The message is annoying, but worse, the swap partition is not encrypted.
I was able to get around this by editing the /dev/crypttab to list the /dev/ path to the drive instead of the UUID in the cryptswap1 entry:

cryptswap1 UUID=2f36a43f-0d3e-4c2e-92ad-ac12603c1ff0 /dev/urandom swap,cipher=aes-cbc-essiv:sha256

was changed to:

cryptswap1 /dev/mapper/cerf--vg-swap_1 /dev/urandom swap,cipher=aes-cbc-essiv:sha256

I still get the message, but the swap space is encrypted now.

cerf:~> sudo swapon --summary
Filename				Type		Size	Used	Priority
/dev/mapper/cryptswap1                  partition	8314876	0	-1

[Network Administration]: OS X and Mobile Accounts

I have both Ubuntu and Linux machines. One of the goals is to have access to all of the same information regardless of where I log in, and to have it transparent to the machine that I’m actually using. Continue reading “[Network Administration]: OS X and Mobile Accounts”

[Network Administration]: Kerberized SSH

At this point, most of the infrastructure is in place. Now I could tie some other services together with this infrastructure. For my servers (not the kerberos KDC and LDAP directory), I’ve configured kerberized SSH. It’s a good starting point to see the benefits of single sign-on. Continue reading “[Network Administration]: Kerberized SSH”

[Network Administration]: Automounter over LDAP

This is basically an update to the autofs and automounter page that was published earlier to reflect some changes to how things are set up now. I still have my automount maps in the LDAP directory, but the DN for the maps is updated to the currently provided autofs schema that comes with the Ubuntu package instead of the rfc2307bis schema which seems to have languished in draft form. I’ve also unified some of the files across both Linux machines and OS X. Continue reading “[Network Administration]: Automounter over LDAP”